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cleaninG and
mainTenance
Continued
Burner
Tube
Pilot
Assembly
Pilot Air
Inlet Hole
Figure 34 - Pilot Inlet Air Hole
LOGS
• If you remove logs for cleaning, refer to Install-
ing Logs, pages 16, to properly replace logs.
• Replace log(s) if broken or chipped (dime-sized
or larger).
WirinG diaGram
CAUTION: Label all wires
prior to disconnection when
servicing controls. Wiring errors
can cause improper and dan-
gerous operation. Verify proper
operation after servicing.
Variable
Fan Switch
1
Off
110/115
V.A.C.
Black
Green
White
119303-01A
Ports/
Slots
Fan Switch
(N.O.)
Black
2
Blue
On
Red
Blower
Motor
www.desatech.com
sPeciFicaTions
Model VSGF28NTA
• Rating (Variable)
• Type Gas
• Ignition
• Pressure Manifold
• Inlet Gas Pressure (in. of water)
Maximum
Minimum*
• Shipping Weight
* For input adjustment
Model VSGF28PTA
• Rating (Variable)
• Type Gas
• Ignition
• Pressure Manifold
• Inlet Gas Pressure (in. of water)
Maximum
Minimum*
• Shipping Weight
* For input adjustment
21,000/28,000 Btu/Hr
Natural Gas
Piezo
3.4" W.C.
10.5"
5"
100 lbs.
23,000/28,000 Btu/Hr
Propane/LP
Piezo
7.9" W.C.
14"
11"
100 lbs.
1
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