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Models H18PB
• Rating (Variable): 16,000/23,000 Btu/Hr
• Gas Type: Propane/LP
• Ignition: Piezo
• Manifold Pressure: 8.0" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 14" W.C., Minimum 11"* W.C.
• Shipping Weight: 27 lbs.
Models H18NB
• Rating (Variable): 17,000/24,000 Btu/Hr
• Gas Type: Natural
• Ignition: Piezo
• Manifold Pressure: 3.0" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 10.5" W.C., Minimum 5"* W.C.
• Shipping Weight: 27 lbs.
*For the purpose of input adjustment.
TECHNICAL SERVICE
You may have further questions about installa-
tion, 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.
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.
124465-01B
SPECIFICATIONS
REPLACEMENT PARTS
www.fmiproducts.com
Models H24PB
• Rating (Variable): 16,000/26,000 Btu/Hr
• Gas Type: Propane/LP
• Ignition: Piezo
• Manifold Pressure: 8.0" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 14" W.C., Minimum 11"* W.C.
• Shipping Weight: 27 lbs.
Models H24NB
• Rating (Variable): 17,000/26,000 Btu/Hr
• Gas Type: Natural
• Ignition: Piezo
• Manifold Pressure: 3.0" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 10.5" W.C., Minimum 5"* W.C.
• Shipping Weight: 27 lbs.
*For the purpose of input adjustment.
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.
When calling, have ready:
• your name
• your 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.
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