Honeywell He220a, 742600, He220a1001 Installation Instruction

HE220A,B

Bypass Flow-Through Humidifier

INSTALLATION INSTRUCTIONS

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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

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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