Honeywell He220a, 742600, He220a1001 Installation Instruction
HE220A,B
Bypass Flow-Through Humidifier
INSTALLATION INSTRUCTIONS
READ AND SAVE THESE INSTRUCTIONS
APPLICATION
The HE220A,B Bypass Flow-Through Humidifier uses the warm air
furnace blower to provide humidification for the whole house. The
HE220A,B works with virtually any Honeywell humidity control, but for
optimal performance, use with the Honeywell Perfect Climate Comfort
Center™ control.
INST ALLA TION
TEMPLATE
WARNING
Hazardous V oltage.
Can cause personal injury or equipment damage.
Do not cut or drill into any air conditioning or electrical
accessory.
CAUTION
Freezing Water and High Water or Static Pressure Hazard.
Can cause water damage or permanent equipment damage.
• The humidifier must be located where the ambient
temperature is above 32°F (0°C) and below 160°F (71°C).
• Be sure supply plenum static pressure is no greater than
0.3 in. w.c. and water pressure is no greater than 125 psi.
IMPORTANT
To assure optimal product performance, be sure the template
is level before marking.
1. Determine the best location for the humidifier and draw a level line
on the plenum. See Fig. 1.
IMPORTANT
Mount the humidifier at least 3 in. (76 mm) above the furnace
jacket to allow adequate space for the solenoid valve and drain
line. Check that there is adequate space above the humidifier
to remove and install the humidifier cover. Do not install on a
furnace jacket.
2. Tape the template in position and trace around the template.
3. Remove the template and carefully cut the rectangular opening.
4. Disassemble the humidifier. Remove the cover and take out the
humidifier pad assembly. See Fig. 2.
HORIZONTAL
HIGHBOY
DOWN
FLO
LOWBOY
M12248B
Fig. 1. Typical humidifier installation locations.
NOTE: Sidewalls are interchangeable for either left or right
5. Position the humidifier housing in the opening (be sure it is level),
so the locking tabs are in place on the lower sheet metal edge of
the opening.
6. Secure the humidifier housing to the opening at the top and
bottom using sheet metal screws.
bypass installation. To change direction, remove the
screws holding each sidewall, switch sidewall locations
and reinstall the screws.
TEMPLATE
® U.S. Registered Trademark
Copyright © 1998 Honeywell Inc. • All Rights Reserved
69-1105EF-3
TEMPLATE
7. Locate the other plenum and cut an opening for a 6 in. (152 mm)
collar.
8. Install the 6 in. (152 mm) collar.
NOTE: Be sure to install a duct damper for summer shutoff on
systems with air conditioning.
COVER
WATER
FEED NOZZLE
HUMIDIFIER
PAD ASSEMBLY
WIRING
CAUTION
Hazardous Volta ge.
Can cause personal injury or equipment damage.
• Disconnect power supply before installing or servicing.
• On multispeed blower applications, do not wire the high
voltage side of the transformer to the same power source that
services the furnace blower or the transformer may burn out
prematurely.
FRAME
HUMIDIFIER
HOUSING
WATER
FEED TUBE
SIDEWALL
BYPASS SIDEWALL
Fig. 2. Humidifier components.
9. Install a 6 in. (152 mm) diameter duct from the collar to the
humidifier.
M12304
All wiring must comply with applicable local codes, ordinances and
regulations.
1. Mount the transformer in a convenient location.
IMPORTANT
Install transformer on the outside of a grounded metal junction
box using only a 7/8 in. (22 mm) knockout hole. Place mounting
tabs into the knockout hole and firmly tighten the locking screw.
Field wiring connections and grounding means for the
transformer and enclosure shall be in accordance with the
National Electrical Code (NEC) and the Canadian Electrical
Code (CEC).
2. Connect wires to the 120V side of the transformer.
For humidity control wiring connections:
1. Wire the humidifier solenoid valve, current sensing relay or sail
switch, humidity control and transformer. Refer to the humidity
control installation instructions for mounting and wiring
information.
IMPORTANT
• For proper operation, the humidifier must be energized during
blower motor cycles.
• Current sensing relay or sail switch is not needed with the
Automatic Humidity Control.
NOTE: Select models of fan centers include humidifier taps so the
current sensing relay or sail switch are not needed.
NOTE: Some installations require a 90° elbow attachment to the
collar.
10. Seal the duct connections with duct tape.
NOTE: To avoid sagging and stress on the humidifier, add
support when ducting is longer than 4 ft (120 cm).
11. Reinstall the humidifier pad assembly in the humidifier housing.
NOTE: Be sure the water f eed tube is not pinched or kinked.
12. Hinge the cover in place and secure with the thumbscrew located
at the bottom of the cover.
69-1105EF—3 2
PLUMBING SADDLE VALVE
Hot or cold water, either hard or softened, can be used in the humidifier.
1. Use the self-piercing saddle valve (included) to tap into the water
supply line at an appropriate location.
WARNING
Chemical Hazard.
Can cause personal injury or equipment damage.
Do not use any line connected to an air conditioner.
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