Daikin Altherma EHFH-D3V - Guidelines When Connecting the Electrical Wiring; Connections to the Indoor Unit

6 Electrical installation
Installation manual
10
EHFH03S18D
Daikin Altherma 3 R F
4P596803-1D – 2022.08
6.2 Guidelines when connecting the
electrical wiring
Tightening torques
Indoor unit:
Item Tightening torque (N•m)
M4 (X1M, X2M, X5M) 1.2~1.5
M4 (earth) 1.2~1.5
6.3 Connections to the indoor unit
Item Description
Power supply (main) See "6.3.1To connect the main power
supply"[411].
Power supply (backup
heater)
See "6.3.2To connect the backup heater
power supply"[412].
User interface See "6.3.3To connect the user
interface"[413].
Shut-off valve See "6.3.4To connect the shut-off
valve"[413].
Electricity meters See "6.3.5To connect the electricity
meters"[414].
Domestic hot water
pump
See "6.3.6To connect the domestic hot
water pump"[414].
Alarm output See "6.3.7To connect the alarm
output"[415].
Space cooling/heating
operation control
See "6.3.8To connect the space cooling/
heating ON/OFF output"[415].
Changeover to
external heat source
control
See "6.3.9To connect the changeover to
external heat source"[416].
Power consumption
digital inputs
See "6.3.10To connect the power
consumption digital inputs"[416].
Safety thermostat See "6.3.11To connect the safety
thermostat (normally closed
contact)"[417].
Room thermostat
(wired or wireless)
See below table.
Wires for wired room thermostat: (3
for cooling/heating operation; 2 for
heating only operation)×0.75mm²
Wires for wireless room thermostat: (5
for cooling/heating operation; 4 for
heating only operation)×0.75mm²
Maximum running current: 100mA
For the main zone:
▪ [A.2.1.7] Unit control method
▪ [A.2.2.4] Contact type main
For the additional zone:
▪ [A.2.2.5] Contact type add.
Item Description
Heat pump convector There are different controllers and
setups possible for the heat pump
convectors.
For more information, see:
▪ Installation manual of the heat
pump convectors
▪ Installation manual of the heat
pump convector options
▪ Addendum book for optional
equipment
Wires: 4×0.75mm²
Maximum running current: 100mA
For the main zone:
▪ [A.2.1.7] Unit control method
▪ [A.2.2.4] Contact type main
For the additional zone:
▪ [A.2.2.5] Contact type add.
Remote outdoor
sensor
See:
▪ Installation manual of the remote
outdoor sensor
▪ Addendum book for optional
equipment
Wires: 2×0.75mm²
[A.2.2.B]=1 (External
sensor=Outdoor sensor)
[A.6.5] Ext amb. sensor offset
[A.6.4] Averaging time
Remote indoor sensor See:
▪ Installation manual of the remote
indoor sensor
▪ Addendum book for optional
equipment
Wires: 2×0.75mm²
[A.2.2.F.5]=2 (External
sensor=Room sensor)
[A.3.2.3] Ext. room sensor offset
LAN adapter See:
▪ Installation manual of the LAN
adapter
▪ Addendum book for optional
equipment
Wires: 2×(0.75~1.25mm²). Must be
sheathed.
Maximum length: 200m
See "LAN adapter – System
requirements"[411]
for room thermostat (wired or wireless):
In case of… See…
Wireless room thermostat ▪ Installation manual of the wireless
room thermostat
▪ Addendum book for optional
equipment