Daikin Altherma 3 HT, Installer'S Reference Manual

Page: 109 / 288

9 | Electrical installation
Installer reference guide
109
EPRA14~18D + ETVH/23E
Daikin Altherma 3 H HT F
4P644737-1A – 2022.03
9.3 Connections to the indoor unit
Item Description
Power supply (main) See "9.3.1 To connect the main power
supply" [
4
112].
Power supply (backup
heater) See "9.3.2 To connect the backup heater power
supply" [
4
114].
Shut-off valve See "9.3.3 To connect the shut-off valve" [ 4 117].
Electricity meters See "9.3.4 To connect the electricity meters" [
4
118].
Domestic hot water pump See "9.3.5 To connect the domestic hot water
pump" [ 4 119].
Alarm output See "9.3.6 To connect the alarm output" [
4
120].
Space cooling/heating
operation control See "9.3.7 To connect the space cooling/heating ON/
OFF output" [
4
121].
Changeover to external
heat source control See "9.3.8 To connect the changeover to external
heat source" [ 4 122].
Power consumption digital
inputs See "9.3.9 To connect the power consumption
digital inputs" [
4
123].
Safety thermostat See "9.3.10 To connect the safety thermostat
(normally closed contact)" [
4
124].
Smart Grid See "9.3.11 To connect a Smart Grid" [
4
125].
WLAN cartridge See "9.3.12 To connect the WLAN cartridge
(delivered as accessory)" [
4
129].
Room thermostat (wired or
wireless) See below table.
Wires: 0.75 mm²
Maximum running current: 100 mA
For the main zone:
▪ [2.9] Control
▪ [2.A] Ext thermostat type
For the additional zone:
▪ [3.A] Ext thermostat type
▪ [3.9] (read-only) Control