Trane SCWM Series Installation, Operation And Maintenance Manual page 27

WARNING
High Pressure Water!
Failure to follow instructions below could result in
death or serious injury, and equipment damage.
Provide relief valve on system water piping to prevent
instantaneous release of high pressure water.
NOTICE
Proper Water Treatment Required!
The use of untreated or improperly treated water could
result in scaling, erosion, corrosion, algae or slime.
Use the services of a qualified water treatment
specialist to determine what water treatment, if any, is
required. Trane assumes no responsibility for
equipment failures which result from untreated or
improperly treated water, or saline or brackish water.
Condenser water piping connections are located on the
right or left hand side of the unit (depending upon
configuration required). All field-installed piping must
conform to applicable local, state, and federal codes. To
complete condenser water connections follow the
procedure below.
1. Evaporator module should be in its final location and
isopads installed if necessary, see
2. Set condensing unit and spacer cassettes in place just
in front of evaporator module and line up refrigerant
connections.
3. Install 3" water pipe between condensing unit
cassettes ensuring that condenser water bracket is in
place on each cassette to support the water pipes.
Depending upon the tonnage and right hand/left hand
configuration, there will be one or more sets of 3" pipe
that will need to be installed between cassettes. Refer
to the following figures for typical installation.
Figure 12. Condenser water bracket
PKG-SVX027A-EN
Figure 13. Condenser cassettes-1
Figure 14. Condenser cassettes-2
Figure 9, p. 23
4. Ensure that 3" tee strainer (ship with) is installed on
5. Attach the water supply line to the inlet of the tee
6. If using a cooling tower, refer to
7. Ensure the water pressure to the unit does not exceed
8. It is recommended that water pressure is applied prior
Installation - Mechanical
inlet water connection.
strainer, and the return line to the outlet connection. If
the unit has a waterside economizer and/or control
valves, these components will need to be installed at
this time.
typical piping circuit from the unit.
400 psig.
to fan cassette installation.
Figure 15, p. 28 for a
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