READ COMPLETE SAFETY INSTRUCTIONS AND INSTALLATION TEMPLATE BEFORE STARTING
TEMPLATE MUST BE LEVEL
– TOP –
READ REVERSE SIDE FIRST!
READ REVERSE SIDE FIRST!
IMPORTANT!
Be sure owner’s 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.
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 9
1
⁄
2
” x 9
1
⁄
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 pre-formed 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 by gently squeezing the tabs of
the nameplate from inside the cover and
pushing out. 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. For Automatic
Humidifier Control installation instructions,
see Form IM-AHC-01 included with the
Automatic Control.
DISCONNECT
ELECTRICAL POWER TO FURNACE
BEFORE PROCEEDING!
LOCATION
1. Locate on inside wall of living area
approximately 5 feet above floor, or
in the furnace return air plenum or
duct. Adapter Plate Part No. 4402
(not included) is required for return
air installation. If humidifier is
mounted on return duct, control must
be at least 6” upstream of humidifier.
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.
8.
In order for humidifier to turn on, the
furnace blower must be operating and
the Humidifier Control must be calling
for humidity. The interface between the
humidifier and the furnace to detect
blower operation can be accomplished
several different ways. See wiring
diagrams on other side for options. Do
not use furnace blower motor wiring to
power transformer. Damage to
equipment may result.
9.
Tap into a water supply line with
the saddle valve furnished. See
instructions on saddle valve package.
The humidifier 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.
When
installing humidifier on heat pump system,
humidifier must be supplied with service
hot water.
NOTE: The saddle valve is designed to be
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
1
⁄
2
” 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. Make sure drain line has
constant downward slope and is not kinked.
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 Owner’s 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.
Figure 1
Figure 2
Figure 3
Form/Catalog: IM-HUM-12
10008994 B2205139A 5.10
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 on the humidifier. A decrease in
relative humidity reverses the process and closes the control switch.
GENERAL INSTRUCTIONS
1.
Do not attempt to repair or recalibrate
humidifier control. 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.
90-1067
90-1068
90-1069
1. Front Cover
2. Base
3. Feed Tube
4. Water Distribution Tray
5. Humidifier Pad
6. Scale Control Insert
7. Integral Damper
8. Damper Handle
9. Drain Spud
10. Hole Plug
11. Nameplate
12. Solenoid Valve
12
10
2
7
9
6
11
1
4
3
5
8
90-1172
FURNISHED ITEMS
ITEMS NOT FURNISHED
Built-in bypass damper
24 VAC Humidifier Control
Saddle valve
Humidifier Installation Template
Mounting screws (sheet metal screws)
Water supply line (
1
⁄
4
” copper)
Drain line (
1
⁄
2
” I.D. hose)
24 VAC Transformer
Low voltage wire
Bypass ductwork
Humidifier Control Adapter Plate
Part No. 4402
