Daikin Altherma EHVH04S18CB3V Installer's Reference Manual page 97

Digital I/O PCB
SS1
CN1:1 3
ON
F2U F1U
OFF
KCR KFR
KHR KHUR
PHC1
X1 X2 X3 X4 YC Y1 Y2
Alarm output
Max. load
0.3 A - 250 V AC
X2M
Min. load
20 mA - 5 V DC
X2M.13
13a
X2M.14
21
X2M.9
28
29
1 2
Solar pump
connection
For
L N
*KSOLHWAV1,
refer to operation
manual
Ext. heat source
Max. load 0.3 A - 250 V AC
Min. load 20 mA - 5 V DC
only for solar pump station
Options: boiler output, solar pump connection,
alarm output
X2M
X2M.14
21
X2M.9
28
4
29
to bottom
plate
heater
Space C/H
1 2 X1Y On/OFF output
Max. load
OUTDOOR
0.3 A - 250 V AC
UNIT
Min. load
20 mA - 5 V DC
only for EKBPHT* only if no EKBPHT*
Options: bottom plate heater OR On/OFF output
Only for digital I/O PCB option
Only for preferential kWh rate power supply (outdoor)
Use normal kWh rate power supply for indoor unit
5 6
A3P
A3P
C H C H
COM
COM
R1T R1T
-t° -t°
only for wired only for wired
ON/OFF thermostat ON/OFF thermostat
5 6
A4P A4P
H C L N H C L N
COM COM
PC PC
A3P A3P
R1H R1H
%H20 %H20
R1T R1T
X1M X1M
-t° -t°
only for wireless only for wireless
ON/OFF ON/OFF
thermostat thermostat
only for ext. only for ext.
sensor sensor
R2T
(floor or R2T (floor or
-t°
ambient) ambient)
-t°
5 6
X11M 3 4 5 6 X11M 3 4 5 6
A3P
A3P
Heatpump convector Heatpump convector
Main LWT zone Add LWT zone
A1P Main PCB
ERLQ004~008CA + EHVH/X04+08S18+26CB
Daikin Altherma – Low temperature split
4P384973-1A – 2016.02
A4P
CN2:1
2
3
4
5
6
Y3 Y4
Switch
X5M
3 4 7 8 9 10
box
A3P
X18A:1 2
Preferential Electric pulse
kWh meter inputs:
rate power 5 V DC pulse
supply detection
contact: (voltage supplied
16 V DC by PCB)
detection
(voltage
supplied by
PCB)
Switch
box
A2P
P1 P2 P1 P2
R1T
-t°
4
User
Remote
interface
user
interface
Only for normal power supply (standard)
Indoor unit supplied from outdoor
1N~, 50 Hz
L N
230 V AC OUTDOOR
UNIT
Normal
Q2DI X2M
30 31
kWh rate
X1M
1 2 3
power
supply
X6YB
X6YA 1 2 3 X1M
X2M
30 31
X6YA
X6YB
X6Y X6Y
1
A1P
X1A:3 1
X17A:1
FU1
3
X2M
5
1 7
2
X24A:1
1a
3
2a
5
3
7
4
K4R
32
X14A:1
33
3
X20A:1 3 5
1 3 5
X2A
X2A.5
X2M.7
X2M 5 6 7 X2M 8 9
8a 10
Switch box
M3S
L
N
Y
M2S
3 wire type (SPST)
NO valve only for domestic
3
hot water option
8
only for wall mounted model
M2S
NC valve
3
Shut-off valve
X33A:1
2
3
4
5
6
X40A:1
2
3
4
5
6
7
8
X85A:1 2 3 4 5 6
standing model
X80A:1 2 3 4 5 6 7 8 9 10 11 12
DS1
1 2 X5M
ON X801M
OFF
1 2 3 4 5
1 2 3 4
A2P
Demand PCB
R1T
-t°
Only for demand PCB option
OUTDOOR
UNIT
1 2 3 X1M
TR1
1 2 3 X1M
1
X19A:1 3 5 X26A:1 2 X31A:1 3
X28A:1 2
X25A:1 2
X2A.5
X2M.7
X2M.28 X2M.28
X2M 8 9
8a 10
9
only for *16*
NC
N
M3S
NO
3 wire type (SPDT)
8
only for floorstanding model
9
only for *04* and *08*
and *11*
A2P
14 Technical data
A1P
R1T
X5A:1
-t°
2
R2T
X6A:1
-t°
2
R3T
X7A:1
-t°
2
R4T
X8A:1
-t°
2
X9A:1
2
X4A:1
2
X22A:1 2 3
4
5 6 X5M
Switch box
A8P
ext. ambient
R6T
sensor option
1
(indoor or
-t° outdoor)
2
Power limitation
digital inputs:
12 V DC / 12 mA
detection
(voltage supplied by
PCB)
4D090419-1A page 5
11
31
Q1L
32 12
Q2L
A1
K5M
A2
X9M
only for domestic
X2M
29 21
hot water option
X2M.21
only for *9W
X21A:1 3
X3A:1 3
KPR
FU2 K6R K1R K2R
3 4 5 6 X16A:5 3 1 X15A:1 3 X11A:3 1 X12A:3 1 X13A:3 1
K2M
K1M A1 A1
X2M A2 A2
34 35
Switch box
MS
M1P
3~
DHW pump output
Max. load:
M
2 A (inrush) - 230 V AC
M2P 1~
1 A (continuous)
MS
DHW pump
M1P
3~
4D090419-1A page 6
User interface PCB
Installer reference guide
10
R5T
-t°
only for domestic
hot water option
10
R5T
-t°
only for floor
standing model
domestic hot
3/21/31
water tank
4/22/32
only for
enamel
tank
14 13
option
14 13
X2M.13a
K3R
A1
K3M
A2
only for domestic hot
water tank option
97