Installation Of Remote Outdoor Heat Exchanger; Rigging; Leg Assembly; Locating The Remote Heat Exchanger - Data Aire LCS Installation, Operation And Maintenance Manual

4.0 INSTALLATION OF REMOTE OUTDOOR HEAT EXCHANGER

Air cooled condensers and fl uid coolers have individual Installation, Operation and Maintenance
manuals which should be referred to for more complete details.
4.1

Rigging

This section covers outdoor condensers/condensing units and fl uid coolers. Outdoor heat exchangers
should be moved to their (typically rooftop) mounting location using a crane or fork lift. Each fan
section has supports with lifting holes at the top.
Do not lift with a choke sling around the unit. Spreader bars are recommended for lifting multiple fan
units. Under no circumstances should the coil headers or piping be used for lifting the unit. Ideally,
the unit should be kept in its shipping crate until it is ready to be set in place.
4.2

Leg Assembly

The legs of remote heat exchanger are shipped with the unit and need to be lowered during the
rigging process. The legs must be unbolted from their collapsed position and extended prior to placing
the unit on its pad. Each leg extends down 18 inches and reattached using the same bolts. The
bolts are placed through the lower set of holes on the bracket. Multiple fan units have leg supports
between each fan section.
Model number DARC-03 and DARC-05 do not have legs and are ready for installation.
Note: Failure to extend the legs will result in poor air distribution over the cooling coil
resulting in signifi cant capacity reduction.
Concrete pads or a rail system are often used to provide support for the heat exchanger. Bolt holes
in the bottom of each leg can be used to anchor the unit.
4.3

Locating the Remote Heat Exchanger

The remote heat exchanger must be located in an area that will ensure free air fl ow into and out of
the heat exchanger plus adequate service access clearance. Short circuiting of the air fl ow or the
intake of warmer air from another unit will seriously degrade the performance of the air cooled heat
exchanger.
Do not locate the heat exchanger in a location that is bordered by tall obstructions (i.e., higher than 10
feet) on no more than two sides. See fi gure on next page for minimum clearance from obstructions and
between units. With proper clearance on all sides, two units can be placed side by side. Additional
units should be placed at least 48 inches apart.
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