Calorex Pro-Pac PPT45EHC - Page 21

CONTROL
2.5A
MCB SETTINGS
COMPRESSOR FAN
4.5A32.8A
D571350
MCB CONTACTS / MCB ALARM CONTACTS / MCB AUX
CONTACTS SHOWN WITH CIRCUIT BREAKER MANUALLY
SWITCHED TO THE ON CONDITION
WATER FLOW SWITCH CONTACTS SHOWN WITH
WATER FLOW AT MAXIMUM RATE
ALL OTHER CONTACTS SHOWN IN DE-ENERGISED
STATE BUT WITH REFRIGERATION CIRCUIT FULLY
CHARGED.
WHERE CONTACTS ARE MARKED (N/O) OR (N/C) ON
CIRCUIT DIAGRAM ABOVE CONDITIONS APPLY
COMP 2
CIRCUIT BREAKER
TRIP / OFF = BREAK CONTACT
COMP 1
CIRCUIT BREAKER
TRIP / OFF = BREAK CONTACT
TRIP / OFF = BREAK CONTACT
FAN CIRCUIT BREAKER
(BREAKS TO
'H' ON
TEMP FALLING)
PHASE
ROTATION RELAY
L3
L2
L1
14 (N/O)
12 (N/C)
11 (COM)
6 (N/C)
4 (N/C)
2 (N/C)
CONTROL
CIRCUIT
BREAKER
TRIP / OFF =
BREAK CONTACT
5
3
1
FAN MCB AUX BLOCK :
ALARM TRIP = BREAK
CONTACT
COMPRESSOR 1 MCB
AUX BLK : ALARM TRIP
= BREAK CONTACT
COMPRESSOR 2 MCB
AUX BLOCK : ALARM
TRIP = BREAK
CONTACT
L3 L2 L1
5
3
1
6 (N/C)
4 (N/C)
2 (N/C)
5
3
1
6 (N/O)
4 (N/O)
2 (N/O)
FAN
FAULT LIGHT
WATER FLOW
SWITCH (N/O)
A
B
RELAY (R3)
FLOW OK LIGHT
(COM) 1
3 (N/C) [STANDBY]
2 (N/O) [RUN]
STANDBY SWITCH
5
3
1
6 (N/O)
4 (N/O)
2 (N/O)
COMP
2
(N/O) 11 14 (COM)
DELAY TIMER T3
21 22 (N/C)
A1 A2
CONTACTOR (COMP 2)
(W)
(V)
(U)
5
3
1
6 (N/C)
4 (N/C)
2 (N/C)
(N/O)
4 (N/O) 1 (N/C)
(COM) 7
RELAY (R2)
(COM) 15
18 (N/O)
16 (N/C)
DELAY TIMER T1 (12 HOUR)
A1 A2
CONTACTOR (FAN)
A2A1
A1 A2
DEFROST LIGHT
5
3
1
6 (N/O)
4 (N/O)
2 (N/O)
21 22 (N/C)
CONTACTOR (COMP 1)
(W)
(V)
(U)
5
3
1
6 (N/C)
4 (N/C)
2 (N/C)
A1
A2
18 (N/O)
(COM) 15
A2A1
DELAY TIMER T2 (6 MINS)
54 53 (N/O) 54 53 (N/O)
COMP 1 MCB AUX COMP 2 MCB AUX
16 (N/C)
13 14 (N/O)
LIQUID LINE
SHUT OFF VALVE
COMP 1 CONT AUX
13 14 (N/O)
COMP 2 CONT AUX
HEATER HEATER
(COM) C
(N/C) L
H (N/O)
DEFROST STAT
(10 SECS)
(COM) 6
4 (N/O)
MAKES 4 TO 6 ON TEMP FALLING
11
10
SENSOR
DIGITAL STAT (2 STAGE)
5 (N/C)
(COM) 7
8 (N/O)
9 (N/C) 2 (N)
C (COM)
H (N/O)
(N/C) L
TEMP OK
LIGHT
OUT 1 OUT 2
CHILL LIMIT
LIGHT
A
B
RELAY (R1)
(N/C) 1
7 (COM)
(N/O) 4 (N/C) 3
9 (COM)
(N/O) 6
CHILL LIGHT
REVERSING VALVE
HEAT LIGHT
CHILL LIMIT SWITCH
(BREAKS TO 'H' ON TEMP FALLING)
MAKES 8 TO 7 ON TEMP RISING
1 (L)
44
43 (N/C)
43
44 (N/C)
(N/C)
C (COM)
H (N/C)(N/O) L
C (COM)
H (N/O)
(N/C) L
COMPRESSOR 2
MOTOR PROTECTOR
HP SWITCH
(BREAKS TO 'L' ON PRESSURE RISING)
LP SWITCH
(BREAKS TO 'H' ON PRESSURE FALLING)
STARTER OR
EXTERNAL FLOW
SWITCH
SOFT START THERMAL
O/LOAD & FAULT LAMP
IF FITTED
INTERLOCK
TERMINALS
(N/C)
COMPRESSOR 1
MOTOR PROTECTOR
95
96 (N/C)
(NC)
TK
TK
FAN THERMAL
CUT OUT
MAINS
LIGHT
COMP
1
PP(T)70EHC THREE PHASE (200V 3~ 60Hz)
21
SD566250 ISSUE 35