Direct Sunlight, Rain, Snow And Ice Protection - Lennox MPA009S4S-*L Installation Instructions Manual

Direct Sunlight, Rain, Snow and Ice Protection

• If the outdoor unit is subjected to prolong exposure to
direct sunlight with temperatures over 100°F (38°C) a
canopy is recommended as illustrated in "Figure 11.
Outdoor Unit on Pedestal and Protective Canopy" or
"Figure 16. Dog House-Style Shelter" on page 14
IMPORTANT
The construction of a canopy or shade is necessary
because of an ambient limit control set to 122°F (50°C)
to protect the electronics. If the outdoor unit is placed in
direct sunlight it is possible that the limit may activate
and shut down the unit.
• Place unit away from overhanging roof lines which
would allow water or ice to drop on, or in front of, coil
or into unit. Construct a canopy as illustrated in "Figure
11. Outdoor Unit on Pedestal and Protective Canopy"
• The unit base should be elevated above the depth of
average snows as illustrated in "Figure 12. Outdoor
Unit on Brackets above Snow Line"
• In heavy snow areas, do not place the unit where drift-
ing will occur as illustrated in "Figure 13. Outdoor Unit
Air Flow Obstructed by Snow"
• Carefully consider how to manage defrost water dis-
posal to prevent ice from blocking walkways or creat-
ing a safety hazard near the outdoor unit as illustrated
in "Figure 14. Avoid Defrost Water Ice Hazard"
Protective canopy
12 in
305 mm
Air Inlet
Air Outlet
Pedestal
(stand)
Side View
Figure 11. Outdoor Unit on Pedestal and Protective
Protective canopy
24 in
610 mm
Pedestal
(stand)
Front View
Canopy
Air Outlet
Figure 12. Outdoor Unit on Brackets above Snow
79 in
2007 mm
Air Outlet
Figure 13. Outdoor Unit Air Flow Obstructed by
Figure 14. Avoid Defrost Water Ice Hazard
13
Air Inlet
Line
12 in
305 mm
Air Inlet
Snow