Daikin Altherma H Hybrid EJHA04AAV3 Installer's Reference Manual page 76

9 | Preparation
Installer reference guide
76
NOTICE
More technical specifications of the different connections are indicated on the inside
of the outdoor unit.
Connections to EHY2KOMB28+32AA gas boiler:
Item Description
Power supply
1 Power supply gas boiler
Interconnection cable
2 Interconnection cable
between outdoor unit and
gas boiler
Optional equipment
3 3‑way valve
4 Domestic hot water tank
thermistor
5 Room thermostat/heat
pump convector
(a) See the name plate on the gas boiler.
(b) Cable section 0.75 mm² till 1.25 mm²; maximum length: 200 m. This cable is field
supplied.
(c) Cable section 0.75 mm² till 1.25 mm².
(d) The thermistor and connection wire (11 m) are available as option (EKTH3 or
EKTH4).
NOTICE
More technical specifications of the different connections are indicated on the inside
of the gas boiler.
In case of system with third-party gas boiler
The following illustration shows the required field wiring.
INFORMATION
The following figure is an example and may NOT completely match your system
layout.
a
2
a Outdoor unit
b Third-party gas boiler
c Power supply for gas boiler
Connections to outdoor unit:
Item Description
Power supply
2+GND
2
3
2
2
c
4
b
5
6
7
Wires Maximum
running current
(a)
(b)
(c)
100 mA
(d)
(c)
100 mA
Wires Maximum
running current
EJHA04AAV3 + EHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P531180-1D – 2025.03