Desa CGN18B User Manual Page 1

Save this manual for future reference.BLUE-FLAME VENT-FREENATURAL GAS HEATEROWNER’S OPERATION AND INSTALLATION MANUALModel: RN30B and CGN18BWARNING: I

10100096WARNING ICON G 001 CAUTIONIf you install the heater in a home garage• heater pilot and burner must be at least 18 inches above floor• locate h

11100096INSTALLING HEATER TO WALLMounting BracketThe mounting bracket is located on back panel of heater. It has been taped there forshipping. Remove

12100096Marking Screw Locations1. Tape mounting bracket to wall where heater will be located. Make sure mount-ing bracket is level.Attaching Mounting

131000964. For thin walls (1/2" or less), insert red key into wall anchor. Push red key to“pop” open anchor wings. IMPORTANT: Do not hammer key!F

14100096CONNECTINGTO GASSUPPLYNOTICEA qualified service person must connect heater to gas supply.Follow all local codes.WARNING ICON G 001 WARNINGNeve

15100096IMPORTANT: Hold pressure regulator with wrench when connecting it to gas pipingand/or fittings.PressureRegulatorTee JointReducerBushing to1/8

161000964. Check all joints of gas supply piping system. Apply mixture of liquid soap andwater to gas joints. Bubbles forming show a leak.5. Correct a

17100096OFFHIGHPILOTLOWIGNITOROPERATINGHEATERFOR YOUR SAFETY READ BEFORE LIGHTINGA. This appliance has a pilot which must be lighted by hand. When lig

181000967. Keep control knob pressed in for 30 seconds after lighting pilot. After 30seconds, release control knob.Note: If pilot goes out, repeat ste

19100096TO TURN OFF GAS TO APPLIANCEFigure 18 - Incorrect Pilot Flame PatternGRH/OV 010BAD PILOTPilot BurnerThermocoupleINSPECTINGBURNERCheck pilot fl

2100096CONTENTSSECTION PAGESafety Information...2Product Identification ...

201000961/2 HEAT SHIELD OR GLASS HEIGHTAT HIGH POSITIONINCORRECT FLAME PATTERNAT HIGH POSITIONIf pilot flame pattern is incorrect, as shown in Figure

21100096CLEANINGANDMAINTENANCEWARNING ICON G 001 WARNINGTurn off heater and let cool before cleaning.WARNING ICON G 001 CAUTIONYou must keep control a

22100096TROUBLE-SHOOTINGContinuedOBSERVEDPROBLEMWhen ignitor buttonis pressed, there isspark at ODS/pilotbut no ignitionODS/pilot lights butflame goes

23100096TROUBLE-SHOOTINGContinuedOBSERVEDPROBLEMBurner does not lightafter ODS/pilot is lit(continued from page22)Delayed ignition ofburnerBurner back

24100096WARNING ICON G 001 WARNINGIf you smell gas• Shut off gas supply.• Do not try to light any appliance.• Do not touch any electrical switch; do n

25100096TECHNICALSERVICEYou may have further questions about installation, operation, or troubleshooting.If so, contact DESA International’s Technical

26100096REPLACEMENTPARTSNote: Use only original replacement parts. This will protect your warranty coveragefor parts replaced under warranty.Parts Und

27100096ACCESSORIESPurchase these heater accessories from your local dealer. If they can not supplythese accessories, either contact your nearest Part

2810009612345678891011121314151719212223242027261828162510-110-2ODS/Pilot

29100096RN30BPARTS LISTThis list contains replaceable parts used in your heater. When ordering parts, followthe instructions listed under Replacement

3100096SAFETYINFORMATIONContinuedWARNING ICON G 001 WARNINGS ContinuedWARNING: Any change to this heater or its controls can be dangerous.1. Use only

3010009612-112-2ODS/Pilot12345678910101112131415161719272123242526222928203018

31100096CGN18BPARTS LISTThis list contains replaceable parts used in your heater. When ordering parts, followthe instructions listed under Replacement

LIMITED WARRANTYVENT-FREE HEATERSDESA International warrants this product to be free from defects in materials and components for one (1) year fromthe

4100096PRODUCTIDENTIFICATIONFigure 1 - Vent-Free Natural Gas HeaterIgnitor Button Control KnobHeaterCabinetFrontPanelHeat Shield(RN30B) orGlass Panel(

5100096FRESH AIRFORCOMBUSTIONANDVENTILATIONWARNING ICON G 001 WARNINGThis heater must have fresh air for proper operation. If not, poorfuel combustion

6100096FRESH AIRFORCOMBUSTIONANDVENTILATIONContinuedWARNING ICON G001 WARNINGYou must provide additional ventilation air in a confined space.DETERMINI

7100096FRESH AIRFORCOMBUSTIONANDVENTILATIONContinuedVENTILATION AIRVentilation Air From Inside BuildingThis fresh air would come from an adjoining unc

8100096FRESH AIRFORCOMBUSTIONANDVENTILATIONContinuedVENTILATION AIR (Continued)Ventilation Air From OutdoorsProvide extra fresh air by using ventilati

9100096INSTALLINGTO WALLNOTICEA qualified service person must install heater. Follow all local codes.CHECK GAS TYPEUse only natural gas. If your gas s