www.desatech.com
113084-01J
26
AUTO
OFF
ON
Thermopile
SPECIFICATIONS
REPLACEMENT PARTS
SVYD18PRA
• Rating: 21,000/31,000 Btu/hr (Variable)
• Gas Type: Propane/LP
• Ignition: Piezo
• Pressure Manifold: 8" W.C.
• Inlet Gas Pressure (in. of water):
Maximum - 14" W.C., Minimum - 11" W.C.
• Shipping Weight: 28 lbs.
SVYD18NRA
• Rating: 24,000/35,000 Btu/hr (Variable)
• Gas Type: Natural
• Ignition: Piezo
• Pressure Manifold: 3.5" WC
• Inlet Gas Pressure (in. of water):
Maximum - 10.5" W.C., Minimum - 5" W.C.
• Shipping Weight: 28 lbs.
*
For purposes of input adjustment
WIRING DIAGRAM
Note: For proper operation of optional accessories, the wires from the switch to the control
must be connected exactly as shown.
Note: Use only original replacement parts.
This will protect your warranty coverage for
parts replaced under warranty.
PARTS UNDER WARRANTY
Contact authorized dealers of this product. If
they can’t supply original replacement part(s),
call DESA Heating, LLC at 1-866-672-6040.
When calling DESA Heating, LLC, have
ready:
• your name
• your address
• model and serial numbers of your heater
• how heater was malfunctioning
• 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, LLC at 1-866-672-6040 for
referral information. A list of authorized dealers
can be found by visiting
www.desatech.com.
When calling DESA Heating, LLC, have
ready:
• model and serial numbers of your heater
• the replacement part number
TECHNICAL SERVICE
You may have further questions about installa
-
tion, operation, or troubleshooting. If so, con
-
tact DESA Heating, LLC at 1-866-672-6040.
When calling please have your model and
serial numbers of your heater ready.
You can also visit DESA Heating, LLC’s web
site at
www.desatech.com
.
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 (pro
-
pane/LP only)
You may feel your gas pressure is too low. If
so, contact your local propane/LP or natural
gas supplier.
