90
Terminals
Function
Explanation
X3.6
X3.7
G
Power-OFF
Requires floating
N/C
contact:
■ Closed: No blocking (safety chain con-
tinuous)
■ Open: Blocking active
■ Breaking capacity 230 V~, 0.15 A
If a power-OFF contact is connected, no
jumper should be installed.
Note
■ No parameters need to be set.
■ The compressor is "forced" off as soon
as the contact opens.
■ The power-OFF contact signal causes
the supply voltage to the relevant func-
tion components to be switched off
(subject to power supply utility).
■ For the instantaneous heating water
heater, the stages to be switched off
can be selected (parameter "Output
for instant. heating water heater at
power-OFF").
■ The power supply for the heat pump
control unit (3 x 1.5 mm
2
) and the cable
for the power-OFF signal can be com-
bined in a 5-core cable.
■ For further information regarding pow-
er-OFF, see chapter "Power supply".
X3.8
X3.9
P
Primary circuit pressure
switch and/or frost stat
or
Jumper
Floating contact required:
■ Closed: Safety chain has continuity
■ Open: Safety chain interrupted; heat
pump shut down
■ Breaking capacity 230 V~, 0.15 A
On-site connection:
■ Connected in series if both safety com-
ponents are installed
■
Insert jumper if no safety compo-
nents are installed
Installation sequence
Electrical connections
(cont.)
5609 667 GB
