Desa-tech B Manuale Utente Pagina 1

Heater Sizes: 18,000 Btu/Hr Thermostat, and28,000 Btu/Hr Thermostat “B” Model HeatersSave this manual for future reference.BLUE FLAME VENT-FREE NATURA

10101808Figure 5 - Attaching Thermostat Sensing BulbClampThermostatSensing BulbFor convenience and efficiency, install heater• where there is easy acc

11101808INSTALLING HEATER TO WALLMounting BracketThe mounting bracket is located on back panel of heater. It has been taped there forshipping. Remove

12101808Marking Screw Locations1. Tape mounting bracket to wall where heater will be located. Make sure mount-ing bracket is level.28,000 Btu/Hr Model

131018084. 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

14101808CONNECTINGTO GASSUPPLYNOTICEA qualified service person must connect heater to gas supply.Follow all local codes.Typical Pipe Diameters18,000 B

15101808IMPORTANT: Hold pressure regulator with wrench when connecting it to gas pipingand/or fittings.PressureRegulatorTee JointReducerBushing to1/8

16101808ONPOSITIONOFFPOSITION4. Check all joints of gas supply piping system. Apply mixture of liquid soap andwater to gas joints. Bubbles forming sho

17101808OPERATINGHEATERFOR YOUR SAFETY READ BEFORE LIGHTINGA. This appliance has a pilot which must be lighted by hand. When lightingthe pilot, follow

181018084. Wait five (5) minutes to clear out any gas. Then smell for gas, includingnear the floor. If you smell gas, STOP! Follow “B” in the safety i

19101808TO TURN OFF GAS TO APPLIANCEOPERATINGHEATERShutting Off Heater1. Turn control knob clockwise Clockwise to the OFF position.2. Turn off all ele

2101808CONTENTSSECTION PAGESAFETYINFORMATIONWARNING ICON G 001 WARNINGSIMPORTANT: Read this owner’s manual carefully and completely beforetrying to as

20101808INSPECTINGBURNERCheck pilot flame pattern and burner flame pattern often.PILOT FLAME PATTERNFigure 18 shows a correct pilot flame pattern. Fig

211018081/2 GLASS HEIGHTINCORRECT FLAME PATTERNAT HIGH POSITIONIf pilot flame pattern is incorrect, as shown in Figure 19.• turn heater off (see To Tu

22101808CLEANINGANDMAINTENANCEODS/PILOT AND BURNER• Use a vacuum cleaner, pressurized air, or small, soft bristled brush to clean.CABINETAir Passagewa

23101808REMEDY1. Turn on gas supply oropen manual shutoffvalve2. Turn control knob toPILOT position3. Press in control knobwhile in PILOTposition4. Co

24101808TROUBLE-SHOOTINGContinuedOBSERVEDPROBLEMBurner does not lightafter ODS/pilot is litDelayed ignition ofburnerBurner backfiringduring combustion

25101808TROUBLE-SHOOTINGContinuedWARNING ICON G 001 WARNINGIf you smell gas• Shut off gas supply.• Do not try to light any appliance.• Do not touch an

26101808TECHNICALSERVICEYou may have further questions about installation, operation, or troubleshooting.If so, contact DESA International’s Technical

27101808Note: Use only original replacement parts. This will protect your warranty cover-age for parts replaced under warranty.Parts Under WarrantyCon

28101808123456789101011121314151617192021222324252627283031321829313012 ODS/Pilot Assembly12-112-2

29101808PARTS LISTThis list contains replaceable parts used in your heater. When ordering parts, followthe instructions listed under Replacement Parts

3101808SAFETYINFORMATIONContinuedWARNING ICON G 001 WARNINGS ContinuedWARNING: Any change to this heater or its controls can be dangerous.1. This appl

30101808ACCESSORIESPurchase these heater accessories from your local dealer. If they can not supplythese accessories, either contact your nearest Part

31101808NOTES_________________________________________________________________________________________________________________________________________

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

4101808PRODUCTIDENTIFICATIONLOCAL CODESInstall and use heater with care. Follow all local codes. In the absence of localcodes, use the latest edition

5101808FRESH AIRFORCOMBUSTIONANDVENTILATIONWARNING ICON G 001 WARNINGThis heater shall not be installed in a confined space unlessprovisions are provi

6101808FRESH AIRFORCOMBUSTIONANDVENTILATIONContinuedDETERMINING FRESH-AIR FLOW FOR HEATER LOCATIONDetermining if You Have a Confined or Unconfined Spa

7101808FRESH AIRFORCOMBUSTIONANDVENTILATIONContinuedOr Remove Door into Adjoining Room, Option 3Ventilation Grills Into Adjoining Room,Option 212"

8101808FRESH AIRFORCOMBUSTIONANDVENTILATIONContinuedFigure 3 - Ventilation Air from OutdoorsOutletAirVentilatedAttic OutletAirInletAirInlet AirVentila

9101808INSTALLINGTO WALLNOTICEA qualified service person must install heater. Follow all local codes.CHECK GAS TYPEUse only natural gas. If your gas s