SUPPLY
HUMIDIFIER
120 VAC
READ COMPLETE SAFETY INSTRUCTIONS, PRE-INSTALLATION SETUP AND CHECKOUT PROCEDURE
FOR BYPASS HUMIDIFIER AND INSTALLATION / TEMPLATE INSTRUCTIONS BEFORE STARTING
ATTENTION INSTALLER:
This product must be installed by a qualified heating and air conditioning contractor. Failure to do so could result in serious injury from electrical shock.
This product must be installed in compliance with all local, state and federal codes.
If the furnace has central cooling, the humidifier bypass damper must be closed during the cooling season.
BYPASS HUMIDIFIER MODEL EHUMD200A
WARNING
1. ELECTRICAL SHOCK HAZARD.
Disconnect electrical power to the
furnace before starting installation.
Failure to do so could result in
serious injury from electrical shock.
SHARP EDGES HAZARD. Sharp
2.
edges may cause serious injury from
cuts. Use care when making plenum
openings and handling ductwork. Use
personal protective equipment when
installing HVAC equipment.
RISK OF SCALDING. Water
3.
temperature over 125°F can cause
severe burns and scald instantly.
Shut off the hot water supply before
disconnecting or tapping into any hot
water supply line.
NOTE: FOR COMMUNICATING SYSTEM
WIRING DIAGRAMS, SEE ENCLOSED
INSTALLER’S GUIDE, FORM 18-HE87D1-3.
WATER SUPPLY
90-1104
Trane
Ingersoll Rand
6200 Troup Highway
Tyler, TX 75711-9010
RISK OF PROPERTY AND EQUIPMENT DAMAGE.
1. Do not install humidifier in attic or crawl areas.
2. Do not install humidifier where freezing temperatures
could occur. The water line could freeze and crack
causing water damage to the home.
3. Do not install humidifier or bypass connection on the
furnace cabinet.
4. Do not install humidifier or bypass connection on a
plenum face where the blanked off ends of the cooling
coil will restrict air movement through the humidifier.
5. Do not set humidity level above recommended or to
recommended level if condensation exists on inside
windows of any unheated space, as condensation
damage may result. Excess humidity can cause
moisture accumulation which can allow the possibility
for mold growth in your home.
SHUT-OFF
(SADDLE VALVE)
MANUAL
HUMIDIFIER CONTROL
YELLOW 24 V
SOLENOID
VALVE WIRES
IMPORTANT
NOTE: THE INTEGRATED FURNACE CONTROL HAS OPTIONAL
ACCESSORY CONNECTIONS FOR THE HUMIDIFIER. SEE THE
FURNACE INSTALLER’S GUIDE FOR THE SCHEMATIC DIAGRAM
OF THE FURNACE AND THE FIELD WIRING DIAGRAM FOR THE
OPTIONAL ACCESSORIES.
CONNECT DRAIN LINE HERE
TEMPLATE MUST BE LEVEL
CAUTION
6. Do not connect humidifier transformer to
blower motor wiring. Premature component
failure may result.
7. When installing Manual Humidifier Control on
downflow furnace, ensure blower continues
to run after a heat call is satisfied to eliminate
high temperatures from damaging the Control.
8. Do not install humidifier where water pressure
exceeds 125 psi, since damage to the
humidifier may result. Follow codes in effect
concerning pressure reduction.
9. Do not install humidifier on the supply plenum
where static pressure exceeds 0.2” W.C.
IMPORTANT
USE THE 120 VAC
POWER SOURCE ON THE
INTEGRATED FURNACE
CONTROL HUMIDIFIER
ACCESSORY TERMINALS
MARKED HUM-H, HUM-N
TO POWER THE HUMIDIFIER
CONTROL TRANSFORMER.
24
VAC
TRANSFORMER
(FURNISHED)
SPECIFICATIONS
HUMIDIFIER DIMENSIONS
Width (including solenoid valve): 155⁄8”
Height (including drain spud): 13”
Depth: 101⁄4”
BYPASS DUCT OPENING
6” diameter
PLENUM OPENING
91⁄2”W x 91⁄2”H
WATER FEED RATE
3 gph
ELECTRICAL DATA
24 VAC-60 Hz, 0.5 AMP
INSTALLATION OPTIONSWIRING DIAGRAM
The humidifier can be installed on either the supply or return plenum of a forced
air handling system and is easily reversible for installation with right hand or
left hand bypass duct connections. The humidifier dimensions and serviceability
must be considered when selecting the best location for the humidifier.
RETURN
AIR
Upflow Furnace
OPTION “A” REAR OF FURNACE
OR REAR MOUNT
RETURN
AIR
90-1105
HUMIDIFIER
AIR
FLUE
COOLING
COIL
RETURN
AIR
Upflow Furnace
OPTION “B” FRONT OF FURNACE
OR FRONT MOUNT
HUMIDIFIER
COOLING COIL
SUPPLY
AIR
Downflow FurnaceHorizontal Furnace
FLUE
SUPPLY
RETURN AIR
SUPPLY AIR
AIR
OPTIONAL FLUE
NOT ALL MODELS
COOLING COIL
HUMIDIFIER
COOLING
COIL
READ REVERSE SIDE FIRST! READ REVERSE SIDE FIRST!
– TOP –
READ COMPLETE SAFETY INSTRUCTIONS AND INSTALLATION TEMPLATE BEFORE STARTING
FURNISHED ITEMS
Built-in bypass damper
24 VAC Manual Humidifier Control
24 VAC Transformer
Saddle valve
Humidifier Installation Template
ITEMS NOT FURNISHED
Mounting screws (sheet metal screws)
Water supply line (1/4” copper)
Drain line (1/2” I.D. hose)
Low voltage wire
Bypass ductwork
Current Sensing Relay
BAYRLY10ASENSA (if required)
1. Remove front cover by pressing center
tabs on top and bottom of the cover (1) and
base (2). Pull feed tube (3) out of the water
distribution tray (4). Tip the evaporative
assembly forward and lift it out
of the humidifier. (See Figure 1)
2. The humidifier comes assembled for left
side discharge. If converting to right side
discharge, the base can be rotated so round
collar is facing to the right. Swap the location
of the hole plug (10) and drain spud (9) if using
a right side discharge. To remove the cap, push
and twist from inside the housing while lifting
the cap up slightly on the outside. To remove the
drain spud, twist and push from
the outside of the base.
3. Using a level, position this template at
least 3 inches above the furnace housing or
cooling coil, if applicable, for clearance of
the drain line. Trace around template edges.
Remove the template and accurately cut the
plenum opening 91⁄2” x 91⁄2”, being careful
to avoid injury from sharp edges.
4. Place the humidifier into the plenum
opening, install six sheet metal mounting
screws (not furnished) at the top and sides
of the humidifier interior.
5. Install a 6” collar in a convenient location
on the opposite plenum. Attach a 90° elbow
and measure the length of 6” round duct
required to make the connection. The design
of the humidifier collar provides a solid
connection with the bypass duct through the
use of inside support ribs and pre-formed
holes for sheet metal screws. Slip the duct
inside the collar of the humidifier, up
to the support ribs. Using the preformed holes at the top and bottom
of the humidifier collar, secure the
duct to the humidifier collar with two
sheet metal mounting screws (not
furnished). Support bypass ducts
longer than 4 feet to prevent sagging.
6. Reinstall the evaporative assembly
back into the base, with the bottom
of the scale control insert (6) sitting
firmly in the inside of the drain spud
(9). Push the feed tube back into the
water distribution tray. (See Figure
2) Put the front cover back on. If
the nameplate (11) is upside down,
remove it and rotate the nameplate
so it is right side up, and snap back
into place. Turn damper handle (8) to
the open position “WINTER” for the
heating season, or closed position
“SUMMER” for the cooling season.
7. Locate and install the Manual
Humidifier Control by following the
instructions shown in step #7A.
DISCONNECT ELECTRICAL POWER TO
FURNACE BEFORE PROCEEDING TO
STEP #7A!
10
2
1. Front Cover
2. Base
3. Feed Tube
4. Water Distribution Tray
7
5. Humidifier Pad
6. Scale Control Insert
7. Integral Damper
8. Damper Handle
9. Drain Spud
10. Hole Plug
11. Nameplate
12. Solenoid Valve
90-1108
8
TEMPLATE MUST BE LEVEL
Figure 1
7A. MANUAL HUMIDIFIER CONTROL INSTALLATION INSTRUCTIONS:
The Manual Humidifier Control is designed for low voltage service to control
humidification equipment. An increase in relative humidity expands the nylon ribbon
that opens the control switch to stop operation of the humidifier. A decrease in relative
humidity reverses the process and closes the control switch.
LOCATION
For Wall Mount:
1. Locate on inside wall of living area
approximately 5 feet above floor.
2. Do not locate Control in the direct path of
furnace discharge air or drafts from open doors
and windows.
3. Do not install where operation might be
affected by lamps, sunlight, fireplace registers,
radiators, concealed air ducts and pipes or
room occupants.
4. The basic rules for location of thermostats also
apply to humidifier controls.
5. Remove and discard foam gasket and secure
control to wall over wire access opening with
screws provided.
For Return Duct Mount:
1. Position manual humidistat at least 6” upstream
of bypass duct connection or humidifier.
2. Avoid injury from sharp edges when cutting
opening.
3. Make sure foam gasket is in place and secure
control to duct with screws provided.
12
9
6
1
Figure 2 Figure 3
90-1067 90-1068 90-1069
will function with cold, hot, softened or
unsoftened water. The use of service hot
water (140°F MAX.) and constant blower
operation will provide maximum evaporative
capacity.
NOTE: The saddle valve is designed to be
GENERAL INSTRUCTIONS
1. Do not attempt to repair or
recalibrate Humidifier Control.
Humidifier Controls requiring
service should be returned to
your distributor.
2. Use Humidifier Control in low
voltage (24 VAC) applications
only. Install 24 VAC wiring to
Humidifier Control as shown in
Wiring Diagrams, opposite side.
3. Make sure no bare wires are
exposed or insulation damaged.
Insulation on wire should extend
to head of screws.
4. Make sure all splices are
mechanically and electrically
secure.
5. To remove dirt or other foreign
matter from nylon ribbon and
control interior, dust lightly with
a fine, soft brush.
4
3
5
8. Connect the transformer 120 VAC primary
wires to the integrated Furnace Control Accessory
Terminals. The terminals are marked HUM-H,
HUM-N, where available. The HUM terminals will
provide 120 VAC to the transformer whenever there
is a call for heat. The transformer is designed to be
mounted on a junction box. See furnace Installer’s
Guide for wiring recommendations. NOTE: For gas
furnaces without humidifier accessory terminals
providing 120 VAC, use the Current Sensing Relay
(BAYRLY10ASENSA).
9. Tap into the top or side (not bottom) of the water
supply line with the saddle valve furnished. See
instructions on saddle valve package. The humidifier
fully opened or closed. Do not use it to
regulate water flow.
10. Connect tubing from the saddle valve to
the inlet side of the solenoid valve using 1⁄4”
O.D. copper tubing (not furnished). DOUBLE
WRENCH TO PREVENT LEAKING!
(See Figure 3)
11. Drain spud is designed to accept
I.D. plastic hose (not furnished). Run drain
line from drain spud to floor drain. CAUTION:
If hose clamp is used, do not over tighten,
drain spud could crack. Be sure drain line
has continuous slope. NOTE: Do not sweat
or directly attach metal drain line to fitting.
Do not use solvent type adhesive when
connecting plastic drain line, since damage
to fitting could result.
12. Open saddle valve completely and turn
on furnace. Turn up Humidifier Control so
that humidifier will turn on. Allow humidifier
to run until water is observed coming out of
the drain line. Check to see if humidifier and
saddle valve are watertight. Check operation
to make sure that all electrical components
function properly. Set Humidifier Control to
level recommended in Use and Care manual.
NOTE: BEFORE LEAVING THE
JOB SITE, MAKE SURE:
1. Saddle valve is fully open.
2. All plumbing connections are
watertight.
3. Humidifier functions properly.
4. Bypass damper is in proper
position.
IMPORTANT! Be sure Use and Care manual containing
instructions for operation and warranty information is given to owner
in order to avoid unnecessary calls. Warranty is void unless humidifier
is installed by qualified heating and air conditioning contractor due to
possible misapplication of product.
11
18-CH30D1-3 10013277 B2208144A 7.18
1
⁄2”
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