14
105705
VENTED TYPE DECORATIVE APPLIANCE
VGL850 Series
®
N.O. WALL SWITCH
(SUPPLIED)
DO NOT
CONNECT
TO 120V
USE ONLY CLASS 2 THERMOSTAT
WIRE 18 GA. RED/WHITE
HIGHER RATING OR EQUIVALENT
(HEAT LIMIT
SWITCH)
INCOMING
MAIN GAS
SUPPLY
N.C.SW
TH
TP
TH/TP
CONTROL VALVE
ROBERT SHAW
TECHNICAL
SERVICE
You may have further questions about in-
stallation, operation, or troubleshooting.
If so, contact DESA International’s Techni-
cal Service Department at 1-800-323-5190.
You can also visit DESA International’s
Technical 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
• propane/LP gas supply may be low
When Gas Quality Is Bad
• pilot will not stay lit
• burner will produce flames and soot
• fireplace will backfire when lit
You may feel your gas pressure is too low or
gas quality is bad. If so, contact your local
propane/LP gas supplier.
WIRING DIAGRAM
Pilot
Burner
Pilot Gas
Line
Thermopile
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 International’s Technical Ser-
vice Department at 1-800-323-5190 for re-
ferral information.
When calling DESA International, have
ready
• your name
• your address
• model and serial numbers of your fire-
place
• how fireplace was malfunctioning
• type of gas used (propane/LP or natural
gas)
• purchase date
Usually, we will ask you to return the defec-
tive 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 International’s Parts Department
at 1-800-972-7879 for referral information.
When calling DESA International, have
ready
• model number of your fireplace
• the replacement part number
REPLACEMENT
PARTS
