Hydraulic Components

SDC / DHC

 

 

Note that bus addresses can only be issued once. Duplicated addresses cause problems on the data bus.

7.3.11.2Control functions via the data bus

7.3.11.2.1Boiler start-up protection

If the selected heat generator operates with boiler start-up protection, it signals the status of start-up protection to all the corresponding heating circuits. They block the energy tapping (pumps off, mixed heating circuit closed) for the period of the start-up protection.

7.3.11.2.2Indirect return increase

The heat generator in the base unit (addr. 10) transmits its current boiler data, and each mixed heating circuit in the system can carry out indirect boiler return increase.

7.3.11.2.3Tank control mode (tank priority operation)

Each central device can carry out hot-water circuit loading. For loading in priority operation, hot-water circuit loading that has been started disables all other heating circuits and hot-water circuit loading within the bus system. If tank loading occurs in parallel operation, all heating circuits in the system remain active and an additional hot-water circuit loading with set parallel operation can be activated.

7.3.11.2.4Heating circuit demand

Each heating circuit demand within the data bus system is processed by the base unit (addr. 10). It takes on the greatest demand and passes it on to the heat generators as a setpoint value. A selected manual mode with manual temperature specification also counts as demand.

7.3.11.2.5Clock synchronisation

The time of day is sent to the entire system by the base unit (addr. 10). There is a system time.

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EN2H-0221GE51 R0808

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Honeywell EN2H-0221GE51 R0808 Tank control mode tank priority operation, Heating circuit demand, Clock synchronisation
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EN2H-0221GE51 R0808 specifications

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