Please Read And Save These Instructions
• Installationbyanyoneotherthanaqualiedcontractorvoidsthewarranty.
• Productdesignedforresidentialinstallationonly.Commercialinstallationvoidswarranty.
• Modicationoralterationofproduct,parts,installationinstructionsorlocalsafetycodesvoidswarranty.
• Readourfullwarrantypolicyattheendofthisdocument.
Breathe Healthier
About the MHX3C Digital Humidistat
The MHX3C control provides low voltage control of most humidiers. The humidistat uses a SPDT switch and is designed
for wall mounting in the living area or mounting on the return air duct.
WARNING! Always TURN OFF POWER TO THE HVAC SYSTEM prior to installing or servicing the humidier or
humidistat. Improper operation can result in over or under humidication. Improper voltage can cause malfunction or
damage to the control. All local building and electrical codes must be followed. The technical specications for this
product and the contents of the user manual are subject to change without notice.
WARNING! Do not set relative humidity too high during cold weather. Over humidication can result in condensation,
structural damage and mold.
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Canadian General Filters, Ltd.
400 Midwest Rd.
Toronto, ON M1P3A9 Canada
Toll Free: (888) 216-9184
www.cgfproducts.com
General Filters, Inc.
43800 Grand River Avenue
Novi, Michigan 48375
Toll Free: (866) 476-5101
www.generalaire.com
MHX3C Humidistat
(GFI #7038)
Installation Manual
GENERAL FILTERS
INCORPORATED
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