York YCAL0065, YCAL0041 manual York International

FORM 150.64-EG1

of N.E.C.) can be supplied to isolate the unit power voltage for servicing. Separate external fusing must be supplied, by others, in the in coming power wiring, which must comply with the National Electric Code and/or local codes.

4.Single Point Disconnect with Individual System Breakers: Single point Terminal Block with Non- Fused Disconnect and lockable external handle (in compliance with Article 440-14 of N.E.C.) can be supplied to isolate power voltage for servicing. Factory interconnecting wiring from disconnect to factory supplied circuit breakers. Available on YCAL0041-0065.

5.Single Point Circuit Breaker: Single point Ter- minal Block with Circuit Breaker and lockable external handle (in compliance with Article 440 14 of N.E.C.) can be supplied to isolate power voltage for servicing. Incoming power wiring must comply with the National Electric Code and/or local codes. Single Point Circuit Break ers available on YCAL0041-0065 models.

D.Pressure Transducers and Readout Capability

1.Discharge Pressure Transducers: Permits unit to sense and display discharge pressure. Stan- dard on YCAL0080-0134 models.

E.Control Power Transformer: Converts unit power voltage to 120-1-60 (500 VA capacity). Factory- mounting includes primary and secondary wiring between the transformer and the control panel.

F.Motor Current Module: Capable of monitoring com- pressor motor current. Provides extra protection against compressor reverse rotation, phase-loss and phase imbalance. Option consists of one mod- ule per electrical system. (Factory-mounted.)

G.Power Factor Correction Capacitors: Provided to correct unit compressor factors to a 0.90-0.95.

H.Condenser Coil Environmental Protection:

1.Pre-Coated: Epoxy coated aluminum fin stock to guard from corrosive agents and insulate against galvanic potential. For mild seashore or industrial locations.

2.Copper Fin: Provide copper fins in lieu of alumi- num.

3.Post-Coated Dipped: Dipped-cured coating on condenser coils for seashore and other corro- sive applications (with the exception of strong alkalis, oxidizers, and wet bromine, chlorine and fluorine in concentrations greater than

100ppm).

I.Protective Chiller Panels (Factory or Field Mounted

1.Louvered Panels (condenser coils only): Painted steel as per remainder of unit cabinet, over external condenser coil faces.

2.Wire Panels (full unit): Heavy gauge, welded wire-mesh, PVC -coated to resist corrosion, to pro- tect condenser coils from incidental damage and restrict unauthorized access to internal components.

3.Louvered Panels (full unit): Painted steel as per remainder of unit cabinet, to protect condenser coils from incidental damage, visually screen internal components, and prevent unauthorized access to internal components.

4.Louvered/Wire Panels: Louvered steel panels on external condenser coil faces, painted as per remainder of unit cabinet. Heavy gauge, welded wire-mesh, coated to resist corrosion, around base of machine to restrict unauthorized access.

J.Flow Switch (Field-mounted): Vapor proof SPDT, NEMA 4X switch ( ___150 PSIG or ___300 PSIG), -20°F to 250°F.

K.Differential Pressure Switch: Alternative to an above mentioned flow switch. Pretempco model DPS300A-P40PF-82582-5 (300 psi max. working pressure) SPDT 5 amp 125/250VAC switch, Range 0 - 40 PSID, deadband 0.5 - 0.8 psi, with 1/4” NPTE Pressure Connections.

L.Evaporator options:

1.Provide 1½" cooler insulation in lieu of standard ¾".

2.Provide DX Cooler with 300 PSIG water-side design working pressure in lieu of standard 150 PSIG.

3.Provide Raised Face Flanges for field instal- lation on cooler nozzles and field piping:

a.150 PSIG, welded Flanges.

b.300 PSIG, welded Flanges.

M.Service Isolation valves: Service suction and dis charge (ball type) isolation valves are added to unit per system. This option also includes a system high pressure relief valve in compliance with ASHRAE 15. (Factory-mounted.)

N.Remote Cooler: Manufacturer shall provide sep-

arately: chiller less evaporator, leaving and return

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