Accessories & Options - York STYLE A YCWS User Manual

Accessories & Options
ALTERNATIVE REFRIGERANTS - Contact your nearest YORK of-
fice for information and availability on alternative HFC refrigerants.
ELECTRICAL OPTIONS:
MULTIPLE POINT POWER SUPPLY CONNECTION -
Standard field power wiring connection on all models is Multiple
Point Power Connection to factory provided Terminal Blocks. Two
field supplied electrical power circuits with appropriate branch cir-
cuit protection provide power to each of two motor control center
cabinets, located on either side of the Control panel on the front of
the chiller. Each cabinet contains starter elements for one com-
pressor.
Optional to the Terminal Blocks for field power connection are
Non-Fused Disconnects or Circuit Breaker Switches with external,
lockable handles.
SINGLE POINT POWER CONNECTION - (Factory Mounted) An
optional configuration for field connection of a single electrical cir-
cuit to: either Terminal Block or Non-Fused Disconnect Switch with
lockable external handle (in compliance with Article 440 of N.E.C.,
to isolate unit power supply for service). Factory wiring is pro-
vided from the Terminal Block or Disconnect Switch to Factory
supplied individual system Circuit Breakers, Non-Fused Disconnect
switch with external, lockable handle or J Class Fuses/Fuse Block
in each of the two compressor motor control centers. (Note: Single
Point Non-Fused Disconnect Switch will not be supplied with indi-
vidual system Non Fused Disconnect Switches with external, lock-
able handles in each of the two compressor motor control cen-
ters).
65 Ka HIGH VOLTAGE PROTECTION - Non-Fused Disconnect
Switch with fuses (200 & 575V) or Circuit Breakers (230, 380, &
460V) are used for applications where customers have a require-
ment for single point wiring with high "fault current" withstanding
capability. This option provides between 50Ka and 65Ka withstand
protection to the equipment.
BUILDING AUTOMATION SYSTEM INTERFACE (Factory
Mounted) – Provides means to reset the leaving chilled liquid
temperature or percent full load amps (current limiting) from the
BAS (Factory Mounted):
• Printed circuit board to accept 4 to 20 milliamp, 0 to 10 VDC,
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 standard onboard RS485 port.
FLOW SWITCH – The flow switch or its equivalent must be fur-
nished with each unit. 150 PSIG (10.5 bar) DWP – For standard
units. Johnson Controls model F61MG-1C Vapor-proof SPDT, NEMA
4X switch (150 PSIG [10.5 bar] DWP), -20°F to 250°F- (29°C to
121°C), with 1" NPT connection for upright mounting in horizontal
pipe. (Field mounted)
DIFFERENTIAL PRESSURE SWITCH - Alternative to the above men-
tioned Flow Switch. Pretemco Model DPS 300A-P4OPF-82582-S
(20.7bar max working pressure). SPDT 5 amp 125/250 VAC switch.
Range: 0 - 2.8bar, deadband: 0.003 - 0.005bar, with 1/4 NPTE pres-
sure connections.
LANGUAGE LCD AND KEYPAD - Standard display language and
YORK INTERNATIONAL
keypad is in English. Spanish is available as an option.
PRINTER KIT - Printer for obtaining printout of unit operating and
history data. (Field Mounted)
MULTIPLE UNIT SEQUENCE CONTROL (Field Mounted) - Se-
quencing Control with automatic unit sequencing. Necessary items
for operation and control of up to eight units with parallel water
circuits. Includes software and mixed liquid temperature sensor
(interconnecting wiring by others).
PRESSURE VESSEL CODES - Coolers and condensers can be
supplied in conformance with the following pressure codes:
A.S.M.E. (Standard)
CHICAGO CODE RELIEF VALVES (Factory Mounted) - Unit will be
provided with relief valves to meet Chicago Code requirements.
ACCESSORIES:
FLANGES (Weld Type) – Consists of 150 PSI (10.5 bar ) standard
cooler (150 lb) R.F. flanges to convert to flanged cooler-connec-
tions and includes companion flanges. (Field mounted)
FLANGES (Victaulic Type) – Consists of (2) Flange adapter for
grooved end pipe (standard 150 PSI [10.5 bar] cooler). Includes
companion flanges. (Field mounted)
VIBRATION ISOLATION:
• Neoprene Isolators – Recommended for normal installations.
Provides very good performance in most applications for the
least cost. (Field mounted)
• 1" Spring Isolators – Level adjustable, spring and cage type
isolators for mounting under the unit base rails. 1" nominal de-
flection may vary slightly by application. (Field mounted)
• 2" Seismic Spring Isolators – Restrained Spring-Flex Mountings
incorporate a rugged welded steel housing with vertical and
horizontal limit stops. Housings designed to withstand a mini-
mum 1.0g accelerated force in all directions to 2". Level adjust-
able, deflection may vary slightly by application. (Field-mounted)
ALTERNATIVE CHILLED FLUID APPLICATIONS:
Standard water chilling application range is 40°F to 50°F (4.4°C to
10°C) Leaving Chilled Water Temperature. To protect against nui-
sance safety trips below 40°F (4.4°C) and reduce the possibility of
cooler damage due to freezing during chiller operation, the unit
microprocessor automatically unloads the compressors at abnor-
mally low suction temperature (pressure) conditions , prior to safety
shutdown.
• Process Brine Option – Process or other applications requir-
ing chilled fluid below 40°F (4.4°C) risk water freezing in the
evaporator, typically overcome by using antifreeze. For these
applications, the chiller system incorporates brine (ethylene or
propylene glycol solution), and the system design Leaving Chilled
Fluid Temperature must be provided on the order form to ensure
proper factory configuration.
• Thermal Storage Option – Thermal Storage equires special
capabilities from a chiller, including the ability to 'charge' an ice
storage tank, then possibly automatically reset for operation at
elevated Leaving Chilled Fluid Temperatures as required by au-
tomatic building controls. The Thermal Storage Option provides
Ice Storage duty Leaving Chilled Fluid setpoints from 25°F to
15°F( -4°C to -10°C) minimum during charge cycle, with a Reset
range of 36°F (20°C) supply fluid temperature.
FORM 201.24-EG1
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