IVT Vent 402 - Module and Bus Connections; Installer Module and EMS Bus Connections

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Technical information

Vent 402 – 6721815546 (2021/03)

12.11.4 Installer module

Fig. 49 Installer module circuit diagram

Solid line = connected at factory

Dashed line = connected during installation

[1] Electric heater alarm

[2] ~ 230 V control voltage

[T0] Temperature sensor, flow

[T1] Outside temperature sensor

[TW1] Temperature sensor, DHW

[TC0] Temperature sensor returned

[TC1] Temperature sensor, flow

[TC3] Temperature sensor condenser out

[TL2] Air inlet temperature sensor

[TR6] Temperature sensor, hot gas

[TR4] Temperature sensor, evaporator

[PC0] Heat transfer medium primary circuit pump, 2 outputs:

power supply 230 V and activation pulse width modulation

[MR1] High pressure switch

[PL3] Fan, 2 outputs: power supply 230 V and activation 0–10 V

[MR0] Low pressure switch

[FE] Alarm overheating protection

[K2] Electric heater contactor EE2

[K1] Electric heater contactor EE1

[PW2] DHW circulation pump

[K3] Compressor relay ER1

[VW1] Diverter valve

[PC1] Circulation pump heating circuit

[F50] Fuse 6.3 A

Put CAN BUS termination switch in "ON" position.

P = A electric heater 13.5 kW 3 ~

P = 1 electric heater 9 kW 3 ~

P = 2 electric heater 1-2-3 kW 1 ~

A = 0 standard setting

Max. utilisation relay 2 A, cos >0.4. Max. circuit board total utilisation:

6.3 A.

0010020618-002

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