Wye-Delta Start (Ycas1062 - Ycas1263) - York Millennium YCAS Series Installation Operation & Maintenance

Technical Data
WIRING DIAGRAM (YCAS1062 - YCAS1263)
NOTES:
1. Field wiring to be in accordance with the current edi-
tion of the National Electrical Code as well as all other
applicable codes and specifications.
2. Numbers along the right side of a diagram are line
identification numbers. The numbers at each line in-
dicate the line number location of relay contacts. An
unlined contact location signifies a normally closed
contact. Numbers adjacent to circuit lines are the
circuit identification numbers.
3. Any customer supplied contacts must be suitable for
switching 24VDC. (Gold contacts recommended.)
Control Wiring must not be run in the same conduit
with any line voltage wiring.
4. To cycle unit ON and OFF automatically with contact
shown, install a cycling device in series with the flow
switch (FSLW). See Note 3 for contact rating and
wiring specifications. Also refer to cautions on the
page 85A.
5. To stop unit (Emergency Stop) with contacts other
than those shown, install the stop contact between 5
and 1. If a stop device is not installed, a jumper must
be connected between terminals 5 and 1. Device
must have a minimum contact rating of 100VA at
115 volts A.C.
6. Alarm contacts are for annunciating alarm/unit mal-
function. Contacts are rated at 115V, 100VA, resis-
tive load only, and must be suppressed at load by
user.
7. See Installation, Operation and Maintenance Manual
when optional equipment is used.
8. Control panel to be securely connected to earth
ground.
9. Use 2KVA transformer in optional transformer kit un-
less there are optional oil separator sump heaters
which necessitates using a 3KVA transformer.
FIG. 37– CONTROL POWER TRANSFORMER KIT
76
ACROSS-THE-LINE START
WYE-DELTA START
CONTROL POWER TRANSFORMER KIT
AND
T S 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
LEGEND
LD04186
YORK INTERNATIONAL