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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.
VN1800IT VN2550IT
BTU (Variable) 6,600-18,000 7,000-25,500
Type Gas Natural Only Natural Only
Ignition Piezo Piezo
Pressure Regulator Setting 6" W.C. 6" W.C.
Inlet Gas Pressure (in. of water)
Maximum 10.5" 10.5"
Minimum 7" 7"
Dimensions, Inches (H x W x D)
Heater 23.5 x 18.5 x 8 23.5 x 25.9 x 8
Carton 25.8 x 21.3 x 10.1 25.8 x 28.7 x 10.1
Weight (pounds)
Heater 24 32
Shipping 29 38
SPECIFICATIONS
VN1800C VN3000C
BTU (Variable) 6,600/12,000/18,000 6,600/18,000/30,000
Type Gas Natural Only Natural Only
Ignition Piezo Piezo
Pressure Regulator Setting 6" W.C. 6" W.C.
Inlet Gas Pressure (in. of water)
Maximum 10.5" 10.5"
Minimum 7" 7"
Dimensions, Inches (H x W x D)
Heater 23.5 x 18.5 x 8 23.5 x 25.9 x 8
Carton 25.8 x 21.3 x 10.1 25.8 x 28.7 x 10.1
Weight (pounds)
Heater 22 30
Shipping 27 36
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.
SERVICE
HINTS
When gas pressure is too low
• pilot will not stay lit
• burner(s) will have delayed ignition
• heater will not produce specified heat
When gas quality is bad
• pilot will not stay lit
• burner(s) 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.