Direct Sunlight, Rain, Snow And Ice Protection - Lennox MPA012S4S-1P Installation Instructions Manual

• There must be sufficient space to carry the unit into
and out of the site
• There must be unobstructed air flow around the air in-
let and the air outlet
• The unit must not be installed in areas where a flam-
mable gas leak may occur
• Install the outdoor unit a minimum of 3 feet (1m) away
from any antenna, power cord (line), radio, telephone,
security system, or intercom. Electrical interference
and radio frequencies from any of these sources may
affect operation
• Since water drains from the outdoor unit during vari-
ous stages of operation, do not place anything which
may be damaged by moisture under the unit

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 16.
Outdoor Unit on Pedestal (Stand) and Protective Can-
opy" or "Figure 21. Dog House-Style Shelter" on page
15.
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
16. Outdoor Unit on Pedestal (Stand) and Protective
Canopy"
• The unit base should be elevated above the depth of
average snows as illustrated in "Figure 17. 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 18. 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 19. Avoid Defrost Water Ice Hazard"
Protective canopy
305 mm
Air Inlet
Air Outlet
Pedestal
(stand)
Side View
Figure 16. Outdoor Unit on Pedestal (Stand) and
Protective Canopy
Air Outlet
Figure 17. Outdoor Unit on Brackets above Snow
79 in
2007 mm
Figure 18. Outdoor Unit Air Flow Obstructed by
14
Protective canopy
24 in
610 mm
12 in
Front View
Air Inlet
Line
12 in
305 mm
Air Inlet
Air Outlet
Snow
Pedestal
(stand)