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INSTALLATION INSTRUCTIONS

69-1428-01

Template (entire sheet) Top of Humidifier

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HE365 Powered Flow-Through Humidifier

READ AND SAVE THESE INSTRUCTIONS

APPLICATION

The HE365 Powered Flow-Through Humidifier works with the warm 

air furnace blower to provide humidification for the whole house. The 

HE365 works with virtually any Honeywell humidity control, and can 

be integrated to the temperature control in the home when controlled 

by the Honeywell Perfect Climate Comfort Center™ control.

INSTALLATION

When Installing this Product...

1.

Read these instructions carefully. Failure to follow them could 

damage the product or cause a hazardous condition.

2.

Check the ratings given in the instructions and on the product to 

make sure the product is suitable for your application.

3.

Installer must be a trained, experienced service technician.

4.

After installation is complete, check out product operation as 

provided in these instructions.

CAUTION

Hazardous Voltage.

Improper drilling can cause equipment damage or

personal injury.

Do not cut or drill into any air conditioning or electrical 

accessory.

CAUTION

Freezing Water, Flooding or Static Pressure Hazard.

Can cause water damage or permanent equipment 

damage.

Locate the humidifier where the ambient temperature is 

between 32°F (0°C) and 160°F (71°C) or property damage 

can occur. 

Do not install humidifier where freezing temperatures could 

occur.

Be sure supply plenum static pressure is no greater than 

0.4 in. wc and water pressure is no greater than 125 psi.

IMPORTANT

Mount the humidifier at least 3 in. (76 mm) above the fur-

nace jacket to allow adequate space for the 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.

1.

Determine the best location for the humidifier and draw a level line on 

the plenum. See Fig. 1 and 2.

IMPORTANT

To assure optimal product performance, be sure the tem-

plate is level before marking.

2.

Tape this piece of paper in position as your template and trace 

around the template. 

3.

Remove the template and carefully cut the rectangular opening.

4.

Loosen the thumbscrew on the bottom of the humidifier and 

remove the cover.

5.

Remove the humidifier pad assembly by grasping the top of the 

tray and pulling the assembly out of the housing. See Fig. 3.

6.

Position the securing clips as shown in Fig. 4.

Fig. 1. Typical humidifier installation locations.

Fig. 2. HE360 Humidifier location in relation to air conditioning 

cooling coils.

Fig. 3. Humidifier components.

Fig. 4. Position securing clips.

7.

Position the humidifier housing in the hole (be sure it is level), 

so the locking tabs are in place on the upper and lower sheet 

metal edge of the hole. 

8.

Push in securing clips until completely seated.

9.

Drill holes and install the three sheet metal screws at the top of 

the humidifier housing. Secure the housing with the three 

remaining screws.

10.

Reinstall the humidifier pad assembly in the humidifier housing.

IMPORTANT

For proper operation, be sure the mark on the end of the 

humidifier pad is facing up. Check that the water feed tube is 

placed in the guide slots of the humidifier housing.

11.

Hook the top of the cover to the housing and secure with the 

thumbscrew located at the bottom of the cover.

WIRING

WARNING

Voltage Hazard.

Moving parts can cause electrical shock and injury.

Disconnect power supply before installation or servicing.

This device contains a moving fan blade; do not operate the 

humidifier without the cover securely attached.

All wiring must comply with applicable local codes, ordinances 

and regulations.

For H808 Humidistat, H8908 or H908 Convertible 
Humidity Control Wiring Connections:

IMPORTANT

• Select models of fan centers include humidifer taps so the 

current sensing relay or sail switch is not needed.

• If not using a current sensing relay or sail switch, the 120V 

humidifier plug must be energized during blower motor 

cycles for proper operation.

12.

Wire the current sensing relay or sail switch.

13.

Connect only the two yellow wires to the humidistat (red wire 

connections are not used for mechanical humidistats). See the 

typical wiring diagrams in Fig. 5 through 7.

For additional mounting and wiring information, refer to the humidistat 

installation instructions.

M12808B

HORIZONT

AL

DOW

N

FLO

LOWBOY

RETURN

RETURN

RETURN

HIGHBOY

RETURN

M12812B

M31023

COVER 

ASSEMBLY

HUMIDIFIER 

PAD ASSEMBLY

FEED TUBE NOZZLE

WATER 

DISTRIBUTION TRAY

HUMIDIFIER

HOUSING

THUMB 

SCREW

M12813A

CLIP

CLIP

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