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20
104352
UNVENTED NATURAL GAS FIREPLACE
DESA INTERNATIONAL
SPECIFICATIONS
VYGF33NR Remote Ready
Btu (Variable)
20,000/30,000
Type Gas
Natural Gas Only
Ignition
Piezo
Pressure Manifold
3.5" W.C.
Inlet Gas Pressure (in. of water)
Maximum
10.5"
Minimum*
5"
Shipping Weight
122 lbs.
* For input adjustment
TECHNICAL
SERVICE
You may have further questions about in-
stallation, operation, or troubleshooting.
If so, contact DESA International’s Techni-
cal Service Department at
1-800-DESA LOG (1-800-337-2564).
SERVICE HINTS
When gas pressure is too low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
When gas quality is bad
• pilot will not stay lit
• burners will produce flames and soot
• heater will backfire when lit
You may feel your gas pressure is too low or
gas quality is bad. If so, contact your local
natural gas supplier.
AUT
O
OFF
ON
Thermopile
WIRING DIAGRAM
Note
: For proper operation of optional ac-
cessories, the wires from the switch to the
control must be connected exactly as shown.