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9 Installation
(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.
NOTICE
More technical specifications of the different connections
are indicated on the inside of the outdoor unit.
Connections to NHY2KOMB28+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 illustration is an example and might NOT
match your system layout.
4
a
2
5
6
7
a
Outdoor unit
b
Third-party gas boiler
c
Power supply for gas boiler
Connections to outdoor unit:
Item
Description
Power supply
1
Power supply for
outdoor unit
User interface
2
User interface
External pump + bivalent signal
3
External pump
Installer reference guide
30
Wires
Maximum
running
current
(a)
2+GND
(b)
2
(c)
3
100 mA
(d)
2
(c)
2
100 mA
c
b
Wires
Maximum
running
current
(a)
2+GND
(b)
2
(c)
2 and 2+GND
Item
Description
4
Bivalent signal for third-
(g)
party gas boiler
Optional equipment
5
Bottom plate heater
6
Outdoor ambient
temperature sensor
7
LAN adapter
(a)
See the name plate on the outdoor unit.
(b)
Cable section 0.75 mm² till 1.25 mm²; maximum length:
200 m.
(c)
The external pump is part of mandatory option
EKADDONJH; the 2 external pump cables (PWM signal
and power supply) are part of mandatory option
EKADDONJH2.
(d)
Minimum cable section 0.75 mm².
(e)
Part of optional equipment
(f)
Cable section 0.75 mm² till 1.25 mm²; maximum length:
200 m. These wires MUST be sheathed. Recommended
strip length: 6 mm.
(g)
Field supplied
NOTICE
More technical specifications of the different connections
are indicated on the inside of the outdoor unit.
9
Installation
9.1
Overview: Installation
This chapter describes what you have to do and know on-site to
install the system.
Typical workflow
Installation typically consists of the following stages:
1
Mounting the outdoor unit
2
Mounting the gas boiler
3
Connecting the condensate pipe
4
Connecting the water piping
5
Connecting the electrical wiring
6
Connecting the gas piping
7
Connecting the gas boiler to the flue gas system
8
Finishing the installation of the outdoor unit
9
Finishing the installation of the gas boiler
9.2
Opening the units
9.2.1
About opening the units
At certain times, you have to open the unit. Example:
▪ When connecting the electrical wiring
▪ When maintaining or servicing the unit
DANGER: RISK OF ELECTROCUTION
Do NOT leave the unit unattended when the service cover
is removed.
9.2.2
To open the outdoor unit
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
Wires
Maximum
running
current
(d)
2
(e)
2+GND
(d)
2
(f)
2
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05
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