MCAC-UTSM-2010-10
Test Operation
Installation
21
4. Outdoor unit installation (Top Discharge Unit)
4.1 Location selection
Before starting the installation, select and check the suitability of the location for both the indoor and outdoor
unit. Observe all limitations and clearance requirements. The outdoor unit must have sufficient clearance for
air entrance to the condenser coil, for air discharge and for service access.
Note: For multiple unit installations, units must be spaced a minimum of 18 inches apart. (Coil face to coil
face.)
If the unit is to be installed on a hot sun exposed roof or a black-topped ground area, the unit should be
raised sufficiently above the roof or ground to avoid taking the accumulated layer of hot air into the outdoor
unit.
Provide an adequate structural support.
4.2 Service space for outdoor unit
4.3 Install the Unit
On ground installation
The unit may be installed at ground level on a solid base that will not shift or settle, causing strain on the
refrigerant lines and possible leaks. Maintain the clearances shown in Fig.5 and install the unit in a level
position.
Normal operating sound levels may be objectionable if the unit is placed directly under windows of certain
rooms (bedrooms, study, etc.).
Top of unit discharge area must be unrestricted for at least 6 feet above the unit.
Warning: The outdoor unit should not be installed in an area where mud or ice could cause personal injury.
Elevate the unit sufficiently to prevent any blockage of the air entrances by snow in areas where there will be
snow accumulation. Check the local weather bureau for the expected snow accumulation in your area.
Isolate the unit from rain gutters to avoid any possible wash out of the foundation.
On roof installation
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