Fig. 40 - Connection Diagram 4 Compressor - York YCAS Series Installation Operation & Maintenance

Air-cooled screw liquid chillers
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CAUTION:
No Controls (relays, etc.) should be mount ed in the Smart Panel
en clo sure or con nect ed to pow er sup plies in the control pan el. Ad-
ditionally, con trol wir ing not con nect ed to the Smart Panel should not
be run through the cabinet. This could re sult in nui sance faults.
CAUTION:
Any inductive devices (re lays) wired in series with the fl ow switch
for start/stop, into the Alarm cir cuit ry, or pilot relays for pump
start ers wired through mo tor contactor aux il ia ry con tacts must be
sup pressed with YORK P/N 031-00808-000 sup pres sor across the
re lay/contactor coil.
FIG. 40 – ELEMENTARY DIAGRAM 4 COMPRESSOR
YORK INTERNATIONAL
Any contacts con nect ed to fl ow switch inputs or BAS in puts on
ter mi nals 13 - 19 or TB3, or any oth er ter mi nals, must be sup-
pressed with a YORK P/N 031-00808-000 sup pres sor across the
re lay/con tac tor coil.
CAUTION:
Control wiring con nect ed to the con trol panel should nev er be run in
the same con duit with pow er wir ing.
CONTROL POWER SUPPLY
CONTROL
UNIT
POWER
VOLTAGE
SUPPLY
ALL MODELS
115-1-50/60
W/O TRANS.
MODELS
-17
200-1-60
WITH
-28
230-1-60
TRANS.
-46
400-1-60
*
-58
575-1-60
* All primary and secondary wiring between transformer and control panel in clud ed.
FORM 201.19-NM8 (804)
LD010045
MIN
MAX DUAL
NON-FUSED
CIRCUIT
ELEMENT
DISC.
AMP.
FUSE SIZE
SWITCH SIZE
20A
20A 250V
30A 240V
15A
15A 250V
30A 240V
15A
15A 250V
30A 240V
8A
8A 600V
30A 480V
8A
8A 600V
30A 600V
79

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