HE120A,B
By-Pass Drum Humidifier
INSTALLATION INSTRUCTIONS
WARNING
HUMIDIFIER
Electrocution and Chemical Hazard.
Can cause death or blindness.
Do not cut or drill into any air conditioning line or electrical
accessory.
AL
HORIZONT
BYPASS
COLLAR
CAUTION
Freezing Water Hazard.
HIGHBOY
Can result in water damage to property.
Locate the humidifier where the ambient temperature is
between 32°F and 180°F (0°C and 93°C).
DOWN
FLO
IMPORTANT
Template must be level before marking location.
LOWBOY
1. Determine the best location for the humidifier and draw a
level line on the duct. See Fig. 1.
2. Tape this template in position and trace around it.
3. Remove the template and carefully cut the rectangular open-
ing.
M12248D
4. Position the humidifier housing (see Fig. 2) over the hole (be
sure it is level) and mark the five mounting holes.
Fig. 1. Typical humidifier installation locations.
TEMPLATE
69-1104—3
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All wiring must comply with applicable local codes, ordinances and
regulations.
1. Mount the transformer in a convenient location.
2. Connect the wires to the 120V side of the transformer.
3. Wire the drum motor, transformer, and humidity Control.
Refer to the humidity Control installation instructions for
mounting and wiring information.
SQUEEZE
SLIGHTLY
TO INSTALL
OPEN
DRUM END
CHECKOUT PROCEDURE
PAD
TINNERMAN
DRUM SHAFT
METAL TABS
CLOSED DRUM END
After winter startup or maintenance, use the following procedure to
check the humidifier operation:
1. Turn on the humidifier power and water supply.
2. Check the water level in the humidifier water pan water level
setting should be 1-3/8 in. (35 mm). Turn the valve adjust-
ment screw (located on the water valve inside the humidifier)
clockwise to lower the water level, and counterclockwise to
raise it.
M12243
Fig. 3. Drum and humidifier pad assembly.
3. Turn the Convertible Humidity Control to the highest setting,
or the H1008 Automatic Humidity Control to the Test position,
and set the thermostat to 10°F (6°C) above the room temper-
ature.
WIRING
4. Check that the humidifier pad is rotating.
CAUTION
5. Reset the thermostat and the Convertible Humidity Control to
a comfortable setting, or the Automatic Humidity Control to
the desired frost factor setting, for automatic operation.
Electrical Shock Hazard.
Can shock or burn out equipment.
• Disconnect power supply before installing or servicing.
• To prevent premature transformer burnout on multispeed
blower applications, do not wire the high voltage side of
the transformer to the same power source that services
the furnace blower.
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Scarborough, Ontario M1V 4Z9
® U.S. Registered Trademark
© 2006 Honeywell International Inc.
69-1104—3 C.H. Rev. 04-06
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