Owner's Manual

Model 1137 Humidier Installation Manual
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Subject
Specications
Unit Location
Additional Materials That May Be Necessary
Installation
Installation Cont.
Saddle Valve / Solenoid Valve Installation
Installation Cont.
Installing / Wiring The Control
Installation Cont.
How the Humidier Works
Maintenance
Parts Drawing
T
rouble Shooting
FAQ’
s
Warranty Registration
1137 Table of Contents
WARNING!
This symbol indicates: IMPORTANT INSTRUCTIONS!
Failure to heed them can result in serious injury or death.
CAUTION!
This symbol indicates: IMPORTANT INSTRUCTIONS!
Failure to heed them can result in serious injury or material property damage.

!

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Our Brands
®
Last Updated: 05-2021
400 Midwest Rd.
Toronto, ON M1P 3A9
Canada
Toll Free: [phone]
www.generalaireiaq.ca
[e-mail]
IMPORTANT INSTALLATION INSTRUCTIONS
GF-1137L model fan-power humidifier has a built-in transformer.
A 24V SPST (Single-Pole Single-Throw) relay is field supplied by contractor
and required for model 1137L installation.
• DO NOT connect yellow wires to furnace board.
• DO NOT use red wires in installation.
• ONLY connect yellow wires as follows:
- Load side of 24V relay (C) to (C) on GF-MHX3 Humidistat.
- Load side of 24V relay (NO) wired with yellow wire on humidifier. Then
connect, the other yellow wire on humidifier to (NO) on Humidistat to
complete the circuit.
- Coil side of relay wired to C/W for heat call at Control board of furnace