Comfort-Aire A-VFH42PA-1 - Manual (Page 7)

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Heat Controller VFH InverterFlex ® - Outdoor Ductless Mini-Split
3. The awning should be at least 2 ft. (0.6m) away
from the top of the unit’s housing.
• Ensure free flow of air into and out of the unit. All air
inlet/outlets should be free of obstructions such as
walls and shrubs. Minimum clearances should be
maintained. (Fig. 1)
• During heating and defrost modes (heat pump
models only), the condensate should be properly
drained away from the unit. • Do not locate two or
more units in any way that will block discharge air
from one unit to another. Be certain that hot air from
one unit will not blow into a nearby unit to prevent
recirculation or discharge air. (Fig. 6)
• Avoid areas where water, snow, or ice may fall from
the roof onto the unit.
• In climates where snow is a consideration, locate
the unit away from areas prone to drifting.
• Ensure the location of the unit will not be subject
to snow drifts, heavy accumulation of snow or
leaves or other seasonal debris. If such a location is
unavailable, provide an awning for the unit. (Fig. 4
and Fig. 5)
1. An awning can be built over the outdoor unit
to prevent direct sunlight, rain exposure, or
snowfall.
2. Ensure that the awning does not impede the
unit’s required clearances or obstruct air flow.
Rooftop installation
• If the outdoor unit is installed on a roof structure, be
sure to level the unit.
• Ensure the roof structure and anchoring method are
adequate for the unit location.
• Consult local codes regarding rooftop mounting.
Fig. 6
Fig. 4
Fig. 5
Min. 1.5ft (500mm)
Min. 1.5ft (500mm)
Min. 6.5ft (2000mm)
Min. 3.5ft (1000mm)
(Service space)
Fence or
Obstacles
• If the outdoor unit is installed on roof structures
or external walls, excessive noise and vibration
may result, and may also be considered a non-
serviceable installation.
• Oil traps must be made in the refrigerant line set
(every 10 ft.) when the outdoor unit is located above
the indoor unit.