62
Terminals
Sensor
Type
16X0
Pressure sensor
Oil pressure
Compressor 1
Wired at the factory
TRFG ND9
16X2
Pressure sensor
Oil pressure
Compressor 2
Wired at the factory
TRFG ND9
16X4
Pressure sensor
Oil pressure
Compressor 3
Wired at the factory
TRFG ND9
15X5
Pressure sensor
High pressure
Heat pump
Wired at the factory
TRFG HD30
Power supply
Isolators for non-earthed conductors
■ The integral mains isolator must simul-
taneously isolate all non-earthed con-
ductors from the mains with a mini-
mum contact separation of 3 mm.
Danger
Incorrect electrical installations
can lead to life-threatening inju-
ries from electrical current and
result in appliance damage.
Connect the power supply and
implement all safety measures
(e.g. RCD circuit) in accordance
with the following regulations:
■ IEC 60364-4-41
■ VDE regulations
■ Technical connection require-
ments specified by the local
power supply utility
Danger
The absence of component
earthing can lead to serious injury
from electric current if an electri-
cal fault occurs.
■ Remake all earth connections
inside the heat pump.
■ Heat pump and pipework
must
be grounded to the equi-
potential bonding of the build-
ing.
Danger
Incorrect core assignment can
result in serious injury and dam-
age to the appliance.
Never interchange cores "L" and
"N".
Installation sequence
Overview of electrical connections
(cont.)
5848 449 GB
