Wiring Diagram
Note: For proper operation of optional accessories, the wires from the switch to the control must be connected exactly as shown.
AUTO
OFF
ON
Thermopile
Specifications
VYGF33NRC and FPVF33NRA
• Rating: 20,000/30,000
• Gas Type: Natural Gas
• Ignition: Piezo
• Pressure Manifold: 3.5" W.C.
• Inlet Gas Pressure (in. of water): Maximum - 10.5", Minimum* - 5"
• Shipping Weight: 122 lbs.
VYGF33PRC and FPVF33PRA
• Rating: 20,000/33,000
• Gas Type: Propane/LP Gas
• Ignition: Piezo
• Pressure Manifold: 8.0" W.C.
• Inlet Gas Pressure (in. of water): Maximum - 14", Minimum* - 11"
• Shipping Weight: 122 lbs. * For input adjustment
Replacement Parts
Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty.
Parts Under Warranty
Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA Heating Products’ Technical Service Department at
•your name and address
•model and serial numbers of your fireplace
•how fireplace was malfunctioning
•type of gas used (propane/LP or natural gas)
•purchase date
Usually, we will ask you to return the part to the factory.
Parts Not Under Warranty
Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA Heating Products at
•model number of your fireplace
•the replacement part number
Technical Service
You may have further questions about installation, operation or troubleshooting. If so, contact DESA Heating Products’Technical Service Department at
You can also visit DESA Heating Products’techni- cal services web site at www.desatech.com.
Service Hints
When Gas Pressure Is Too Low
• pilot will not stay lit
• burner will have delayed ignition
• fireplace will not produce specified heat
• for propane/LP unit, propane/LP gas supply may be low
You may feel your gas pressure is too low. If so, contact your local gas supplier.
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