Technical data

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Page __________ of __________
Required clearances depend on the size of the
heater (BTUH input), the position of the reflector,
and the addition of an optional side shield. The
side shield is a field-installed, modular shield (2
pieces per 10 ft. tube length). The shield hangs ver-
tically on the “rear” side only, along the entire length
of a straight tubular system. Refer to Clearance
Orientation Illustrations to define “Top”, “Below”,
“Front”, and “Rear” clearances.
The clearances listed are installation requirements.
In addition, ANSI Z-223.1, Section 6.18, requires that
signs be posted specifying the maximum permis-
sible stacking heights to assure that the required
clearances from the heater to combustibles are
maintained.
Location
Recommendations
for Efficient
Application
When selecting the installation loca-
tion, major factors to consider are (1)
Personal and Property Safety, (2)
Personal Comfort, and (3) Heating
Efficiency. Because of the unique
features of radiant heat transfer, se-
lecting the most efficient location for
infrared equipment depends on the
“floor” coverage of the emitted heat
rays. Floor coverage distance can
be figured as approximately two
times the mounting height of the unit.
However, comfort level heating de-
pends on the infrared intensity and
on the balance of the radiant emis-
sion over the length of the system.
Infrared intensity decreases with
higher mounting heights and greater
floor coverage. IMPORTANT: Another factor when locating the heater in relation to people is that the heat emitted from the burner/
combustion chamber end of a tubular infrared heater is more intense that the heat emitted from the exhaust end. Configurations
including an optional “U” tube provide the best balance of radiant emission over the length of the system.
For space heating infrared applications, the location of the unit must be evaluated as part of the heater size selection. In order to select
the proper heater size, determine the total BTU’s required, the floor coverage required, and the mounting height. From this information,
design a heater size and location plan that will provide the most complete floor coverage without excessive overlapping. In most cases,
perimeter heaters should be located parallel to the wall. The distance from the wall to the unit is determined by whether the reflectors
will be angled or horizontal.
For spot heating applications, the tubular system should be located to direct the rays toward the area requiring heat. Depending on the
installation, this can be done from directly overhead or reflector angled from the side. U-tube configurations are often best suited to
overhead spot heating applications. Use the mounting height, the size of the heater, the heater configuration, and the application
conditions to determine the most efficient location for the heater.
WARNING: GAS-FIRED APPLIANCES ARE NOT
DESIGNED FOR USE IN HAZARDOUS ATMO-
SPHERES CONTAINING FLAMMABLE VAPORS OR
COMBUSTIBLE DUST, OR ATMOSPHERES CON-
TAINING CHLORINATED OR HALOGENATED HY-
DROCARBONS. INSTALLATIONS IN PUBLIC GARAGES
OR AIRPLANE HANGARS ARE PERMITTED WHEN IN
ACCORDANCE WITH ANSI Z83.6B AND NFPA-408 AND
88 CODES OR CANI-B149 CODES AND ENFORCING AU-
THORITIES.
Clearances to Combustibles
INFRA-REZ
®
HEATER Model TR
TOP OF REFLECTOR
FRONT OF
REFLECTOR
BELOW REFLECTOR
OR
BELOW THE TUBE
REAR OF
REFLECTOR
OR
SIDE SHIELD
HORIZONTAL REFLECTOR
TOP OF REFLECTOR
FRONT OF
REFLECTOR
REAR OF
REFLECTOR
BELOW THE TUBE
REFLECTOR ANGLED (1° to 45°)
HEAT
EXCHANGER
BEND
BURNER
END
EXHAUST
END
HORIZONTAL CLEARANCES
CLEARANCES TO COMBUSTIBLES
SIZE 50 75 100 125 150 175 200
mm
1,676 1,676 1,676 1,981 1,981 2,134 2,134
In.
66 66 66 78 78 84 84
mm
305 305 305 305 305 305 305
In.
12 12 12 12 12 12 12
mm
610 610 610 762 762 762 762
In.
24 24 24 30 30 30 30
mm
914 914 914 1,219 1,219 1,219 1,219
In.
36 36 36 48 48 48 48
mm
610 610 610 610 610 610 610
In.
24 24 24 24 24 24 24
mm
152 152 152 152 152 152 152
In.
6666666
mm
762 762 762 1,067 1,067 1,372 1,372
In.
30 30 30 42 42 54 54
mm
762 762 762 1,067 1,067 1,372 1,372
In.
30 30 30 42 42 54 54
mm
1,219 1,219 1,219 1,676 1,676 1,981 1,981
In.
48 48 48 66 66 78 78
mm
457 457 457 813 813 914 914
In.
18 18 18 32 32 36 36
mm
914 914 914 1,067 1,067 1,372 1,372
In.
36 36 36 42 42 54 54
mm
305 305 305 305 305 305 305
In.
12 12 12 12 12 12 12
FRONT
REAR
FRONT
REAR
FRONT
REAR
WITH
REFLECTOR
POSITIONED
0 -30°
31 - 45°
0 - 30° WITH
SIDE SHIELD
BURNER END
HEAT
EXCHANGER
EXHAUST END
VENT
ALL HEATERS
HORIZONTAL
CLEARANCES
BELOW
TOP