Ruck ETA K 1200 V W, Сборка и руководство по эксплуатации, Страница: 16 / 60

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English
Tel. +49 7930 9211-0 Fax +49 7930 9211-150
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The unit may only be operated with the correct overcurrent protection.
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This must be established by a qualified electrician.
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The recommended protection is shown in the enclosed wiring diagram.
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Pre-fuse 16 A up to max. voltage of 240 V.
7.1. Overcurrent protection
7.2. Description external inputs and outputs
Unit enabling
The unit can be switched on and off with an external potential-free contact (see wiring diagram). An
external voltage must never be applied to this connection. The control system would be destroyed.
Any devices providing a potential-free contact (e.g. central building control system) can be used to
control the unit. This contact must be securely isolated from external voltages because otherwise
dangerous conditions might occur in the event of a fault.
The extra-low voltage control cables must be laid separately from the mains cables.
Motion detector
A motion detector can be connected to the controller. When the contact is closed, the device changes
to the operating mode „Intermittent ventilation“ with the preset follow-up time according to parameter
30.
External, potential-free contact.
Circulation pump enable
A circulation pump can be connected to the controller (see circuit diagram). If heating is required,
the heating valve is opened by the controller and the circulation pump output is activated. Any pump
connected must be inherently safe and block-proof.
Electrical connection with Vmax =230 VAC and Imax=2 A.
Fire detector
An external, potential-free fire detection contact switches the device off. The display indicates „Error
fire protection“. This signals requires a manual reset.
Modbus RTU
The communication interface with Modbus RTU protocol is already integrated as standard. The cen -
tral building control system can be connected directly to the integrated interface via Modbus. Multiple
devices can be connected to the bus with an adapter board as accessory.
The unit can be visualized using the ruck view software software. All parameters, measured and set
values can be controlled with ruck view.
3-way valve heating
Temperature control for the optional warm water heating coil, e.g. active heating to cover the heating
demand by the ventilation system. Control output 3-position. Control output 230V.
3-way valve cooling
Temperature control for the optional cold water cooling coil, e.g. active outdoor air cooling by the
ventilation system. Control output 3-position. Control output 230V.
0-10V heating / 0-10V cooling
Control output for 3-point control or DX-coil.
P 22 0 = Heating (Water) 0-10V Parallel to the 3-point control heating
1 = Cooling (Water) 0-10V Parallel to the 3-point control cooling
2 = Heating and cooling (Water) If contact Enable Cooling opened, 0-10V heating
If contact Enable Cooling closed, 0-10V cooling
3 = Heating condenser and cooling DX-coil If contact Enable Cooling opened, 0-10V heating
If contact Enable Cooling closed, 0-10V cooling