Daikin EHOB18AAV1H [51/316] Electrical diagram

ROTEX Heating Systems GmbH 52

10.2 Electrical diagram

Earth connection exchanger

Fuse (3.15 A T)

CH pump

Ignition hood

Gas block + ignition module

Fan

Boiler controller

Ignition/ionization pin

Leaving water sensor

Earth connections

Mains electricity supply

Return sensor

Connector X4

24V=

5 -

PWM control CH-pump. (5= PWM signal (red), E=earth)

6-7

On/off room thermostat (0.1A-24Vdc) and/or frost thermostat

8-9

Outdoor sensor (12 kOhm / 25°C)

9-10

Tank sensor (remove through-connection)

11-12

OpenTherm room thermostat (6-7 should be open)

Connector X2

230V~

2-4

Mains supply 230 V (2 = L (brown), 4 = N (blue))

3-6

Electricity supply for fan (230 V, for EHOB42AAV1 only))

7-8

CH pump (8 = L (brown), 7 = N (blue))

3-5-6

Three-way valve for external tank (3 = L (brown), 5 = Switch (black), 6 = N (blue))

(e.g. EK3WV1AA)

Connector X5

Computer interface