Daikin ETVZ16S18EA6V, Installer'S Reference Manual

Page: 94 / 272

9 | Electrical installation
Installer reference guide
94
EPRA14~W1 + ET9W
Daikin Altherma 3 H HT F
4P644739-1 – 2021.02
9.3 Connections to the indoor unit
Item Description
Power supply (main) See "9.3.1 To connect the main power
supply" [
4
97].
Power supply (backup
heater) See "9.3.2 To connect the backup heater power
supply" [
4
98].
Shut-off valve See "9.3.3 To connect the shut-off valve" [ 4 101].
Electricity meters See "9.3.4 To connect the electricity meters" [
4
102].
Domestic hot water pump See "9.3.5 To connect the domestic hot water
pump" [ 4 103].
Alarm output See "9.3.6 To connect the alarm output" [
4
104].
Space heating operation
control See To connect the space heating ON/OFF output.
Changeover to external
heat source control See "9.3.8 To connect the changeover to external
heat source" [ 4 106].
Power consumption digital
inputs See "9.3.9 To connect the power consumption
digital inputs" [
4
107].
Safety thermostat See "9.3.10 To connect the safety thermostat
(normally closed contact)" [
4
108].
Smart Grid See "9.3.11 To connect a Smart Grid" [
4
110].
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