www.desatech.com
120163-01A
21
AUTO
OFF
ON
Thermopile
Figure 28 - Access to Pilot Air Inlet Hole
OFF PILOT ON
Pilot Air
Inlet Hole
Access to
Clean Pilot
CLEANING AND
MAINTENANCE
Continued
WIRING DIAGRAM
SPECIFICATIONS
CSM2618NR
• Rating (Variable): 20,000/30,000 Btu/Hr
• Gas Type: Natural Gas Only
• Ignition: Piezo
• Manifold Pressure: 3.5" - 1.6" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 10.5" W.C., Minimum* 5.0" W.C.
CSM2618PR
• Rating (Variable): 23,000/30,000 Btu/Hr
• Gas Type: Propane/LP Only
• Ignition: Piezo
• Manifold Pressure: 10" - 6.3" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 14" W.C., Minimum* 11" W.C.
CSM3624NR
• Rating (Variable): 24,000/36,000 Btu/Hr
• Gas Type: Natural Gas Only
• Ignition: Piezo
• Manifold Pressure: 3.5" - 1.6" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 10.5" W.C., Minimum* 5.0" W.C.
CSM3624PR
• Rating (Variable): 26,000/34,000 Btu/Hr
• Gas Type: Propane/LP Only
• Ignition: Piezo
• Manifold Pressure: 10" - 6.3" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 14" W.C., Minimum* 11" W.C.
* For purpose of input adjustment
Manufactured by: DESA, 1769 E. Lawrence St.,
Russellville, AL 35653
Note:
This appliance has been designed-certified
by ANS Z21.11.2b-2004 Unvented Room Heaters
and ANS Z21.60-2003.
Decorative Gas Appliances for Installation in Solid
Fuel Burning Fireplaces by OMNI Test Labora-
tories.
SERVICE HINTS
When Gas Pressure Is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
• propane/LP gas supply may be low
You may feel your gas pressure is too low. If so, con-
tact your local propane/LP or natural gas supplier.
TECHNICAL SERVICE
You may have further questions about installation,
operation or troubleshooting. If so, contact DESA
Technical Service Department at 1-866-672-6040.
When calling please have your model and serial
numbers of your heater ready.
You can also visit DESA technical services web
site at
www.desatech.com
.
