Electrical connection
FIGHTER 1120
18
In this connection option the edge board connector for
the flow line sensor (FG) and return sensor (RG)
should be disconnected.
The flow temperature sensor (FG) is placed in the
submerged tube on the accumulator tank and con-
nected to the screw terminals X4:15—16.
The existing return sensor (RG) is disconnected from
the edge board connector and is connected to
X4:13–14.
See docking options 4.
Temperature sensor with
fixed condensing
The supplied sensor is connected using a two-wire
cable to terminal positions X4:11 and X4:12 on the
EBV card (2). The sensor is placed in a submerged
tube on the accumulator tank, e.g. VPA.
Temperature sensor for
hot tap water
The outside temperature sensor (15) must be installed
in a shaded location on a wall facing north or north-
west, where it will not be affected by any morning sun.
The sensor is connected to terminals X1:1 and X1:2
on the EBV-card (2). Use a two-wire cable of at least
0.5 mm
2
.
If the outside temperature sensor cable runs close to
power cables, screened cable should be used. All
conduits should be sealed to avoid condensation in
the outdoor temperature sensor capsule.
Outside temperature sensor
Connecting an external contact, for example, a room
thermostat (accessory) or a timer allows you to tem-
porarily or periodically raise or lower the flow tempera-
ture and with that the room temperature. Connected to
terminals X1:3 and X1:4 on the EBV-card (2). See
Menu 2.5 for settings.
External compensation
X1
X4
X4
2
X4
Flow line sensor (FG)
Hot water, jacket
Outside temperature sensor
External compensation 1
Return sensor (RG)
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