Installation checklist and request for start-up
The services of a Johnson Controls representative will be furnished to check the installation and
supervise the initial start-up and operation on all chillers installed within the Continental United
States.
After the unit is installed, piped and wired as described in this Instruction, but before any attempt
is made to start the unit, the Johnson Controls Office should be advised so that the start-up service,
included in the contract price, can be scheduled. Complete the Installation Checklist and Request for
Startup Engineer (Form 160.79-CL1 and send to the Johnson Controls office.
Table 17: Motor connections
Motor rated load amps CT ratio
3 phase motor voltage 50 / 60 Hz
200:1 350:1 700:1 1400:1
200-600
65-111
A
112-224
A
225-829
A
830-1790
A
2300-4160
11-18
C
19-37
B
38-123
A
124-264
A
265-518
A
Note:
A. Requires passing motor lead through current transformer (CT) once before connecting to
power supply.
B. Requires passing motor lead through CT twice before connecting to power supply.
C. Requires passing motor lead through CT three times before connecting to power supply.
Reassembly
To reassemble the chiller, complete the steps in the following general procedure.
Form 7 shipment
1. Locate the evaporator and condenser shells in their final position.
2. Bolt the tube sheets together as shown in Figure 1. Note that the outside surfaces of the tube
sheets must be flush.
Form 3 and Form 7 shipment
1. Level the shells in both directions. The longitudinal alignment of the shell must be checked
by placing a level on the top of the shell, next to the discharge connection. The transverse
alignment must be checked by placing a level on the tops of both end sheets. After the shell
is leveled, wedge and shim each corner of the shell to solidly support it while assembling the
other parts.
2. The discharge lines and suction lines must be stenciled as "Drive #1" or "Drive #2". Correct
orientation is necessary for proper fit.
Centrifugal Liquid Chillers44
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