www.fmiproducts.com
113084-01L
21
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.
Contact authorized dealers of this product.
If they can’t supply original replacement
part(s), call FMI PRODUCTS, LLC at
1-866-328-4537.
When calling, 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.
TECHNICAL SERVICE
You may have further questions about
installation, operation, or troubleshooting.
If so, contact FMI PRODUCTS, LLC at
1-866-328-4537. When calling please have
your model and serial numbers of your
heater ready.
You can also visit our web site at
www.fmiproducts.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.
