Table of Contents
Typical workflow in case of dedicated gas boiler
Connections to outdoor unit:
1
Making sure the power supply system complies with the
electrical specifications of the units.
2
Connecting the electrical wiring to the outdoor unit.
3
Connecting the main power supply.
4
Connecting the user interface.
5
Connecting the dedicated gas boiler to the outdoor unit.
6
Connecting the domestic hot water pump (if applicable).
7
Connecting the bottom plate heater (if applicable)(see the
installation manual of the bottom plate heater).
8
Connecting the remote outdoor sensor (if applicable)(see the
installation manual of the remote outdoor sensor and
addendum book for optional equipment).
9
Connecting the LAN adapter (if applicable)(see the installation
manual of the LAN adapter and addendum book for optional
equipment).
Connections to NHY2KOMB28+32AA gas boiler:
10 Connecting the main power supply to the gas boiler.
11 Connecting the wired or wireless room thermostat (if applicable)
(see the installation manual of the room thermostat and
addendum book for optional equipment).
12 Connecting the heat pump convector (if applicable)(see the
installation manual of the heat pump convector and addendum
book for optional equipment).
13 Connecting the domestic hot water tank (if applicable)(see the
installation manual of the DHW tank and addendum book for
optional equipment).
Typical workflow in case of third-party gas boiler
Connections to outdoor unit:
1
Making sure the power supply system complies with the
electrical specifications of the units.
2
Connecting the electrical wiring to the outdoor unit.
3
Connecting the main power supply.
4
Connecting the user interface.
5
Connecting the bivalent signal for third-party gas boiler.
6
Connecting the external pump.
7
Connecting the bottom plate heater (if applicable)(see the
installation manual of the bottom plate heater).
9.7.2
Precautions when connecting the
electrical wiring
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
Prevent hazards due to inadvertent resetting of the thermal
cut-out: power to this appliance MUST NOT be supplied
through an external switching device, such as a timer, or
connected to a circuit that is regularly turned ON and OFF
by the utility.
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05
NOTICE
Safety thermostat (normally closed contact). The
outdoor unit does not contain a safety thermostat. Make
sure to install a field-supplied safety thermostat in the heat
emitter system according to the applicable legislation.
However, you cannot connect the feedback signal from the
safety thermostat to the outdoor unit or gas boiler because
there are no terminals for the feedback signal. Because of
this, you also do not have to do any configuration on the
outdoor unit or gas boiler.
In any case, to prevent unnecessary tripping of the safety
thermostat, we recommend the following:
▪ The safety thermostat is automatically resettable.
▪ The safety thermostat has a maximum temperature
variation rate of 2°C/min.
▪ There is a minimum distance of 2 m between the safety
thermostat and the motorized 3‑way valve delivered
with the domestic hot water tank.
▪ The safety thermostat setpoint is at least 15°C greater
than the maximum leaving water temperature setpoint.
9.7.3
Guidelines when connecting the electrical
wiring
Keep the following in mind:
▪ If stranded conductor wires are used, install a round crimp-style
terminal on the end of the wire. Place the round crimp-style
terminal on the wire up to the covered part and fasten the terminal
with the appropriate tool.
b
a
a
Stranded conductor wire
b
Round crimp-style terminal
▪ Use the following methods for installing wires:
Wire type
Single-core wire
A
a Curled single-core wire
b Screw
c Flat washer
c b
Stranded conductor
wire with round
crimp-style terminal
a Terminal
b Screw
c Flat washer
O Allowed
X NOT allowed
Item
Outdoor unit
X2M
X5M
9 Installation
Installation method
c b
AA´
A´
c
a
a
a
b
c
B
B
a
Tightening torque (N•m)
1.3~1.6
0.8~0.9
Installer reference guide
41
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