
125A8V1BF
VRV IV System indoor unit
4P405267-1C – 2021.04
Installation and operation manual
41
14.2. Wiring diagram
The abbreviations used are listed below:
A1P........................ Main PCB (master)
A2P........................ User interface PCB
A3P........................ Control PCB
A4P.................* ..... Demand PCB
A5P.................* ..... Remote user interface PCB
A6P.................* ..... Thermostat PCB
A7P.................* ..... Receiver PCB
C1-C3 .................... Filter capacitor
F1U (A*P) .............. Fuse (T, 3.15 A, 250 V)
HAP (A*P).............. PCB LED
K1E........................ Electronic expansion valve
K*R (A3P).............. PCB relay
M1P ....................... Pump
PC (A7P) ........* ..... Power circuit
PS (A1P)................ Switching power supply
Q*D1..............# ..... Earth leakage circuit breaker
R1H (A6P) ......* ..... Humidity sensor
R1T........................ Leaving water thermistor
R1T (A6P).......* ..... Ambient sensor
R2T........................ Return water thermistor
R2T.................* ..... External sensor (floor or ambient)
R3T........................ Refrigerant liquid thermistor
R4T........................ Refrigerant gas thermistor
S1L ........................ Flow switch
S1S................# ..... Thermostat input 1
S2S................# ..... Thermostat input 2
S3S................# ..... Operation ON input
S4S................# ..... Operation OFF input
SS1 (A1P).............. Selector switch (emergency)
(EMG. = emergency, NORM. = normal)
SS1 (A2P).............. Selector switch (main (M)/sub (S))
SS1 (A5P)...... * ..... Selector switch (main (M)/sub (S))
T1R........................ Diode bridge
V1C-V2C ............... Ferrite core noise filter
X*A (A*P) ............... PCB connector
X1M ....................... Terminal strip for high voltage field wiring
X2M ....................... Terminal strip for low voltage field wiring
X*M (A*P) ...... * ..... PCB terminal strip
Z1F (A1P ............... Noise filter
*
Field installed option
#
Field supplied
Colours
BLK........................ Black
BLU........................ Blue
BRN ....................... Brown
ORG ...................... Orange
RED ....................... Red
WHT....................... White
YLW ....................... Yellow
Notes
PC
L
N
X2M
C
COM
X1M H
%H20 R1H
X1M
X1M
only for EKRTR*
only for EKRTETS
only for EKRTW*
1
C
COM
H
1
A6P
A6P
A7P
X801M
4 5
1 2 3
A4P
1
A1P
WHT
YLW
ORG
BLU
RED
BRN
BLU
BRN
RED
BLK
WHT
T1R
Z1F
PS
HAP
SS1
NORM.
EMG.
HAP
3
4
X1M
5
6
X1M
X1M
11
12
Cooling / heating output:
max 0.3A, 230V AC
Operation on/off output:
max 0.3A, 230V AC
Error output:
max 0.3A, 230V AC
L
X1M
N
5
X2M
6
A3P
only for EKBUH*
X2M 4 5
1 2 3
N
L
1~50Hz 220-240 VAC
power supply
User interface
P1
P2
F1
F2
X2M
P1
X2M
P2
Remote user
interface
P1
P2
only for EKRUAHT*
V2C
N=2
V1C
N=1
SS1
S
M
SS1
S
M
A2P
A5P
F1F2 communication:
see outdoor unit for
more details
only for EKRP1AHT*
X2M
7
X1M
8
9
X1M
10
N
L
1~50Hz 220-240 VAC
power supply
R1T
-t°
R1T
-t°
R2T
-t°
X80A:1
2
3
4
5
6
7
8
9 10 11 12
S1S S2S
S3S S4S
X18A:1
2
X12A:1
2
X17A:1
2
X7A:1 2
3 4
5
K1E
M
X20A:1 2
3 4
6
M1P
MS
3~
6
7
3
NE
X27A:(L) 1
(N) 3
5
5
8
F1U
R3T
-t°
R2T
-t°
R1T
-t°
C3
X16A:1
2
3
R4T
-t°
4
C1
C2
X8A:1 2
K6R
S1L
X1A:1
2
3
4
F1U
X23A:1
2
3
4
X7A:1
2
K5R
K7R
2
K2R
X4A:1
Q1DI
X30A:1
2
3
4
5
6
7
8
X70A:1
2
2
X35A:1
X15A:1
2
2
X10A:1
2
X16A:1
X14A:1
2
X15A:1
2
2
K3R
X5A:1
2
K1R
X3A:1
3
4
Q2DI
X85A:1 2
3
4
5
6
only for ***
only for ***
power supply
power supply
Cooling/heating output:
Cooling/heating output:
Operation on/off output:
Operation on/off output:
Error output:
Error output:
F1F2 communication:
see outdoor unit for more details
F1F2 communication:
see outdoor unit for more details
User interface
User interface
Remote user interface
Remote user interface
Содержание HXY080A8V1BF
Страница 1: ...INSTALLATION AND OPERATION MANUAL HXY080A8V1BF HXY125A8V1BF System indoor unit...
Страница 46: ......
Страница 47: ......
Страница 48: ...4P405267 1C 2021 04 Copyright 2021 Daikin 3...