6.
APPENDIX
Appendix 7: Circuit diagram of the unit
Y/G
COMP
WHT
CC
CR
CS
BLK
RED
L22
C1
L22
C2
KS
1
2
2
KS
L22
L22
5
KM1
L1 L2
Y/G
BLK WHT
L1 L2
TO POWER SUPPLY
208-230V~/60Hz
AT Ambient temperature
COMP Compressor
CH Compressor heater
CT Coil temperature
FM Fan motor
FS Flow switch
HP11 High pressure protection( 4.0Mpa)
HP12 High pressure protection( 4.4Mpa)
IT Inlet water temperature
KM1 Contactor of compressor
K1 Realy of compressor
KS Relay coil of compressor start
LP Low pressure protection
OT Outlet water temperature
TC Transformer
4V
4 way valve
PASRW045
C3
BLK
BLU
Y/G
HP12
FM
RED
L2
OUT3
4V
OUT4
1
2
Dry Contact
OUT5
AC-N
2
2
TC
12V
1
3
5
7
L2
01
2
4
6
8
KM1
K1
OUT1
OUT2
PC1001
Controller
FS
LP
23
K1
CH
EEV
5
GND
AI06
GND
AI05
GND
AI04
GND
AI03
GND
AI02
GND
AI01
+5V
GND
3
4
HP11
REMOTE IN
5K
AT
t
AT
5K
CT
t
CT
5K
OT
t
OT
5K
IT
t
IT
5K
SUT
t
SUT