Daikin Altherma EHVH04S18CB3V Installer's Reference Manual page 98

14 Technical data
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)
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
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
TR1 Power supply transformer
X1H Connector
X*M Terminal strip
X*Y Connector
* = Optional
(*) = Standard for EHVH/X, optional for EHBH/X
Installer reference guide
98
# = 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
ERLQ004~008CA + EHVH/X04+08S18+26CB
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
Daikin Altherma – Low temperature split
4P384973-1A – 2016.02