035-19569-101 (0109)
4-7
GB
4.15 Unit Piping
Compressor lubricant piping and system external piping
are factory installed on all units shipped assembled.
On units shipped dismantled, the lubricant piping to oil
sump and oil cooler and system oil return connections
should be completed, under the supervision of the York
representative, using material furnished. See Form
160.73-N3.
4.16 Control Panel Positioning
(See Figure 4.5)
On units with H9 and K1-K7 compressors, the control
panel is placed in a position above the evaporator for
shipping. For units with P and Q compressors the control
panel is not adjustable. To move the control panel into
position for operation, proceed as follows:
1. While supporting the control panel, remove the
hardware between the support arms and the
evaporator.
2. Swing the control panel into a vertical position.
3. Slide the control panel down the guide rails to the
proper position. Tighten securely.
4. Discard unused hardware.
Figure 4.5 Control Panel Positioning
4.17 Control Wiring
On units shipped disassembled, after installation of the
control panel, control wiring must be completed between
unit components and control panel, solid state starter, or
variable speed drive, when used, using wiring harness
furnished. Refer to Form 160.73-N3.
Field wiring connections for control modifi cations (by
others) if required, are shown on Form 160.73-PW7.
No deviations in unit wiring from that shown on drawings
delivered shall be made without prior approval of the
York representative.
4.18 Power Wiring
Chiller with Electro-Mechanical Starter
A 115 V, 1 Ø, 50 Hz supply of 15 amperes must be
supplied to the control panel, from the control transformer
(2 kVA required) included with the compressor motor
starter. DO NOT make fi nal power connections to control
centre until approved by York representative.
Oil Pump – 3 Phase Starter
Separate wiring or a fused disconnect switch should be
supplied by the installer.
Remote Electro-Mechanical Starter
CAUTION
Remote Electro-Mechanical starters for the
chiller must be furnished in accordance with
York Standard R-1051 (Product Drawing
Form 160.45-PA5.1) to provide the features
necessary for the starter to function properly
with the York control system.
Each unit is furnished for a specifi c electrical power
supply as stamped on the Unit Data Plate, which also
details the motor connection diagrams.
CAUTION
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 York representative.
NOTE
DO NOT cut wires to fi nal length or make fi nal
connections to motor terminals or starter power
input terminals until approved by the York
representative.
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