McQuay AGS 230A' AGS 230B - Field Wiring Diagram

64 OM AGSB-5
Field Wiring Diagram
Figure 12, Typical Field Wiring Diagram
LABEL DWG. 330803901 REV. 0D
TO COMPRESSOR(S)
AND FAN MOTORS
DISCONNECT
(BY OTHERS)
3 PHASE
POWER
SUPPLY
GND LUG
UNIT
MAIN
TERMINAL BLOCK
FUSED CONTROL
CIRCUIT TRANSFORMER
120 VAC
NOTE: ALL FIELD WIRING TO BE
INSTALLED AS NEC CLASS 1
WIRING SYSTEM WITH CONDUCTOR
RATED 600 VOLTS
TB1
(115 VAC)
TB1-2
1
82
2
CHW PUMP RELAY #1
(BY OTHERS)
120 VAC 1.0 AMP MAX
N
120 VAC
85
2
CHW PUMP RELAY #2
(BY OTHERS)
120 VAC 1.0 AMP MAX
N
120 VAC
81
75
24 VAC
ALARM BELL RELAY
FACTORY SUPPLIED ALARM
FIELD WIRED
ALARM BELL
OPTION
TB1
(24 VAC OR 30 VDC)
71
72
69
60
67
NOR. OPEN PUMP AUX.
CONTACTS (OPTIONAL)
CHW FLOW SWITCH
---MANDATORY–-
(BY OTHERS)
PE
PE
IF REMOTE STOP CONTROL
IS USED, REMOVE LEAD 897
FROM TERM. 40 TO 53.
897
60
66
A
UTO
ON
OFF
MANUAL
60
68
A
UTO
ON
OFF
MANUAL
REMOTE STOP
SWITCH
(BY OTHERS)
ICE MODE
SWITCH
(BY OTHERS)
TIME
CLOCK
70
4-20MA FOR
CHW RESET
(BY OTHERS)
4-20MA FOR
DEMAND LIMIT
(BY OTHERS)
-
+
-
+
GND
*COMMUNICATIO
N
PORT
J11
Rx-/Tx-
Rx-/Tx-
GND
CONTROLLER
BLACK
WHITE
GREEN
24 VAC
24 VAC