DEGREE-DAYS METERING UNIT OPTIONAL TELEMANAGEMENT XGG 618
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• TELEMANAGEMENT C-Bus: Enabled using ACB 460 accessory.

APPLICATION

Meters winter degree-days in each individual building and permits:

• Calculating heating costs.
• Keeping under control the overall efficiency of the plants.
• Program fuel requirements.

Essential detectors:

• 1 outside sensor for metering degree-days.

FEATURES

• Power supply: 230 V~.

• Consumption: 5 VA.

• DIN 105 x 115 modular enclosure.

• Protection: IP 40. 

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

• Automatic switching GMT - BST.

• Metering:

  • Standard degree-days:

    • Difference between mean daily (24 hour) outside temperature and the reference room temperature of 20 °C.

  • Room degree-days:

    • Difference between the mean daily (24 hour) outside temperature and a room temperature which can be set. Metering enabled by external. control.

  • Hours of operation:

    • Hours devices switched on (presence of power).

• Data logger:

  • One daily recording of all counts.

  • Max. 366 recordings.

  • Display with dates.

Code		Description	Data sheet
XGG 618		Degree-days metering unit.	H 111
ACB 460		Plug-in for communication via .	-

DETECTORS AND ACCESSORIES