GE556-2

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High-efficiency electronic Heat Interface Unit (HIU) for centralized systems, for managing high/low temperature heating and domestic hot water production.
- Heat exchanger for the instantaneous production of DHW
- Electronic thermoregulation unit with fixed point (Set-Point) for managing the domestic hot water temperature and the climatic heating curve, with external probe support (included)
- Remote control with chronothermostat function to manage the parameter (for single zone), (included)
- Flow switch for domestic hot water priority command
- Three-way motorized diverting valve
- Two-way motorized mixing valve
- Self-modulating circulator (ErP 2009/125/EC)
- Filter and manual air-vent valve on primary side
- Adjustable by-pass and static balancing lockshield on heating side
- Safety valve on heating side
- Safety pressure switch for low pressure
- Domestic hot water temperature control probes (heating and primary return)
- Fully insulated pipes
- Box with terminal board for electric connections
- Brass and plastic spacers for installation of thermal energy meter and domestic water meter
- Energy savings: reduction of the flow rate requested from the primary line, and reduction of the primary return temperatures
- Heating temperature range: low temperature: 25÷45 °C / high temperature: 25÷85 °C
- DHW temperature range: 30÷60 °C (Set-point 48 °C)
- Max. working temperature: 90 °C
- Max. working pressure: 10 bar

- Dimensions and notes:
•GE556Y401: 450 x 630 x 180 mm
Heating and domestic hot water production
Heat exchanger power: 58 kW
•GE556Y402: 450 x 630 x 180 mm
Heating and domestic hot water production
Heat exchanger power: 67 kW

To complete the GE556-2 HIU, the following may be ordered separately:
- Thermal energy meter, GE552 series
- Domestic water meter, GE552-2 series
- Templates for installation in worksite, GE551-2 series
- Components for M-Bus data centralization (GE552-4 series),
or Wireless M-Bus data centralization (GE552-W series)