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4
foot
Minimum
4
foot
Minimum
1
foot
Minimum
4
foot
Minimum
3
foot
Minimum
10
foot
Minimum
Forced Air Inlet
12"
Minimu
m
12"
M
inimum
4"
Minimum
HEATER
Sheet Metal
24 Gauge
8
HIGH WIND CONDITIONS
(OUTDOOR UNITS ONLY)
In areas where high winds are fre-
quent, it may be necessary to locate the
heater a minimum of 3' from high vertical
walls, or install a wind break so the heater
is not in direct wind current.
OUTDOOR HEATERS
These heaters are design certified for outdoor installation, when equipped with the approved tops designated
for outdoor use.
Heaters must not be installed under an overhang of less than three (3) feet from the top of the heater. Three
(3) sides must be open in the area under the overhang. Roof water drainage must be diverted away from the heaters
installed under overhangs with the use of gutters.
WARNING: The heater shall not be located in an area where water sprinklers, or other devices, may cause water
to spray through the cabinet louvers and into the heater. This could cause heavy internal rusting or damage some
electrical components, and this would void the warranty.
The point from where the flue products exit the heater must be a minimum of four (4) feet below, four (4) feet
horizontally from or one (1) foot above any door, window or gravity inlet to a building. The top surface of the heater
shall be at least three (3) feet above any forced air inlet, or intake ducts located within ten (10) feet horizontally.
Installation must be in accordance with local codes,
or, in the absence of local codes, with the latest edition
of the National Fuel Gas Code, ANSI Z223.1 and
National Electrical Code, ANSI/NFPA 70.
BASE INSTALLATION
Heater must be mounted on a level base, such as
cement slab, cement blocks or other non-combustible
surface. An optional non-combustible surface. An
optional non-combustible base is available for all models.
An alternative method for providing a base for combus-
tible floors is illustrated. Heater must not be installed on
carpeting.
Fig. # 8148.0
CLEARANCES
ALL HEATERS
For clearances from combustible surfaces, see the
chart below
CLEARANCE FROM COMBUSTIBLE
CONSTRUCTION
INDOOR INSTALLATIONS:
Top* (Drafthood) - 36" Back - 10"
Front - Alcove Right Side 6"
Vent - 6" Left Side (Water Side) 6"
OUTDOOR INSTALLATION:
Top* (Stackless Top) - Unobstructed
Back - 10" Side - 6"
*Clearance from top of vent terminal.
*For servicing, provide at lease 24" in front of the
heater for burner tray removal, and at least 18" on water
connection side of the heater to inspect and delime the
heat exchanger.
Hollow Concrete Cinder Block, Align Holes And Leave
Ends Open. Alternative Method For Providing A Non-
Combustible Base.
Fig. # 8245.0