Operating instructions

Figure 25, ACZ-B, Typical Field Wiring Diagram
LABEL DWG. 330423201 REV.0D
TO COMPRESSOR(S)
AND FAN MOTORS
DI
SCO
NNE
C
T
(BY OTHERS)
3 PHASE
POWER
120VAC
CONTROL POWER
GND LUG
UNIT MAIN
TERMINAL BLOCK
FUSED CONTROL
CIRCUIT TRANSFORMER
120 VAC
TB1
TB1-20
DX EVAP FAN RELAY
(BY OTHERS)
120 VAC 1.0 AMP MAX
DISCONNECT
(BY OTHERS)
N
FIELD SUPPLIED
OPTION
10A
FUSE
(BY OTHERS)
CONTROL
CIRCUIT
FUSE
120 VAC
GND
ALARM BELL RELAY
FACTORY SUPPLIED ALARM
FIELD WIRED
ALARM BELL
OPTION
CONTROLLER
34
32
2
1
N
120 VAC
33
35
NOTE 1:
A
LL FIELD WIRING TO BE
INSTALLED AS NEC CLASS 1
WIRING SYSTEM WITH CONDUCTOR
RATED 600 VOLTS
TB2
4-20MA FOR
DEMAND LIMIT
(BY OTHERS)
IF REMOTE STOP
CONTROL IS USED,
REMOVE LEAD 585
FROM TERM. 52 TO 72.
585
AUTO
REMOTE STOP SWITCH
(BY OTHERS)
TIME
CLOCK
52
72
71
70
OFF
ON
MANUAL
A
LARM BELL
RELAY
A
LARM BELL OPTION
12
COM NO
43
83
EVAP FLOW SWITCH
---MANDATORY–-
(BY OTHERS)
NOR. OPEN PUMP AUX.
CONTACTS (OPTIONAL)
44
61
GND
N
93
91
N
97
96
24 VAC
24 VAC
LIQUID LINE #1 SOLENOID
24 VAC 1.5 AMP MAX.
HOT GAS BYPASS #2 SOLENOID
24 VAC 1.0 AMP MAX.
N
97
95
24 VAC
HOT GAS BYPASS #1 SOLENOID
24 VAC 1.0 AMP MAX.
N
93
92
24 VAC
LIQUID LINE #2 SOLENOID
24 VAC 1.5 AMP MAX.
LESS EVAPORATOR ONLY
+
-
NOTE 3:
WHEN CONNECTED TO
EVAPORATORS USING
OPTIONAL CIRCUIT CONTROL,
STAGES 1-3 ACTIVATE
COMPRESSORS FOR
CONDENSING UNIT CIRCUIT #1
AND STAGES 4-6 ACTIVATE
COMPRESSORS FOR
CONDENSING UNIT CIRCUIT #2.
STAGING OPERATION IN UNIT
SEQUENCING SETTING
TB3
103
104
101
102
105
106
107
108
109
110
111
112
1
ST
COMPR. - OPPOSITE CIRCUIT
1
ST
COMPR. - EITHER CIRCUIT
2
ND
COMPR. - INITIAL CIRCUIT
2
ND
COMPR. - OPPOSITE CIRCUIT
3
RD
COMPR. - INITIAL CIRCUIT
3
RD
COMPR. - OPPOSITE CIRCUIT
STAGE 2
STAGE 1
STAGE 3
STAGE 4
STAGE 5
STAGE 6
STAGING OPERATION IN CIRCUIT
SEQUENCING SETTING
UNIT
CIRCUIT #1
UNIT
CIRCUIT #2
(SEE NOTE 3)
TB3
103
104
101
102
105
106
107
108
109
110
111
112
2
ND
COMPR. - CIRCUIT #1
1
ST
COMPR. - CIRCUIT #1
3
RD
COMPR. - CIRCUIT #1
1
ST
COMPR. - CIRCUIT #2
2
ND
COMPR. - CIRCUIT #2
3
RD
COMPR. - CIRCUIT #3
STAGE 2
STAGE 1
STAGE 3
STAGE 4
STAGE 5
STAGE 6
54
J20-ID18
(SEE NOTE 2)
NOTE 2:
EVAP. AIR FLOW SWITCH OR
FAN AUX. CONTACT FOR
CIRCUIT #2 FAN WHEN UNIT IS
SET FOR CIRCUIT SEQUENCING
MODE.
IMM ACZ/AGZ-4 ACZ / AGZ-BM 51