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TECHNICAL
SERVICE
You may have further questions about installation, operation, or troubleshooting.
If so, contact DESA International’s Technical Service Department at 1-800-323-5190.
CGN20T/CGN20TL
CGN30T/CGN30TL
20,000 Btu/Hr Models 30,000 Btu/Hr Models
Btu (Variable)
10,000/20,000
15,000/30,000
Type Gas
Natural Only
Natural Only
Ignition
Piezo
Piezo
Pressure Regulator Setting
3" W.C.
3" W.C.
Inlet Gas Pressure (in. of water)
Maximum
10.5"
10.5"
Minimum
4"
4"
Dimensions, Inches (H x W x D)
Heater
23.5 x 18.5 x 8.0
23.5 x 25.9 x 8.0
Carton
25.8 x 21.3 x 10.1
25.8 x 28.7 x 10.1
Weight (pounds)
Heater
22
30
Shipping
27
35
SPECIFICATIONS
SERVICE
HINTS
When gas pressure is too low
• pilot will not stay lit
• burner will have delayed ignition
• heater will not produce specified heat
When gas quality is bad
• pilot will not stay lit
• burner 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
PUBLICATIONS
You can purchase a service manual from the address listed on the back page of this
manual. Send a check for $5.00 payable to DESA International.