COMPENSATOR FOR BOILER SEQUENCING DTC 648
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APPLICATION

In combination with 1,2 or 3 relay control modules ISC 648, DTC 648 can sequence two or more one- or two-stage boilers, with or without shut-off valves, for the control of the primary manifold or flow temperature in a heating plant, and control the temperature of a DHW plant.

• compatible.

• compatible.

Essential accessories:

• 1 detector on manifold or heating flow.

Optional accessories:

• 1 outside detector.

• 1 boiler detector.

FEATURES

• Power supply: 230 V ~.

• Consumption: 5 VA.

• DIN 105 x 115 modular enclosure.

• Protection: IP 40.

• Digital programming by means of four operating keys and alphanumeric display.

• Setting dates for heating season and automatic switching GMT- BST.

• Seven 24-hour programmes, two 7-day programmes, 25 holiday periods and one special period with date setting.

• Control temperature primary manifold or heating plant flow:

  • Fixed point.

  • Variable in relation to outside temperature.

  • Variable in relation to.temperature requested by heating zones with min. and max. flow temperature.

• Timed On-Off control of primary manifold or heating plant pump.

• Minimum and maximum limits flow temperature.

• Manual correction heating curve origin to compensate for seasonal weather changes.

• Eco Off  function.

• Summer plant exercise.

• Sequence: Manual inversion from display or timed automatic:

  • Control calorifier for production DHW: - On-Off control calorifier pump with timed events programmes independent of heating.

  • Antibacteria function: once a week at 70 °C for 90 minutes.

• One On-Off alarm input, one measurement input 4 ... 20 mA and one input flue gases temperature Pt 1 kΩ.

• Alarms for controller fault and for short or open detector circuits.

POSSIBLE COMBINATIONS

DETECTORS & ACCESSORIES