Manual

6
Installation Instructions and Owner’s Manual
Unvented Natural Gas Vent Free Room Heaters
*A CSA/AGA certifi ed equipment shutoff valve with 
1/8” NPT tap is an acceptable alternative to test gauge 
connection. Purchase a CSA/AGA certifi ed equipment 
shutoff valve from your dealer.
LOCATING HEATER
This heater is designed to be mounted on the wall. The 
heater can also be located on a non-combustible fl oor, 
away from a wall by using the fl oor mounting stands in-
cluded with the heater. If installed on combustible fl oor-
ing such as carpeting, tile or other combustible material 
other than wood fl ooring, the heater must be placed on 
a wood panel the full width and depth of the appliance. 
For convenience and effi ciency, install the heater:
•  Where there is easy access for operation, 
inspection, and service
•  In the coldest part of the room.
•  If planning to use fan, locate heater near an 
electrical outlet.
CAUTION: If you install the heater in a home garage:  
Heater pilot and burner must be at least 18 inches 
above fl oor . Locate heater where moving vehicle will 
not hit it. 
CAUTION: This heater creates warm air currents. 
These currents move heat to wall surfaces next to 
heater. Installing heater next to vinyl or cloth wall 
covering or operating heater where impurities (such 
as tobacco smoke, aromatic candles, cleaning fl uids, 
oil or kerosene lamps, etc.) are present in the air may 
discolor walls. 
WARNING: Never install the heater: 
•  In a bedroom (RD20NGT, RD30NGT, 
BF20NGT or BF30NGT) 
•  In a recreational vehicle ·.
•  Where curtains, furniture, clothing, or other 
fl ammable objects are less than 36 inches from 
the front, top, or sides of the heater. 
• As a fi replace insert 
• In high-traffi c areas 
•  In windy or drafty areas 
WARNING: Heater must be mounted to maintain 
the minimum clearances shown in Figure 4. If 
possible, provide greater clearances from the fl oor, 
ceiling, and joining walls. 
WARNING: Rework worksheet, adding the space 
of the adjoining unconfi ned space. The combined 
space must have enough fresh air to supply all ap-
pliance in both spaces. 
Ventilation from Outdoors
If necessary provide extra fresh air by using ventila-
tion grills or ducts. Connect these items directly to the 
outdoors or spaces open to the outdoors. These include 
attics* and crawl spaces. Follow the National Fuel Gas 
Code NFPA 54/ ANSI Z223.1, Section 5.3, Air for Com-
bustion and Ventilation for required size of ventilation 
grills or ducts.
*IMPORTANT: Do not provide openings for inlet or 
outlet into attic. If attic has a thermostat-controlled 
power vent, heated air entering the attic will activate 
the power vent.
IMPORTANT: Vent-free heaters add moisture to 
the air. Although this is benefi cial, installing heater 
in rooms without enough ventilation air may cause 
mildew to form from too much moisture. See Fresh 
Air for Combustion and Ventilation, pages 4 through 
6. 
INSTALLATION
WARNING: Any change to this heater or its 
controls can be dangerous.
NOTICE: This appliance is intended for supplemental 
heating. Use this heater along with your primary heating 
system. Do not install this heater as your primary heat 
source. If you have a central heating system, you may 
run system’s circulating blower while using heater. This 
will help circulate the heat throughout the house. In the 
event of a power outage, you can use this heater as 
your primary heat source for the duration of the outage. 
WARNING: A qualifi ed service person must install 
heater. Follow all local codes. 
CHECK GAS TYPE
Use only natural gas. If your gas supply is not natural 
gas, do not install heater. Call dealer where you bought 
heater for proper type heater.
THIS INSTALLATION REQUIRES:
Before installing heater, make sure you have the items 
listed below:
•  Piping (check local codes)
•  Sealant (resistant to natural gas)
•  Equipment shutoff valve*
•  Ground joint union
•  Test gauge connection*
•  Sediment trap
•  Tee joint
•  Pipe wrench










