Desa FLAME-MAX UNVENTED (VENT-FREE) NATURAL GAS LOG HEA User Manual

Save this manual for future reference.DESA INTERNATIONALUNVENTED (VENT-FREE)NATURAL GAS LOG HEATERWARNING: If the information in thismanual is not fol

10103309LOG SIZING REQUIREMENTSLog Minimum Firebox SizeSize Height Depth Front Width18" 17" 14" 20"24" 17" 14" 26&q

11103309INSTALLINGContinuedContinuedNOTICEManual control heaters may be used as a vented product. If so,you must always run heater with chimney flue d

12103309INSTALLINGContinuedMinimum Non Combustible Material ClearancesIf Using MantelYou must have non combustible material(s) above the fireplace ope

13103309INSTALLINGContinuedFloor ClearancesA. If installing appliance on the floor level, you must maintain the minimumdistance of 14" to combust

14103309INSTALLINGContinuedINSTALLING DAMPER CLAMP ACCESSORY FORVENTED OPERATIONNote: When used as a vented heater, appliance must be installed only i

15103309INSTALLINGContinuedINSTALLING HEATER BASE ASSEMBLYWARNING ICON G 001 WARNINGYou must secure this heater to fireplace floor. If not, heater wil

16103309INSTALLINGContinuedHeater GasRegulatorFlexible Gas Hose (ifallowed by local codes)Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regula

17103309INSTALLINGContinuedCONNECTING TO GAS SUPPLYNOTICEA qualified service person must connect heater to gas supply.Follow all local codes.Installat

18103309Tee JointPipeNippleCap3" MinimumSedimentTrapGasRegulatorFromGas Meter(5" W.C.** to10.5" W.C.Pressure)A.G.A. Design-CertifiedMan

19103309Test Pressures Equal To or Less Than 1/2 PSIG1. Close manual shutoff valve (see Figure 14).2. Pressurize supply piping system by either using

2103309CONTENTSSECTION PAGESAFETYINFORMATIONWARNING ICON G 001 WARNINGSIMPORTANT: Read this owner’s manual carefully and completely beforetrying to as

20103309INSTALLINGContinuedWARNING ICON G 001 WARNINGFailure to position the parts in accordance with these diagrams or failureto use only parts speci

21103309INSTALLINGContinuedFor Premium ModelsIt is very important to install the logs exactly as instructed. Do not modify logs.Only use logs supplied

22103309OPERATINGHEATERFOR YOUR SAFETY READ BEFORE LIGHTING WARNINGIf you do not follow these instructions exactly, a fire or explosion mayresult caus

23103309WARNING ICON G 001 WARNINGDo not operate heater between PILOT and HIGH positions.WARNING ICON G 001 CAUTIONDo not try to adjust heating levels

24103309OPERATINGHEATERContinuedTO TURN OFF GAS TO APPLIANCEShutting Off Heater1. Press in and turn control knob clockwise Clockwise to the HIGH posit

25103309CLEANINGANDMAINTENANCEWARNING ICON G 001 WARNINGTurn off heater and let cool before cleaning.WARNING ICON G 001 CAUTIONYou must keep control a

26103309TROUBLE-SHOOTINGContinuedREMEDY1. Turn on gas supply oropen manual shutoffvalve2. Turn control knob toPILOT position3. Press in control knobwh

27103309OBSERVEDPROBLEMBurner does not lightafter ODS/pilot is litDelayed ignitionburnerBurner backfiringduring combustionSlight smoke or odorduring i

28103309TROUBLE-SHOOTINGContinued WARNINGIf you smell gas• Shut off gas supply.• Do not try to light any appliance.• Do not touch any electrical switc

29103309TECHNICALSERVICEYou may have further questions about installation, operation, or troubleshooting.If so, contact DESA International’s Technical

3103309SAFETYINFORMATIONContinuedWARNING ICON G 001 WARNINGS ContinuedWARNING: Any change to this heater or its controls can be dangerous.1. This appl

30103309ILLUSTRATEDPARTSBREAKDOWNFlame-Max StandardOak Log ModelsVYS18N and VYS24N41231221101121721568915141619221813191720-220-1201823

31103309PARTS LISTThis list contains replaceable parts used in your heater. When ordering parts, followthe instructions listed under Replacement Parts

32103309ILLUSTRATEDPARTSBREAKDOWNFlame-Max Premium Oakand Birch Log ModelsVYD24N and VYBD24N521111213 218212167109161517192181419320-220-1201841A1B

33103309KEY PART NUMBER FORNO. VYD24N VYBD24N DESCRIPTION QTY.1A 103334-01 – Log, Premium Oak 11B – 103335-01 Log, Premium Birch 12 098276-01 098276-0

34103309ACCESSORIESPurchase these heater accessories from your local dealer. If they can not supplythese accessories, call DESA International’s Parts

35103309NOTES_________________________________________________________________________________________________________________________________________

LIMITED WARRANTYVENT-FREE NATURAL GAS LOG HEATERSDESA International warrants this product to be free from defects in materials and components for thre

4103309PRODUCTIDENTIFICATIONFigure 1 - Product IdentificationControl KnobBack LogBase AssemblyPiezo IgnitorBurnerCrossover LogFront Log Flame-MaxSt

5103309LOCAL CODESInstall and use heater with care. Follow all local codes. In the absence of localcodes, use the latest edition of The National Fuel

6103309PROVIDING ADEQUATE VENTILATIONThe following is exerpts from National Fuel Gas Code. NFPA 54/ANSI Z223.1,Section 5.3, Air for Combustion and Ven

7103309AIR FORCOMBUSTIONANDVENTILATIONContinuedDETERMINING AIR FLOW FOR HEATER LOCATIONDetermining if You Have a Confined or Unconfined SpaceUse this

8103309AIR FORCOMBUSTIONANDVENTILATIONContinued WARNINGIf the area in which the heater may be operated is smaller thanthat defined as an unconfined sp

9103309INSTALLINGNOTICEA qualified service person must install heater. Follow all local codes. WARNINGBefore installing in a solid fuel burning firepl