55
Terminals
Function
Explanation
Note
■ No parameters need to be set.
■ The compressor is "forced" off as soon
as the contact opens.
■ The supply voltage to the relevant com-
ponents (subject to power supply utility)
is switched off by the power-OFF contact
signal.
■ For the instantaneous heating water
heater, the stages to be switched off can
be selected (parameter "Output for
instant.htg wtr heater at power-OFF
790A").
■ The heat pump control unit power supply
(3 x 1.5 mm
2
) and the cable for the
power-OFF signal can be combined in a
5-core cable.
■ For further information regarding power-
OFF, see chapter "Power supply".
X3.8
X3.9
■ Type AWB-AC:
Contact humidistat and/
or frost stat, cooling
or
Jumper
■ Type AWB:
jumper
Floating contact required:
■ Closed: Safety chain has continuity.
■ Open: Safety chain interrupted; heat
pump shut down
■ Breaking capacity 230 V~, 0.15 A
Connect on site:
■ Connect in series if both safety compo-
nents are installed.
■
Insert jumper if no safety compo-
nents are installed.
X40.L1
Heat pump control unit
power supply:
Phase L1
X40.
?
Earth conductor
connection
X40.N Neutral conduc-
tor connection
Connected to 230 V~ power supply on
site.
Installation sequence
Electrical connection
(cont.)
5604 692 GB
Installation
