Introduction and Installation
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7
IOM 1322-1 • WATER-COOLED SCROLL COMPRESSOR
control panel. Left-hand condenser connections are an option.
For shell and tube evaporators, the water connections are on
the back side of the unit. A clearance of at least 3 feet (1219
mm), or more if codes require, should be provided beyond this
piping and on all other sides and ends of the unit for general
servicing or for changing the compressors, if it ever becomes
necessary. Allow a minimum of 4-ft clearance in front of the
control panel or as required by NEC or local codes.
Clearance should also be provided for cleaning or removal
of condenser tubes on one end of the unit. The clearance for
cleaning depends on the type of apparatus used, but can be as
much as the length of the condenser (10 feet, 3050 mm). Tube
replacement requires the length of the condenser (as much
as 12 feet) plus three feet of workspace. This space can be
provided via a doorway or other opening.
Moving the Unit
Refer to Lifting/Mounting weights beginning on
The packaged unit skid option is strongly recommended for
ease of handling and to help prevent damage if a crane is not
available for rigging at site. Properly designed field supplied
skids or dollies are acceptable. Do not push unit along a floor
without them.
All moving and handling of packaged units (
) must be performed with skids or dollies under the unit and
they should not be removed until the unit is in the final location.
Never put the weight of the unit against the control box.
In moving, always apply pressure to the base on the skids only
and not to the piping or other components. A long bar will help
move the unit. Avoid dropping the unit at the end of the roll.
If the unit must be hoisted, lift the unit from the removable
lifting arms factory-bolted to each end of the unit adjacent
to the tube sheet by attaching cables or chains to the end of
the arms. A spreader bar must be used to protect the piping,
control panel and other areas of the chiller (
). The lifting arms should be removed after use.
Do not attach slings to piping or equipment. Do not attempt
to lift the unit by lifting points mounted on the compressors.
They are for lifting only the compressor should one need to
be removed from the unit. Move unit in the upright horizontal
position at all times. Set unit down gently when lowering from
the truck or rollers. Improper rigging, lifting, or moving of a unit
can result in property damage, severe personal injury or death.
Follow rigging and moving instructions carefully. Do not stand
beneath the unit while it is lifted or being installed.
Figure 1: Lifting the Unit
Placing the Unit
The small amount of vibration normally encountered makes
this unit particularly desirable for basement or ground floor
installations where the unit can be mounted directly to the
floor. The floor construction should be such that the unit will
not affect the building structure, or transmit noise and vibration
into the structure. Isolator pads or spring isolators are available
options.
Mounting
All compressor bolts, rubber grommets, and fasteners should
be left in place on the base plate as shown in
these fasteners are considered to be ‘temporary shipping bolts.
Figure 2: Compressor Base Plate Mounting
Summary of Contents for WGZ030DW
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