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HE120, HE160 HUMIDIFIER INSTALLATION KIT
69-1571 6
INSTALLING HUMIDISTAT
Mounting Duct
1.
Apply the template to the duct location chosen for
the humidistat. Make sure the template is level
before drilling the holes.
2.
Refer to the template (provided with the H8909
Humidistat Installation Instructions) to drill the con-
trol assembly opening and mounting holes for the
H8908.
3.
Remove the H8908 case from the base.
4.
Position the foam gasket on the H8908 base.
5.
Position the base on the duct with the arrow up.
6.
Secure the base to the duct using the four
1 in. (25 mm) mounting screws provided with humi-
distat.
7.
Connect the low-voltage wires to the leads and
replace the H8908 case. See Fig. 12.
NOTE: For wall mounting instructions, see the H8908
Installation Instructions.
Fig. 12. Humidistat base and rear view.
WIRING
CAUTION
Hazardous Voltage.
Can cause personal injury or equipment
damage.
Disconnect power supply before installing or
servicing equipment.
IMPORTANT
All wiring must comply with applicable local
code, ordinances and regulations.
Wire the humidifier motor, humidistat and transformer.
See Fig. 13.
Fig. 13. Wiring the controls.
1.
Run the two-strand thermostat wire from the
humidifier to the transformer, from the transformer
to the humidistat.
2.
Cut lengths of thermostat wire to reach between
components, leaving adequate wire at both ends
for connections.
NOTE: Transformer and humidistat can be wired in any
order.
3.
At the humidifier, connect the black and white con-
ductors to the two motor leads.
4.
At the transformer, connect both black conductors
to the two transformer terminals. Use a wire nut to
connect the white conductors.
5.
At the humidistat, connect the black and white con-
ductors to the two humidistat terminals.
TESTING HUMIDIFIER OPERATION
Checklist
❑
Humidifier is level.
❑
Starter collar is secured with sheet metal screws.
❑
Summer shut-off damper is open (in winter position).
❑
Control wiring was reviewed using circuit diagram.
❑
Transformer is plugged in.
❑
Feed line has no kinks.
❑
Overflow line slopes continuously down and ends at
floor drain or bucket.
After installation use the following steps to check the
humidifier operation:
1.
Turn on the power and the water supply.
NOTE: For HE160, see Adjusting Water Level section.
2.
Verify that basin fills and float shuts off before
water enters overflow tubing.
3.
Turn the H8908 Humidity Control to On.
4.
Make sure that drum or disk turns.
5.
Check for leaks.
6.
Reset the H8908 Humidity Control to a comfortable
setting for automatic operation.
M20179
WIRE SLOT
HUMIDISTAT WIRES
HUMIDISTAT BASE REAR OF HUMIDISTAT
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C
M20224
TRANSFORMER
BLACK
WHITE
BLACK
WHITE
HUMIDIFIER
DRIVE
MOTOR
HUMIDISTAT
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