Accessories; Aternative Chilled Fluid Applications - York YCRS Series Installation, Operation And Maintenance Manual

FLOW SWITCH – The flow switch or its equivalent
must be furnished 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 – Alterna-
tive to the above mentioned Flow Switch. Pretemco
Model DPS 300A-P4OPF-82582-S (20.7bar max work-
ing pressure). SPDT 5 amp 125/250VAC switch. Range:
0 - 2.8 bar, deadband: 0.003 - 0.005bar, with 1/4 NPTE
pressure connections.
LANGUAGE LCD AND KEYPAD – Standard dis-
play language and keypad is in English. Spanish is avail-
able as an option.
PRINTER KIT – Printer for obtaining printout of unit
operating and history data. (Field-mounted)
MULTIPLE UNIT SEQUENCE CONTROL (Field-
mounted) – Sequencing 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 (inter-
connecting wiring by others).
PRESSURE VESSEL CODES – Coolers and con-
densers can be supplied in conformance with the fol-
lowing 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-connections 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)
FINAL PAINT – The unit can be painted with an op-
tional coat of Caribbean Blue overspray paint. (Factory)
YORK INTERNATIONAL
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 deflection 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 minimum 1.0g
accelerated force in all directions to 2". Level ad-
justable, deflection may vary slightly by applica-
tion. (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 Tempera-
ture. To protect against nuisance safety trips below 40°F
(4.4°C) and reduce the possibility of cooler damage due
to freezing during chiller operation, the unit micropro-
cessor automatically unloads the compressors at ab-
normally low suction temperature (pressure) conditions,
prior to safety shutdown.
• Process Brine Option – Process or other applica-
tions requiring 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 re-
quires special capabilities from a chiller, including
the ability to 'charge' an ice storage tank, then pos-
sibly automatically reset for operation at elevated
Leaving Chilled Fluid Temperatures as required by
automatic 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 201.25-NM1 (302)
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