Connections To The Indoor Unit - Daikin EPRA18DAV3 Installer's Reference Manual

8 | Electrical installation

8.3 Connections to the indoor unit

Installer reference guide
98
Item
Power supply (main)
Power supply (backup
heater)
Shut-off valve
Electricity meters
Domestic hot water pump
Alarm output
Space cooling/heating
operation control
Changeover to external
heat source control
Power consumption digital
inputs
Safety thermostat
Room thermostat (wired or
wireless)
Description
See "To connect the main power
See "To connect the backup heater power
4
supply" [ 103].
See "To connect the shut-off
See "To connect the electricity
See "To connect the domestic hot water
4
pump" [ 107].
See "To connect the alarm
See "To connect the space cooling/heating ON/OFF
4
output" [ 109].
See "To connect the changeover to external heat
4
source" [ 110].
See "To connect the power consumption digital
4
inputs" [ 111].
See "To connect the safety thermostat (normally
4
closed contact)" [ 112].
See:
▪ Installation manual of the wireless room
thermostat
▪ Installation manual of the wired room
thermostat (digital or analogue) + multi-
zoning base unit
- Connection of the wired room thermostat
(digital or analogue) to the multi-zoning
base unit
- Connection of the multi-zoning base unit
to the indoor unit
- For cooling/heating operation, you also
need option EKRELAY1
▪ Addendum book for optional equipment
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
EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
4
supply" [ 101].
4
valve" [ 105].
4
meters" [ 106].
4
output" [ 108].
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12