Table 2: Wiring diagram legend
Label
Description
HGBP
Hot gas bypass
HPCO
High pressure cutout
K13, K14, K17 Relays mounted on I/O board. Refer to the operations manual
Form 161.01-OM1
.
L1
Inductor 4 A, 9 mH (460 VAC) or 8 A, 3 mH (230 VAC)
LCWT
Leaving chilled water temperature
LLS
Liquid level sensor (probe)
MBC
Magnetic bearing controller
MOV
Metal oxide varistor
MWT
Motor winding temperature
OVA
Cond. level control actuator
RES
Resistor
Resistance temperature sensing element
Transient supressor
Terminal block, factory wiring
Terminal block, field connection
TB6
Terminal block, field (botttom), factory (top)
TB7
Terminal block, field (botttom), factory (top)
UPS
Uninterruptible power supply
VGD
Variable geometry diffuser
VSOP
Variable speed oil pump
xSOL
Solenoid valve
Field wiring
Factory wiring
Circuit board or enclosure boundary
Jack (J1, J2,…)
Plug (P1, P2, …)
Wire entrance hole in control panel
Option (as and when supplied) by YORK
Mechanical linkage
Shielded cable
Metal oxide varistor
Terminal located in starter (TB1 or 1TB)
Note:
Drawing number: 035-26662-000 REV E, SHT. 5
9
Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller