Installation, Operation and Maintenance 2 - 9
Figure 9
Shipping Spacer Removal
Unit Leveling
NOTE: The electrical panel side of the unit is
designated as the “front” of the unit.
1 Check unit level end-to-end by placing a level on
the top surface of the evaporator shell.
2 If there is insufficient surface available on the top
of the evaporator shell, attach a magnetic level to
the bottom of the shell to level the unit. The unit
should be level to within 1/4” (6.35 mm) over its
length.
3 Place the level on the evaporator shell tube sheet
support to check side-to-side (front-to-back) level.
Adjust to within 1/4” (6.35 mm) of level front-to-
back.
NOTE: The evaporator MUST be level for optimum
heat transfer and unit performance.
4 Use full-length shims to level the unit.
Water Piping
Piping Connections
CAUTION
CAUTION: To prevent equipment
damage, bypass the unit if using an
acidic flushing agent.
Make water piping connections to the evaporator and
condenser. Isolate and support piping to prevent
stress on the unit. Construct piping according to local
and national codes. Insulate and flush piping before
connecting to unit.
Use grooved pipe connectors for all water piping
connections. Evaporator and condenser water inlet
and outlet sizes and locations are shown by the unit
submittals and in
Figure 10
through
Figure 12
. The
designation in the tables corresponds to the
compressor frame code followed by the evaporator
shell code followed by the condenser shell code as
given in the unit model number, digits 6, 7, 12, 13,
16, and 17.
Table 11
gives additional water
connection information.
Reversing Water Boxes
All water boxes may be reversed end-for-end. Do not
rotate water boxes. Remove the sensors from the
wells before removing the water box. Complete the
water box switch procedure and replace the sensors.
See
Figure 10
through
Figure 12
for correct
orientation of the water inlet and outlet.
If the water boxes are reversed, be sure to properly
rewire the water temperature sensors in the control
panel.
NOTE: Be certain to replace water boxes right-side-
up to maintain proper baffle orientation. Use new o-
rings.
Remove
4 Shipping
Spacers (only 3 on B
Compressor
Housing
M20 bolt
family)
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