Daikin Altherma 3 H MT ECH2O, Installer'S Reference Manual

Page: 114 / 304

9 | Electrical installation
Installer reference guide
114
EPRA08~W1 + ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH₂O
4P663478-1 – 2021.07
9.3 Connections to the indoor unit
Item Description
Power supply (main) See "9.3.2 To connect the main power
supply" [
4
118].
Power supply (backup
heater) See "9.3.3 To connect the backup heater power
supply" [
4
120].
Backup heater See "9.3.4 To connect the backup heater to the main
unit" [
4
123].
Shut-off valve See "9.3.5 To connect the shut-off valve" [
4
124].
Electricity meters See "9.3.6 To connect the electricity meters" [ 4 125].
Domestic hot water pump See "9.3.7 To connect the domestic hot water
pump" [
4
126].
Alarm output See "9.3.8 To connect the alarm output" [
4
127].
Space cooling/heating
operation control See "9.3.9 To connect the space cooling/heating ON/
OFF output" [ 4 128].
Changeover to external
heat source control See "9.3.10 To connect the changeover to external
heat source" [
4
129].
Power consumption digital
inputs See "9.3.11 To connect the power consumption
digital inputs" [
4
130].
Safety thermostat See "9.3.12 To connect the safety thermostat
(normally closed contact)" [
4
132].
Smart Grid See "9.3.13 To connect a Smart Grid" [
4
133].
WLAN cartridge See "9.3.14 To connect the WLAN cartridge
(delivered as accessory)" [
4
138] .
Solar input See "9.3.15 To connect the solar input" [
4
139].
DHW output See "9.3.16 To connect the DHW output" [
4
139].
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] Thermostat type
For the additional zone:
▪ [3.A] Thermostat type
▪ [3.9] (read-only) Control