York YCAL0014E Series, Installation Operation & Maintenance

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JOHNSON CONTROLS
28
FORM 150.62-NM8 (1020)
INSTALLATION
ELECTRICAL NOTES AND LEGEND
1. Minimum Circuit Ampacity (MCA) is based on
125% of the rated load amps for the largest motor
plus 100% of the rated load amps for all other loads
included in the circuit, per N.E.C. Article 430.33.
If the Factory-mounted Control Transformer is
provided, add the following to the system MCA
values in the electrical tables for the system
supplying power to the optional transformer. -17,
add 2.5 amps; -28, add 2.3 amps; -40, add 1.5 amps,
-46, add 1.3 amps; -58, add 1 amp.
2. The minimum recommended disconnect switch is
based on 115% of the rated load amps for all loads
included in the circuit, per N.E.C. Article 440.12
(A) 1.
3. Minimum fuse size is based upon 150% of the rated
load amps for the largest motor plus 100% of the
rated load amps for all other loads included in the
circuit to avoid nuisance trips at startup due to lock
rotor amps. It is not recommended in applications
where brown outs, frequent starting and stopping of
the unit, and/or operation at ambient temperatures
in excess of 95°F is anticipated.
4. Maximum fuse size is based upon 225% of the rated
load amps for the largest motor plus 100% of the
rated load amps for all other loads included in the
circuit, per N.E.C. Article 440.22.
5. Circuit breakers must be U.L. listed and CSA
certified and maximum size is based on 225% of the
rated load amps for the largest motor plus 100% of
VOLTAGE CODE
-17 = 200-3-60
-28 = 230-3-60
-40 = 380-3-60
-46 = 460-3-60
-58 = 575-3-60
LEGEND
ACR-LINE ACROSS -THE-LINE START
C.B. CIRCUIT BREAKER
D.E. DUAL ELEMENT FUSE
DISC SW DISCONNECT SWITCH
FACT MOUNT CB FACTORY-MOUNTED CIRCUIT BREAKER
FLA FULL LOAD AMPS
HZ HERTZ
MAX MAXIMUM
MCA MINIMUM CIRCUIT AMPACITY
MIN MINIMUM
MIN NF MINIMUM NON FUSED
RLA RATED LOAD AMPS
S.P. WIRE SINGLE-POINT WIRING
UNIT MTD SERV SW
UNIT MOUNTED SERVICE (NON-FUSED
DISCONNECT SWITCH)
LRA LOCKED ROTOR AMPS
Field Wiring
Factory Wiring
LEGEND:
the rated load amps for all other loads included in
the circuit. Exception: YCAL0014 and YCAL0020
must have the optional factory overloads installed
to use a standard circuit breaker. Otherwise, HACR-
type circuit breakers must be used. Maximum
HACR circuit breaker rating is based on 225% of
the rated load amps for the largest motor plus 100%
of the rated load amps for all other loads included
in the circuit.
6. The “Incoming Wire Range” is the minimum and
maximum wire size that can be accommodated by
the unit wiring lugs. The (2) preceding the wire
range indicates the number of termination points
available per phase of the wire range specified.
Actual wire size and number of wires per phase
must be determined based on the National Electrical
Code, using copper connectors only. Field wiring
must also comply with local codes.
7. A ground lug is provided for each compressor system
to accommodate a field grounding conductor per
N.E.C. Table 250.122. A control circuit grounding
lug is also supplied.
8. The supplied disconnect is a “Disconnecting Means”
as defined in the N.E.C. 100.I, and is intended for
isolating the unit for the available power supply
to perform maintenance and troubleshooting. This
disconnect is not intended to be a Load Break
Device.
9. Field wiring by others which complies to the
National Electrical Code and local codes.