www.fmiproducts.com
110398-01F
23
AUTO
OFF
ON
Thermopile
WIRING DIAGRAM
Note: For proper operation of optional accessories, the wires from the switch to the control
must be connected exactly as shown.
TECHNICAL SERVICES
You may have further questions about instal
-
lation, 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
.
SPECIFICATIONS
FVFM27NR
• Rating (Variable): 20,000/39,000 Btu/Hr
• Gas Type: Natural Gas
• Ignition: Piezo
• Manifold Pressure: 3.5" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 10.5" W.C., Minimum* 5" W.C.
• Shipping Weight: 32 lbs.
FVFM27PR
• Rating (Variable): 20,000/39,000 Btu/Hr
• Gas Type: Propane/LP
• Ignition: Piezo
• Manifold Pressure: 8" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 14" W.C., Minimum* 11" W.C.
• Shipping Weight: 32 lbs.
* For input adjustment
REPLACEMENT PARTS
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.
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, contact your local natural or propane/LP
gas supplier.
Receiver
On
Off
Remote
Red
Red
White
White
Thermopile
Gas Control
TPTH
TH
TPTH TP