York Millennium YCAS 216X, Installation Operation & Maintenance

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YORK INTERNATIONAL
FIG. 15 – YCAS 216X - 266X ELEMENTARY DIAGRAM – WYE-DELTA START
YCAS 216X - 266X WIRING DIAGRAM
WYE-DELTA START
POWER CIRCUIT OPTIONS STANDARD DUAL COMPRESSOR POWER SUPPLIES
LD01201(D)
LD01201(D)
NOTES:
1. Field wiring to be in accordance with the current edition of the
National Electrical Code as well as all other applicable codes and
specifications.
2. Contacts must be suitable for switching 24VDC (gold contacts
recommended). Wiring shall not be run in the same conduit with
any line voltage wiring.
3. To cycle unit on and off automatically with contact shown, install
a cycling device in series with the flow switch (FLSW). See Note
2 for contact rating and and wiring specifications.
4. To stop unit (emergency stop) with contacts other than those
shown, install the stop contact between terminals 5 and 1. If a
stop device is not installed, a jumper must be connected be-
tween terminals 5 and 1. Device must have a minimum contact
rating of 100VA at 115 Volts A.C.
5. Alarm contacts are for annunciations alarm/unit malfunction. con-
tacts are rated at 115V, 100VA, resistive load only, and must be
suppressed at load by user.
6. See installation, operation and maintenance manuals when op-
tional equipment is used.
7. Use 2 KVA transformer inoptional transformer kit unless there
are optional oil separator sump heaters which necessitates us-
ing 3 KVA transformers.
8. Power factor correction capacitors may be installed on the chiller
electrical system (as shown) as a field supplied option. The power
factor correction capacitors must be installed in accordance with
the National Electrical Code Article 460 as well as all other appli-
cable codes and specifications. Power factor correction capaci-
tors may be installed only on the line side of the chiller electrical
system with correction not to exceed a PF of more than 0.96. A
separate disconnect switch, over current protection and dis-
charge resistors are required.
LEGEND
Transient Voltage Suppression
Terminal Block for Customer Connections
Terminal Block for Customer Low Voltage
(Class 2) Connections. See Note 2
Terminal Block for YORK Connections Only
Wiring and Components by YORK
Optional Equipment
Wiring and/or Components by Others
T S