Overview Of Electrical Connections For External And Internal Actuators - Daikin Altherma H Hybrid EJHA04AAV3 Installer's Reference Manual

9.4.3 Overview of electrical connections for external and internal actuators

EJHA04AAV3 + EHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P531180-1D – 2025.03
2 Power supply for gas boiler
3 In case of EHY2KOMB28+32AA gas boiler: Interconnection cable
between outdoor unit and gas boiler
In case of third-party gas boiler: Bivalent signal for third-party gas
boiler
NOTICE
Field wiring – Temperature. Make sure that all field wiring withstands 90°C.
In case of system with EHY2KOMB28+32AA 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 EHY2KOMB28+32AA gas boiler
Connections to outdoor unit:
Item Description
Power supply
1 Power supply for outdoor
unit
User interface
2 User interface
Optional equipment
3 Bottom plate heater
4 Outdoor ambient
temperature sensor
5 LAN adapter
Field supplied components
6 Domestic hot water pump
(a) See the name plate on the outdoor unit.
(b) Cable section 0.75 mm² till 1.25 mm²; maximum length: 200 m.
(c) Part of optional equipment
(d) Minimum cable section 0.75 mm².
(e) Cable section 0.75 mm² till 1.25 mm²; maximum length: 200 m. These wires MUST
be sheathed. Recommended strip length: 6 mm.
3 3
b
4
5
4
6
2
5
2+GND
2
2+GND
2
2
2+GND
9 Preparation
|
M
Wires Maximum
running current
(a)
(b)
(c)
(d)
(e)
(d)
Installer reference guide
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