JOHNSON CONTROLS
14
FORM 160.78-N1
ISSUE DATE: 5/30/2012
SECTION 2 - INSTALLATION
The rigging, operating weights, and over-
all dimensions are provided in Section 3
- Unit Weights and Measurements to help
you determine the clearances required for
rigging. Add 6" (15 cm) to overall height
for optional skidded unit.
DETERMINE LOCATION
YMC
2
Chillers are furnished with vibration isolator
mounts for basement or ground level installations.
Units may be located on upper floor levels providing
the floor is capable of supporting the total unit operat-
ing weight and optional spring isolators are used.
Sufcient clearance to facilitate normal
service and maintenance work must be
provided around and above the unit and
particularly space provided at either end to
permit cleaning or replacement of evapo-
rator and condenser tubes – see Clear-
ance. A doorway or other sufciently large
opening properly located may be used.
The chiller should be located in an indoor
location where temperatures range from
40°F to 110°F (4.4°C to 43.3°C).
Foundation Requirements
A level floor, mounting pad or foundation must be pro-
vided by others, capable of supporting the operating
weight of the unit.
Clearance Requirements
Clearances should be adhered to as follows:
Rear and Above Unit 2 ft (61 cm)
Front of Unit 3 ft (91 cm)
Tube Removal 14 ft* (4.3 m) either end
* 10' (3m): 2110 & 2510 Shell Codes
14' (4.3m): 2514 Shell Codes
RIG UNIT TO FINAL LOCATION
Rig the unit to its final location on the floor or mount-
ing pad, lift the unit (or shell assembly) by means of an
overhead lift and lower the unit to its mounting posi-
tion. (If optional shipping skids are used, remove them
before lowering the chiller to its mounting position.)
At this point units shipped dismantled
should be assembled under the supervi-
sion of a Johnson Controls representative.
If evaporator is to be field insulated, the insulation
should be applied to the evaporator before the unit is
placed in position while the unit is in the lift position.
Be sure unit is properly supported. (Refer to Insulation
in this section and Figure 9 for further information.)
INSTALL ISOLATORS
Neoprene Isolator Pads
Locate And Place Isolator Pads
The isolator pad mounts are to be located and placed
rubber-side down as shown in Figures 3 and 4.
After the isolator pads have been placed into position
on the floor, lower the chiller onto the pads. When the
unit is in place, remove the rigging equipment and
check that the unit is level.
Level The Unit
The longitudinal alignment of the unit should be
checked by placing a level on the top center of the
evaporator shell under the compressor/motor assem-
bly. Transverse alignment should be checked by plac-
ing a level on top of the shell end sheets.
The unit should be level within 1/4" (6 mm) from one
end to the other end and from front to the rear. If the
chiller is not level within the amount specified, lift
it and place shims between the isolation pad and the
chiller tube sheets. (Shims are furnished by the install-
er.) Lower unit again and recheck to see that it is level
Checking The Isolation Pad Deection
All isolation pads should be checked for the proper de-
flection while checking to see if the unit is level. Each
pad should be deflected approximately 0.10 inches
(2.5 mm) to 0.20 inches (5 mm). If an isolation pad is
under-deflected, shims should be placed between the
unit tube sheet and the top of the pad to equally deflect
all pads.
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