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Unit Installation
Unit Installation
Location
Prior to the installation, select and verify the adaptability of the location for both indoor and outdoor
units. Take into consideration all limitations and clearance requirements. The outdoor unit must
comprise sufficient clearance for incoming air into the condenser, for discharge air, and for service
access. See Figure 2.
Important: In the case of multiple units installation, these must be spaced to contain a minimum
If the unit is to be installed on the roof with exposure to sun rays, or on a "blackened" surface, then
the unit must be placed over a base with sufficient elevation that will prevent the accumulation of
hot air being drawn into the outdoor unit.
Provide an appropriate structured support.
Installation on Outdoor Flat Surface
The unit may be installed on a solid flat surface which cannot shift or move in order to prevent stress
over refrigerant lines or possible leaks. Clearances must be maintained as can be seen in Figure
2. Installation must be completely balanced.
Normal operation levels of noise may prove to be objectionable if the unit is installed directly below
windows o close to bedrooms, studios, etc.
Important: Outdoor unit must not be installed in areas where accumulation of mud or ice may
Place the unit high enough to avoid blocking the entry of air due to ice/snow or in areas that are
prone to accumulate ice/snow. Isolate the unit away from drains to avoid mud slides/landslides of
the foundation.
Installation on the Roof
When installing the unit on the roof, the structure should be able to support the total weight of the
unit, including mounting frame, rails, etc., which must be used to minimize the transmission of
sound or vibrations to the conditioned space.
Installation of the unit
1. Provide a mounting base on the selected installation area.
2. Remove all packaging material and inspect the unit in search of possible damages.
3. Compressor fastening nuts must remain tightened.
4. Place the unit on the provided mounting base.
The outdoor unit must be connected to the indoor coil with the provided copper refrigerant piping.
The installation must employ only the approved sizes of pipes for system combinations.
Refrigerant charge shown on the unit's nameplate refers to the lengths of standard size
interconnecting liquid line up to 15 feet.
Note: The use of a larger size of line from original specifications could cause problems of oil
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separation of 36 inches (face-to-face coils).
cause personal injury or damages to the system.
return. The use of a much smaller size of line could cause loss of capacity and other
problems provoked by insufficient flow of refrigerant. Tilt the horizontal suction lines at
least 1" every 20 feet towards the outdoor unit to aid in the appropriate return of oil.
MS-SVN052E-EN
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