Heatcraft Refrigeration Products H-IM-CU Condensing Unit Rigging and Mounting, Ground Mounting

Condensing Unit Rigging and Mounting

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.

Ground Mounting

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.

Roof Mounting

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.

Access

Provide adequate space at the compressor end of the unit for servicing. Provide adequate space on the connection side to permit service of components.

Spring Mounted Compressor

Compressors are secured rigidly to make sure there is no transit damage. Before operating the unit, it is necessary to follow these steps:

a)Remove the upper nuts and washers.

b)Discard the shipping spacers.

c)Install the neoprene spacers. (Spacers located in the electrical panel or tied to compressor.)

d)Replace the upper mounting nuts and washers.

e)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.

Rigid Mounted Compressor

Some products use rigid mounted compressors. Check the compressor mounting bolts to insure they have not vibrated loose during shipment. See Figure 4.

Figure 3. Spring Mount

Figure 4. Solid Mount for Mobile or Deep Sump Application

Figure 5. Spring Mount