Daikin INTERGAS Altherma NHY2KOMB28AA Installer's Reference Manual page 45

a
a Strip wire end to this point
b Excessive strip length may cause electrical shock or
leakage.
3 Insert the wiring at the back of the unit:
a
b
a~d See below
4 If you insert cables through the knockout holes c and d:
▪ Punch the knockout holes using a hammer and screw driver.
▪ Insert the cable glands (delivered as accessory).
5 Inside the unit, route the wiring to the switch box as follows:
c
d
3×
a~d See below
6 Inside the switch box, connect the wires to the appropriate
terminals.
7 After connecting all wiring, close the front plate and the top
plate.
Connections in case of third-party gas boiler
Routing Possible cables (depends on the installed
options)
a Main power supply
Main power supply
(high voltage)
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05
b
c
d
a
b
Routing Possible cables (depends on the installed
options)
b User interface (mandatory option)
User interface (low
voltage)
c ▪ Bivalent signal for third-party gas boiler
(field supply)
High voltage
▪ External pump cable – Power supply
(mandatory option)
d ▪ External
(option)
Low voltage
▪ LAN adapter (option)
▪ External pump cable – PWM signal
(mandatory option)
INFORMATION
Bottom plate heater (option). For the routing, see the
installation manual of the bottom plate heater.
To connect the main power supply
1 Connect the main power supply to the appropriate terminals as
shown in the illustration below.
3×
X2M
1×
a Recommended field fuse: 20 A
Q1DI Earth leakage circuit breaker
2 Fix the cable with cable ties to the cable tie mountings.
9 Installation
outdoor temperature sensor
a
N L
3 2 1 Q1DI
PE L N
1N~ 50 Hz
220-240 V
Installer reference guide
45