Daikin SEHVX20BAW - Wiring Diagram: Indoor Unit

12 Technical data
Installer and user reference guide
55
SERHQ020~032BAW1 + SEHVX20~64BAW
Split packaged air-cooled water chiller
4P508020-1A – 2018.01
12.7 Wiring diagram: Indoor unit
Refer to the wiring diagram sticker on the indoor unit. The
abbreviations used are listed below:
L1,L2,L3 Live
N Neutral
Field wiring
Terminal strip
Connector
Terminal
Protective earth (screw)
BLK Black
BLU Blue
BRN Brown
GRN Green
GRY Grey
ORG Orange
PNK Pink
RED Red
WHT White
YLW Yellow
A1P Main PCB circuit 1
A2P User interface PCB
A3P Control PCB circuit 1
A4P Demand PCB (optional)
A5P Main PCB circuit 2
A6P Demand PCB (optional)
A7P Remote user interface PCB (optional)
A8P Control PCB circuit 2
C1~C3 Filter capacitor
F1U (A*P) Fuse (250V, 3.15A, T)
HAP (A*P) PCB LED
K11E Electronic expansion valve (circuit 1)
K21E Electronic expansion valve (circuit 2)
K1P Pump contactor
K1S Pump overcurrent relay
K*R (A3P) PCB relay
M1P Pump
Q1T Thermostat for expansion vessel heater
PS (A*P) Switching power supply
Q1DI Earth leakage circuit breaker (field supply)
R1T Thermistor (air, fin)
R11T Leaving water thermistor (circuit 1)
R12T Returning water thermistor (circuit 1)
R13T Refrigerant liquid thermistor (circuit 1)
R14T Refrigerant gas thermistor (circuit 1)
R21T Leaving water thermistor (circuit 2)
R22T Returning water thermistor (circuit 2)
R23T Refrigerant liquid thermistor (circuit 2)
R24T Refrigerant gas thermistor (circuit 2)
S1L Flow switch (circuit 1)
S2L Flow switch (circuit 2)
S1S Thermostat input 1 (field supply)
S2S Thermostat input 2 (field supply)
S3S Operation ON input (field supply)
S4S Operation OFF input (field supply)
SS1 (A1P, A5P) Selector switch (emergency)
SS1 (A2P) Selector switch (master/slave)
SS1 (A7P) Selector switch (master/slave) (optional)
V1C, V2C Ferrite core noise filter
X1M~X4M Terminal strip
X801M (A*P) Printed circuit board terminal strip
Z1F, Z2F (A*P) Noise filter