40
Clamps
Function
Explanation
LP1 X3.2
LP1 X3.14
or at external
EA1 extension
Signal "External blocking" (external
blocking of compressor and pumps,
mixer in control operation or
CLOSE)
Requires floating
N/O
contact:
■
Closed: blocking enabled
■
Open: no blocking
■
Breaking capacity 230 V~, 2 mA
Note
■
The system may no longer be protected against frost
■
These and further external functions, such as provision
of external set values, can alternatively be connected
via external EA1 extension.
Installation instructions "EA1 extension"
LP1 X3.3
LP1 X3.4
Flow switch for well circuit or jump-
er
Requires floating contact:
■
Closed: heat pump operational
■
Open: heat pump shut down
■
Breaking capacity 230 V~, 0.15 A
No
jumper should be installed if a flow switch is connec-
ted.
LP1 X3.6
LP1 X3.7
G
Power-OFF or jumper
Requires floating
N/C
contact:
■
Closed: no blocking (safety chain continuous)
■
Open: blocking enabled
■
Breaking capacity 230 V~, 0.15 A
Note
■
No parameters need to be set
■
No
jumper should be installed if a power-OFF contact
is connected.
■
The compressor is "forced" off as soon as the contact
opens.
■
The power-OFF signal switches off the supply voltage
of the respective working part (subject to the power
supply utility).
■
For the instantaneous heating water heater, the stages
to be switched off can be selected (parameter
"Output
for instant. 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 combined in a single 5-core cable.
LP1 X3.8
LP1 X3.9
P
Primary circuit pressure switch
and/or frost stat
or
Jumper
Requires floating 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 components are in-
stalled
■
Insert jumper if no safety components are installed
Installation sequence
Electrical connections
(cont.)
5838144
Installation
Содержание Vitocal 300-G Pro BW 302.D090
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