JOHNSON CONTROLS
FORM 150.67-EG1 (219)
100
2.06 POWER CONNECTION AND DISTRIBUTION
I. Power Panels:
1. NEMA 3R, powder painted steel cabinets with a gasketed protective cover. 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 appli-
cable local or national codes.
J. Compressor, control and fan motor power wiring shall be fully contained within the unit
enclosure, or shall be routed through liquid tight conduit.
2.07 ACCESSORIES AND OPTIONS
Some accessories and options supercede standard product features. Your Johnson Con-
trols representative will be pleased to provide assistance.
K. Microprocessor controlled, Factory installed Across-the-Line type compressor motor
starters as standard.
L. Outdoor Ambient Temperature Control
1. Low Ambient Control: Permits unit operation to 0°F ambient.
2. High AMBIENT Control: Permits unit operation above 115°F ambient.
M. Power Supply Connections:
1. Single Point Power Supply: Single point Terminal Block for eld connection and in-
terconnecting wiring to the compressors. Separate external protection must be sup-
plied, by others, in the incoming power wiring, which must comply with the National
Electric Code and/or local codes. Standard unit controls to 25°F ambient.
2. Single Point or 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 sup-
plied 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.
3. Single Point Circuit Breaker: Single point Terminal Block with Circuit Breaker and
lockable external handle (in compliance with Article 44014 of N.E.C.) can be sup-
plied to isolate power voltage for servicing. Incoming power wiring must comply with
the National Electric Code and/or local codes. Single Point Circuit Breakers avail-
able on YCAL0019-0066 models.
N. Pressure Transducers and Readout Capability
1. Discharge Pressure Transducers: Permits unit to sense and display discharge pres-
sure.
O. Control Power Transformer: Converts unit power voltage to 120-1-60 or 120-1-50 for
50hz (500 VA capacity). Factory- mounting includes primary and secondary wiring be-
tween the transformer and the control panel.
Guide Specifications (Cont'd)
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