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The heater is design certified by CSA International for
installation on combustible flooring. For installation on car-
peting, the heater must be mounted on a metal or wood
panel that extends at least three (3) inches beyond the base
of the heater. If the heater is installed in a closet or alcove,
the entire floor shall be covered by the panel.
On an indoor installation, the exhaust discharges into a
vent pipe. Orient the heater so that the vent pipe does not
interfere with adjustment of the operating controls. The
operating control panel located on top of the jacket can be
rotated for convenient access to the control panel.
Table 1: Corrosive Vapors and
Possible Causes
COMBUSTION AND VENTILATION AIR SUPPLY
For indoor installation, the heater requires air supply open-
ings for ventilation and combustion. The minimum require-
ments are for two (2) openings: one 12 inches from the
ceiling for ventilation air and one 12 inches from the floor
for combustion air, in accordance with the latest edition of
the National Fuel Gas Code, ANSI Z223.1., and any local
codes that may apply.
The minimum net free area in square inches shall be
as follows:
Table 2: Combustion and Ventilation
Air Requirements
INDOOR VENT INSTALLATION
Always vent the heater to the outdoors.
•Vent it horizontally or vertically using a Special Gas
Vent, (see Table 5, Page 14), or
•Vent it vertically using Type “B” double wall vent con-
nector pipe.
Locate the heater so as to minimize the length of horizon-
tal venting and the number of vent elbows required.
Horizontal vent runs must slope up 1/4” per foot from the
heater to allow exhaust condensate to drain and must have
a condensate drain as described in the venting installation
instructions.
OUTSIDE VENT COVER REMOVAL
The heater is supplied from the factory with a built-in
stackless outside vent for outdoor installation. Remove the
outside vent cover for indoor installation.
FIGURE 11: Flue collar
11
Area Likely Contaminants
Chlorinated swimming Pool or spa cleaning
pools and spas chemicals. Acids, such as
hydrochloric or muriatic acid
New construction and Glues and cements,
remodeling areas construction adhesives,
paints, varnishes, and
paint and varnish strippers.
Waxes and cleaners
containing calcium or
sodium chloride
Beauty parlors Permanent wave solutions,
bleaches, aerosol cans
containing chlorocarbons
or fluorocarbons
Refrigeration plants or Refrigerants, acids, glues
various industrial and cements, construction
finishing and processing adhesives
plants
Dry cleaning and Bleaches, detergents, or
laundry areas laundry soaps containing
chlorine.
Waxes and cleaners
containing chlorine,
calcium or sodium chloride
All Air From All Air From
Inside Building Outside Building
Model Combustion Vent Combustion Vent
200 200 Sq. In. 200 Sq. In. 50 Sq. In. 50 Sq. In.
333 333 Sq. In. 333 Sq. In. 84 Sq. In. 84 Sq. In.
400 400 Sq. In. 400 Sq. In. 100 Sq. In. 100 Sq. In.
Combustion
Chamber
Flue Collar
4" x 8" Metal
Flue Collar
Vent Body
2855 0597 RTV
Clean the Interior Surface
Vent Pipe
Clean and RTV
This Surface