SPECIFICATIONS
| SVYD18PRA | SVYD18NRA |
Btu (Variable) | 21,000/31,000 | 24,000/35,000 |
Type Gas | Propane/LP | Natural |
Ignition | Piezo | Piezo |
Pressure Manifold | 8" W.C. | 3.5" W.C. |
Inlet Gas Pressure (in. of water) |
| |
Maximum | 14" | 10.5" |
Minimum* | 11" | 5" |
Shipping Weight | 28 lbs. | 28 lbs. |
*For input adjustment
REPLACEMENT PARTS
Note: Use only original replacement parts. This will protect your warranty coverage for parts re- placed under warranty.
PARTS UNDER WARRANTY
Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA Heating Products’ Technical Service De- partment at
•your name and address
•model and serial numbers of your heater
•how heater was malfunctioning
•type of gas used (propane/LP or natural gas)
•purchase date
Usually, we will ask you to return the 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 Heating Products at
•model number of your heater
•the replacement part number
WIRING DIAGRAM
Note: For proper operation of optional accesso- ries, the wires from the switch to the control must be connected exactly as shown.
AUTO
OFF
ON
Thermopile
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 (propane/LP only)
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 Heating Products’ Technical Service Department at
You can also visit DESA Heating Products’ tech- nical services web site at www.desatech.com.
26 | www.desatech.com |
