Operating instructions
3
Installation Instructions and Owner’s Manual
Unvented Natural Gas Fired Room Heater
DANGER: Carbon monoxide poisoning may lead to 
death. 
Carbon Monoxide Poisoning:
Early signs of carbon monoxide poisoning resemble the 
u, with headaches, dizziness, or nausea. If you have 
these signs, the heater may not be working properly. 
Get fresh air at once! Have heater serviced. Some 
people are more affected by carbon monoxide than oth-
ers. These include pregnant women, persons with heart 
or lung disease or anemia, those under the inuence of 
alcohol, and those at high altitudes.
Natural Gas:
Raw natural gas is odorless. An odor making agent is 
added to natural gas, which helps you detect a natural 
gas leak. However the odor added to natural gas can 
fade. So natural gas may be present even though no 
odor is detected. Make certain you read and under-
stand all warnings. Keep this manual for reference. It is 
your guide to safe and proper operation of this heater.
Product Features
Figure 1
PRECAUTIONS:
1.  BF-10NG and IR-10NG may be installed in a 
bedroom, but not a bathroom, or any place where a 
strong wind would shut down the appliance.
2.  This heater needs outside ventilation air to run 
properly. The Oxygen Depletion Sensor (ODS) 
safety shutoff system shuts down the heater if not 
enough fresh air is available. See Fresh Air for 
Combustion and Ventilation, page 4.
3.  Keep all air openings in heater clear, free of debris 
or any blockage. This will insure that enough air for 
proper combustion enters the heater.
4.  If heater shuts off, do not relight until you provide 
fresh, outside air. If heater keeps shutting off, it 
requires servicing.
5.  Turn off and let cool before servicing. Only a 
qualied service person should service and repair 
heater.
6.  Do not run heater:
•  Where ammable liquids or vapors are used or stored
•  During dusty conditions.
7.  Before using furniture polish, wax, carpet cleaner 
or similar products, turn heater off. If heated the 
vapors from these products may create a white 
powder residue within burner box or on adjacent 
walls or furniture.
8.  Do not use heater if any part has been underwater. 
Immediately call a qualied service technician to 
inspect the room heater and to replace any part of 
the control system and any gas control which has 
been underwater.
9.  Operating heater above elevations of 4,500 feet 
could cause pilot/ODS to shutdown heater.
10.  Always run heater with control knob in a locked po-
sition. Never set control knob between locked posi-
tions. Poor combustion and higher levels of carbon 
monoxide may result if control knob is left between 
locked positions.
Control Knob
Grill
Front Panel
Burners
Heater 
Cabinet
SPECIFICATIONS
IR10NG BF10NG
BTU (Available)  10,000  10,000 
Type of Gas  Natural Gas Only  Natural Gas Only 
Ignition  Piezo  Piezo 
Pressure Regulator Setting  4.5 Inches of Water  4.5 Inches of Water 
Inlet Gas Pressure (Maximum)  14 Inches of Water 
14 Inches of Water
Inlet Gas Pressure (Minimum)  7 Inches of Water 
7 Inches of Water 
Burners / Orice nozzles  2  1
Thermostatic Control  No  No
Clearances: inches (mm)     
  Top  36” (915cm)  36” (915cm) 
 Sides  6” (152cm)  6” (152cm) 
  Floor (min. to top of carpet)  2” (51cm)  2” (51cm) 
  Fabric / ammable objects  36” (915cm)  36” (915cm) 36” (915cm) 










