Johnson Controls York MaxE YK Series, Manual

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Johnson Controls
34
ForM 160.75-n1 (309)
control panel positioning (see Fig. 25)
On large YK chillers equipped with H9 and K1-K7
compressors, the control panel height can be adjusted.
Chillers equipped with P & Q compressors the control
panel height is NOT adjustable. The OptiView™ Control
Center is placed in a position above the evaporator for
shipping. To move the control center into position for
operation, proceed as follows:
1. While supporting the control center, remove
the hardware between the support arms and the
evaporator.
2. Swing the control center into a vertical position.
3. Slide the control center down the guide rails to the
proper position. Tighten securely.
4. Discard unused hardware.
control wiring
On units shipped disassembled, after installation of
the control center, control wiring must be completed
between unit components and control center, solid state
starter, or variable speed drive, when used, using wiring
harness furnished. Refer to Form 160.75-N3.
Field wiring connections for commonly encountered
control modifications (by others) if required, are shown
on Form 160.75-PW4.
No deviations in unit wiring from that
shown on drawings furnished shall
be made without prior approval of the
Johnson Controls representative.
power wiring
chiller with electro-Mechanical starter
A 115 volt – single phase – 60 or 50 Hertz power supply
of 20 amperes must be furnished to the control center,
from the control transformer (2 KVA required) included
with the compressor motor starter. Do NOT make final
power connections to control center until approved by
YORK representative.
oil puMp – 3 phase starter
Separate wiring or a fused disconnect switch should be
supplied by the installer.
sUPPort
ArMs
PAnEl
trACK
Fig. 25 – Control PAnEl PosItIonInG
Remote Electro-Mechanical starters
for the chiller must be furnished in ac-
cordance with YORK Starter Specifica -
tions Product Drawing Form 160.73-
PA1 to provide the features necessary
for the starter to function properly with
the YORK control system.
Each chiller unit is furnished for a specific electrical
power supply as stamped on the Unit Data Plate, which
also details the motor connection diagrams.
To insure proper motor rotation the
starter power input and starter to
motor connections must be checked
with a phase sequence indicator in
the presence of the Johnson Controls
representative.
DO NOT cut wires to final length
or make final connections to motor
terminals or starter power input ter-
minals until approved by the Johnson
Controls representative.
YK Motors (electro-Mechanical starter)
Motor leads are furnished with a crimp type connection
having a clearance hole for a 3/8" bolt, motor terminal
lugs are not furnished. Refer to Wiring Labels in motor
terminal box for hook-up to suit motor voltage and
amperage for power wiring connections.
lD03826