Heatcraft Refrigeration Products Condensing Units H-IM-CU User Manual

Rigging holes are provided on all units.  Caution should be exercised when 

moving these units. To prevent damage to the unit housing during rigging, 

cables or chains used must be held apart by spacer bars. The mounting 

platform or base should be level and located so as to permit free access of 

supply air. 

Concrete slab raised six inches above ground level provides a suitable base. 

Raising the base above ground level provides some protection from ground 

water and wind blown matter.  Before tightening mounting bolts, recheck 

level of unit. The unit should in all cases be located with a clear space in all 

directions that is at a minimum, equal to the height of the unit above the 

mounting surface. A condensing unit mounted in a corner formed by two 

walls, may result in discharge air recirculation with resulting loss of capacity.

Due to the weight of the units, a structural analysis by a qualified engineer 

may be required before mounting. Roof mounted units should be installed 

level on steel channels or an I-beam frame capable of supporting the weight 

of the unit. Vibration absorbing pads or springs should be installed between 

the condensing unit legs or frame and the roof mounting assembly.

Provide adequate space at the compressor end of the unit for servicing. 

Provide adequate space on the connection side to permit service of components.  

Compressors are secured rigidly to make sure there is no transit damage. 

Before operating the unit, it is necessary to follow these steps:

Remove the upper nuts and washers.
Discard the shipping spacers.
Install the neoprene spacers. (Spacers located in the electrical    

 

panel or tied to compressor.)
Replace the upper mounting nuts and washers.
Allow 1/16 inch space between the mounting nut/washer and    

 

rubber spacer. Mounting spring must not be fully compressed    

 

when mounting nut is properly installed. See Figures 3 and 5.

Some products use rigid mounted compressors. Check the compressor 

mounting bolts to insure they have not vibrated loose during shipment. See 

Figure 4.

a)
b)
c)

d)
e)