LEGEND
AHU
AIR HANDLING UNIT
AI
ANTI ICE THERMOSTAT
AR
AUXILIARY RELAY
ATB
AUXILIARY TERMINAL BLOCK
CAP
CAPACITOR
CC
COMPRESSOR CONTACTOR
CB
CIRCUIT BREAKER
C. HTR CRANKCASE HEATER
COMP
COMPRESSOR
CR
CONTROL RELAY
FM
FAN MOTOR (CONDENSER)
FMC
FAN MOTOR CONTACTOR
FR
FAULT RELAY
FCS
FAN CYCLING SWITCH
HPS
HIGH PRESSURE SWITCH
HVTB
HIGH VOLTAGE TERMINAL BLOCK
JP
JUMPER
L1
LINE 1
L2
LINE 2
L3
LINE 3
LPS
LOW PRESSURE SWITCH
LUG
LUG GROUND
PDS
PUMP DOWN SOLENOID
PDSR
PUMP DOWN SOLENOID RELAY
RR
RESET RELAY
SSPS
SOLID STATE PROTECTION SYSTEM
SD
SMOKE DETECTOR
TRANS TRANSFORMER
T'STAT THERMOSTAT
UVM
UNDER VOLTAGE MONITOR
VFC
VOLT FREE CONTACT
YR
COOLING RELAY
FIELD WIRING
DISCONNECT TAB - 1/4"
SPLICE-CLOSED END
TYPICAL SCHEMATIC WIRING DIAGRAM
_ _ _
+
NOTES
1. POWER SUPPLY, REFER TO UNIT NAMEPLATE.
2. ANY WIRE REPLACEMENT SHOULD BE OF THE 90
0
C
OR ITS EQUIVALENT.
USE COPPER CONDUCTOR WIRES ONLY.
3. POWER MUST BE SUPPLIED TO CRANKCASE
HEATER FOR MINIMUM OF 12 HOURS PRIOR TO
SYSTEM START UP.
IF POWER IS OFF 6 HOURS OR MORE, CRANKCASE
HEATER MUST BE ON FOR 12 HOURS BEFORE
OPERATING THE SYSTEM.
FAILURE TO FOLLOW THESE INSTRUCTIONS MAY
RESULT IN COMPRESSOR DAMAGE.
4. FUSED DISCONNECT SWITCH OR CIRCUIT
BREAKER TO BE PROVIDED BY END USER WITH
RATING AS RECOMMENDED BY ZAMIL.
5. ATB (3) & (5) IS APPLICABLE FOR PDS OPTION UNITS
ONLY.
6. ALLOW 2-3 MINUTES FOR SSPS SWITCH TO CLOSE,
BEFORE STARTING THE UNIT.
7. USE DISCONNECT TAB OR SPLICE ONLY WHERE
EVER REQUIRED FOR EXTENSION OF ORIGINAL
WIRE.
8
.
REMOVE JUMPER FOR AI OPTION. ROUTE AI
WIRES FROM AHU.
MODELS : CX180 - CX220 (DUAL COMPRESSOR UNITS)
23A
23A
TO
LPS1
LPS2
TO
HPS1
HPS2
24A
24A
5. HPS OPTION
COMP2:
COMP1:
CONNECTION FOR COMP. WITH SSPS
CRANKCASE HTR CONNECTION
(SEE NOTE 6)
REMOVE JP7
SSPS2
REMOVE JP4
SSPS1
1
M1/11
L1/MP
1
M1/11
L1/MP
2
L2/R
M2/14
2
M2/14
L2/R
C2-TRIP
C2-OFF
FR1-1
43
C2-ON
60
CC
2A
-2
A
61
FR2-1
UNIT-TRIP
44A
62
CC
2A
-2
B
44
63
A) UNIT ON & OFF INDICATION
UNIT TRIP INDICATION OPTION
B) COMP ON, OFF & TRIP [&]
3. VOLT FREE CONTACT OPTIONS
2. SMOKE DETECTOR OPTION
55
17
41A
FR2-2
FR2-2
C1-TRIP
C1-OFF
ATB(8)
41B
59
FR2
COMP2
FR1-2
FR1-2
56
C1-ON
CC
1A
-2
A
57
CC
1A
-2
B
54
FR1
17
58
VFC-FROM CUSTOMER'S
AR1-1
UNIT OFF
AR1
ATB(7)
UNIT ON
45
AR1-1
15
COMP1
46
17
REMOVE JP2
SMOKE DETECTOR
1A
47
1B
SET POINTS
1. UVM OPTION
HPS1&2
LPS1&2
NAME
360 ± 15
50 ± 5
(PSIG)
CLOSE
OPEN
(PSIG)
450 ± 10
25 ± 5
FOR 3PH FAN MOTOR ONLY
4. LOW AMBIENTOPTION APPLICABLE
CC1A-1
CC2A-1
CB1
CC1
LUG
L3
COMP
1
FM1
FMC1
T3
A
T2
A
T1
A
L3
A
L2
A
L1
A
35
A
36
A
37
A
COMP
2
L3
B
T3
B
CC2
T1
B
T2
B
CB2
L1
B
L2
B
FMC2
35
B
FM2
ATB2
37
B
36
B
1
CONNECTION APPLICABLE FOR 1PH FAN MOTOR ONLY
CIRCUIT BREAKER OPTION
L1/L1A
CAP1
35A
36A
HVTB
L2
L1
FMC1
36A
37A
FM1
L2/L2A
FMC2
35B
CAP2
36B
FM2
36B
37B
L2/L2B L3/L3B
FMC1
35A
L1
ATB2
FM2
FCS1
FCS2
12B
12A
FM1
FMC1
13
FMC2
FAN1 CONTACTOR
FAN2 CONTACTOR
2
36A
37A
L2
L3
FMC2
35B
36B
TO HVTB
37B
UVM
Ø
Ø
Ø
1
TO ATB 1A
TO ATB
(REMOVE JP1)
Ø
UVM-1
1
Ø
8
L1
L2
L3
12
