38
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 func-
tion components 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. heating water heater at
power-OFF 790A").
■ 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
■ Type AWB-AC:
Frost stat and/or contact
humidistat, cooling
or
Jumper
■ Type AWB:
Jumper
Requires zero volt
N/C
contact:
■ Closed: Safety chain has continuity
■ Open: Safety chain interrupted; heat
pump shut down
■ Breaking capacity 230 V~, 0.15 A
Connection:
■ Connected in series, if both safety com-
ponents 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 conductor
connection
Power supply 230 V~, see from
page 46.
Installation sequence
Electrical connections
(cont.)
5782 176 GB
