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www.generalfilters.com

Model 1137 Humidifier Installation Manual

Limited Warranty

What is Covered

•  Five Years:  The 1137, if properly registered by the return of the warranty registration card to the manufacturer, is 

warranted by General Filters, Inc. (“Company”) for a period of five (5) years from the date of the original installation, 
when installed in residential applications only (“Limited Warranty Period”). 

•  The humidistat is warranted for a period of one (1) year from date of original installation.
•  This Limited Warranty runs to the original purchaser of the Product(s) who owns, and resides in, the residential 

property for which it is installed and maintained. 

•  The Limited Warranty coverage begins upon the date the Product(s) is installed. 
•  This Limited Warranty is valid only for the original customer purchasing from Company, and is not transferable.

What is Not Covered

•  The following components are not covered by this warranty: Vapor Pads, sleeves or plates, wiring, water strainers or 

metering orifices.

•  This product is designed for residential installation only, therefore, commercial or industrial installations are not 

covered under this warranty.

•  Failure to install the 1137 in accordance with these instructions, local codes or ordinances voids the warranty.
•  Modifications, changes or alterations to equipment.
•  Failure to perform regular maintenance as described in this document voids the warranty.
•  This Limited Warranty is valid only for the original customer purchasing from Company, and is not transferable.
•  Damage caused by misuse, neglect, fire, wind, mold, damage in transit, or other casualty, contact with corrosive 

materials (chlorine, flourine, salt, urine, fertilizers, recycled waste water, or other damaging substances), damage 
caused during installation, or any cause beyond General Filters, Inc. control is not covered under this Limited 
Warranty.

•  Labor involved in diagnostic calls or in removing, repairing, servicing or replacing parts is not covered under this 

Limited Warranty.

•  Shipping charges are not covered by this Limited Warranty.
•  Agreements made by third parties that are not listed in this Limited Warranty.

What is Not Covered, Cont.

•  Liability for special, incidental, direct, indirect, collateral and consequential damages is excluded. Some states do 

not allow limitation of incidental damages, so the limitations or exclusions may not apply to you. General Filters, 
Inc. will not pay electricity or fuel costs, or increases in electricity or fuel costs, for any reason whatsoever, including 
additional or unusual use of supplemental electric heat. This warranty does not cover lodging expenses or labor 
charges. General Filters, Inc. shall not be liable for any default or delay in performance under this warranty caused 
by any contingency beyond its control. This warranty gives you specific legal rights, and you may also have other 
rights which vary from state to state.

To Make a Warranty Claim / Obtain Service

•  Owner must submit a warranty registration within 30 days after installation of Product(s).
•  The Owner must complete our online Return Merchandise Authorization (RMA) Form (www.generalfilters.com/

returns), to arrange for applicable Limited Warranty service, within the warranty period. Owner must also provide 
complete model and serial number, proof of required periodic maintenance, installation date and location and an 
accurate, detailed description of the problem.

•  Owner shall be solely responsible for properly packaging the Covered or Extended Coverage Equipment, for all 

freight charges, and for all risk of loss associated with shipment. 

•  Owner is responsible for obtaining a licensed contractor to perform any repairs, maintenance or other work on unit.
•  If during the Limited or Extended Warranty Period, Covered or Extended Coverage Equipment fails because of 

a manufacturing defect, Company will provide a free replacement part to the Owner through a licensed service 
contractor. 

Summary of Contents for 1137 Series

Page 1: ...Commercial installation voids warranty Modification or alteration of product parts installation instructions or local safety codes voids warranty Read our full warranty policy at the end of this docum...

Page 2: ...ont 5 Installing Wiring The Control 5 6 Installation Cont 7 How the Humidifier Works 7 Maintenance 8 Parts Drawing 8 Trouble Shooting 9 FAQ s 10 Warranty Registration Keep a Copy For Your Records 11 L...

Page 3: ...Stable Automotive Grade Plastic Humidistat Models MHX3C Included Voltage 120V In Box Humidifier humidistat Installation Instructions Vapor Pad Parts Kit Water Tube Kit Humidistat Wire Drain Pan Power...

Page 4: ...dle counterclockwise to open saddle valve leave open for several seconds to flush dirt from pipe and tubing Steel Brass Hard Plastic Pipe 1 Shut off water supply and drain pipe 2 Turn handle clockwise...

Page 5: ...screws Low voltage wire may enter the humidistat under the foam seal 5 Connect wires to screw terminals on the control assembly as shown in wiring diagram Replace housing 6 MHX3C Mounting On The Retur...

Page 6: ...ff switch in series with the hot wire WARNING CHECK WITH LOCAL AUTHORITIES FOR COMPLIANCE WARNING ALL WIRING SHOULD COMPLY WITH LOCAL ELECTRICAL CODES FIG 6C AIR PRESSURE SWITCH WITH TWO SPEED BLOWER...

Page 7: ...id valve The solenoid valve and humidifier fan are controlled by a humidistat connected through an isolation relay The humidistat is designed for wall mounting in the living area or surface mounting o...

Page 8: ...ner screen 990 17 GFI 7005 from the orifice fitting Clean the mineral deposits from all parts If the orifice is clogged it may be opened by inserting a small needle Reinsert the filter into the orific...

Page 9: ...changed replaced your Vapor Pad at the proper intervals once per year to ensure the greatest production of moisture Check the setting of your humidistat to ensure it is set higher than current humidit...

Page 10: ...gile The coating is similar in composition to the minerals that accumulate on the pad If you subject the Vapor Pad to cleaning you usually remove much of the coating and the pad becomes ineffective Th...

Page 11: ...Labor involved in diagnostic calls or in removing repairing servicing or replacing parts is not covered under this Limited Warranty Shipping charges are not covered by this Limited Warranty Agreement...

Page 12: ...no event be liable for incidental or consequential damages This limited warranty gives you specific legal rights and you may also have other rights which vary from state to state Some states do not al...

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