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If unit coil cannot be mounted away from prevailing winter
winds, a wind barrier should be constructed. Size barrier at
least the same height and width as outdoor unit. Install bar-
rier 24 inches (610 mm) from the sides of the unit in the di-
rection of prevailing winds.
Rooftop Application
Wind Barrier Construction
prevailing winter winds
wind barrier
inlet air
Figure 3
Electrical
WARNING
Unit must be grounded in accordance with national
and local codes.
Electric Shock Hazard.
Can cause injury or death.
inlet air
inlet air
inlet air
1 − Install line voltage power supply to unit from a properly
sized disconnect switch.
2 − Ground unit at unit disconnect switch or to an earth
ground.
NOTE − To facilitate conduit, a hole is in the bottom of
the control box. Connect conduit to the control box us
ing a proper conduit fitting.
NOTE − Units are approved for use only with copper
conductors.
24V, Class II circuit connections are made in the low
voltage junction box. Refer to figure 4 for field wiring
diagram.
NOTE − A complete unit wiring diagram is located in
side the unit control box cover.
3 − Install room thermostat (ordered separately) on an in-
side wall approximately in the center of the conditioned
area and 5 feet (1.5 m) from the floor. It should not be
installed on an outside wall or where it can be effected
by sunlight, drafts or vibrations.
4 − Install voltage wiring from outdoor to indoor unit and
from thermostat to indoor unit. See figures 5 and 6.
Page 4
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