Tee fitting with sensor pocket ver. 1
Pos.
Item
A
Flow direction
B
Tee fitting
C
Sensor probe in pocket
D
Sensor pocket connection
Using a tee connector to install a sensor pocket in a small-diameter pipe.
Sensor cable
The cable can be extended if required. Use a regular insulated copper twin cable for
connecting the cable and extending the cable (0.5 mm
2
, length < 40 m).
● Join or splice the cable ends in a way that causes no additional electrical resistance
in the wires.
● Protect the joint against moisture and oxidation.
3.4 Heating water temperature, return to condenser (ECO)
In ECO heat pumps, the buffer tank sensor (TE255) and the heating water return
sensor (TE201) share the same sensor input (B2) and terminal on the terminal block
(X3:2). Only one of the sensors can be connected to the terminal block at a time. The
unit comes with the buffer tank sensor connected, which means that condenser return
temperature measurement is disabled by default.
The unit has a built-in condenser return temperature sensor (TE201), but the sensor
is not connected to the switchboard. The sensor can be connected to the terminals
occupied by the heating circuit flow sensor (TE212) or the DHW sensor (TE266),
provided that one of these is not in use. Additionally, the number of free sensor
inputs can be increased by installing an auxiliary controller (available as an optional
accessory).
3.5 Heating circuit’s control valve
The heat pump can control both 230-V 3–point control valves and 0–10-V (24 V)
control valves. See the instructions for connecting the control valve actuator to the heat
pump in the unit’s electric diagram.
The control outputs for both valve types are enabled by default (and are simultaneously
active), so there is no need to activate them. The position of the valve is indicated in
the piping diagram. For the heat pump to be able to automatically regulate the valve,
the heating circuit needs to be equipped with a flow temperature sensor.
Control valves are available as optional accessories (see section
Accessories
).
30 (59)
M8006 2314EN
