York YLUA0078 Installation Operation & Maintenance page 57

FORM 150.73-NM1
ISSUE DATE: 09/04/2020
a. This drawing is based on IEC symbols.
Field wiring to be in accordance with the relevant electrical code as well as all other applicable codes and
b.
specifications.
c. All sources of supply shown on this diagram to be taken from one main isolator, not shown or supplied by YORK.
Green and yellow wire is used for earth, multi-colored cable used for low voltage. Red wire used for AC Control,
d. blue wire for neutral, black wire for AC and DC power. Orange wire should be used for interlock control wiring
supplied by external source.
Legend designation depicts component abbreviations. Number prefix located, if applicable, on schematic circuit,
e.
refers to system thereon, E.G. = 1-FHP2 refers to high pressure cutout no 2 on system no 1.
All wiring to control section voltage free contacts requires a supply provided by the customer maximum voltage
120 volts. The customer must take particular care when deriving the supplies for the voltage free terminals
with regard to a common point of isolation. Thus, these circuits when used must be fed via the common point
f. of isolation the voltage to these circuits is removed when the common point of isolation to the unit is opened.
This common point of isolation is not supplied by YORK. The YORK voltage free contacts are rated at 100va.
All inductive devices {relays} switch by the YORK voltage free contacts must have their coil suppressed using
standard R/C suppressors.
g. Customer voltage free contacts connected to terminal 13 must be rated at 30V 5ma.
No controls {relays etc.} Should be mounted in any section of the control panel. Additionally, control wiring not
h. connected to the YORK control panel should not be run through the panel. If these precautions are not followed,
electrical noise could cause malfunctions or damage to the unit and its controls.
I 120/14.3 -(Signal Input) i.e. 120 is wire # and 14.3 refers to sht. 14 column 3
A NOTES
Refer to installation commissioning operation and maintenance manual for customer connections and customer
1
connection notes, non compliance to these instructions will invalidate unit warranty.
Wiring and components for compressor 3 only fitted when unit has 3 compressors on the system. 1-BMP3 is
2
replaced by a link across terminals 134 and 135. 2-BMP3 is replaced by a link across terminals 234 and 235.
When not fitted 1-FHP2 is replaced by a link across terminals 132 and 139. 2-FHP2 is replaced by a link across
3
terminals 232 and 239.
4 Fitted on units with hot gas bypass option.
5
EMS option is wired as shown.
6 This wiring must be used for old display 031-0110-000.
7 Network connection point.
8 Printer port.
9 Remote emergency stop can be wired between terminal L and 5 after removing link.
10
Power factor correction accessory. Power factor correction fitted to each compressor contactor.
Not fitted on compressors with internal motor protection. For system 1 terminals 132 and 133, 133 and 134 and
11
134 and 135 are linked. For system 2 terminals 232 and 233, 233 and 234 and 234 and 235 are linked.
12 Only fitted on systems with 3 or 4 fans.
13 Only fitted on systems with 4 fans.
14 Only fitted on systems with 5 fans.
15 Only fitted on systems with 6 fans.
16
Input switch disconnect (standard on CE units) or circuit breaker option replaces input terminal block.
17 Input switch disconnect and individual system circuit breaker option replaces input terminal block.
115V control circuit requires a 115V supply unless control circuit transformer -T2 and -F3 are fitted
18
(standard on CE units).
JOHNSON CONTROLS
Electrical Notes And Legend (Continued)
GENERAL
SECTION 5 – TECHNICAL DATA
035-21966-101 REVG
57
5 5