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104306
OWNER’S MANUAL
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).
SPECIFICATIONS
CGD3924NR/CGB3924NR/CGB3930NR
Btu (Variable)
20,000/39,000
Type Gas
Natural Gas Only
Ignition
Piezo
Manifold Pressure
3.5" W.C.
Inlet Gas
Pressure (in. of water)
Maximum
10.5"
Shipping Weight
30 lbs.
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.
SERVICE HINTS
WIRING DIAGRAM
Receiver
White
On
Off
Remote
Red
Red
White
Thermopile
Gas Control
TPTH
TH
TPTH TP
ACCESSORIES
Purchase these fireplace accessories from
your local dealer. If they can not supply
these accessories, either contact your near-
est Parts Central (see page 28) or call DESA
International’s Sales Department at 1-800-
972-7879 for referral information. You can
also write to the address listed on the back
page of this manual.
MANUAL SHUTOFF
VALVE - GA5010
Manual shutoff valve with 1/8" NPT tap.
Fits 1/2" NPT pipe.
FIREPLACE HOOD
BLACK - GA6050
BRASS - GA6052
ANTIQUE BRASS - GA6053
Helps deflect heat away from mantel or wall
above fireplace.
LAVA ROCK - GA6060
(Not Shown)
Order when additional rock is desired. (3 lb.
bag)
