York YCWS0313SC, Инструкция по установке, эксплуатации и обслуживанию, Страница: 18 / 104

YORK INTERNATIONAL
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ant systems. The display will show the ‘highest prior-
ity’ information as determined by the microprocessor.
The main categories of messages are: General Status
Messages; Unit Warnings; Anticipation Control Status
Messages; Chiller Fault Status Messages; System Fault
Status Messages.
Display Keys
Each key provides a real-time display of commonly re-
quired information about the chiller and individual re-
frigerant system operating conditions and settings. This
is particularly useful during commissioning, monitor-
ing the operation of the chiller, diagnosing potential
future problems and service troubleshooting. Param-
eters may be displayed in Imperial (°F and PSIG) or
Metric (°C and bar) units.
Print Keys
These keys allow control panel display or remote print-
out of both current real-time operating and programmed
data as well as fault history data from the most recent
six safety shutdowns.
Entry Keys
The numeric and associated keys are used for enter-
ing data required for programming the chiller. The
‘ENTER’ and ‘
á
’ ‘
â
’ keys are also used for scroll-
ing through information available after pressing other
keys.
Setpoints Keys
These keys are used for display and programming of
the local and remote offset chilled liquid temperature
setpoints.
Clock Keys
These keys are used for display and programming of
the clock and operating schedule for the chiller.
Program Key
This key is used for display and programming of the
chiller operational settings and limits.
ACCESSORIES AND OPTIONS
Power Supply Options (All Models)
Units are available with either single-point or multi
point power supply connections:
Single-Point Power Supply Connection – One field
provided 400V, 3Ø, 50 Hz supply to the unit with cir-
cuit protection. Field connections to factory provided
terminal block or door interlocked non-fused discon-
nect switch in the common input section. Internal
branch door interlocked circuit breakers or fuses for
each circuit in the two power panels. The control sys-
tem supply is derived internally.
Multi Point Power Supply Connection – Two field
provided 400V, 3Ø, 50 Hz supplies to the unit with
circuit protection. Field connections to factory provided
terminal block or door interlocked circuit breakers in
each of the two NFDS Power Panels.
Building Automation System (BAS) Interface
Provides a means to reset the leaving chilled liquid tem-
perature and/or percent full load amps (current limit-
ing) from the BAS (Factory-mounted):
Printed circuit board to accept 4 to 20mA, 0 to 10VDC,
or dry contact closure input from the BAS.
A YORK ISN Building Automation
System can provide a Pulse Width
Modulated (PWM) signal direct to the
standard control panel via the stan-
dard on-board RS485 port.
Multi-Unit Sequence Control
A factory-mounted Sequencing Control Center to man-
age sequencing control of up to eight chillers in paral-
lel based on mixed liquid temperature (interconnect-
ing wiring by others).
Pressure Vessel Codes
Coolers and condensers can be supplied in conform-
ance with the following pressure vessel codes:
• A.S.M.E. (Standard)
VIBRATION ISOLATION
Neoprene Pad Isolation – Recommended for normal
installations. (Field-mounted)
1" (25 mm) spring isolators – Level adjustable, spring
and cage type isolators for mounting under the unit base
rails. (Field-mounted)
Product Description