FORM 150.52-W1
9
YORK INTERNATIONAL
NOTES (pages 4 - 9)
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 430-24. If a Factory Mounted Control Transformer is provided, add the following to
the system #2 MCA values in the YCAR Tables: -17, add 10 amps; -28, add 9 amps; -40, add 5 amps; -46, add 4 amps; -58, add 3 amps.
2. The recommendation disconnect switch is based on a minimum of 115% of the summation rated load amps of all the loads included in the
circuit, per N.E.C. 440 - 12A1.
3. Minimum fuse size is based on 150% of the largest motor RLA plus 100% of the remaining RLAs (U.L. Standard 1995, Section 36.1).
Minimum fuse rating = (1.5 x largest compressor RLA) + other compressor RLAs + (# fans x each fan motor FLA).
4. Maximum dual element fuse size is based on 225% maximum plus 100% of the rated load amps for all other loads included in the circuit,
per N.E.C. 440-22. Maximum fuse rating = (2.25 x largest compressor RLA) + other compressor RLAs + (# fans x each fan motor FLA).
5. Minimum circuit breaker is 150% maximum plus 100% of rated load amps included in the circuit, per circuit per U.L. 1995 Fig. 36.2.
Minimum circuit breaker rating = (1.5 x largest compressor RLA) + other compressor RLAs + (# fans x each fan motor FLA).
6. Maximum circuit breaker is based on 225% maximum plus 100% of the rated load amps for all loads included in the circuit, per circuit,
per U.L. 1995 Fig. 36.2. Maximum circuit breaker rating = (2.25 x largest compressor RLA) + other compressor RLAs + ( # fans x each
fan motor FLA).
7. The Incoming Wire Range is the minimum and maximum wire size that can be accommodated by unit wiring lugs. The (1), (2), or (3)
indicate the number of termination points or lugs which are available per phase. Actual wire size and number of wires per phase must
be determined based on ampacity and job requirements using N.E.C. wire sizing information. The above recommendations are based
on the National Electric Code and using copper connectors only. Field wiring must also comply with local codes.
8. A ground lug is provided for each compressor system to accommodate field grounding conductor per N.E.C. Article 250-54. A control
circuit grounding lug is also supplied. Incoming ground wire range is #6 - 350 MCM.
9. The field supplied disconnect is a “Disconnecting Means” as defined in N.E.C. 100.B, and is intended for isolating the unit from the
available power supply to perform maintenance and troubleshooting. This disconnect is not intended to be a Load Break Device.
SYSTEM #1
SYSTEM #2
MODEL
VOLTS
COMPRESSOR DATA
FAN DATA
11, 12
COMPRESSOR DATA
FAN DATA
11,12
YCAR
RLA
PW-LRA
X-LRA
QTY
FLA
LRA
RLA
PW-LRA
X-LRA
QTY
FLA
LRA
(EA.)
(EA)
(EA)
(EA)
380
116
429
552
3
4.8
23
116
429
552
3
4.8
23
0100SC
460
92
360
463
3
3.8
19
92
360
463
3
3.8
19
575
74
286
368
3
3.1
15.2
74
286
368
3
3.1
15.2
380
148
557
707
3
4.8
23
116
429
552
3
4.8
23
0110SC
460
117
461
585
3
3.8
19
92
360
463
3
3.8
19
575
94
375
475
3
3.1
15.2
74
286
368
3
3.1
15.2
380
148
557
707
3
4.8
23
148
557
707
3
4.8
23
0120SC
460
117
461
585
3
3.8
19
117
461
585
3
3.8
19
575
94
375
475
3
3.1
15.2
94
375
475
3
3.1
15.2
380
165
623
769
3
4.8
23
148
557
707
3
4.8
23
0130SC
460
131
519
641
3
3.8
19
117
461
585
3
3.8
19
575
105
415
513
3
3.1
15.2
94
375
475
3
3.1
15.2
380
165
623
769
4
4.8
23
165
623
769
4
4.8
23
0140SC
460
131
519
641
4
3.8
19
131
519
641
4
3.8
19
575
105
415
513
4
3.1
15.2
105
415
513
4
3.1
15.2
380
207
767
961
4
4.8
23
165
623
769
4
4.8
23
0150SC
460
164
639
801
4
3.8
19
131
519
641
4
3.8
19
575
131
507
635
4
3.1
15.2
105
415
513
4
3.1
15.2
380
207
767
961
4
4.8
23
207
767
961
4
4.8
23
0170SC
460
164
639
801
4
3.8
19
164
639
801
4
3.8
19
575
131
507
635
4
3.1
15.2
131
507
635
4
3.1
15.2
380
237
767
961
4
4.8
23
207
767
961
4
4.8
23
0180SC
460
188
639
801
4
3.8
19
164
639
801
4
3.8
19
575
150
507
635
4
3.1
15.2
131
507
635
4
3.1
15.2
380
237
767
961
5
4.8
23
237
767
961
5
4.8
23
0190SC
460
188
639
801
5
3.8
19
188
639
801
5
3.8
19
575
150
507
635
5
3.1
15.2
150
507
635
5
3.1
15.2
380
288
1105
1424
5
4.8
23
237
767
961
5
4.8
23
0200SC
460
228
910
1173
5
3.8
19
188
639
801
5
3.8
19
575
182
737
950
5
3.1
15.2
150
507
635
5
3.1
15.2
380
288
1105
1424
5
4.8
23
288
1105
1424
5
4.8
23
0230SC
460
228
910
1173
5
3.8
19
228
910
1173
5
3.8
19
575
182
737
950
5
3.1
15.2
182
737
950
5
3.1
15.2
