VAPORMIST
®
Electric-to-Steam Humidifier
Installation, Operation,
and Maintenance Manual
READ AND SAVE THESE INSTRUCTIONS
ii
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
WARNING
CAUTION
Indicates a hazardous situation that could result in death or
serious injury if instructions are not followed.
Indicates a hazardous situation that could result in damage to or
destruction of property if instructions are not followed.
mc_051508_1145
WARNING
Attention installer
Read this manual before installing, and leave this manual with product owner. This product must be installed by qualified
HVAC and electrical contractors and in compliance with local, state, federal, and governing codes. Improper installation
can cause property damage, severe personal injury, or death as a result of electric shock, burns, or fire.
DriSteem Technical Support: 800-328-4447
Read all warnings and instructions
Read this manual before performing service or maintenance procedures on any part of the system. Failure to follow all
warnings and instructions could produce the hazardous situations described, resulting in property damage, personal injury,
or death.
Failure to follow the instructions in this manual can cause moisture to accumulate, which can cause bacteria and mold
growth or dripping water into building spaces. Dripping water can cause property damage; bacteria and mold growth can
cause illness.
mc_011909_1215
Hot surfaces and hot water
This steam humidification system has extremely hot surfaces. Water in tanks, steam pipes, and dispersion assemblies can
be as hot as 212 °F (100 °C). Discharged steam is not visible. Contact with hot surfaces, discharged hot water, or air
into which steam has been discharged can cause severe personal injury. To avoid severe burns, follow the cool-down
procedure in this manual before performing service or maintenance procedures on any part of the system.
mc_011909_1130
Warnings and cautions
WARNINGS AND CAUTIONS
iii
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Warnings and cautions
WARNING
Disconnect electrical power
Disconnect electrical power before installing supply wiring or performing service or maintenance procedures on any
part of the humidification system. Failure to disconnect electrical power could result in fire, electrical shock, and other
hazardous conditions. These hazardous conditions could cause property damage, personal injury, or death.
Contact with energized circuits can cause property damage, severe personal injury, or death as a result of electrical shock
or fire. Do not remove humidifier electrical panel cover, heater terminal cover, or subpanel access panels until electrical
power is disconnected.
Follow the shutdown procedure in this manual before performing service or maintenance procedures on any part of the
system.
mc_052410_1510
Electric shock hazard
If the humidifier starts up responding to a call for humidity during maintenance, severe bodily injury or death from electric
shock could occur. To prevent such start-up, follow the procedure below before performing service or maintenance
procedures on this humidifier (after the tank has cooled down and drained):
1. Use Vapor-logic
®
keypad/display to change control mode to Standby.
2. Shut off all electrical power to humidifier using field-installed fused disconnect, and lock all power disconnect switches in
OFF position.
3. Close field-installed manual water supply shut-off valve.
mc_050808_1540
CAUTION
Hot discharge water
Discharge water can be as hot as 212 °F (100 °C) and can damage the drain plumbing.
To prevent such damage from humidifiers without water tempering, allow the tank to cool before draining.
Humidifiers equipped with a water tempering device such as a DriSteem Drane-kooler need fresh make-up water in order to
function properly. Make sure the water supply to the water tempering device remains open during draining.
Excessive supply water pressure
Supply water pressure greater than 80 psi (550 kPa) can cause the humidifier to overflow.
mc_030910_1440
iv
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Table of contents
ATTENTION INSTALLER
Read this manual before installing.
Leave manual with product owner.
DriSteem
®
Technical Support
800-328-4447
WHERE TO FIND MORE INFORMATION
Our web site:
The following documents are available on our
web site: www.dristeem.com
• Catalogs
– Vapormist
– Ultra-sorb
®
• Installation, Operation, and Maintenance
manuals (IOM)
– Ultra-sorb
– Vapor-logic controller (includes
humidifier operation and troubleshooting)
• DriSteem Humidification System Design
Guide (includes steam loss tables and
general humidification information)
DriCalc
®
:
DriCalc, our software for humidification system
sizing and selection, can be ordered at our
web site. Also in DriCalc:
• Library of installation guides
• Dispersion and sensor placement in ducts
and air handlers
• Vertical airflows
Call us at 800-328-4447
Obtaining documents from our web site or
from DriCalc is the quickest way to view our
literature, or we will be happy to mail literature
to you.
WARNINGS AND CAUTIONS ...................................................ii
OVERVIEW
Product overview .........................................2
SPECIFICATIONS
Capacities, electrical specifications, and weights ..................4
Dimensions .............................................5
Dispersion options ........................................6
Selecting a location ......................................7
INSTALLATION
Mounting ..............................................8
Piping
Tap/softened water ...................................10
RO/DI water option ...................................11
Supply water and drain piping ...........................12
Drane-kooler ........................................13
Wiring ...............................................14
Sensor placement .......................................16
Dispersion
Selecting the dispersion assembly location ...................18
Interconnecting piping requirements ........................19
Drip tee installation ...................................21
SDU-I and SDU-E .....................................22
Single dispersion tube .................................28
Rapid-sorb .........................................30
Ultra-sorb ..........................................36
1
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Table of contents
Keypad/display and troubleshooting
The Vapor-logic version 5 Installation and
Operation Manual, which was shipped with
your humidifier, is a comprehensive operation
manual. Refer to it for information about using
the keypad/display and Web interface, and for
troubleshooting information.
Download DriSteem literature
Most DriSteem product manuals can be
downloaded, printed, and ordered from our
web site: www.dristeem.com
mc_052410_1335
OPERATION
Principle of operation .....................................37
Start-up checklist ........................................38
Start-up procedure .......................................39
MAINTENANCE
Tap/softened water ......................................40
RO/DI water option ......................................44
REPLACEMENT PARTS
Humidifier ............................................46
SDU-E ...............................................48
SDU-I ................................................49
Subpanel .............................................50
WARRANTY .......................................................Back cover
2
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Vapormist humidifiers use heat caused by electrical resistance in submerged
heating elements boil fill water into humidification steam. Water level is
controlled by means of conductivity probes or a float valve, depending on the
water type.
Supply water guidelines
Supply water quality is an important component
of humidifier reliability and maintenance.
Examples:
• Corrosive water can decrease the service
life of the humidifier.
• Excessive water hardness can increase the
humidifier maintenance requirements.
To maximize humidifier service life and
minimize humidifier maintenance, DriSteem
has established guidelines for supply water
See Table 2-1.
FIGURE 2-1: VAPORMIST HUMIDIFIER
OM-2000-X
Water level control
Steam outlet
Fill valve
Evaporating chamber
Shroud
Heating elements
Vapor-logic controller
keypad/display
Table 2-1:
DriSteem supply water guidelines
Total hardness 0 to 500 ppm
Chlorides*
RO or DI water
Softened water
Tap water
* Damage caused by
chloride corrosion is not
covered by your DriSteem
warranty.
< 5 ppm
< 25 ppm
< 50 ppm
pH
RO, DI, or softened water
Tap water
7 to 8
6.5 to 8.5
Silica < 15 ppm
You may wish to take action to mitigate
potential negative effects to your humidifier.
Supply water outside of these guidelines may
void your DriSteem warranty. Please contact
your DriSteem Representative or DriSteem
Technical Support if you need advice.
TAP/SOFTENED WATER
Tap/softened water Vapormist humidifiers (shown above) use conductivity
probes to monitor the water level. See Figure 3-2. Water conductivity must
be at least 30 µS/cm for proper operation. Vapormist humidifiers for tap or
softened fill water will not operate with RO/DI water. For RO/DI water, use
Vapormist with the RO/DI water option.
RO/DI WATER OPTION
Vapormist humidifiers with the RO/DI water option (deionized water or water
that has been treated using reverse osmosis) control water level with a float
valve and low water cutoff switch. See Figure 3-3. Float valves are compatible
with RO/DI water only.
Humidifiers with the RO/DI water option are virtually maintenance free and
require little or no downtime.
WATER TYPE CONVERSION
Vapormist humidifiers can be converted in the field for use with tap/softened
water or RO/DI water. Contact your DriSteem representative or distributor for
parts and instructions.
mc_061610_1640-VM
Product overview
OVERVIEW
3
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Product overview
OVERVIEW
CONTROLLER
The Vapor-logic controller in Vapormist humidifiers provides menus for all
humidifier functions, with a Web interface for Ethernet access (see Figure 3-1).
The Vapor-logic version 5 Installation and Operation Manual ships with
Vapormist humidifiers. Refer to it for information on using the keypad/display
and Web interface, and for troubleshooting information.
WEB INTERFACE
Notes:
See Pages 10 and 11 for detailed installation
drawings.
Humidifiers using tap or softened water control
water levels electronically using a three-rod
probe. The controller responds with the above
actions when the water level reaches each rod.
VLC-OM-030
Fill valve opens when
water level is below this
probe.
Low-water cutoff. Power to
heaters is cut if water level
drops below this probe.
Fill valve closes when water
level rises to this probe.
mc_030910_1335
FIGURE 3-2: WATER LEVEL CONTROL
FOR TAP/SOFTENED WATER HUMIDIFIER
Supply water connection
Float rod
Float ball
OM-7396
Humidifiers using RO/DI water control water
levels using a float valve and low-water cutoff
switch.
mc_052710_1644
FIGURE 3-3: WATER LEVEL CONTROL
FOR RO/DI WATER OPTION HUMIDIFIER
Softkeys
for direct menu access
Navigation buttons
for item selection
System alarms
Tank status
Set point
System messages
Mode
Room RH
Steam output
Tank water level
KEYPAD/DISPLAY
FIGURE 3-1: VAPOR-LOGIC KEYPAD/DISPLAY AND WEB INTERFACE
4
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Table 4-1:
Vapormist capacities, electrical specifications, and weights
VM
model
Maximum
steam capacity
Current draw (amps) Weights ‡
Single-phase Three-phase Shipping Operating
kW lbs/hr kg/h 120V 208V* 240V* 277V 480V† 600V† 208V* 240V† 277V 480V† 600V† lbs kg lbs kg
2 6 2.7 16.7 9.6 8.3 7.2 4.2 3.3 — — — — — 80 36 95 43
4 12 5.4 33.3 19.2 16.7 14.4 8.3 6.7 16.7** 14.4** 12.5 7.2** 5.8** 80 36 95 43
6 18 8.2 — 28.8 25.0 21.7 12.5 10.0 25.0** 21.7** 18.8 10.8** 8.7** 88 40 122 55
8 24 10.9 — 38.5 33.3 28.9 16.7 13.3 33.3** 28.9** 25.0 14.4** 11.5** 88 40 122 55
10 30 13.6 — — 41.7 36.1** 20.8 16.7 29.1** 25.3** 21.9 12.6** 10.1** 93 42 139 63
12 36 16.3 — — — 43.3 25.0 20.0 33.3 28.9 25.0 14.4 11.5 93 42 139 63
14 42 19.1 — — — — 29.2 23.3 38.9 33.7 29.2 16.8 13.5 93 42 139 63
16 48 21.8 — — — — 33.3 26.7 44.4 38.5 33.3 19.2 15.4 93 42 139 63
21 63 28.6 — — — — 43.8 35.0 — — 43.8 25.3 20.2 95 43 152 69
25 75 34.0 — — — — — 41.7 — — — 30.1 24.1 95 43 152 69
30 90 40.9 — — — — — — — — — 36.1 28.9 101 46 156 71
34 102 46.3 — — — — — — — — — 40.9 32.7 101 46 156 71
* On 208V/240V/single-phase/three-wire and on 208V/three-phase/four-wire supplies, the neutral line provides a separate 120V circuit for the
SDU fan unit.
** For wire sizing, the highest leg draw is shown due to current imbalance.
† Add the following to Vapormist weights if using an SDU option (these weights are for additional control components housed within the Vapormist
cabinet):
– SDU-I: 12 lbs (5.5 kg) (SDU-I operating weight is 58 lbs [26 kg])
– SDU-E: 9 lbs (4 kg) (SDU-E operating weight is 51 lbs [23 kg]))
‡ Add the following if using the SSR option:
– For single-phase or three-phase models drawing less than 32.7 amps, add 2 lbs (1 kg)
– For three-phase models drawing more than 32.7 amps, add 4 lbs (2 kg)
All Vapormist models operate at 50/60 Hz.
mc_042610_0900
Capacities, electrical specifications, and weights
SPECIFICATIONS
DC-1168
Hose clamp (for steam hose)
Table 4-2:
Steam connection sizes
VM model Steam outlet
2, 4, 6, 8 1½" hose or NPT connection
10*, 12*, 14* ,16* 1½" or 2" hose or NPT connection
21, 25, 30, 34 2" hose or NPT connection
* If using with an SDU-E (Space Dispersion Unit External Absorption),
the Vapormist steam outlet must be 2" to match the SDU-E steam inlet.
mc_052410_1705-VM
mc_052510_1531-VM
The steam outlet is
designed to connect to
a steam hose or NPT
connection. Tap/softened
water Vapormist shown.
FIGURE 4-1: STEAM OUTLET CONNECTIONS
5
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
SPECIFICATIONS
DC-1167
2" (50 mm)
Venting
0.90" (23 mm) hole in
base for water fill line
Steam outlet
Top view
24.2" (614 mm)
Left side view Front view
Bottom view
2.25" (57 mm)
16.1" (409 mm)
18.6"
(472 mm)
2.25" (57 mm)
24.2" (614 mm)
0.70" (18 mm)
10.9"
(276 mm)
2" (50 mm)
1" (25 mm)
2.25" (57 mm)
1.50" (38 mm)
5.75" (146 mm)
3/4" pipe thread (DN20) frame drain
3/4" pipe thread (DN20) tank drain
0.63"
(16 mm)
1.50" (38 mm)
5.75" (146 mm)
Control or SDU wiring knockout
Power wiring knockout
Control or SDU wiring
knockout
Power wiring knockout
Dimensions
FIGURE 5-1: VAPORMIST DIMENSIONS
6
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
SPECIFICATIONS
OM-637-1
OM-82-4-X
Dispersion options
Ultra-sorb
Rapid-sorb
Single dispersion tube
The duct dispersion options in Figure 6-1 and the open space dispersion options in Figure 6-2 are available for
Vapormist humidifiers. For installation details, see “Dispersion” beginning on Page 18.
OM-56-1
Remote from humidifier
Directly above humidifier
OM-55-1
mc_052510_1620
Air
intake
vents
Steam
outlet
FIGURE 6-1: VAPORMIST HUMIDIFIER DUCT
DISPERSION OPTIONS
FIGURE 6-2: SDU MOUNTING OPTIONS
OM-636-1
7
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Selecting a location
HUMIDIFIER
When selecting a location for the humidifier, consider the following:
• Proximity to the duct
Install the humidifier near the air duct system where the dispersion assembly
will be located. The maximum recommended length for steam hose
connecting a single humidifier to a dispersion assembly is 10' (3 m). The
maximum recommended developed length for tubing connecting a single
humidifier to a dispersion assembly is 20' (6 m).
For more information about installing dispersion assemblies, see
“Dispersion,” beginning on Page 18.
• Elevation of the installed dispersion assembly
The recommended installation location for the dispersion assembly is at an
elevation higher than the humidifier. However, if the dispersion assembly
must be installed at an elevation lower than the humidifier, install a drip tee
and drain. See “Drip tee installation” on Page 21.
Before installing a dispersion assembly or interconnecting piping, review all
pitch requirements in the “Dispersion” section of this manual.
• Required clearances (see Figure 9-1)
• Electrical connections
Electrical power supply connections are at the lower or upper right rear
corner of the unit. See “Wiring” on Pages 14 and 15.
• Supply water and drain piping connections
Water supply piping and drain connections are at the lower left rear corner
of the unit. See the piping illustrations and instructions starting on Page 10.
• Exterior wall insulation
Install the humidifier on an exterior wall only if the wall is properly
insulated.
DISPERSION CONTROL DEVICES
See Figure 17-1 for recommended installation locations for the dispersion
assembly and associated control devices.
mc_062810_0928-NA
Removable
evaporating
chamber
Incoloy-sheathed
immersion heaters
Mounting keyholes
Supply
water
connection
Electrical
area
Electrical
knockouts
Flexible steam hose or tubing connects
to dispersion tube(s) or to an SDU
Duct
Single dispersion tube
with condensate return
OM-82-4
mc_061610_1655-VM
Skimmer port
Drain
FIGURE 7-1: INSTALLATION OVERVIEW
SPECIFICATIONS
8
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Mounting
WARNING
Mounting hazard
Mount humidifier per the instructions
in this manual and to a structurally
stable surface. Improper mounting of
the humidifier can cause it to fall or tip,
resulting in severe personal injury or
death.
mc_060110_1540
WALL MOUNTING THE HUMIDIFIER
Mount the humidifier level and plumb, using the lag bolts provided. Follow the
instructions below for mounting on a stud wall with wood studs 16" (406 mm)
on center. See Figures 10-1 and 11-1.
1. Mark hole locations at centers of studs, and predrill 1/4" (6 mm) diameter
pilot holes.
2. Secure cabinet to wall with lag bolts provided. See mounting keyholes in
Figure 8-1.
Note: Use the appropriate mounting methods and mounting hardware for other
wall types.
INSTALLATION
OM-282-7X
18.5"
(470 mm)
16" (406 mm)
3" (76 mm)
24" (610 mm)
Keyhole for
3/8" dia. (M10)
fasteners
Vapormist chassis
FIGURE 8-1: VAPORMIST MOUNTING KEYHOLE LOCATIONS AND DIMENSIONS
9
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Top (when SDU is not mounted directly above the Vapormist): 18"(460 mm)
Right side electrical controls: 36" (915 mm)
Supporting wall
Front 36" (915 mm)
Floor: 24" (610 mm)
Left side: 12" (305 mm)
Secured to supporting wall
To dispersion assembly
DC-1201
mc_042710_1326-VM
Maintain these clearances for service and maintenance.
Mounting
INSTALLATION
FIGURE 9-1: VAPORMIST CLEARANCE RECOMMENDATIONS
10
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Water supply line:
• 1/4" NPT (DN8) connection size
• 25 to 80 psi (175 to 550 kPa) required water
pressure.
• If water piping to humidifier is nonmetallic,
the first 3' (1 m) of water supply piping from
humidifier should be metallic.
Steam hose (maximum run 10' [3 m]). May also use tubing.
See the DriSteem Design Guide for maximum tubing lengths.
Unions by installer
Shock arrester recommended
to reduce water hammer
3/4" pipe thread (DN20)
tank drain, skimmer, and
P-trap piping, rated for
212°F (100 °C). If piping
run is over 10' (3 m),
increase pipe to 1¼"
(DN32) after P-trap.
1" (25 mm) air gap
Spill funnel. Plumb
to floor drain.
Open drain required.
See first note below.
3/4" pipe thread (DN20) frame
drain and P-trap piping, rated for
212 °F (100 °C)
Frame drain
Cover
Install plumb
DC-1136
Notes:
• Locate air gap only in spaces with adequate temperature and air movement to absorb flash steam; otherwise, condensation may form on nearby
surfaces. Refer to governing codes for drain pipe size and maximum discharge water temperature.
• Offset humidifier from spill funnel or floor drain to prevent flash steam from rising into cabinet.
• Dashed lines indicate provided by installer.
• Water supply inlet is more than 1" (25 mm) above skim/overflow port, eliminating the possibility of backflow or siphoning from tank. No additional
backflow prevention is required; however, governing codes prevail.
• Install a union in water supply and drain lines as shown to allow tank removal.
• Damage caused by chloride corrosion is not covered by your DriSteem warranty.
2" (50 mm)
12" (300 mm)
2" (50 mm) water seal or loop in
supply line to isolate steam from
nonmetallic supply piping
mc_042710_1327-VM
Piping: Tap/softened water
FIGURE 10-1: VAPORMIST (TAP/SOFTENED WATER) FIELD PIPING OVERVIEW
11
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Piping:
INSTALLATION
Unions by installer
Strainer, by installer
3/4" pipe thread (DN20) tank
drain, and P-trap piping, rated
for 212 °F (100 °C). If piping
run is over 10' (3 m) increase
pipe to 1¼" (DN32) after P-trap.
1" (25 mm) air gap
Spill funnel. Plumb
to floor drain
Frame drain
Cover
Install plumb
DC-1139
First 3' (1 m) of water supply line
should be stainless steel tubing with
a 2" (50 mm) water seal or loop in
the supply line to isolate steam from
nonmetallic supply piping.
2" (50 mm)
12" (300 mm)
Notes:
• Locate air gap only in spaces with adequate temperature and air movement to absorb flash steam; otherwise, condensation may form on nearby
surfaces. Refer to governing codes for drain pipe size and maximum discharge water temperature.
• Offset humidifier from spill funnel or floor drain to prevent flash steam from rising into the cabinet.
• Dashed lines indicate provided by installer.
• The water supply inlet is more than 1" (25 mm) above the overflow port, eliminating the possibility of backflow or siphoning from the tank. No
additional backflow prevention is required; however, governing codes prevail.
• Install a union in the water supply and drain lines as shown to allow tank removal.
• Damage caused by chloride corrosion is not covered by your DriSteem warranty.
Open drain required.
See first note below.
3/4" pipe thread (DN20) frame drain
and P-trap piping, rated for 212 °F
(100 °C)
Steam hose (maximum run 10' [3 m]). May also use tubing.
See the DriSteem Design Guide for maximum tubing lengths.
mc_042710_1328-VM
Water supply line:
• ¼" NPT (DN8) connection size
• 25 to 80 psi (175 to 550 kPa)
required water pressure.
RO/DI water option
FIGURE 11-1: VAPORMIST (RO/DI WATER OPTION) FIELD PIPING OVERVIEW
12
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Piping:
INSTALLATION
Supply water piping may be of any code-approved material (copper, steel,
or plastic). The fill valve connection size is a 1/4" pipe thread (DN8) fitting
except in Europe where it is a DN10 pipe thread fitting. In cases where water
hammer may be a possibility, consider installing a shock arrestor. Water
pressure must be between 25 psi and 80 psi (175 kPa and 550 kPa).
If water piping to humidifier is nonmetallic, we recommend that the first 3' (1
m) of water supply piping from the humidifier be metallic with a 2" (50 mm)
water seal or loop in the supply line to isolate steam from nonmetallic supply
piping.
Drain piping may be of any code-approved material (copper, steel, or plastic
rated for 212 °F [100 °C] minimum). If drainage by gravity is not possible, use
a reservoir pump rated for 212 °F (100 °C) water.
The final connection size is 3/4" (DN20) copper for the tank and frame
drains. Do not reduce this connection size. Pipe the tank and frame drains
separately, as shown in Figures 10-1 and 11-1, to prevent backflow of drain
water into the humidifier cabinet.
If the equivalent length of pipe from the humidifier drain to the plumbing system
drain is more than 10' (3 m), increase the pipe size to 1¼" (DN32).
See Figures 10-1 and 11-1 for more piping instructions.
Important: Install unions in the water supply and drain lines as shown in
Figures 10-1 and 11-1 to allow tank removal.
mc_062810_0930-VM
CAUTION
Hot discharge water
Discharge water can be as hot as
212 °F (100 °C) and can damage the
drain plumbing.
To prevent such damage from
humidifiers without water tempering,
allow the tank to cool before draining.
Humidifiers equipped with a water
tempering device such as a DriSteem
Drane-kooler need fresh make-up
water in order to function properly.
Make sure the water supply to the
water tempering device remains open
during draining.
Excessive supply water pressure
Supply water pressure greater than 80
psi (550 kPa) can cause the humidifier
to overflow.
mc_030910_1440
DriSteem's Drane-kooler, shown
mounted to a humidifier, tempers
discharged water. For other
Drane-kooler mounting options or
for more information, contact your
DriSteem representative/distributor,
or view the Drane-kooler product
data sheet in the literature section
at www.dristeem.com
OM-7398
mc_061710_1449
Supply water and drain piping
FIGURE 12-1: DRANE-KOOLER WATER TEMPERING DEVICE
13
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Piping:
DC-1160
DC-1138
mc_050610_1345
Note:
Use a condensate pump rated for your application. Pumps are rated by
fluid temperature, head (pressure), and flow (gpm). Contact your local
DriSteem representative for pump selection.
Funnel
Condensate pump
Check valve
Frame drain
Tank drain
Discharge piping by installer
mc_050610_1335-w/frame-drain
Drane-kooler
FIGURE 13-1: DRANE-KOOLER FIELD PIPING CONNECTIONS
Tank drain
Frame drain
Hot drain water inlet, 1" (DN25)
Union
Union
Vacuum breaker
Tempered water overflow 12
gpm (45.4 lpm) 140°F (60°C)
Tempered water outlet, 2" (DN50)
Union
Drane-kooler
Part No. 902205 (NPT connections)
Part No. 902206 (BSP connections)
Suppy water inlet, 3/8" (DN10) 25
to 80 psi (172 to 552 kPa) Maximum
temperature 70 °F (21 °C)
Supply water shut-off valve
Notes:
• Dashed lines indicate provided by installer.
• Total length of pipe between humidifier and
Drane-kooler not to exceed 10' (3 m).
Field piping
Floor
FIGURE 13-2: LIFTING DRAIN WATER
14
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Fused
disconnect
(provided by
installer)
Power
supply
(provided
by installer)
OM-1007
Notes:
• Control wiring and power wiring must be
run in dedicated or separate earthed metal
conduit, cable trays, or trunking.
• Separate the line voltage wiring from low
voltage control circuit wiring when routing
electrical wiring inside the humidifier
cabinet.
• Do not use chassis or safety grounds as
current-carrying commons. Never use a
safety ground as a conductor or neutral to
return circuit current.
INSTALLATION
HUMIDIFIER FIELD WIRING
All wiring must be in accordance with all governing codes, and with the
humidifier wiring diagrams. The diagrams are located inside the removable
subpanel cover on the right side of the humidifier cabinet. Power supply wiring
must be rated for 220 °F (105 °C).
When selecting a location for installing the humidifier, avoid areas close to
sources of electromagnetic emissions such as power distribution transformers.
The fill valve, drain valve, probes, and temperature sensors use Class 2, 24
VAC power.
The use of semiconductor fusing sized per the National Electric Code is
recommended with the SSR option.
GROUNDING REQUIREMENTS
The approved earth ground must be made with solid metal-to-metal connections
and must be a good conductor of radio frequency interference (RFI) to earth
(multistranded conductors).
Ground wire should be the same AWG (mm2) size as the power wiring or
sized per NEC requirements (in Europe, IEC 60364 requirements).
PROPER WIRING TO PREVENT ELECTRICAL NOISE
Electrical noise can produce undesirable effects on electronic control circuits,
which affects controllability. Electrical noise is generated by electrical
equipment such as inductive loads, electric motors, solenoid coils, welding
machinery, or fluorescent light circuits. The electrical noise or interference
generated from these sources (and the effect on controllers) is difficult to define,
but the most common symptoms are erratic control or intermittent operational
problems.
Important:
• For maximum EMC (electromagnetic compatibility) effectiveness, wire all
humidity, high limit, and airflow controls using multicolored shielded/
screened plenum-rated cable with a drain wire for the shield/screen.
Connect the drain wire to the shield/screen ground terminal with wire less
than 2" (50 mm) in length.
• Do not ground shield at the device end.
mc_061610_0625-NA
Wiring
WARNING
Electric shock hazard
Only qualified electrical personnel
should perform field wiring installation
procedures. Improper wiring or contact
with energized circuits can cause
property damage, severe personal
injury, or death as a result of electric
shock and/or fire.
Do not remove the humidifier electrical
panel cover or the heater terminal cover
until electrical power is disconnected.
Contact with energized circuits can
cause property damage, severe
personal injury, or death as a result of
electrical shock.
mc_062310_0629
mc_062310_0630-VMHT
Vapormist
humidifier
FIGURE 14-1: FIELD WIRING
REQUIREMENTS
15
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Wiring
Shield/screen ground lug
Vapor-logic
keypad/display
Microprocessor
board
OM-1505
Note:
For maximum EMC effectiveness, all humidity, temperature, and airflow controls should be wired
using multicolored shielded/screened plenum-rated cable with a drain wire for the shield/screen.
The drain wire should be connected to the shield/screen ground terminal with its length kept to
less than 2" (50 mm).
Humidifier side view
INSTALLATION
Table 15-1:
European wiring requirements
230 volt single phase 400 volt three phase
Amps Wire size mm
2
Ground wire size mm
2
Amps Wire size mm
2
Ground wire size mm
2
0 - 18 2.5 2.5 0 - 15.7 2.5 2.5
18.1 - 24 4 4 15.8 - 21 4 4
24.1 - 30.7 6 6 21.1 - 27 6 6
30.8 - 42.7 10 10 27.1 - 37.5 10 10
42.8 - 57 16 16 37.6 - 51 16 16
57.1 - 75.7 25 16 51.1 - 66.7 25 16
75.8 - 93.7 35 16 66.8 - 82.5 35 16
93.8 - 113.2 50 25 82.6 - 100.5 50 25
113.3 - 144 70 35 100.6 - 128.2 70 35
144.1 - 174 95 50 128.3 - 155.2 95 50
174.1 - 201.7 120 70 155.3 - 179.2 120 70
mc_062310_0615
Table 15-2:
European breaker requirements
I max. A Breaker size
0 - 8.0 10
8.1 - 10.4 13
10.5 - 12.8 16
12.9 - 16 20
16.1 - 20 25
20.1 - 25.6 32
25.7 - 32 40
32.1 - 40 50
40.1 - 50.4 63
50.5 - 64 80
64.1 - 80 100
80.1 - 100 125
100.1 - 128 160
128.1 - 160 200
mc_062310_0616
mc_062310_0634
FIGURE 15-1: SHIELDED/SCREENED CABLE DRAIN WIRE CONNECTION TO LUG
16
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Other factors affecting humidity control
Humidity control involves more than the
controller’s ability to control the system. Other
factors that play an important role in overall
system control are:
• Size of humidification system relative to
load
• Overall system dynamics associated with
moisture migration time lags
• Accuracy of humidistats and humidity
transmitters and their location
• Dry bulb temperature accuracy in space
or duct
• Velocities and airflow patterns in ducts
and space environments
• Electrical noise or interference
mc_072011_1656
SENSOR LOCATION IS CRITICAL
Sensor location has a significant impact on humidifier performance. See the
recommendations below and Figure 17-1.
Note: DriSteem recommends that you do not interchange room and duct
humidity devices. Room humidity devices are calibrated with zero or
little airflow, whereas duct humidity devices require air passing across
them.
Recommended humidity control (transmitter/humidistat) locations:
A. Ideal. Ensures the best uniform mix of dry and moist air with stable
temperature control.
B. Acceptable, but room environment can affect controllability, such as when
sensor is too close to air grilles, registers, or heat radiation from room
lighting.
C. Acceptable. Provides uniform mixture of dry and moist air. If extended time
lag exists between humidity generation and sensing, extend sampling time.
D. Acceptable (behind wall or partition) for sampling entire room if sensor is
near an air exhaust return outlet. Typical placement for sampling a critical
area.
E. Not acceptable. These locations might not represent actual overall
conditions in the space.
F. Not acceptable. Do not place sensors near windows, door passageways,
or areas of stagnant airflow.
Recommended safety (airflow and high limit) sensor location:
G. Best sensing location for high limit humidistat or humidity sensor and airflow
proving switch.
mc_072011_1655
Sensor placement
17
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
•
•
•
•
•
•
•
•
INSTALLATION
DC-1084
Outside air
Relief air
Return air
Air handling
unit
8' to 12'
(2.4 m to 3.7 m)
min.
Humidifier dispersion assembly
Turning vanes
Window
Doorway
Window
Point of vapor absorption
Vapor absorption has taken place
Airflow switch or differential pressure switch (sail type
recommended for VAV applications)
High limit humidistat or high limit transmitter (set at 90% RH
maximum) for VAV applications
Damper control
C
A
E
F
D
B
E
F
G
E
Wall or partition
mc_060508_0750
Sensor placement
Temperature compensation option: Place a temperature
compensation sensor on the lower corner of the inside surface of
double-pane window glass on north- or northeast-facing window.
FIGURE 17-1: RECOMMENDED SENSOR LOCATIONS
18
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Dispersion:
High-efficiency Tube option
Dispersion assemblies with the High-efficiency
Tube option are designed to produce
significantly less dispersion-generated
condensate and airstream heat gain, which
reduces wasted energy by up to 85%.
These improvements are accomplished by
reducing the thermal conductivity of the tubes
with 1/8" of polyvinylidene fluoride (PVDF)
insulating material on the outside of the tubes.
These assemblies require careful unpacking,
installation, and handling. If your dispersion
assembly has the High-efficiency Tube option,
be sure to read this section carefully.
mc_060208_1320
DriSteem humidifiers operate with several types of dispersion assemblies for
open spaces and for ducts and air handling units.
Dispersion assemblies in ducts and air handling units must be positioned where
the water vapor being discharged is carried off with the airstream and is
absorbed before it can cause condensation or dripping.
• Non-wetting distance is the dimension downstream from the leaving
side of the steam dispersion assembly to the point where wetting will
not occur, although wisps of steam may be present. This distance
was calculated during humidification system design and is dependent
on several application parameters. To determine your dispersion
assembly’s non-wetting distance, consult your system’s design engineer
or project documentation. Non-wetting distance can also be calculated
using DriSteem’s DriCalc sizing and selection software, available at
www. dristeem.com. Note that your current design conditions may vary
from conditions used for system design.
• In general, the dispersion assembly is best placed where the air can absorb
the moisture being added without causing condensation at or after the unit.
This normally will be after the heating coil or where the air temperature is
highest.
• Place the dispersion assembly such that absorption will occur
– before the intake of a high efficiency filter, because the filter can remove
the visible moisture and become waterlogged;
– before coming in contact with any metal surface;
– before fire or smoke detection devices;
– before a split in the duct; otherwise, the dispersion assembly can direct
more moisture into one duct than the other.
• When draining dispersion condensate to an open drain, provide a 1"
(25 mm) air gap between the condensate drain piping and the drain.
Locate the gap only in spaces with adequate temperature and air movement
to absorb flash steam; otherwise, condensation may form on nearby
surfaces.
mc_060210_0838
INSTALLATION
Selecting the dispersion assembly location
FIGURE 18-1: ULTRA-SORB WITH THE
HIGH-EFFICIENCY TUBE OPTION
19
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Dispersion:
Important:
Reducing the inside diameter of the steam hose
or tubing will result in the internal humidifier
system pressure exceeding the parameters for
acceptable performance.
mc_060210_0847
Important:
Failure to follow the recommendations in this
section can result in excessive back pressure on
the humidifier. This will result in unacceptable
humidification system performance such as
leaking gaskets, blown water seals, erratic
water level control, and spitting condensate
from dispersion tubes.
mc_060210_0843
The steam outlet on the humidifier is sized to the output of the humidifier.
DO NOT use steam hose or tubing with an inside diameter smaller than the
humidifier steam outlet. See note at left.
• See maximum steam carrying capacities in Table 19-1.
• If the humidifier must be located higher than the dispersion assembly, use
the recommended installation shown in Figure 21-1.
CONNECTING TO HUMIDIFIER WITH STEAM HOSE
• Support steam hose to prevent sags, or low spots, and to maintain a
minimum pitch of 2"/ft (15%) back to the humidifier.
• Use DriSteem steam hose. Other manufacturers of steam hose may use
unacceptable release agents or material mixes that can affect humidifier
system performance adversely. Using hose from alternative manufacturers
increases the possibility of tank foaming and accelerated aging. Foaming
causes condensate discharge at the dispersion assembly.
• Do not use steam hose in outdoor applications.
• Do not insulate steam hose. Insulation causes accelerated heat aging,
causing the steam hose to become hard and susceptible to failure due to
cracks.
• For single dispersion tube applications, see hose kit sizes in Table
29-1.
Table 19-1:
Maximum steam carrying capacity and length of interconnecting steam hose or tubing
Steam hose
1
Copper or stainless steel tubing
Hose I.D. Maximum capacity Maximum length
2
Tubing size Maximum capacity
3
Maximum developed length
4
inches DN lbs/hr kg/h ft m inches DN lbs/hr kg/h ft m
1½ 40 150 68 10 3 1½ 40 150 68 20 6.1
2 50 250 113 10 3 2 50 220 100 30 9.2
1. When using steam hose, use DriSteem steam hose for best
results. Field-supplied hose may have shorter life and may cause
foaming in the evaporating chamber resulting in condensate
discharge at the dispersion assembly. Do not use steam hose for
outdoor applications.
2. Maximum recommended length for steam hose is 10' (3 m).
Longer distances can cause kinking or low spots.
3. Insulate tubing to minimize loss of capacity and efficiency.
4. Developed length of tubing equals measured length plus 50% of measured
length, to account for fittings.
Longer tubing lengths are possible at capacities lower than listed maximums.
Consult factory.
Note: Capacities and lengths in this table are based on total maximum pressure drop in hose or tubing of 5" wc (1250 Pa)
mc_091410_1050-VM
Interconnecting piping requirements
20
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Dispersion:
INSTALLATION
Table 20-1:
Steam loss of interconnecting steam hose or tubing
Description
Nominal hose or tubing size
Steam loss
Insulation thickness
Noninsulated Insulated
inches DN lbs/hr/ft kg/h/m lbs/hr/ft kg/h/m inches mm
Steam hose
1½ 40 0.15 0.22 N/A N/A N/A N/A
2 50 0.20 0.30 N/A N/A N/A N/A
Tubing
1½ 40 0.11 0.16 0.020 0.030 2 50
2 50 0.14 0.21 0.025 0.037 2 50
Note: These data are based on an ambient air temperature of 80 °F (27 °C), fiberglass insulation, and copper tubing.
mc_051310_1215
CONNECTING TO HUMIDIFIER WITH TUBING
• See Figures 28-1 and 29-1 for interconnecting tubing pitch requirements
for single dispersion tube applications. See Table 31-1 for interconnecting
tubing pitch requirements for Rapid-sorb applications.
• Support tubing between the humidifier steam outlet and the dispersion
system with pipe hangers. Failure to properly support the entire tubing
weight may cause damage to the humidifier tank and void the warranty.
• 90° elbows are not recommended; use two 45° elbows, 1' (0.3 m) apart.
• Insulate tubing to reduces the loss in output caused by condensation.
mc_060310_1145-NA
WARNING
Excessive moisture hazard
DriSteem strongly recommends
installing a duct airflow proving switch
and a duct high limit humidistat. These
devices prevent a humidifier from
making steam when there is low airflow
in the duct or when the RH level in the
duct is too high. Failure to install these
devices can result in excessive moisture
in the duct, which can cause bacteria
and mold growth or dripping through
the duct.
mc_060310_0725
Interconnecting piping requirements
21
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Dispersion:
Install a drip tee as shown below when the humidifier is mounted higher than
the dispersion assembly, when interconnecting hose or tubing needs to go over
an obstruction, or when interconnecting piping runs are long.
Important: Steam hose must be supported to prevent sagging or low spots.
DC-1450
90° long sweep or two 45° elbows
Obstruction
Insulate tubing to reduce steam loss
To dispersion assembly
6" (150 mm) recommended
8" (200 mm) minimum
1" (25 mm) air gap
Open funnel or floor drain. See first note below.
3/4" (DN20)
Tubing drip tee, by installer. DriSteem part numbers for 304
stainless steel inline tees:
• 1½" (DN40): Part No. 162710
• 2" (DN50): Part No. 162712
Pitch
Vapormist humidifier
Notes:
• Locate air gap only in spaces with adequate temperature and air movement to absorb flash steam; otherwise, condensation may form on nearby
surfaces. Refer to governing codes for drain pipe size and maximum discharge water temperature.
• Support steam hose so there are no sags or low spots.
• Dashed lines indicate provided by installer.
WARNING
Hot surface and steam hazard
Dispersion tube, steam hose, or
tubingcan contain steam, and surfaces
can be hot. Discharged steam is not
visible. Contact with hot surfaces or air
into which steam has been discharged
can cause severe personal injury.
mc_060110_1555
mc_062810_0645-VM
Drip tee installation
FIGURE 21-1: DRIP TEE INSTALLATION
22
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Dispersion:
MOUNTING SDU-I AND SDU-E
Both SDUs can be mounted on a wall directly above the Vapormist cabinet
or mounted on a wall remote from the Vapormist (see Figure 6-3). Use the
mounting template on the box for correct placement. Two lag bolts are
provided with each SDU.
• Installation must comply with governing codes.
• See interconnecting piping requirements in Table 19-1, and the drip tee
installation instructions on Page 21.
• Provide at least 6" (150 mm) clearance on each side of the SDU.
• Field wiring is required to connect the SDU fan and airflow proving switch
terminals to Vapormist electrical panel terminals. Refer to the external
connections diagram in the package shipped with your unit. See Figure
22-1. Minimum wire size for field wiring is 18-gauge (1.5 mm2) stranded
wire.
• For wall mounting, use the mounting template on the box for correct
placement. Two 3/8" lag bolts (M10 × 50 mm coach screws) are provided
with each fan unit.
• When mounting on a stud wall (studs 16" [406 mm] on center), locate studs
and position lag bolts (coach screws) in place so that each of the two lag
bolts (coach screws) centers on a stud. Mark hole locations and predrill ¼"
(6 mm) diameter pilot holes for a 3/8" × 2" lag bolt (M10 × 50 mm coach
screw).
• For hollow block or poured concrete wall mounting, position template in
place and mark the holes. Drill appropriate pilot hole for two 3/8" (M10)
toggle bolts or two 3/8" (M10) machine bolt lead anchors (expansion
bolts). Secure SDU frame in place.
WHEN PERFORMING VAPORMIST MAINTENANCE
If the SDU-E or SDU-I is installed immediately above the Vapormist, disconnect
both hose clamps on the steam hose, grip the hose and rotate it to break it
loose from the tubing, and then slide the hose up onto the SDU steam tube until
sufficient clearance is provided to move the tank.
mc_062810_1005-VM
SDU-E
Field wiring for fan
and airflow proving
switch
VLC-OM-031
Vapormist electrical
panel, right side
view
INSTALLATION
SDU-I: Instant, internal absorption
SDU-I (Space Distribution Unit Internal
Absorption) disperses humidity with no visible
vapor trail or wetness, making it ideal for use
in finished spaces. The SDU-I fan mixes room
air and steam to ensure complete absorption
before discharge as humidified air.
Important: For visible vapor to be
absorbed completely within the SDU-I unit
before being discharged as humidified air,
room air must be 45% RH or less. Trying to
maintain greater than 45% RH will cause
visible vapor and potential for moisture
collection on the discharge grille.
SDU-E: Higher capacity
SDU-E (Space Distribution Unit External
Absorption) is designed for higher capacity
dispersion. SDU-E requires an installed
condensate drain line and water seal, provided
by installer.
mc_052510_1610
SDU-I is available for Vapormist humidifier models VM-2 through VM-10.
SDU-E is available for all Vapormist humidifiers except VM-2 and models using
240V, 277V, and 480V three-phase power with the SSR control option and
drawing more than 32.7 amps.
Note: SDUs ship separate from the Vapormist.
mc_052510_1525-VM
SDU-I and SDU-E
FIGURE 22-1: SDU FIELD WIRING
23
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Dispersion:
OM-282-7
16"
(406 mm)
18.5"
(470 mm)
16" (406 mm)
3" (76 mm)
18.02"
(458 mm)
16" (406 mm)
3" (76 mm)
24" (610 mm)
2" (51 mm)
SDU chassis
Keyhole for 3/8"
dia. (M10) fasteners
Keyhole for
3/8" dia. (M10)
fasteners
OM-282-4
24" (610 mm)
SDU chassis
16" (406 mm)
16" (406 mm)
Keyhole for 3/8"
dia. (M10) fasteners
3" (76 mm)
3" (76 mm)
Keyhole for
3/8" dia. (M10)
fasteners
Vapormist
chassis
18.50"
(470 mm)
17.75"
(451 mm)
18.02"
(458 mm)
0.25"
(6.4 mm)
Vapormist
chassis
mc_052610_1505-VM
mc_052610_1506-VM
SDU-I and SDU-E
FIGURE 23-1: WALL-MOUNTED VAPORMIST AND SDU-I
FIGURE 23-2: WALL-MOUNTED VAPORMIST AND SDU-E
24
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Dispersion:
INSTALLATION
Humidified air
discharge grille
24.2"
(615 mm)
18.6"
(472 mm)
10.9"
(276 mm)
1½" (DN40)
steam inlet
Front view Side view
16.1"
(409 mm)
Air intake
grille
2.25" (57 mm)
DC-1076
Steam
outlet
24.2"
(615 mm)
18.6"
(472 mm)
10.9"
(276 mm)
1½" (DN40)
or 2" (DN50)
steam inlet
Front view Side view
16.1"
(409 mm)
Steam inlet
2.25"
(57 mm)
DC-1078
3/4" (DN20) pipe thread
drain nipple (see note below)
3.2" (82 mm)
Note: SDU-E dispersion box requires an installed condensate drain line and water seal, provided
by installer. See Figure 25-1.
mc_052510_1700-NA
mc_052510_1701-NA
Table 24-1:
SDU specifications
SDU model
Maximum capacity Shipping weight
Amps at 120V
(50/60 Hz)
Horsepower cfm m
3
/s dB*
lbs/hr kg/h lbs kg
SDU-I 30 13.6 68 31 3.20 1/5 760 0.36 58
SDU-E 102 46.3 61 28 2.07 1/8 545 0.26 64
* Measurement taken 6.5' (2 m) in front of SDU cabinet.
mc_042710_1440-NA
SDU-I and SDU-E
FIGURE 24-1: SDU-I MECHANICAL DETAIL
FIGURE 24-2: SDU-E MECHANICAL DETAIL
25
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
Dispersion:
SDU-E CONDENSATE DRAIN CONNECTION
1. Piping must be minimum 3/4" I.D. (DN20) and rated for 212 °F (100 °C)
minimum continuous operating temperature.
2. Drain line must be piped as shown in Figure 25-1. Provide a 6" (152 mm)
drop prior to a 4" (102 mm) water seal to ensure condensate drainage
from the SDU-E, and to keep steam from blowing out of the drain line.
3. After the water seal, run the drain line to an open drain with a 1" (25 mm)
vertical air gap. Cut the drain line at a 45 degree angle on the end above
the drain to permit a direct stream of water into the drain pipe while
maintaining a 1" (25 mm) air gap.
4. All drain lines must be installed and sized according to governing codes.
5. The drain line should have a union installed directly on the dispersion box
¾" nipple to accommodate future removal of the SDU-E shroud.
6. A drain line and water seal must be connected to the SDU-E fan unit
dispersion box ¾" nipple. If the condensate is not drained from the
dispersion box, standing water will accumulate. See Warning at right.
7. The dispersion box is constructed with a pitch toward the drain; however,
the SDU-E frame must be installed plumb and level for the dispersion box
to drain properly.
mc_052610_1720-NA
WARNING
Hazards of standing water in SDU-E
If standing water is allowed to
accumulate in the dispersion box, it
can:
• Cause bacteria and mold growth,
which can cause illness.
• Affect SDU-E fan unit performance.
• Cause 212 °F (100 °C) water to
discharge from the SDU-E fan unit,
which can cause severe personal
injury.
mc_052610_1725
Install SDU-E frame plumb and level
Union
Elbow
1" (25 mm)
air gap
Dispersion box
3/4" pipe thread (DN20) dispersion box drain and P-trap
piping, rated for 212 °F (100 °C)
Spill funnel. Plumb to floor drain.
Open floor drain. Refer to governing codes for drain pipe size and
maximum temperature requirements.
OM-1245
Drain
4" (102 mm)
mc_042710_1445-NA
Mounting SDU-E
• SDU-E requires an installed condensate
drain line and water seal (provided by
installer). See Figure 25-1 and instructions
at left.
• Spread dimensions greater than 3' (1 m)
may require additional clearance. See
Table 27-1).
SDU-I and SDU-E
FIGURE 25-1: SDU-E DRAIN LINE PIPING
26
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION
As steam is discharged from the SDU-E, it quickly cools and turns to a visible
fog that is lighter than air. As this fog is carried away from the SDU-E by the
airstream, it tends to rise toward the ceiling. If this fog contacts solid surfaces
(columns, beams, ceiling, pipes, etc.) before it disappears, it could collect and
drip as water. The greater the space relative humidity, the more the fog will
rise, throw and spread.
Table 27-1 lists the minimum rise, throw and spread non-wetting distances
for SDU-E at 40%, 50% and 60% RH in the space. Surfaces cooler than
ambient temperature, or objects located within this minimum dimension, can
cause condensation and dripping. To avoid steam impingement on surrounding
areas, observe the minimum non-wetting distances in Table 27-1.
The SDU-E contains a blower (120 V, single-phase, 60 Hz) and an airflow
proving switch (field-wired to the humidifier electrical panel). A wiring diagram
of the SDU-E is included with the unit.
On a call for humidity, the humidifier begins producing steam, and the start
relay energizes the SDU-E blower. When the call for humidity is satisfied, the
Vapor-logic controller keeps the blower running to disperse residual moisture
using a time delay.
mc_042710_1255
Steam outlet
Throw
Spread
Air intake grille
DC-1027
Rise
mc_042710_1435
SDU-E RISE, SPREAD, AND THROW
Dispersion: SDU-I and SDU-E
FIGURE 26-1: SDU-E RISE, SPREAD, AND THROW
27
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Dispersion:
INSTALLATION
Table 27-1:
SDU-E minimum nonwetting distances
kW
Maximum steam
capacity
40% RH @ 70 °F (21 °C) 50% RH @ 70 °F (21 °C) 60% RH @ 70 °F (21 °C)
Rise Spread Throw Rise Spread Throw Rise Spread Throw
lbs/hr kg/h ft m ft m ft m ft m ft m ft m ft m ft m ft m
2 6 2.7 1.0 0.3 1.0 0.3 5.0 1.5 1.5 0.5 1.5 0.5 6.5 2.0 2.5 0.8 2.5 0.8 7.5 2.3
4 12 5.4 1.0 0.3 1.0 0.3 5.0 1.5 1.5 0.5 1.5 0.5 6.5 2.0 2.5 0.8 2.5 0.8 7.5 2.3
6 18 8.2 1.0 0.3 1.0 0.3 5.0 1.5 1.5 0.5 1.5 0.5 6.5 2.0 2.5 0.8 2.5 0.8 7.5 2.3
8 24 10.9 1.0 0.3 1.0 0.3 5.5 1.7 1.5 0.5 1.5 0.5 6.5 2.0 2.5 0.8 2.5 0.8 7.5 2.3
10 30 13.6 1.5 0.5 1.5 0.5 6.0 1.8 2.0 0.6 2.0 0.6 7.0 2.1 3.0 1.0 3.0 1.0 8.0 2.5
12 36 16.3 1.5 0.5 1.5 0.5 6.0 1.8 2.0 0.6 2.0 0.6 7.0 2.1 3.0 1.0 3.0 1.0 8.0 2.5
14 42 19.1 2.0 0.6 2.0 0.6 7.0 2.1 2.0 0.6 2.0 0.6 7.0 2.1 3.0 1.0 3.0 1.0 9.0 2.7
16 48 21.8 2.0 0.6 2.0 0.6 7.0 2.1 2.0 0.6 2.0 0.6 7.0 2.1 3.0 1.0 3.0 1.0 9.0 2.7
21 63 28.6 2.0 0.6 2.0 0.6 7.5 2.3 2.5 0.8 2.5 0.8 10.0 3.0 3.0 1.0 3.0 1.0 12.0 3.7
25 75 34.0 2.0 0.6 2.0 0.6 8.0 2.5 2.5 0.8 2.5 0.8 10.5 3.2 3.5 1.1 3.5 1.1 12.5 3.8
30 90 40.9 2.0 0.6 2.0 0.6 8.0 2.5 2.5 0.8 2.5 0.8 10.5 3.2 3.5 1.1 3.5 1.1 12.5 3.8
34 102 46.3 2.0 0.6 2.0 0.6 8.0 2.5 2.5 0.8 2.5 0.8 10.5 3.2 3.5 1.1 3.5 1.1 12.5 3.8
Notes:
• Surfaces or objects directly in the path of steam discharge may cause condensation and dripping.
• To avoid steam impingement on surrounding areas, observe the minimum nonwetting dimensions in this table.
• Rise: The minimum nonwetting height above the steam outlet of the SDU-E.
• Spread: The minimum nonwetting width from the steam outlet of the SDU-E.
• Throw: The minimum nonwetting horizontal distance from the steam outlet of the SDU-E.
mc_042710_1300-NA
SDU-I and SDU-E
28
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Single dispersion tube
INSTALLATION NOTES
• Use a hose clamp to connect the steam outlet to steam hose. Use a hose cuff
and clamps to connect the steam outlet to tubing.
• Tubing diameter must match Vapormist steam outlet size 1½" (DN40), 2"
(DN50), or NPT connection.
• See the steam carrying capacity and steam loss tables on Pages 19 and 20.
• Orient dispersion tube with tubelets (steam orifices) pointing up.
• If mounting the humidifier above the level of dispersion tube, see “Drip tee
installation” on Page 21.
• Table 28-1 lists hose kit sizes by humidifier model. Note that the capacities of
Models 30 and 34 require multiple tube assemblies and cannot use a hose kit.
For multiple tube assemblies, see “Rapid-sorb,” beginning on Page 30.
mc_062810_1030-NA
Single dispersion tube
without condensate drain
Mounting nut
3/8" - 16 (M10)
Vapormist humidifier
Duct
Secure and seal
escutcheon plates
90° long sweep or two 45° elbows
See the first bullet in
Installation notes.
Tube pitch:
2"/ft (15%)
DC-1447
Pitch*
Steam hose or tubing. Insulate tubing to reduce
steam loss. Do not insulate steam hose. See
Table 19-1 for maximum piping lengths.
Dimension A:
• 3.25" (82.5 mm) for 1½" tubes
• 5" (127 mm) for 2" tubes
Dispersion tube escutcheon plate
OM-351-1
A
A
INSTALLATION
Dashed lines indicate provided by installer.
* Pitch steam hose or tubing
toward humidifier:
– 2"/ft (15%) when using
steam hose
– 1/2"/ft (5%) when
using 1½" tubing
– 1/4"/ft (2%) when
using 2" tubing
WARNING
Hot surface and steam hazard
Dispersion tube, steam hose, or tubing
can contain steam, and surfaces can
be hot. Discharged steam is not visible.
Contact with hot surfaces or air into
which steam has been discharged can
cause severe personal injury.
mc_060110_1555
Important:
Failure to follow the recommendations in this
section can result in excessive back pressure on
the humidifier. This will result in unacceptable
humidification system performance such as
leaking gaskets, blown water seals, erratic
water level control, and spitting condensate
from dispersion tubes.
mc_060210_0843
mc_062810_0720-VM
Dispersion:
FIGURE 28-1: SINGLE DISPERSION TUBE WITHOUT CONDENSATE DRAIN
29
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
DC-1449
Dispersion:
Single dispersion tube
with condensate drain
Mounting nut
3/8" - 16 (M10)
Vapormist
humidifier
Duct
Secure and seal
escutcheon plates
90° long sweep
or two 45° elbows
Pitch tube toward
drain 1/8"/ft (1%)
1/2" O.D. (DN15) condensate drain tube.
Pitch 1/4”/ft (2%) toward escutcheon plate.
3/4" (DN20) (minimum) condensate drain tube by
installer. Must be suitable for 212 °F (100 °C) water.
1/4" NPT (DN8)
6" (150 mm)
recommended
Water seal
5" (125 mm)
1" (25 mm)
air gap
Steam hose or tubing.
Insulate tubing to reduce
steam loss. Do not insulate
steam hose. See Table
19-1 for maximum piping
lengths.
Pitch*
Open drain required. Locate air gap only in spaces with adequate
temperature and air movement to absorb flash steam; otherwise,
condensation may form on nearby surfaces. Refer to governing codes for
drain pipe size and maximum discharge water temperature.
INSTALLATION
Dashed lines indicate provided by installer.
See the first bullet in
Installation notes.
OM-351-1
Condensate drain
A
Dispersion tube
Dimension A:
• 3.25" (82.5 mm) for 1½" tubes
• 5" (127 mm) for 2" tubes
A
Escutcheon plates
mc_062810_0725-VM
Table 29-1:
Single dispersion tube capacities
Tube size
Insulated
(High-Efficiency Tubes)
Uninsulated
Without drain With drain Without drain With drain
inches DN lbs/hr kg/h lbs/hr kg/h lbs/hr kg/h lbs/hr kg/h
1½ 40 29 13.2 65 29.5 28 12.7 62 28.2
2 50 65 29.5 97 44.1 62 28.2 93 42.3
Notes:
• Single dispersion tube available with face width between 6" (152 mm) up to 120"
(3048 mm) in 1" (25 mm) increments.
• If face width is <19" (483 mm), tube capacity may be reduced. Consult DriSteem or see DriCalc for the correct capacity.
• Hose kits are available that include dispersion tube, 10 ft (3 m) of steam hose, and hardware
* Pitch steam hose or tubing toward humidifier:
– 2"/ft (15%) when using steam hose
– 1/2"/ft (5%) when using 1½" tubing
– 1/4"/ft (2%) when using 2" tubing
A
A
Single dispersion tube
FIGURE 29-1: SINGLE DISPERSION TUBE WITH CONDENSATE DRAIN
30
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Dispersion:
INSTALLATION
Important:
Before marking and drilling holes in the duct
or air handler, refer to ALL pitch requirements
for the Rapid-sorb assembly you received
(see Table 31-1). The size, quantity, and
location of penetrations are determined by the
dimensions and configuration of the Rapid-sorb
assembly you received.
mc_060210_0937
Read all dispersion instructions in this manual, and follow the installation
instructions below:
• Unpack shipment and verify receipt of all Rapid-sorb components
with packing list. Report any shortages to DriSteem immediately. The
components typically include the following:
– Multiple dispersion tubes
– Header
– 3/4" × 2" (19 mm × 51 mm) L-bracket
Note: Dispersion tubes, header, and L-bracket are each tagged with the
customer requested identification number.
– A single duct escutcheon plate the size of the header
– Slip couplings or hose cuffs and clamps
– Accessories such as duct plates, slip couplings, or hose cuffs
– Bolts and washers for mounting the dispersion tubes to the bracket
• L-bracket mounting holes (see note at left):
– L-bracket 50" (1270 mm) long or shorter has a mounting hole 4" (100
mm) from each end for mounting the L-bracket to the duct or air handler
wall.
– L-bracket longer than 50" (1270 mm) has an additional mounting hole
in the center.
Note: Hardware for mounting the L-bracket to the duct or air handler wall
and the hardware for the header support bracket is not provided.
• Select an installation location that provides necessary access in and around
the ductwork or air handler.
• The Rapid-sorb typically is installed centered side to side in a duct, or is
installed across the face of a coil in an air handler.
• The center line of the outer dispersion tubes should never be closer than
4.5" (114 mm) from the side of the ductwork or air handler wall.
• The following instructions are for a typical Rapid-sorb installation —
horizontal-airflow duct with Rapid-sorb header either inside or outside
the duct. See the DriCalc Installation Guides library or contact your
representative/distributor or DriSteem for installation instructions for air
handler or vertical airflow applications.
mc_060210_0945-NA
Important:
Failure to follow the recommendations in this
section can result in excessive back pressure on
the humidifier. This will result in unacceptable
humidification system performance such as
leaking gaskets, blown water seals, erratic
water level control, and spitting condensate
from dispersion tubes.
mc_060210_0843
WARNING
Hot surface and steam hazard
Dispersion tube, steam hose, or tubing
can contain steam, and surfaces can
be hot. Discharged steam is not visible.
Contact with hot surfaces or air into
which steam has been discharged can
cause severe personal injury.
mc_060110_1555
Rapid-sorb
31
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Table 31-1:
Pitch of interconnecting piping, dispersion tubes, and headers for Rapid-sorb evaporative dispersion units
Airflow
Type of
interconnecting piping
Diameter of
interconnecting piping
Pitch of
interconnecting piping
Pitch of
dispersion tubes
Pitch of
header
Horizontal
Steam hose
1½" (DN40)
2" (DN50)
2"/ft (15%)
toward
Rapid-sorb
Vertically
plumb
1/8"/ft (1%)
toward
condensate
drain
Tubing
1½" (DN40)
2" (DN50)
1/8"/ft (1%)
toward
Rapid-sorb
Vertical
Steam hose
1½" (DN40)
2" (DN50)
2"/ft (15%)
toward
Rapid-sorb
2"/ft (15%)
toward
header
1/8"/ft (1%)
toward
condensate
drain
Tubing
1½" (DN40)
2" (DN50)
1/8"/ft (1%)
toward
Rapid-sorb
mc_060310_1000
Dispersion:
INSTALLATION
Table 31-3:
Rapid-sorb header capacities
Header capacity Header diameter
lbs/hr kg/h inches DN
≤ 250 ≤ 113 2 50
251-500 114-227 3 80
501-800 228-363 4 100
801-1300 364-591 5 125
1301-2100 592-955 6 150
mc_060210_0936-
Pitch requirements
• For Rapid-sorb with the header outside a horizontal-airflow duct, consider the following:
– 1½" (DN40) dispersion tubes: Use a fastener of sufficient length to accommodate the 1/8"/ft (1%) pitch
requirements toward the 3/4" pipe thread (DN20) header drain fitting.
– 2" (DN50) dispersion tubes: The bracket can be mounted flush to the ductwork. The 1/8"/ft (1%) pitch typically
can be accomplished in the length of the hose cuffs used to connect the tubes to the header.
• See Table 31-1 and the drawings on the following pages for pitch requirements.
mc_060210_0953-NA
Table 31-2:
Rapid-sorb tube capacities*
Tube
diameter
Tube capacity
Insulated
(High-Efficiency Tubes)
Uninsulated
inches DN lbs/hr kg/h lbs/hr kg/h
1½ 40 43.0 19.5 40.0 18.2
2 50 80.0 36.4 77.0 35.0
* Capacities shown are for horizontal airflow.
See DriCalc for vertical airflow capacities. If face height is <22" (559
mm), tube quantity per panel may need to increase to compensate for
reduced capacity of short tubes. Consult DriSteem or see DriCalc for
the correct calculation.
mc_060210_0935
Rapid-sorb
32
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Rapid-sorb
L-bracket
Vapormist
humidifier
Duct
Secure and seal escutcheon plates
90° long sweep or
two 45° elbows
See
Note 2
DC-1448
3/4" pipe thread (DN20) copper
6" (150 mm) recommended
Header pitch: 1/8"
/ft (1%) minimum
1" (25 mm) air gap
5" (125 mm)
recommended
Condensate drain 3/4" pipe
thread (DN20) copper
Support bracket that has
0.421" (11 mm) mounting
holes at top, bottom and end
Airflow
Position L-bracket so that flange is upstream of dispersion tubes.
Drawing shows L-bracket positioned for airflow back to front.
Dispersion tube
Point tubelets perpendicular to airflow
Slip coupling or hose cuff
Pitch
(see Note 1)
Notes:
1 Pitch steam hose or tubing toward Rapid-sorb:
– 2"/ft (15%) when using steam hose
– 1/8"/ft (1%) when using tubing
2 Use a hose clamp to connect steam outlet to steam hose.
Use a hose cuff and clamps to connect steam outlet to tubing.
Open drain required:
Locate air gap only in spaces with
adequate temperature and air
movement to absorb flash steam;
otherwise, condensation may form
on nearby surfaces. Refer
to governing codes for drain pipe
size and maximum discharge
water temperature.
Steam hose or tubing.
Insulate tubing to
reduce steam loss.
Do not insulate steam
hose. See Table
19-1 for maximum
piping lengths.
OM-351-1
A
Dimension A:
• 3.25" (82.5 mm) for 1½" tubes
• 5" (127 mm) for 2" tubes
A
INSTALLATION
Dispersion tube escutcheon plates
Dashed lines indicate provided by installer.
mc_062810_0815-VM
Dispersion:
FIGURE 32-1: RAPID-SORB IN A HORIZONTAL AIRFLOW WITH HEADER OUTSIDE THE DUCT
HEADER OUTSIDE OF DUCT, HORIZONTAL AIRFLOW
1. Mark and cut holes in the ductwork for the dispersion tubes. Use the L-bracket as a template to mark the holes on
the duct floor.
2. Temporarily, loosely suspend or support the header below the final location. Vertical balance point of the dispersion
tube length dictates where the header should be suspended or temporarily supported.
3. Mount the dispersion tubes to the header with the slip coupling or hose cuff (provided).
• When installing slip couplings for 1½" (DN40) dispersion tubes, take care not to shear the O-rings.
• Set the slip coupling on the header stub or dispersion tube so the O-ring is resting on the face of the tubing.
• Rotate the slip coupling as you push it onto the tubing.
• The O-rings are lubricated at the factory. If additional lubrication is necessary, DO NOT use a petroleum-based
lubricant.
33
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Dispersion:
Note:
See Page 36 for steam supply and
condensate drain line connection instructions.
INSTALLATION
Rapid-sorb
4. Position the flange of the L-bracket so it is upstream of the tubes when
the assembly is raised and fastened into position. Fasten the L-bracket
to the end of the dispersion tubes with the provided bolt, lock washer,
and flat washer.
5. Before tightening the L-bracket bolts to the dispersion tubes:
• For 1½" (DN40) dispersion tubes:
– Dispersion tube will rotate in slip coupling. Verify that dispersion tube
orifices are directed perpendicular to airflow.
– Dispersion tube and slip coupling must be fully engaged on header
stub for O-rings to provide a seal.
• For 2" (DN50) dispersion tubes:
Before securing hose cuff in place with hose clamps on dispersion tube
and the header stub, verify that dispersion tube orifices are directed
perpendicular to airflow.
6. Slide the assembly up until the L-bracket aligns with the mounting holes in
the duct.
• For 1½" (DN40) dispersion tubes:
– Header pitch is duplicated in the L-bracket.
– Dispersion tube and slip coupling must be fully engaged on header
stub for O-rings to provide a seal.
– High end of L-bracket can be fastened tight to duct or air handler.
– Fastener on low end of L-bracket must be long enough to compensate
for pitch. Use a nut on both sides of L-bracket and duct or air handler
for stability.
• For 2" (DN50) dispersion tubes:
– Fasten bracket to top of duct and use hose cuffs to compensate for
header pitch.
– Before securing hose cuffs with hose clamps on dispersion tube and
header stub, verify that header pitch, 1/8"/ft (1%) toward drain, is
maintained.
7. Permanently secure both ends of header, and verify that header pitch,
1/8"/ft (1%) toward drain, is maintained.
8. Verify that all fasteners are secure:
• L-bracket to duct
• Dispersion tubes to L-bracket
• Hose clamps on 2" (DN50) tubes
9. Secure and seal the dispersion tube escutcheon plate and condensate
drain tube escutcheon plate around the respective tubes, if applicable.
mc_060210_1015-NA
34
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Rapid-sorb
OM-7399
6" (152 mm)
Point tubelets (steam orifices) perpendicular to airflow
Duct
Vapormist
humidifier
Airflow
Dispersion tube
Slip coupling or hose cuff
90° long sweep or
two 45° elbows
Support bracket
5" (127 mm)
3/4" pipe thread
(DN20) drain
3/4" (DN20) copper
1" (25 mm) air gap
Open drain required:
Locate air gap only in spaces with adequate temperature
and air movement to absorb flash steam, or condensing on
nearby surfaces may occur. Refer to governing codes for
drain pipe size and maximum discharge water temperature.
Position L-bracket so that flange is upstream of dispersion tubes. This
drawing shows the L-bracket positioned for airflow back to front
Pitch header toward
drain 1/8"/ft (1%)
Secure and seal
escutcheon plate
Pitch*
* Pitch steam hose or tubing toward Rapid-sorb:
– 2"/ft (15%) when using steam hose
– 1/8"/ft (1%) when using tubing
INSTALLATION
WARNING
Hot surface and steam hazard
Dispersion tube, steam hose, or tubing
can contain steam, and surfaces can
be hot. Discharged steam is not visible.
Contact with hot surfaces or air into
which steam has been discharged can
cause severe personal injury.
mc_060110_1555
HEADER INSIDE OF DUCT, HORIZONTAL AIRFLOW
1. Mark and cut holes in ductwork or air handler for steam header
penetration, condensate drain piping, and header support bracket fastener.
Allow 1/8"/ft (1%) header pitch toward the support bracket when you drill
the hole for the header support bracket fastener.
2. Loosely fasten the header in place.
3. Rotate the header 90° so the header stubs point horizontally in the duct.
4. When installing in an air handler, the rotation of the header is often less
than 90°. Typically, due to the condensate drain piping requirements, the
header can be set on the floor of the air handler, assembled in the vertical
position, and then raised and mounted in place.
Steam hose or tubing. Insulate
tubing to reduce steam loss. Do
not insulate steam hose. See
Table 19-1 for maximum
piping lengths.
Dashed lines indicate provided by installer.
mc_062810_0820-VM
Dispersion:
FIGURE 34-1: RAPID-SORB IN A HORIZONTAL AIRFLOW WITH HEADER INSIDE THE DUCT
35
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Dispersion:
INSTALLATION
Note:
See Page 36 for steam supply and condensate
drain line connection instructions.
5. Mount the dispersion tubes on the header with the slip couplings or hose
cuffs:
• When installing slip couplings for 1½" (DN40) dispersion tubes, take
care not to shear O-rings.
• Set slip coupling on header stub or dispersion tube so O-ring is resting
on face of tubing.
• Rotate slip coupling while pushing it onto the tubing.
• O-rings are lubricated at factory. If additional lubrication is necessary,
DO NOT use petroleum-based lubricant.
6. Allow the dispersion tubes to rest against the bottom of the duct.
7. Position the flange of the L-bracket so it is upstream of the tubes when the
assembly is rotated into position. Fasten the L-bracket to the end of the
dispersion tubes with the provided bolt, lock washer, and flat washer.
8. Rotate the assembly up until the L-bracket aligns with the mounting holes in
the duct or air handler.
• For 1½" (DN40) dispersion tubes:
– Header pitch is duplicated in the L-bracket.
– Dispersion tube and slip coupling must be fully engaged on header
stub for O-rings to provide a seal.
– High end of L-bracket can be fastened tight to duct or air handler.
– Fastener on low end of L-bracket must be long enough to compensate
for pitch. Use a nut on both sides of L-bracket and duct or air handler
for stability.
• 2" (DN50) dispersion tubes
– Fasten bracket to top of duct and use hose cuffs to compensate for
header pitch.
– Before securing hose cuffs with hose clamps on dispersion tube
and header stub, verify that dispersion tube orifices are directed
perpendicular to airflow.
9. Verify that all fasteners are secure:
• L-bracket to duct
• Dispersion tubes to L-bracket
• Hose clamps on 2" (DN50) tubes
• Header support bracket fastener
10. Secure and seal the header escutcheon plate around the header.
mc_060210_1050 -NA
Rapid-sorb
36
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Dispersion:
STEAM SUPPLY CONNECTIONS TO RAPID-SORB HEADER
Connect the steam supply interconnecting piping from the humidifier to the
Rapid-sorb. The steam supply piping requires a minimum of 1/8"/ft (1%) pitch
toward the header.
If multiple humidifiers are supplying one Rapid-sorb, a multiple steam supply
connector is needed. Typically, the multiple steam supply connector attaches to
the Rapid-sorb header supply end with hose cuff and clamps:
1. Route the necessary number of steam supplies from the humidifiers to the
steam supply connector.
2. Position the steam supply connector to accept the steam supplies while
maintaining the necessary pitch.
3. Make sure the hose clamps on the steam supply connector and header are
tight.
CONDENSATE DRAIN CONNECTIONS TO RAPID-SORB HEADER
Piping must be minimum 3/4" I.D. (DN20) and rated for 212 °F (100 °C)
minimum continuous operating temperature.
The condensate drain line must be piped as shown in Figures 32-1 and 34-1.
Provide a 6" (152 mm) drop prior to a 5" (127 mm) water seal to:
• Ensure drainage of condensate from the header
• Keep steam from blowing out of the drain line
After the water seal, run the drain line to an open drain with a 1" (25 mm)
vertical air gap.
• Cut the drain line at a 45° angle on the end above the drain to permit
a direct stream of water into the drain pipe while maintaining a 1"
(25 mm) air gap.
• Locate air gap only in spaces with adequate temperature and air
movement to absorb flash steam, or condensing on nearby surfaces may
occur.
All drain lines must be installed and sized according to governing codes.
ULTRA-SORB
For Ultra-sorb steam dispersion panel instructions, see the installation,
operation, and maintenance manual shipped with the Ultra-sorb.
mc_060210_1300-NA
INSTALLATION
CAUTION
Operate Rapid-sorb within rated steam
capacity
Excessive steam flow to the Rapid-
sorb steam dispersion assembly can
cause condensate to exit the tubelets,
which can cause water damage and
standing water in the duct or air
handler.
To avoid condensate exiting the
tubelets, do not operate the Rapid-sorb
beyond its rated capacity.
mc_072010_0930
Rapid-sorb
Ultra-sorb
37
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OPERATION
Principle of operation
1. When the system is first activated, the fill valve opens and the evaporating chamber fills with water to the operating
level.
2. On a call for humidity, the heating elements are energized, causing the water to boil. The fill valve opens and
closes as needed to maintain the operating water level.
3. During refill in tap/softened water systems, a portion of the surface water is skimmed off, carrying away
precipitated minerals.
4. RO/DI water systems (systems using deionized water or water that has been treated using reverse osmosis) do not
require skimming.
5. Steam created in the evaporating chamber flows through vapor hose or piping to the dispersion assembly, where it
is discharged into the airstream.
mc_022112_0953
Tap/softened water Vapormist (shown with cover removed)
OM-2000a
2
3
4
1
mc_022112_0952
FIGURE 37-1: VAPORMIST PRINCIPLE OF OPERATION
38
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OPERATION
If an item in the Start-up checklist below does not apply to your system, skip to
the next item and continue the process.
☐ Read this manual and all other information that was provided with your
humidifier.
☐ Verify that all field wiring is done according to the instructions in this
manual and in the humidifier wiring diagram.
☐ Confirm that the input signal is consistent with the Vapor-logic controller's
expected input signal. Input signals are listed in the Vapor-logic Setup
menu. See “Installation Step 2: Setup” in the Vapor-logic version 5
Installation and Operation Manual.
☐ Confirm that proper grounding and an approved earth ground are
provided.
☐ Turn on the water supply, and confirm that the drain valve is closed.
☐ Turn on power to the humidifier, and confirm the Main menu is displayed
on the keypad/display. The display may take several seconds to appear as
the controller powers up.
☐ Confirm in the Main Menu that the mode is “Auto” and that tank status is
“Filling.”
☐ When “Filling” appears in main menu, confirm that the tank is filling with
water.
☐ In the Status screen, confirm that the Duct Airflow Switch is closed.
☐ In the Status screen, confirm that the high limit humidistat input is closed or
the high limit transmitter is connected.
☐ Make sure the tank has filled with water. See the “Damage from dry
startup” Caution on Page 39.
☐ With sufficient water in the tank, the airflow switch closed, the high limit
closed, and the humidifier getting a call for humidity, verify that the heater
outputs are activated.
☐ Check the amp draw of the heaters. Refer to the humidifier wiring diagram
for the proper rating.
☐ If you experience difficulties, have the keypad/display information
available along with the serial number and humidifier Model, and call
DriSteem Technical Support at 800-328-4447.
mc_060210_1355-VM
Start-up checklist
39
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
After the system is installed and connected properly:
1. Verify that the humidifier, controls, piping, electrical connections, steam
supply, and dispersion units(s) are installed according to the following:
• Installation instructions in this manual
• Vapor-logic version 5 Installation and Operation Manual
– Installation section
– Pre-installation checklist
• Ladder style wiring diagram (inside humidifier electrical panel cover)
• External connections wiring diagram (inside humidifier electrical panel
cover)
• All governing codes
2. Verify that all electrical connections are secure before applying power.
3. Make sure all electrical covers are in place and secure. See Warning at
right.
4. Verify that the humidifier is mounted level and securely supported before
filling with water. See operating weights in Table 4-1.
5. Verify that the humidifier is level front to back and side to side after it is full
of water.
6. Read the “Operation” section of the Vapor-logic version 5 Installation and
Operation Manual.
Note: During start-up, do not leave the humidifier unattended.
7. Perform all applicable “Start-up checklist” items. See Page 38.
8. Monitor humidifier operation through multiple fill cycles. The humidifier
operating status appears on the keypad/display.
9. On tap/softened water units, water skims from the humidifier after every fill
cycle. Adjust the amount of skim by increasing or decreasing the skim time
(see the Vapor-logic version 5 Installation and Operation Manual).
At start-up, DriSteem recommends initially running the humidifier with the
factory default setting for skim time. See “Maintenance," beginning on
Page 40.
mc_060210_1400
CAUTION
Damage from dry startup
In the event the humidifier tank does
not contain water and the heaters
are energized, turn main power off.
Operation of the heaters without water
will cause damage to the humidifier.
Before turning main power on, verify
that all wiring has been completed per
the wiring instructions in this manual
and the unit wiring diagrams.
mc_052410_1325
The Vapor-logic version 5 Installation and
Operation Manual is a comprehensive
operation manual. Refer to it for information
regarding the following features:
• Keypad/display setup and menu
information
• Control input signals and functions
• Drain, flush, and skim features
• Safety features
• Alarm screens and fault messages
The manual was shipped with your
humidifier and is available at our Web site:
www.dristeem.com
mc_052410_1340
WARNING
Electric shock hazard
Only qualified electrical personnel
should perform start-up procedure.
Contact with energized circuits can
cause property damage, severe
personal injury or death as a result of
electrical shock or fire.
Make sure that all electrical covers
are in place and secure before turning
on electrical power. These include the
heater terminal cover, electrical panel
cover, and subpanel access panels.
Start-up procedure
OPERATION
40
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Tap/softened water
MAINTENANCE
WARNING
Hot surface and hot water hazard
Do not touch the tank or drain piping
until the unit has had sufficient time to
cool, or serious injury can occur.
Opening the drain valve when the
tank is hot can discharge water with a
temperature up to 212 °F (100 °C) into
the plumbing system. This can cause
damage to the plumbing system if the
humidifier is not properly connected
to a water tempering device such as a
DriSteem Drane-kooler™.
mc_060110_1640
WARNING
Electric shock hazard
Contact with energized circuits can
cause severe personal injury or
death as a result of electric shock. To
prevent shock, disconnect electrical
power before performing service or
maintenance procedures on an part of
the humidification system.
When performing maintenance on the
humidifier:
• Always switch the keypad control
mode to Standby.
• Place all power disconnects in OFF
position and lock in OFF position.
• Close the field-installed manual
supply water shut-off valve.
mc_031110_0444
The best way to determine how often your humidifier needs maintenance is to
remove the tank cover and inspect it for mineral deposits after three months
of duty. Hours of operation and duty cycle will determine your maintenance
schedule, as will water quality.
WATER QUALITY AND MAINTENANCE
Maintenance requirements vary with water quality, because tap and softened
water carry a variety of minerals and other materials in a mix that varies from
location to location. Very hard (high mineral content) water requires more
frequent cleaning and drain/flush cycles than water with low mineral content.
Softened water significantly reduces mineral accumulation inside the humidifier.
Note: Solids, like silica, are not removed in the softening process.
SKIM DURATION
Skim duration determines the quantity of water skimmed with each fill cycle
and is field adjustable using the Vapor-logic keypad/display.
Skimming reduces the need for frequent humidifier cleaning. Each time the
tank refills, it fills to a level just above the lip of the skim/overflow fitting. A
portion of the fill water flows out of the skim/overflow fitting to the drain, which
flushes minerals left by the previous evaporating cycle and skims away surface
residue.
Both humidifier cleaning and heated water flowing to the drain are operational
costs. DriSteem recommends that the user observe and adjust the skim duration
to achieve a balance between reducing mineral buildup and conserving
heated water.
mc_060210_1430
41
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OM-778-3
MAINTENANCE
Humidifier De-scaling Solution
Scale buildup on humidifier heaters acts as
an insulator, reducing humidifier performance
while increasing energy costs. To keep
humidifiers operating as efficiently as possible,
remove scale with DriSteem's Humidifier De-
scaling Solution, available for purchase from
your DriSteem representative or distributor.
The De-scaling Solution cleans without risk
of corroding humidifier tanks or welds. The
De-scaling Solution also cleans surfaces
unreachable by hand scraping.
DriSteem's Humidifier De-scaling Solution is the
only approved cleaner/de-scaler for use with
DriSteem humidifiers. Use of other cleaners/de-
scalers may void your DriSteem warranty.
mc_021908_1410
COOL DOWN HUMIDIFIER
Before performing any maintenance, allow the tank to cool down. Fresh make-
up water is used to speed up cooling. Do not close the manual water supply
before cooling down the humidifier; otherwise the tank could stay hot for
several hours.
• Insulated and uninsulated tanks will have hot surfaces.
• Verify that there is no call for humidity and that the aquastat set point
(adjusted using the keypad/display Setup screens) is less than room
temperature (default setting is 40 °F [4 °C]) so that the heaters do not
energize while cooling down the tank.
• Models with a standard drain valve:
– Manually open the drain valve by moving the valve lever located on
the back of the drain valve to the manual open position. The fill valve
eventually opens.
– Let the fill water run until the tank is cooled, then shut off the field-
installed manual supply water shut-off valve.
– Let the tank drain, then manually close the drain valve.
• Models with optional drain valves:
– For drain valves without the manual open lever, use the keypad to
perform the cool down process.
– Go to the control modes screen and select Manual Drain.
– Allow approximately half the water to drain out of the tank.
– In the Control Modes screen select Auto; the fill valve opens and the
humidifier cools down.
– When the fill valve closes, select Manual Drain in the Control Modes
screen and let the tank drain dry. The humidifier should be cool enough
to work on.
– For more information about using the keypad, see the Vapor-logic
version 5 Installation and Operation Manual.
mc_060210_1715
Tap/softened water
FIGURE 41-1: COVER ENCLOSURE
SCREW CAP DETAIL
INSPECTION AND MAINTENANCE
1. Annually (also recommended when maintenance is performed)
• Inspect tank and gaskets for leaks.
• Measure current draw of heaters and verify amp values per stage by
comparing to the wiring diagram located inside the subpanel cover. This
identifies any burned out heaters. Only qualified electrical personnel
should perform this task.
• All safety devices in the control circuit should be cycled on and off to
verify they are functioning. These include:
– High limit switch
– Airflow proving switch
– Low water level probe. Pull out probe plug; fill valve should energize.
42
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
2. Seasonally (or as required, depending on water quality)
• Remove the evaporating chamber:
– Remove the two fasteners on each side of the cover enclosure (see
Figure 41-1).
– Remove the enclosure. See “Electric shock hazard” Warning at right.
Note: If the humidifier has an SDU mounted directly above it, remove
the SDU cover before removing the humidifier cover.
– If the tank is hot, cool it down first. See “Cool down humidifier” on
Page 41.
– Shut off the water supply.
– Allow the tank to drain completely.
– Shut off the electrical supply.
– Disconnect the fill line at the supply side of the fill valve.
– Disconnect the electrical plugs between the tank components and
the back of the electrical panel (includes: power plug, fill plug, drain
plug, water level control plug, tank temperature sensor plug, and
thermal trip plug).
Important: Disconnect by pulling on plug housing. Do not disconnect
by pulling on cord or wires.
– Disconnect the drain union on the back left corner of the frame.
– Disconnect the steam supply hose from the top of the tank.
– Lift the tank foot above the frame flange, and slide the tank assembly
forward to remove.
• Loosen the four cover bolts and remove the cover assembly from the
tank.
• Clean the tank interior using a putty knife or similar flat instrument.
• Clean and inspect probe rod assembly:
– Unplug the probe plug assembly, and leave ground wire connected
to tank.
– Unscrew probe rod assembly using the probe tool (see Figure 42-1),
and clean plastic probe housing, ensuring that all passageways for
water flow are clear.
– Clean probe rods using steel wool or similar mild abrasive material.
– Inspect composite plastic probe housing. If any signs of cracking,
roughness, or deterioration, replace assembly.
– When sliding probe housing into bracket from which it hangs, orient
housing so neither water flow slot directly faces tank wall at back
end of bracket.
mc_061610_1500
MAINTENANCE
Tap/softened water
Remove and install probe assembly with
supplied probe tool. Attach a 3/8" square
drive to the probe tool.
When installing, torque probe assembly to 120
in-lbs (10 ft-lbs; 13.6 N-m). Probe tools can be
ordered from your DriSteem representative (Part
No. 185101).
Probe tool
OM-7395X
mc_060310_0735-NA
WARNING
Electric shock hazard
Do not remove humidifier electrical
panel cover, heater terminal cover, or
subpanel access panels until electrical
power is disconnected. Improper wiring
or contact with energized circuits
can cause property damage, severe
personal injury, or death as a result of
electric shock and/or fire.
Only qualified electrical personnel
should perform maintenance
procedures.
mc_060310_0840
FIGURE 42-1: PROBE TOOL
43
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
• Install the probe and probe plug assembly. Verify ground wire is solidly
connected to tank.
• Secure the chamber cover, making sure the cover gasket is seated and
the chamber is sealed.
• Re-install evaporating chamber:
– Reconnect the fill line.
– Reconnect electrical plugs (the plugs are color coded).
– Reconnect the drain union.
– Reconnect the steam hose.
• Verify electrical connections:
– Verify that all DIN rail-mounted components are securely fastened to
DIN rail.
– Verify that all power terminal screws and lugs are tight from power
block to heaters.
– Verify that all plugs under the humidifier cover are completely
plugged in.
• Move the drain valve lever back to the auto position.
• Turn on the water supply.
• Turn on the electrical power.
3. Off-season maintenance
• Perform complete inspection and cleaning of the following:
– Heaters
– Probe rods
– Skimmer port and water seal
– Humidifier tank
• After cleaning, the humidifier should remain empty until humidification is
required.
OFF-SEASON SHUT-DOWN PROCEDURE
1. Switch off electrical power.
2. Remove the enclosure.
3. Shut off the water supply to the makeup valve.
4. Drain the evaporating chamber, and clean if necessary following the
instructions in this manual.
5. Replace the enclosure.
6. Leave the evaporating chamber dry, the power off, and the water shut-off
valve closed until the next humidification season.
MAINTENANCE
Tap/softened water
44
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
RO/DI water option
MAINTENANCE
RO/DI humidifiers use RO/DI water. Because these water types are mineral
free, cleaning the evaporating chamber should not be necessary. However,
there are some maintenance steps that should be followed to ensure all parts of
the unit are in working order.
Important: Verify regularly that water processing equipment is operating
correctly. The presence of chlorides in improperly processed deionized
water will eventually cause pitting and failure of the humidifier tank and its
components. Damage caused by chloride corrosion is not covered by your
DriSteem warranty.
COOL DOWN HUMIDIFIER
If the tank is hot, cool it down by opening the manual ball valve on the side of
the tank. The float valve will open allowing cool water to run into the tank until
it is cool enough to handle. Then shut off the water supply, and allow the tank
to drain completely.
INSPECTION AND MAINTENANCE
1. Remove the evaporating chamber:
• Remove the two fasteners on each side of the cover enclosure. See
Figure 41-1.
• Remove the enclosure. See “Electric shock hazard” Warning at left.
Note: If the humidifier has an SDU mounted directly above it, remove the
SDU cover before removing the humidifier cover.
• If the tank is hot, follow the instructions in “Cool down humidifier” above
before proceeding.
• Shut off the water supply.
• Allow the tank to drain completely.
• Shut off the electrical supply.
• Disconnect the fill line at the fill fitting.
• Disconnect the electrical plugs between the tank components and the
back of the electrical panel (includes: power plug, low water switch
plug, tank temperature sensor plug and thermal trip plug).
Important: Disconnect by pulling on plug housing. Do not disconnect
by pulling on cord or wires.
• Disconnect the drain union on the back left corner of the frame.
• Disconnect the steam supply hose from the top of the tank.
• Lift the tank foot above the frame flange and slide the tank assembly
forward to remove.
WARNING
Hot surface and hot water hazard
Do not touch the tank or drain piping
until the unit has had sufficient time to
cool, or serious injury can occur.
Opening the drain valve when the
tank is hot can discharge water with a
temperature up to 212 °F (100 °C) into
the plumbing system. This can cause
damage to the plumbing system if the
humidifier is not properly connected
to a water tempering device such as a
DriSteem Drane-kooler™.
mc_060110_1640
WARNING
Electric shock hazard
Do not remove humidifier electrical
panel cover, heater terminal cover, or
subpanel access panels until electrical
power is disconnected. Improper wiring
or contact with energized circuits
can cause property damage, severe
personal injury, or death as a result of
electric shock and/or fire.
Only qualified electrical personnel
should perform maintenance
procedures.
mc_060310_0840
45
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
2. Loosen the four cover bolts and remove the cover assembly from the tank.
3. Inspect the tank interior for debris or pitting.
4. Inspect the valve inlet for debris.
5. Check the operation of the float valve and the condition of the float seat.
6. Check the low water switch to make sure the float slides freely on the stem.
7. Secure the chamber cover making sure the cover gasket is seated and the
chamber is sealed.
8. Reinstall the evaporating chamber.
• Reconnect the fill line.
• Reconnect electrical plugs (the plugs are color coded).
• Reconnect drain union.
• Reconnect steam hose.
9. Verify electrical connections:
• Verify that all DIN rail-mounted components are securely fastened to DIN
rail.
• Verify that all power terminal screws and lugs are tight from power block
to heaters.
• Verify that all plugs under the humidifier cover are completely plugged
in.
10. Close the drain valve.
11. Turn on the water supply.
12. Turn on the electrical power.
OFF-SEASON SHUT-DOWN PROCEDURE
1. Switch off electric power.
2. Remove the enclosure.
3. Shut off the water supply to the makeup valve.
4. Drain the evaporating chamber by opening the drain valve. For units with
an end-of-season drain, refer to the Vapor-logic version 5 Installation and
Operation Manual.
5. Replace the enclosure.
6. Leave the evaporating chamber dry, the power off, and the water shut-off
valve closed until the next humidification season.
mc_061610_1520
MAINTENANCE
RO/DI water option
WARNING
Electric shock hazard
Contact with energized circuits can
cause severe personal injury or
death as a result of electric shock. To
prevent shock, disconnect electrical
power before performing service or
maintenance procedures on an part of
the humidification system.
When performing maintenance on the
humidifier:
• Always switch the keypad control
mode to Standby.
• Place all power disconnects in OFF
position and lock in OFF position.
• Close the field-installed manual
supply water shut-off valve.
mc_031110_0444
46
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Humidifier
OM-768d
Tap/softened water Vapormist
RO/DI water Vapormist
REPLACEMENT PARTS
FIGURE 46-1: VAPORMIST HUMIDIFIER REPLACEMENT PARTS
47
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Humidifier
REPLACEMENT PARTS
Table 47-1:
Vapormist humidifier replacements parts
No. Description Qty. Part No. No. Description Qty. Part No.
1 Head bolt, large Phillips, ¼ - 20 × 1" 4 700300-013 19 Washer, No. 8 external tooth, pltd 2 700200-003
2 Thermo cut-out 1 409560-001 20 Nut, 8-32 hex, pltd 6 700200-002
3 Cover, heater terminal 1 * 21 Cover, humidifier electrical panel 1 120277
4 Hose clamp, 2" 2 700560-200
22
Fill adapter, VM-2 through VM-4 1 160226-041
5
Hose cuff, 1½" 1 305390- * Fill adapter, VM-6 through VM-16 1 160224-041
Hose cuff, 2" 1 305391- * Fill adapter, VM-21 through VM-34 1 160224-052
6 Cover, tank 1 * 23 Insulation, panel 1 309845-003
7 Heater element * * 24 Sensor, temperature 1 197000-025
8 Probe assembly with cord and plug 1 406050-100 25 Screw, Phillips head, 8-32 × ½" 8 700170-007
9 Gasket, 2.50" OD × 1.90" ID 1 309750-004 26 Frame assembly, chassis 1 165541
10 Probe assembly 1 406303- * 27 Clip, wire harness 1 405892-001
11
Valve, ¾" electric, 24V 1 505400-001 28 Clip, temperature sensor 1 408251
Valve, ½" SST ball 1 505000-003 29 Valve assembly, float 1 505310
Drain, ¼" NPT E.O.S., 24V solenoid SST w/
DIN plug (not shown)
1 505086-003 30 Switch, float, 1/8" NPT 1 408420-002
12 Tank weldment 1 * 31 Ring, seal, ¼"-18 NPT 1 306365
13 Fill valve 1 197000-010 32 Gasket, bulkhead, 1.60 OD × 1.15 ID 1 309750-005
14 Cabinet enclosure 1 330001-001 33 Probe housing, nylon 1 308500
15 Hose, ¾" ID 2 307020-002 34 Nut, heater .475 1 409601-001
16 Hose clamp, ¾" 4 700560-075 35 O-ring, 5/8" EPDM No. 016 1 300400-009
17
Nut assembly, ¼-20, VM-2 through VM-4 4 700650
37
DI orifice, VM-2 through VM-16 1 160229-041
Nut assembly, ¼-20, VM-6 through VM-34 2 700650 DI orifice, VM-21 through VM-34 1 160229-052
18
Cover, tank gasket, VM-2 through VM-4 1 160695-001 38 Bulkhead nut 1 162721-002
Cover, tank gasket, VM-6 through VM-34 1 160695-002
39
Tube weld, low water, short,
VM-2 through VM-4
1 167787
Tube weld, low water, long,
VM-6 through VM-34
1 167788
40 Sediment strainer 1 300050
* Specify humidifier model and serial numbers when ordering.
48
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
SDU-E
OM-1503
Table 48-1:
SDU-E replacement parts
No. Description Qty. Part No.
1 Shroud 1 330002-001
2 Blower, SDU external assembly 1 *
3 Switch, airflow 1 406190
4 Screw, 8-32 × ½" Phillips, black 4 700170-007
5 Nut retainer, 8-32 4 409593-001
6
Dispersion chamber for SDU with 1½" outlet 1 160445-003
Dispersion chamber for SDU with 2" outlet 1 160445-004
* This is an assembly of multiple parts.
mc_062810_1112
REPLACEMENT PARTS
mc_062810_1110
FIGURE 48-1: SDU-E REPLACEMENT PARTS
49
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
SDU-I
OM-1504
Table 49-1:
SDU-I replacement parts
No. Description Qty. Part No.
1 Shroud 1 330001-002
2 Blower, SDU external assembly 1 *
3 Switch, airflow 1 406190
4 Screw, 8-32 × ½" Phillips, black 6 700170-007
5 Nut retainer, 8-32 6 409593-001
6 Tubelet, 0.375" × 0.375" molded 44 310280-006
* This is an assembly of multiple parts.
mc_062810_1113
REPLACEMENT PARTS
mc_062810_1111
FIGURE 49-1: SDU-I REPLACEMENT PARTS
50
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OM-213-4b
Subpanel
Table 50-1:
Vapormist subpanel with SSR
No. Description Qty. Part No. No. Description Qty. Part No.
1 Subpanel, barrier 1 120801 9
Board, Vapor-logic main
microprocessor
1 408496-006
2 DIN rail, 11" long 1 167765-011 10 Board, Vapor-logic keypad/display 1 408495-002
3 Lug wire 2 409250-003 11 Plug, 4-prong female 4 409585-008
4 Ground lug, medium 2 409250-027 12 Terminal block, 3-pole 1 408300-002
5 Block, DIN rail terminal end 3 408252-006 13 Fan, cooling 1 408677-001
6
Transformer 120/208/240/480 V 1 408965-001 14 Housing, 75 Amp white connector 4 409585-001
Transformer 600 V 1 408986 15 Plate, plug retainer 2 409585-009
7
Wire channel, 1" × 1" 12.5" 408999-001
16
SSR, 50 Amp, 1-pole * 408679-001
Wire channel cover 12.5" 408999-002 SSR, 50 Amp, 2-pole * 408679-003
8 Contactor 1 407010-* 17 Circuit breaker * 406775- *
* Refer to model for correct selection and quantity.
REPLACEMENT PARTS
FIGURE 50-1: VAPORMIST SUBPANEL WITH SSR
51
VAPORMIST INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
OM-1506b
Table 51-1:
Vapormist subpanel with SDU
No. Description Qty. Part No.
1 Subpanel, barrier 1 120801
2 DIN rail, 11" long 1 167765-011
3 Lug wire 2 409250-003
4 Ground lug, medium 2 409250-027
5 Block, DIN rail terminal end 2 408252-006
6
Transformer 120/208/240/480 V 1 408965-001
Transformer 600 V 1 408986
7
Transformer, 240/480 V, 300 VA 1 408991
Transformer, 230/460/575 V, 300VA 1 408992
Transformer, 480 V, 500 VA 1 408996-008
Transformer, 600 V, 500 VA 1 408996-009
8 Plug, 4-prong female 4 409585-008
9
Terminal block, 3-pole 1 408300-002
Terminal block, 4-pole 1 408300-003
10 Fan, cooling 1 408677-001
11 Housing, 75 Amp white connector 4 409585-001
12 Plate, plug retainer 2 409585-009
13 Board, Vapor-logic main microprocessor 1 183504-015
14 Board, Vapor-logic keypad/display 1 408495-002
15 Terminal, DIN rail mount 9 408252-001
16 Terminal, ground 1 408252-010
17 End cap, DIN rail mount 2 408252-005
18 Jumper, marathon terminal 2 408252-009
19 Relay, 24V DPDT finder * 407900-016
20 Relay socket * 407900-019
21 Circuit breaker * 406775- *
22
Contactor, 55 A 1 407010-002
Contactor, 35 A 1 407010-001
23
Channel, wire cover 6" 408999-002
Channel, wire 6" 408999-001
24
Channel, wire cover 12.5" 408999-002
Channel, wire 12.5" 408999-001
* Refer to model for correct selection and quantity.
Subpanel
REPLACEMENT PARTS
FIGURE 51-1: VAPORMIST SUBPANEL WITH SDU
Form No. VM-IOM-EN-0517
Part No. 890000-201 Rev L
Two-year Limited Warranty
DriSteem Corporation (“DriSteem”) warrants to the original user that its products will be free from
defects in materials and workmanship for a period of two (2) years after installation or twenty-
seven (27) months from the date DriSteem ships such product, whichever date is the earlier.
If any DriSteem product is found to be defective in material or workmanship during the applicable
warranty period, DriSteem’s entire liability, and the purchaser’s sole and exclusive remedy, shall
be the repair or replacement of the defective product, or the refund of the purchase price, at
DriSteem’s election. DriSteem shall not be liable for any costs or expenses, whether direct or
indirect, associated with the installation, removal or reinstallation of any defective product. The
Limited Warranty does not include cylinder replacement for electrode steam humidifiers.
DriSteem’s Limited Warranty shall not be effective or actionable unless there is compliance with
all installation and operating instructions furnished by DriSteem, or if the products have been
modified or altered without the written consent of DriSteem, or if such products have been subject
to accident, misuse, mishandling, tampering, negligence or improper maintenance. Any warranty
claim must be submitted to DriSteem in writing within the stated warranty period. Defective parts
may be required to be returned to DriSteem.
DriSteem’s Limited Warranty is made in lieu of, and DriSteem disclaims all other warranties,
whether express or implied, including but not limited to any IMPLIED WARRANTY OF
MERCHANTABILITY, ANY IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE, any
implied warranty arising out of a course of dealing or of performance, custom or usage of trade.
DRI-STEEM SHALL NOT, UNDER ANY CIRCUMSTANCES BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, LOSS OF PROFITS, REVENUE OR BUSINESS) OR DAMAGE OR INJURY TO PERSONS OR
PROPERTY IN ANY WAY RELATED TO THE MANUFACTURE OR THE USE OF ITS PRODUCTS. The
exclusion applies regardless of whether such damages are sought based on breach of warranty,
breach of contract, negligence, strict liability in tort, or any other legal theory, even if DriSteem has
notice of the possibility of such damages.
By purchasing DriSteem’s products, the purchaser agrees to the terms and conditions of this Limited
Warranty.
Extended warranty
The original user may extend the term of the DriSteem Limited Warranty for a limited number of
months past the initial applicable warranty period and term provided in the first paragraph of this
Limited Warranty. All the terms and conditions of the Limited Warranty during the initial applicable
warranty period and term shall apply during any extended term. An extended warranty term of
an additional twelve (12) months or twenty four (24) months of coverage may be purchased. The
extended warranty term may be purchased until eighteen (18) months after the product is shipped,
after which time no extended warranties are available.
Any extension of the Limited Warranty under this program must be in writing, signed by DriSteem,
and paid for in full by the purchaser.
mc_051308_0630
DriSteem Corporation
DriSteem U.S. operations are ISO 9001:2015
certified
U.S. Headquarters:
14949 Technology Drive
Eden Prairie, MN 55344
800-328-4447 or 952-949-2415
952-229-3200 (fax)
European office:
Marc Briers
Grote Hellekensstraat 54 b
B-3520 Zonhoven
Belgium
+3211823595 (voice)
+3211817948 (fax)
E-mail: [email protected]
Continuous product improvement is a policy of
DriSteem Corporation; therefore, product
features and specifications are subject to
change without notice.
DriSteem, DriCalc, Rapid-sorb, Ultra-sorb,
Vapor-logic, and Vapormist are registered
trademarks of Research Products Corporation
and are filed for trademark registration in
Canada and the European community.
Drane-kooler is a trademark of DriSteem
Corporation.
Product and corporate names used in this
document may be trademarks or registered
trademarks. They are used for explanation only
without intent to infringe.
© 2017 Research Products Corporation
Expect quality from the industry leader
For more than 45 years, DriSteem has been
leading the industry with creative and reliable
humidification solutions. Our focus on quality
is evident in the construction of the Vapormist
humidifier, which features cleanable, stainless
steel construction. DriSteem also leads the
industry with a Two-year Limited Warranty and
optional extended warranty.
For more information
www.dristeem.com
For the most recent product information
visit our Web site: www.dristeem.com
WARRANTY
