Instruction/ maintenance manual of the product WMH26TNB Vanguard Heating
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VMH26TPB VMH26TNB 14,000 to 26,000 Btu/Hr with Thermostat ® WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. — Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 2 IMPORTANT: Read this owner ’ s manual carefully and completely before trying to assemble, operate, or ser- vice this fireplace.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 3 3 1. This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases. 2.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 4 ASSEMBL Y WARNING: Always have branch support and screen in place before operating fireplace. This pre- vents excessive temperatures on fireplace surfaces.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 5 5 Figure 4 - Assembling Hood Hood Tabs Hood Louver Hood Tab Baffle Sheet Metal Screw Firebox Top Assembling Hood 1. Locate four black phillips sheet metal screws from the hard- ware packet.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 6 AIR FOR COMBUSTION AND VENTILA TION Continued Confined and Unconfined Space The National Fuel Gas Code, ANSI Z223.1.3/ NFPA 54 defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 7 7 Figure 6 - Ventilation Air from Outdoors Shown with Optional Mantel Outlet Air Ventilated Attic.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 8 You can recess firebox into the wall. You can also position fireplace in the optional cabinet or corner mantels. IMPORTANT: Only use optional cabinet or corner mantels specified in this manual.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 9 9 INST ALLA TION Continued 1. Frame in rough opening. Use dimensions shown in Figure 9 for the rough opening. If installing in a corner , use dimensions shown in Figure 10 for the rough opening.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 10 INST ALLA TION Continued Mantel Clearances for Built-In Installation If placing mantel above built-in fireplace, you must meet minimum clearance between mantel shelf and top of fireplace opening.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 11 11 Figure 13 - Attaching Brass Trim to Fireplace Figure 14 - Attaching Wood Base to Floor 5. Firmly snap brass trim kit on shoulder screws. Shoulder screws are located on fireplace cabinet (see Figure 13).
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 12 3 2 1 3. Note the wire locations on back of AUTO/OFF/ON switch. The terminals on back of switch are numbered 1, 2, and 3. Carefully remove red wire from terminal 1 and blue wire from terminal 3.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 13 13 3 2 1 Figure 19 - Installing Switch Plate to Valve Cover Shield Switch Plate Screw Valve Cover Shield INST ALLA TION Continued 9. Install the switch plate on the valve cover shield with 2 #10 screws provided (see Figure 18, page 12).
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 14 CONNECTING TO GAS SUPPLY WARNING: A qualified service person must con- nect fireplace to gas supply. Follow all local codes. CAUTION: Never connect propane/LP fireplace directly to the propane/LP supply.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 15 15 We recommend that you install a sediment trap in supply line as shown in Figure 24. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 16 ON POSITION OFF POSITION Pressure Testing Gas Supply Piping System Test Pressures In Excess Of 1/2 PSIG (3.5 kPa) 1. Disconnect appliance with its appliance main gas valve (control valve) and equipment shutoff valve from gas supply piping.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 17 17 LIGHTING INSTRUCTIONS Ignitor Button Figure 30 - Control Knob In The OFF Position Control Knob WARNING: You must operate this fireplace with the fireplace screen in place.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 18 TO TURN OFF GAS TO APPLIANCE The thermostatic control used on this fireplace differs from standard thermostats. Standard thermostats simply turn on and off the burner.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 19 19 BURNER FLAME PATTERN Figure 35 shows a correct burner flame pattern. Figure 36 shows an incorrect burner flame pattern. The incorrect burner flame pattern shows sporadic, irregular flame tipping.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 20 TROUBLESHOOTING WARNING: Turn off and unplug fireplace and let cool before servic- ing. Only a qualified service person should service and repair fireplace.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 21 21 REMEDY 1. Clean burner (see Cleaning and Mainte- nance , page 19) or replace burner orifice 2. Contact local propane/LP or natural gas company 1.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 22 TROUBLESHOOTING Continued WARNING: If you smell gas • Shut off gas supply. • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 23 23 TECHNICAL SER VICE You may have further questions about installation, operation, or troubleshooting. If so, contact DESA Heating Products’ Technical Service Department at 1-866-672-6040.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 24 ILLUSTRA TED P ARTS BREAKDOWN MODELS VMH26TPB (Shown) AND VMH26TNB 12 23 29 40 32 36 38 13 7 8 3.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 25 25 P ARTS LIST This list contains replaceable parts used in your fireplace. When ordering parts, fol- low the instructions listed under Replace- ment Parts on page 23 of this manual.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 26 ACCESSORIES Purchase these fireplace accessories from your local dealer. If they cannot supply these accessories call DESA Heating Products’ Sales Department at 1-866-672-6040 for referral information.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 27 27 1. Where will the product be used? ❍ Living/F amily Room ❍ Office/W arehouse ❍ Utility Shed/Outbuilding ❍ Garage ❍ Bedroom ❍ Bathroom ❍ Other 2.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 28 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 Postage Required T APE T APE.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 29 29 NOTES _______________________________________________________________________________________.
111043-01A For more information, visit www.desatech.com For more information, visit www.desatech.com 30 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 www.
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