CTC Union EcoZenith i555 Pro 1x230V, Installation And Maintenance Manual

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146 CTC EcoZenith i555 Pro
Primary flow sensor (B1, B2, B3). (B3) Or primary flow
sensor for CTC EcoComfort (passive cooling)
The sensors sense the outgoing temperature to the radiators.
Secure the primary flow sensor to the pipe using straps or similar. Most
important is the position of the tip of the sensor as this is the part that
detects the temperature. The sensor must be insulated to prevent the
ambient temperature from affecting the measurement. For optimum function,
use contact paste.
(B1) Sensor, primary flow to heating circuit 1
Position: on the primary flow to heating circuit 1.
The sensor is connected to the relay card in positions G13 and G14.
Sensor type: NTC 22k
(B2) Sensor, primary flow to heating circuit 2
Position: on the primary flow to heating circuit 2 after radiator pump G2. For
passive cooling, on the primary flow to.
The sensor is connected to the relay card in positions G15 and G16.
Sensor type: NTC 22k
(B3) Sensor, primary flow to heating circuit 3 Optional primary flow
sensor for CTC EcoComfort (cooling), accessory.
Position: on the primary flow to heating circuit 3 after radiator pump G3.
The sensor is connected to expansion card X3 in positions 13 and 14.
Sensor type: NTC 22k
Other sensors
(B5) Sensor, upper tank(factory fitted)
Placement: in the tank’s uppermost sensor pipe.
The sensor is connected to the relay card in positions G63 and G64.
Sensor type: NTC 22k
(B6) Sensor, lower tank(factory fitted)
Placement: in the tank’s middle sensor pipe.
The sensor is connected to the relay card in positions G65 and G66.
Sensor type: NTC 22k
(B7) Return sensor heating circuit
Position: on the return pipe from the heating circuit.
The sensor is connected to the relay card in positions G31 and G32.
Sensor type: NTC 22k
(B8) Flue gas sensor
Position: in a sensor pipe or on the flue gas jacket surface on the wood
boiler.
The sensor is connected to the relay card in positions G35 and G36.
Sensor type: NTC 3.3k
(B9) Sensor, wood boiler
Position: in a sensor pipe or jacket surface on the wood boiler.
The sensor is connected to the relay card in positions G61 and G62.
Sensor type: NTC 22k