Master VENT-FREE NATURAL GAS HEATER Owner's Manual

1103424OWNER’S MANUALSave this manual for future reference.WARNING: Improper installation, ad-justment, alteration, service, or main-tenance can cause

10UNVENTED NATURAL GAS LOG HEATER103424INSTALLING HEATER BASEASSEMBLY WARNING: If installing in asunken fireplace, special care isneeded. You must rai

11103424OWNER’S MANUALINSTALLATIONContinuedFigure 11 - Attaching Flexible Gas Hoseto Heater Gas Regulator4. Remove heater base from fireplace.5. Drill

12UNVENTED NATURAL GAS LOG HEATER103424ONPOSITIONOFFPOSITIONPressure Testing Gas SupplyPiping SystemTest Pressures In Excess Of 1/2 PSIG1. Disconnect

13103424OWNER’S MANUAL2443Each log is marked with a number. Thesenumbers will help you identify the log wheninstalling. It is very important to instal

14UNVENTED NATURAL GAS LOG HEATER103424Figure 20 - Control Knob and Ignitor But-ton LocationControl KnobIgnitor ButtonLIGHTING INSTRUCTIONS WARNING:•

15103424OWNER’S MANUAL1. STOP! Read the safety information,column 2.2. Make sure manual shutoff valve isfully open.3. Press in and turn control knob c

16UNVENTED NATURAL GAS LOG HEATER103424INSPECTINGBURNERSCheck pilot flame pattern and burner flamepatterns often.PILOT FLAME PATTERNFigure 24 shows a

17103424OWNER’S MANUALCLEANING ANDMAINTENANCE WARNING: Turn off heaterand let cool before cleaning. CAUTION: You must keepcontrol areas, burners, and

18UNVENTED NATURAL GAS LOG HEATER103424TROUBLESHOOTING WARNING: Turn off and un-plug heater and let cool beforeservicing. Only a qualified ser-vice pe

19103424OWNER’S MANUALOBSERVED PROBLEMOne or both burners do not light after ODS/pilot is litDelayed ignition of one or both burnersBurner backfiring

2UNVENTED NATURAL GAS LOG HEATER103424 WARNING: Any change tothis heater or its controls can bedangerous.SAFETYINFORMATIONCarbon Monoxide Poisoning: E

20UNVENTED NATURAL GAS LOG HEATER103424TROUBLESHOOTINGContinuedIMPORTANT: Operating heater where impurities in air exist may create odors. Cleaningsup

21103424OWNER’S MANUALFigure 33 - Locating Thermostat SensingBulb on Masonry FireplaceOPTIONALPOSITIONING OFTHERMOSTATSENSING BULBFOR MASONRY ANDFACTO

22UNVENTED NATURAL GAS LOG HEATER103424TECHNICALSERVICEYou may have further questions about in-stallation, operation, or troubleshooting.If so, contac

23103424OWNER’S MANUALNote: Use only original replacement parts.This will protect your warranty coverage forparts replaced under warranty.PARTS UNDER

24UNVENTED NATURAL GAS LOG HEATER103424ILLUSTRATEDPARTSBREAKDOWNVariable Manually-ControlledModelsCGG2618NCGG3324NCGG3630N1820192625212127567829292510

25103424OWNER’S MANUALPARTS LISTVariable Manually-ControlledModelsCGG2618NCGG3324NCGG3630NThis list contains replaceable parts used in your heater. W

26UNVENTED NATURAL GAS LOG HEATER103424ILLUSTRATEDPARTSBREAKDOWNThermostat-Controlled ModelCGG3324NT56256789101188291312131415161817192426277-17-22922

27103424OWNER’S MANUALPARTS LISTThermostat-Controlled ModelCGG3324NTThis list contains replaceable parts used in your heater. When ordering parts, fol

LIMITED WARRANTYCOMFORT GLOW VENT-FREE NATURAL GAS LOG HEATERSDESA International warrants this product to be free from defects in materials and compon

3103424OWNER’S MANUALLOCAL CODESInstall and use heater with care. Follow alllocal codes. In the absence of local codes, usethe latest edition of The N

4UNVENTED NATURAL GAS LOG HEATER103424AIR FORCOMBUSTION ANDVENTILATIONToday’s homes are built more energy efficientthan ever. New materials, increased

5103424OWNER’S MANUALAIR FORCOMBUSTION ANDVENTILATIONContinuedDETERMINING FRESH-AIR FLOW FOR HEATER LOCATIONDetermining if You Have a Confined or Unco

6UNVENTED NATURAL GAS LOG HEATER103424AIR FORCOMBUSTION ANDVENTILATIONContinuedVENTILATION AIRVentilation Air From InsideBuildingThis fresh air would

7103424OWNER’S MANUALINSTALLATION WARNING: A qualified ser-vice person must install heater.Follow all local codes. WARNING: Before installingin a soli

8UNVENTED NATURAL GAS LOG HEATER103424Heat ResistantMaterial (A)INSTALLATIONContinuedMinimum NoncombustibleMaterial ClearancesIf Not Using MantelNote:

9103424OWNER’S MANUALMinimum Non-Combustible Material Minimum Non-Combustible Material Height Distances to Underside ofMantel Top of FireplaceOpeningU