3
Installation Instructions and Owner’s Manual
Unvented Natural Gas Vent Free Room Heaters
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.
DANGER
: Carbon monoxide poisoning may lead to
death.
Carbon Monoxide Poisoning:
Early signs of carbon monoxide poisoning resemble the
flu, 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 influence 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.
PRECAUTIONS:
1. BF-20 NGT, BF-30 NGT, IR-20 NGT and IR-30 NGT
may not be installed in a bedroom or 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
, pages 4 through 6.
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 unplug heater and let cool before
servicing. Only a qualified service person should
service and repair heater.
6. Do not run heater:
•
Where flammable 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 qualified service technician to
inspect the room heater and to replace any part of
the control system and any gas control which has
been underwater.
SPECIFICATIONS
IR20TB NG
IR30TB NG
BF20TB NG
BF30TB NG
BTU (Available)
20,000
30,000
20,000
30,000
Type of Gas
Natural Gas Only
Natural Gas Only
Natural Gas Only
Natural Gas Only
Ignition
Battery ignitor (1-AA) Battery ignitor (1-AA) Battery ignitor (1-AA) Battery ignitor (1-AA)
Pressure Regulator Setting
4.5 Inches of Water
5.0 Inches of Water
4.5 Inches of Water
4.5 Inches of Water
Inlet Gas Pressure (Maximum)
14 Inches of Water
14 Inches of Water
14 Inches of Water
14 Inches of Water
Inlet Gas Pressure (Minimum)
7 Inches of Water
7 Inches of Water
9 Inches of Water
9 Inches of Water
Electrical Rating /Blower
120V, 60Hz , 1
120V, 60Hz , 1
120V, 60Hz , 1
120V, 60Hz , 1
Burners / Orifice nozzles
3
4
1
1
Thermostatic Control
Yes
Yes
Yes
Yes
Clearances: inches (mm)
Top
36” (915cm)
36” (915cm)
36” (915cm)
36” (915cm)
Sides
10.5” (267cm)
10.5” (267cm)
10.5” (267cm)
10.5” (267cm)
Floor (min to top of carpet) 2” (51cm)
2” (51cm)
2” (51cm)
2” (51cm)
Fabric / flammable objects 36” (915cm)
36” (915cm)
36” (915cm)
36” (915cm)
