Save this manual for future reference.OWNER’S OPERATION AND INSTALLATION MANUALVENT-FREE NATURAL GASMINI-HEARTH® HEATERVMH3000TNA15,000 to 30,000 Btu/

10107097NATURAL GAS RESIDENTIAL HEATERS®For more information, visit www.desatech.comINSTALLATIONContinuedFigure 12 - Folding AnchorFigure 13 - Popping

11107097OWNER’S MANUALFor more information, visit www.desatech.comINSTALLATIONContinuedContinuedFigure 16 - Attaching Heater to HearthBaseFigure 17- P

12107097NATURAL GAS RESIDENTIAL HEATERS®For more information, visit www.desatech.comINSTALLATIONContinuedC. MOUNTING HEATER TOOPTIONAL MANTELSee Instr

13107097OWNER’S MANUALFor more information, visit www.desatech.comPressure Testing Gas SupplyPiping SystemTest Pressures In Excess Of 1/2 PSIG(3.5 kPa

14107097NATURAL GAS RESIDENTIAL HEATERS®For more information, visit www.desatech.comOPERATINGHEATERTO TURN OFF GASTO APPLIANCEPilot BurnerThermocouple

15107097OWNER’S MANUALFor more information, visit www.desatech.comOPERATINGHEATERContinuedTHERMOSTATCONTROL OPERATIONThe thermostatic control used on

16107097NATURAL GAS RESIDENTIAL HEATERS®For more information, visit www.desatech.comTROUBLESHOOTING WARNING: Turn off and un-plug heater and let cool

17107097OWNER’S MANUALFor more information, visit www.desatech.comREMEDY1. Clean burner (see Cleaning and Mainte-nance, page 19) or replace burner ori

18107097NATURAL GAS RESIDENTIAL HEATERS®For more information, visit www.desatech.comTROUBLESHOOTINGContinued WARNING: If you smell gas• Shut off gas s

19107097OWNER’S MANUALFor more information, visit www.desatech.comCLEANING ANDMAINTENANCECABINETAir Passageways• Use a vacuum cleaner or pressurized a

2107097NATURAL GAS RESIDENTIAL HEATERS®For more information, visit www.desatech.comLOCAL CODESInstall and use heater with care. Follow alllocal codes.

20107097NATURAL GAS RESIDENTIAL HEATERS®For more information, visit www.desatech.comILLUSTRATEDPARTSBREAKDOWNVMH3000TNA1291010121314151719202324256266

21107097OWNER’S MANUALFor more information, visit www.desatech.comPARTS LISTVMH3000TNAThis list contains replaceable parts used in your heater. When o

22107097NATURAL GAS RESIDENTIAL HEATERS®For more information, visit www.desatech.comTECHNICALSERVICEYou may have further questions about in-stallation

23107097OWNER’S MANUALFor more information, visit www.desatech.comPREMIER MANTELUnfinished - GM903U SeriesFinished - GM902F SeriesWhite Lacquer Finish

KEEP THIS WARRANTYWARRANTY INFORMATIONModel ________________________________Serial No. _____________________________Date Purchased ___________________

3107097OWNER’S MANUALFor more information, visit www.desatech.comPRODUCTFEATURESSAFETY DEVICEThis heater has a pilot with an OxygenDepletion Sensing (

4107097NATURAL GAS RESIDENTIAL HEATERS®For more information, visit www.desatech.comTruss-HeadScrewNutFront PanelFigure 4 - Attaching Brass Front Trim

5107097OWNER’S MANUALFor more information, visit www.desatech.comToday’s homes are built more energy effi-cient than ever. New materials, increasedins

6107097NATURAL GAS RESIDENTIAL HEATERS®For more information, visit www.desatech.comDETERMINING FRESH-AIR FLOW FOR HEATER LOCATIONDetermining if You Ha

7107097OWNER’S MANUALFor more information, visit www.desatech.comVENTILATION AIRVentilation Air From InsideBuildingThis fresh air would come from an a

8107097NATURAL GAS RESIDENTIAL HEATERS®For more information, visit www.desatech.com3"FLOORCEILING36"Minimum6"MinimumFromSides OfHeaterL

9107097OWNER’S MANUALFor more information, visit www.desatech.comThermostatSensing BulbClampTHERMOSTAT SENSINGBULBThe thermostat sensing bulb has been