Installation Of Remote Outdoor Heat Exchanger; Rigging; Locating The Remote Heat Exchanger - DA Data Cool Series Installation, Operation And Maintanance Manual

4.0 INSTALLATION OF REMOTE OUTDOOR HEAT EXCHANGER

4.1

Rigging

This section covers outdoor condensing units and fluid 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.
Concrete pads or rails 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.
4.2

Locating the Remote Heat Exchanger

Consult local codes or ordinances for restrictions regarding location of unit.
Select a location for the unit where ice and snow will not fall from an overhang and damage the unit top
or fan blade. Care must be exercised to maintain the clearance requirements.
Air cooled condensing units should be placed at a level that is above the level of the indoor evaporator.
Mounting a condensing unit more than ten feet below the evaporator is not recommended. Excessive
liquid line pressure drop can cause poor evaporator performance.
See dimensional drawings for the following:
1. Location of refrigeration and electrical connections
2. Recommended clearances
3. Direction of condenser airflow
4. Mounting base dimensions
Place unit on level base strong enough to support the weight of the unit and resist effects of frost heaving,
etc. Concrete lintels can be used if spaced to adequately support unit.
Allow air to circulate under unit. Channels are provided for this purpose or unit may be set in a bituminous
mixture such as roofing tar to prevent base pan from rusting. Do not plug drain holes.
On rooftop applications, locate unit at least 6 inches above roof surface. Where possible, place unit
above load-bearing wall. Arrange supporting members to adequately support unit and minimize
transmission of vibration to building. Precast concrete lintels, concrete blocks, treated timbers or steel
beams can be used. Consult local code governing rooftop applications. In cold climates locate unit
above expected snow levels.
Avoid locations where flowers, shrubs, etc. are in the pathway of condensing unit air discharge or where
the condensing fan will discharge against prevailing wind or a building structure.
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