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R
EAD COMPLETE SAFETY INSTRUCTIONS AND INSTALLATION TEMPLATE BEFORE STARTING INSTALLATION
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 orderto avoidunnecessary calls.Warrantyisvoid unless
humidifier is installed by qualified heating and air conditioning
contractor due to possible misapplication of product.
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
10008975 B2205117A 4.10
90-1067 90-1068 90-1069
12
10
2
7
9
6
11
1
4
3
5
8
90-1250
FURNISHED ITEMS
ITEMS NOT FURNISHED
B
uilt-inbypass damper
24VAC Transformer
DigitalHumidifier Control
(
Model 600only)
M
anual Humidifier Control
(
Model 600Monly)
H
umidifier Control InstallationInstructions
Saddlevalve
HumidifierInstallationTemplate
M
ountingscrews(sheetmetalscrews)
Watersupplyline(
1
⁄4” copper)
Drain line(
1
⁄2” I.D.hose)
L
owvoltagewire
B
ypass ductwork
M
odel50 CurrentSensingRelay (ifrequired)
1. Front Cover
2. Base
3. Feed Tube
4. Water Distribution Tray
5. Water Panel Evaporator
6. Scale Control Insert
7. Integral Damper
8. Damper Handle
9. Drain Spud
10. Hole Plug
11. Nameplate
12. Solenoid Valve
PARTS LIST
1. Press top & bottom tabs
to remove cover (1).
Pull feed tube (3) out of
distribution tray (4). Remove
Water Panel
®
Evaporator
assembly. See Figure 1.
2. Humidifier is supplied
with bypass duct
connection on left. For right
side bypass, swap location
of drain spud (9) and cap
(10). Twist to remove spud
and cap.
3. Position template on
supply or return plenum.
Make sure template is level.
Allow clearance for drain
line and for servicing. Trace
template outline. Cut 10”
wide x 12-3/4” high opening.
Avoid injury from sharp
edges.
4. Place humidifier base (2) in
opening and secure with 6 screws
in openings provided.
5. Select location for 6” collar
on opposite plenum to minimize
length and number of elbows in
bypass duct. Install 6” bypass
duct components. Attach duct to
humidifier collar using 2 screws
in openings provided.
6. Insert Water Panel Evaporator
assembly into base. Make sure
bottom of scale control insert (6)
is in drain spud. Snap top of
evaporator assembly into base.
Insert feed tube into distribution
tray. See Figure 2. Rotate
nameplate (11) if necessary, so it
is right side up. Place point bypass
damper handle (8) to “WINTER”
(open) for heating season and
“SUMMER” for cooling season.
7. Control installation
and wiring. Disconnect
electrical power to furnace
before wiring control.
In order for humidifier to
operate, furnace must be
on and RH must be below
set-point of control.
Wiring diagrams illustrate
recommended method of
detecting furnace
operation.
MANUAL HUMIDIFIER
CONTROL, MODEL 600M:
Manual Control can be
mounted in return duct or
on wall in living space.
Knob and cover must be
removed to mount control.
See wiring diagram for 24V
control connections.
• For return duct mounting,
position template at least 6”
upstream of bypass duct
connection or humidifier.
Avoid injury from sharp
edges when cutting
opening. Make sure foam
gasket is in place and
secure control to duct using
2 screws in holes provided.
• For wall-mount, select
location that will not be
affected by drafts or heat
sources. Remove and
discard foam gasket and
secure control to wall over
wire access opening using
screws & anchors provided.
DIGITAL HUMIDIFIER
CONTROL, MODEL 600:
• Select location for control
on return duct at least 6”
upstream of bypass duct
connection or humidifier.
Drill 3/4” hole for sensor.
Knob and cover must be
removed to mount control.
Place control on duct with
RH sensor extending into
duct opening. Make sure
gasket is in place around
sensor cage. Secure control
to duct using 2 screws in
openings provided.
• See wiring diagrams on
template and control
instructions for 24 V control
connections.
8. Humidifier will function with
cold, hot, softened or unsoftened
water. Hot water (140°F max) is
strongly recommended toprovide
maximum evaporative capacity.
Saddle valve provided may be
used to tap into water supply.
See installation instructions on
saddle valve package. Saddle
valve is designed to be fully
opened or closed. Do not use
to regulate flow.
9. Run 1/4” copper tubing from
saddle valve to solenoid valve.
DOUBLE-WRENCH TO PREVENT
LEAKING. See Figure 3.
10. INSTALL DRAIN IN
ACCORDANCE WITH LOCAL
CODES. Run 1/2” I.D. hose
from drain spud to floor drain.
Make sure drain has constant
downward slope and is not
kinked. Do not over-tighten
hose clamp onto drain spud.
Do not use solvent adhesive
on drain spud.
11. Check humidifier
operation. Open saddle valve
and turn control to highest
setting. Turn on furnace. Allow
humidifier to run until water
flows from drain. Make sure
all electrical connections are
secure and all plumbing
connections are water-tight.
Set control to proper setting.