3 Heating circuits
3.1 Buffer tank
Enable the buffer tank from
Initial Setup
settings (see chapter
Commissioning
) or from
Heating
settings (Device settings → Service → Heating, see the table below).
Heating
The
Heating buffer sensor
setting determines the heat source used by heating circuits: either the heat
pump's condenser or a buffer tank. Select other circuit equipment from each circuit’s settings.
Not connected
The heat pump is connected directly to the building’s heating system without a
buffer tank. No buffer tank sensor is connected. There can be an (unpowered)
instantaneous water cylinder, but not a buffer tank regulated by the heat pump.
Heating buffer
sensor
Connected
The heat pump is connected to a buffer tank which is regulated by the heat pump.
The tank is equipped with a temperature sensor which is connected to the heat
pump. Any heating circuits in the system are connected to the buffer tank.
Buffer
Buffer tank temperature.
You can enable the buffer tank only if buffer tank temperature measurement is enabled.
The temperature sensor used for this is the buffer tank sensor (TE255). See the
instructions for installing the sensor in section
Buffer tank sensor
.
3.2 Buffer tank sensor (CUBE, ECO)
ECO heat pumps come with the buffer tank temperature sensor (TE255) already
connected. In CUBE heat pumps, the sensor is an optional accessory.
Accessory
Temperature sensor NTC10k 5 m
Item code
36217266
Description
Sensor with flexible cable (length: 5 m), metallic probe (diameter: 6 mm, length: 50
mm), 1xNTC 10 kOhm, 2 wires, B(25/85)=3976, t
0.9
7 s
Intended use
Buffer tank temperature TE255
Heating circuit flow temperature TE212, TE222, TE232
● Buffer tank temperature
● DHW tank temperature
● Heating circuit supply temperature
Connections (CUBE)
The connections for the buffer tank sensor are indicated in the unit’s electric diagram.
To connect the storage tank sensor, disconnect sensor TE201 from terminal block X3’s
terminals 2 and M and connect storage tank sensor TE201 in its place (either wire in
either terminal). Protect the exposed wire ends of the disconnected sensor cable.
Located inside the unit, the disconnected sensor (TE201) is used to monitor the
temperature of the heating water return line (‘condenser in’). If there is a buffer
tank in the heating circuit, the sensor is not in use. If you wish to enable both the
M8006 2314EN
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