Technical Data; Wiring Diagram; Wiring Diagram - Components: Indoor Unit - Daikin Altherma EHVH04S18CA3V Manuel D'installation

7

Technical data

7.1

Wiring diagram

7.1.1 Wiring diagram – components: Indoor unit
See the internal wiring diagram supplied with the unit (on the inside of the
indoor unit switch box cover). The abbreviations used are listed below.
A1P Main PCB
A2P User interface PCB
A3P * Solar pump station PCB
A3P * On/OFF thermostat (PC=power circuit)
A3P * Heat pump convector
A4P * Digital I/O PCB
A4P * Receiver PCB (Wireless On/OFF
thermostat)
A7P Pump driver PCB (only for EHBH/X16 and
EHVH/X16)
A8P * Demand PCB
B1L Flow sensor
BSK * Solar pump station relay
DS1 (A8P) * DIP switch
E1H Backup heater element (1 kW)
E2H Backup heater element (2 kW)
E3H Backup heater element (3 kW)
E4H * Booster heater (3 kW)
F1B Overcurrent fuse backup heater
F2B * Overcurrent fuse booster heater
F1T Thermal fuse backup heater
F1U, F2U * Fuse 5 A 250 V for digital I/O PCB
FU1 Fuse T 6.3 A 250 V for PCB
PHC1 * Optocoupler input circuit
K1M, K2M Contactor backup heater
K3M * Contactor booster heater
K5M Safety contactor backup heater (only for
*9W)
K*R Relay on PCB
M1P Main supply pump
M2P # Domestic hot water pump
M2S # 2-way valve for cooling mode
M3S (*) 3-way valve for floor heating/domestic hot
water
Q1DI, Q2DI # Earth leakage circuit breaker
Q1L Thermal protector backup heater
Q2L * Thermal protector booster heater
R1T Outlet water heat exchanger thermistor
R1T (A2P) Ambient sensor user interface
R1T (A3P) * Ambient sensor On/OFF thermostat
R2T Outlet backup heater thermistor
R2T * External sensor (floor or ambient)
R3T Refrigerant liquid side thermistor
R4T Inlet water thermistor
R5T (*) Domestic hot water thermistor
R6T * External indoor or outdoor ambient
thermistor
R1H (A3P) * Humidity sensor
EHVH/X04+08 + EHVH/X16
Daikin Altherma - Low Temperature Split
4P313772-1B – 2012.05
S1S # Preferential kWh rate power supply contact
S2S # Electrical meter pulse input 1
S3S # Electrical meter pulse input 2
S6S~S9S # Digital power limitation inputs
SS1 (A4P) * Selector switch
T1R (A7P) Rectifier bridge (only for EHBH/X16 and
EHVH/X16)
TR1 Power supply transformer
X*M Terminal strip
X*Y Connector
* = Optional
(*) = Standard for EHVH/X, optional for EHBH/X
# = Field supply
BLK Black
BRN Brown
GRY Grey
RED Red
Notes to go through before starting the unit
English
X1M
X2M
X5M
X6M, X7M
X4M
15
**
/12.2
1
Backup heater configuration
(only for *9W)
User installed options
Bottom plate heater
Domestic hot water tank
Domestic hot water tank with
solar connection
Remote user interface
Ext. indoor thermistor
Ext outdoor thermistor
Digital I/O PCB
Demand PCB
Solar pump and control station
Main LWT
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
Ext. thermistor
Heat pump convector
Add LWT
7 Technical data
Translation
Main terminal
Field wiring terminal for AC
Field wiring terminal for DC
Backup heater terminal
Booster heater terminal
Earth wiring
Wire number 15
Field supply
Connection ** continues on page
12 column 2
Several wiring possibilities
Option
Not mounted in switch box
Wiring depending on model
PCB
Backup heater configuration
(only for *9W)
User installed options
Bottom plate heater
Domestic hot water tank
Domestic hot water tank with
solar connection
Remote user interface
Extended indoor thermistor
Extended outdoor thermistor
Digital I/O PCB
Demand PCB
Solar pump and control station
Main leaving water temperature
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
Extended thermistor
Heat pump convector
Additional leaving water
temperature
Installation manual
15