9
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Electrical installation
Installer reference guide
107
EPRA14~W1 + ETVH/9W
Daikin Altherma 3 H HT F
4P644737-1 – 2021.02
9.3 Connections to the indoor unit
Item
Description
Power supply (main)
See
"9.3.1 To connect the main power
Power supply (backup
heater)
See
"9.3.2 To connect the backup heater power
Shut-off valve
See
"9.3.3 To connect the shut-off valve"
114].
Electricity meters
See
"9.3.4 To connect the electricity meters"
115].
Domestic hot water pump
See
"9.3.5 To connect the domestic hot water
Alarm output
See
"9.3.6 To connect the alarm output"
Space cooling/heating
operation control
See
"9.3.7 To connect the space cooling/heating ON/
Changeover to external
heat source control
See
"9.3.8 To connect the changeover to external
Power consumption digital
inputs
See
"9.3.9 To connect the power consumption
120].
Safety thermostat
See
"9.3.10 To connect the safety thermostat
Smart Grid
See
"9.3.11 To connect a Smart Grid"
122].
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
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