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Installation instructions and Owner’s Manual
3
Product Features
Figure 1
SAFETY DEVICE
This heater has a pilot with an Oxygen Depletion Sensor
(ODS) safety shut off system. The ODS/pilot shuts off
the heater if there is not enough fresh air.
IGNITION SYSTEM
PIEZO: BF10NG / IR10NG – The heater is equipped
with a piezo manual ignitor. This system requires no
matches, batteries, or other source to light heater.
Electronic: BF20NGT/BF30NGT/IR20NGT/IR30NGT –
The heater is equipped with an electronic manual
ignitor. This system requires no matches, or other
source to light heater, but does require one AA battery to
operate ignitor.
To install or replace battery unscrew the ignitor
cap (red button), insert battery and replace cap.
THERMOSTATIC CONTROL ON
THERMOSTAT MODELS
(BF20NGT, BF30NGT, IR20NGT and IR30NGT)
These heaters have a control valve with a thermostat
sensing bulb. This results in the greatest heater comfort
and may result in lower bills.
LOCAL CODES
Install and use heater with care.
Installation must conform to local codes or in the
absences of local codes, use the latest edition of
National Fuel Gas Code ANSI Z223.1/NFPA 54.
UNPACKING
1. Remove heater from carton.
2. Remove all protective packaging applied to
heater for shipment.
3. Check heater for any shipping damage. If
heater is damaged, promptly inform dealer
where you bought heater.
FRESH AIR FOR COMBUSTION AND
VENTILATION
WARNING: This heater shall not be installed in a
confined space or unusually tight construction
unless provisions are provided for adequate com-
bustion and ventilation air. Read the following
instructions to insure proper fresh air for this and
other fuel-burning appliances in your home.
ESTABLISHING ADEQUATE VENTILATION
The following are excerpts from National Fuel Gas
Code, NFPA 54/ ANSI Z223.1, Section 5.3, Air for
Combustion and Ventilation. All spaces in homes fall
into one of the three following ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
This heater must not be installed in a confined space or
unusually tight construction unless provisions are
provided for adequate combustion and ventilation air.
The information on pages 3 through 5 will help you
classify your space and provide adequate ventilation.
Unusually Tight Construction
If your home meets all of the three following criteria you
must provide additional fresh air. See Ventilation Air
from Outdoors, page 5.
Unusually tight construction is defined as construction
where:
a. Walls and ceilings exposed to the outside atmo-
sphere have a continuous water vapor retarder with a
rating of one perm (6 x 10
-11
kg per pa-sec-m
2
) or less
with openings gasketed or sealed and
b. Whether stripping has been added on openable
windows and doors, and
c. Caulking or sealants are applied to areas such as
joints around windows and door frames, between
wall-ceiling joints, between wall panels, at penetra-
tions for plumbing, electrical, and gas lines, and at
other openings.
If you home does not meet all of the three criteria
above, see Determing the Type of Heater Location
Space, page 4.
Confined Space and Unconfined Space
The National Fuel Gas Code, NFPA 54/ ANSI Z223.1
defines a confined space as a space whose volume is
less than 50 cubic feet per 1,000 Btu per hour (4.8 m
3
per kW) of the aggregate input rating of all appliances
installed in that space, and an unconfined space as a
space whose volume is not less than 50 cubic feet per
1,000 Btu per hour (4.8 m
3
per kW) of the aggregate
input rating of all appliances installed in that space.
Rooms communicating directly with the space in which
the appliances are installed*, through openings not
furnished with doors, are considered a part of the
unconfined space.
Ignitor Button
Control Knob
Grill
Front Panel
Burners
Heater
Cabinet