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8
ALL HEATERS
For clearances from combustible surfaces, see
chart below.
Clearances from Combustible construction.
Indoor Installation:
Top* (Drafthood) - 35"; Vent - 6";
Back - 2"; Right Side - 6";
Left Side - 6"; Floor - 0.
Outdoor Installation:
Top* (Stackless Top) -
unobstructed; Back - 2"; Sides - 6".
* Clearance from Top of Vent Terminal
For servicing, provide at least 24" in front of the
heater for burner tray removal, and at least 18" on the
left side of the heater to inspect and delime the heat
exchanger.
OUTDOOR HEATERS
These heaters are design certified for outdoor
installation, when equipped with the approved top des-
ignated for outdoor use.
Heater with
outdoor Top
Fig. # 8139
WARNING: Do not install within 3 feet of a Heat Pump
or an outdoor condensing unit. Strong air intake from
these equipment can disturb the combustion process
and cause damage or personal injury.
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:
For U.S. installations, 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.
For installations in Canada, pool heaters shall not be installed with the top of the vent assembly within 10 feet
below, or to either side, of any opening into the building. Refer to the latest revision of CAN/CGA-B149.1 and B149.2.
4
foot
Minimum
4
foot
Minimum
1
foot
Minimum
4
foot
Minimum
3
foot
Minimum
10
foot
Minimum
Forced Air Inlet
U.S. Installation Only
Fig # 8245.1