Installation
Page 6
WARNING
DO NOT INSTALL WITHIN 3 FEET OF AHEAT PUMP OR
AN OUTDOOR CONDENSING UNIT. STRONG AIR INTAKE
FROM THIS TYPE OF EQUIPMENT CAN DISTURB THE
COMBUSTION PROCESS AND CAUSE DAMAGE OR PER-
SONALINJURY.
HEATER WITH OUTDOOR STACKLESS TOP
Heaters must not be installed under an overhang of less
than 3 ft from the top of the heater. Three sides must be
open in the area under the overhang. Roof water drainage
must be diverted away from heaters installed under over-
hangs with the use of gutters.
• For U.S. installations, the point from where the flue prod-
ucts exit the heater must be a minimum of 4 ft below, 4 ft
horizontally from, or 1 ft above any door, window or gravi-
ty inlet into any building. The top surface of the heater
shall be at least 3 ft above any forced air inlet, or intake
ducts located within 10 ft horizontally. See Figure 6.
• For installations in Canada, pool heaters shall not be
installed with the top of the vent assembly within 10 ft
below, or to either side, of any opening into the building.
Refer to the latest revisions of CAN/CGA-B149.1 and
B149.2
OUTDOOR HIGH-WIND TOP
NOTE: The outdoor high-wind top is optional equip-
ment and does not come standard with the heater.
Use the following part numbers.
P/N 004301 (Green) P/N 011558 (Gray)

HIGH WIND CONDITIONS (OUTDOOR UNITS ONLY)

In areas where high winds are frequent, it may be neces-
sary 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.
In areas of daily high winds, it may be necessary to
replace the outdoor stackless top with a stack adapter in
combination with a wind-resistant/weather-proof outdoor
stack. See Figure 4.
The outdoor stack serves the same function as the low-
profile stackless top and should be installed in accordance
with the same clearance requirements. Follow the installation
instructions provided with the High Wind Kit for installation.
Figure 4. Outdoor High-Wind Top.
INDOOR INSTALLATION
The heater is design-certified for indoor installation when
equipped with the approved drafthood.
NOTE: For Canada, indoor installation is restricted
to an enclosure that is not occupied and does not
directly communicate with an occupied area. Refer
to the latest edition of CAN/CGA-B149.1 and B149.2
for specific requirements.
Locate heater as close as is practical to a chimney or gas
vent. Heater must always be vented to the outside. See Vent
Piping section for details. Minimum allowable space is shown
on the nameplate. Follow the installation instructions provid-
ed with the Indoor Drafthood Kit for installation.
Figure 5. Indoor Drafthood.
INDOOR DRAFTHOOD
NOTE: The indoor drafthood is optional equipment
and does not come standard with the heater. Use
the following part number.
P/N 003723

Indoor

Drafthood

HIGH-WIND

TOP