10
12 in
305 mm
24 in
610 mm
12 in
305 mm
24 in
610 mm
NOTE - Minimum clearances shown.
Figure 21. Unit installed in Alcove
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 “Fig
ure 19. Outdoor Unit on Pedestal and Protective Can
opy”.
• The unit base should be elevated above the depth of
average snows as illustrated in “Figure 22. 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 23. 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 24. Avoid Defrost Water Ice Hazard”.
Air Inlet
Air Outlet
Figure 22. Outdoor Unit on Brackets above Snow
Line
Air Outlet
Air Inlet
12 in
305 mm
79 in
2007 mm
Figure 23. Outdoor Unit Air Flow Obstructed by
Snow
Figure 24. Avoid Defrost Water Ice Hazard
Condensate Piping
Condensate formed during the heating and defrost
processes must be drained from heat pump units. Drain
holes are provided in the base of the units to ensure proper
drainage. Heat pumps must be raised when installed on a
concrete pad or the ground to allow drainage to occur. If
the heat pump unit is installed on wall mounting bracket,
insert the provided drain connector into one of the 1
inch (25 mm) drain holes and attached a field-provided
insulated drain hose to the connector. Use field-provided
rubber plugs to cover any unused drain holes (see “Figure
25. Condensate Drain” on page 10).
Drain
Connector
Chassis
Condensate Drain
(location varies per model)
Figure 25. Condensate Drain
Buried Refrigerant Pipe Protection
• All refrigerant lines must be insulated regardless of if
it is buried.
• In addition to insulating each line of piping, buried
lines must rest inside a
sealed, watertight
conduit.
Summary of Contents for MWHA009S4-1L
Page 20: ...20...
