www.desatech.com
119303-01A
1
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).
Figure 34 - Pilot Inlet Air Hole
Burner
Tube
Pilot
Assembly
Pilot Air
Inlet Hole
Ports/
Slots
cleaninG and
mainTenance
Continued
sPeciFicaTions
Model VSGF28NTA
• Rating (Variable)
21,000/28,000 Btu/Hr
• Type Gas
Natural Gas
• Ignition
Piezo
• Pressure Manifold 3.4" W.C.
• Inlet Gas Pressure (in. of water)
Maximum
10.5"
Minimum*
5"
• Shipping Weight
100 lbs.
* For input adjustment
Model VSGF28PTA
• Rating (Variable)
23,000/28,000 Btu/Hr
• Type Gas
Propane/LP
• Ignition
Piezo
• Pressure Manifold 7.9" W.C.
• Inlet Gas Pressure (in. of water)
Maximum
14"
Minimum*
11"
• Shipping Weight
100 lbs.
* For input adjustment
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.
Red
Variable
Fan Switch
Fan Switch
(N.O.)
Green
White
On
110/115
V.A.C.
Blower
Motor
Black
Off
1
2
Black
Blue