York YCUL0016, YCUL0130 manual 2.06POWER CONNECTION AND DISTRIBUTION, 2.07ACCESSORIES AND OPTIONS

FORM 150.63-EG1

low suction pressure, high pressure switch, and motor protector. Compressor motor protector shall protect against damage due to high input current or thermal overload of windings.

9.Unit Safeties: Shall be automatic reset and cause compressors to shut down if low ambient, or under voltage.

10.Alarm Contacts: Low ambient, low voltage, low battery, and (per compressor circuit): high discharge pressure, and low suction pressure.

D.Manufacturer shall provide any controls not listed above, necessary for automatic condensing unit operation. Mechanical Contractor shall provide field control wiring necessary to interface sensors to the condensing unit control system.

2.06POWER CONNECTION AND DISTRIBUTION

A.Power Panels:

1.NEMA 3R/12 (IP55) rain/dust tight, powder painted steel cabinets with hinged, latched, and gasket sealed outer doors. Provide main power connection(s), control power connections, compressor and fan motor start contactors, current overloads, and factory wiring.

2.Power supply shall enter unit at a single location, be 3 phase of scheduled voltage, and connect to individual terminal blocks per compressor. Separate disconnecting means and/or external branch circuit protection (by Contractor) required per applicable local or national codes.

B.Exposed compressor, control and fan motor power wiring shall be routed through liquid tight conduit.

2.07ACCESSORIES AND OPTIONS

Some accessories and options supercede standard product features. Your YORK representative will be pleased to provide assistance.

A.Microprocessor controlled, Factory installed Across-the-Line type compressor motor starters as standard.

B.Outdoor Ambient Temperature Control

1.Low Ambient Control: Permits unit operation to 0°F ambient. Standard unit controls to 25°F ambient. Low Ambient Control standard on YCUL0096-0130 models.

2.High Ambient Control: Permits unit operation above 115°F ambient.

C.Power Supply Connections:

1.Single Point Power Supply: Single point Termi- nal Block for field connection and interconnect- ing wiring to the compressors. Separate exter- nal protection must be supplied, by others, in the incoming power wiring, which must comply with the National Electric Code and/or local codes. Single Point Supply option available on YCUL0046-0090 models and standard on YCUL0016 - 0040 models.

2.Single Point or Multiple Point Power Supply with individual System Breakers: Single or Multiple Point Terminal Block(s) for field con nection and factory interconnecting wiring to factory supplied system breakers . Available on YCUL0096-0130 models.

3.Single Point or Multiple Point Disconnect: Single or Dual point Non-Fused Disconnect(s) and lockable external handle (in compliance with Article 440-14 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 YCUL0096-0130 models.

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 YCUL0016-0090 models.

D.Pressure & Temperature Transducers and Sen- sors

1.Discharge Pressure Transducers: Permits unit to sense and display discharge pressure.

2.Suction Pressure Transducers: Permits unit to sense and display suction pressure. This capability is standard on YCUL0076-0090 models. (This option is required for suction pressure control on models YCUL0016-0066.)

3.Suction Temperature Sensors: Permits units to

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