Nor-Lake Refrigeration Systems - Manual (Page 5)

09/14 Rev. E 101628 5
CONDENSING UNIT HANDLING AND PLACEMENT

In order to minimize damage to the unit enclosure, the shipping crate should be left intact until
the unit is in its final location.

The condensing unit rack must be mounted level and anchored using the mounting holes
provided in its base to prevent movement. Caution: If the unit is not mounted level, the
compressor may not receive proper lubrication, which will result in premature failure.

Locate the condensing unit rack as close to the unit cooler as possible for the most efficient and
least costly operation.

When placing the condensing unit rack, care must be taken so as not to shroud or restrict the
air-in side (condenser) or the air-out side (discharge) of the unit.

The condenser side of the unit must not be located closer to any building wall, roof parapet, or
obstruction than a dimension equal to the condenser height, and the air-out should discharge
into free space.

Do not locate multiple units so the air-out (discharge) from one unit is directed into the air-in
(condenser) end of another unit.

When a condensing unit rack is installed indoors, an adequate supply of outside air must be
provided, 750 CFM per horsepower, as well as a means of exhausting the air from the room to
prevent heat buildup. Heat buildup will create inefficient operation and possible “trip out” on high
head pressure overload.

On condensing units having externally spring mounted compressors, loosen the hold down nuts
and remove the spring steel shipping clips from the mounting springs to allow the compressor to
float freely on the springs.

If the condensi ng unit is water cooled, it must be installed in a location that isn’t subject to
freezing temperatures in cold weather.
Ceiling Mount with Optional Membrane Roof
See the following illustrations for a ceiling mounted system when the Walk-In has an optional
membrane roof. The fastener bracket will keep the unit from moving on the membrane roof.