Heat Interface Units (HIUs)
In the pursuit of energy efficiency, district heating schemes supplied from a combination of traditional and renewable energy sources are becoming the industry norm for new build developments.
HIUs give consultants and engineers a reliable, eco-friendly solution, which provides efficient temperature control and user comfort.
Heat interface units are packaged hot water and/or heating production units for apartments, single or multi dwelling houses, industrial and commercial applications. Heat is produced on mass in an Energy Centre and fed to individual HIUs by a network of distribution pipework.
HIUs are compact in size, comparable to traditional wall hung boilers. They require minimal installation, have no flue requirement, so can be installed in a greater number of different locations and have low standby running costs.
The Emmeti range of HIUs contain proven quality components, intelligent controllers for efficient control and fast response and are a one size fits all solution (5 – 70kW) using specialized control valves.
Emmeti’s HIU range includes:
 | The Indirect Twin HIU, contains two plated heat exchangers for instantaneous heating and DHW production. Inside is a 12 ltr expansion vessel, heat meter, high efficiency Grundfos circulation pump and twin ESBE actuators which provide full electronic control over heat distribution. A thermostatic mixing valve is also installed for DHW scald protection. |
 | The Indirect Single HIU, is a heating only HIU, it contains a single plated heat exchanger for instantaneous heating production. Inside is a 12 ltr expansion vessel, heat meter, high efficiency Grundfos circulation pump and single ESBE actuator which provides full electronic control over heat distribution. |
| The Indirect Heating with DHW Cylinder HIU, provides direct heating to a DHW coil and indirect central heating via a plated heat exchanger. Inside is a 12 ltr expansion vessel, heat meter, high efficiency Grundfos circulation pump and single ESBE actuator which provide full electronic control over heat distribution. A 2-port zone valve installed on the DHW return pipe provides control over DHW production. |
| | The Indirect DHW with Direct Heating HIU, provides heating directly from the primary supply and instantaneous DHW production via a plated heat exchanger. Inside is a heat meter and twin ESBE actuators which provide full electronic control over heat distribution. A thermostatic mixing valve is also installed for DHW scald protection. |
Emmeti also offer a range of spares for the HIU range, including upgrade and replacement actuators. These include a weather compensating option. Pre-plumbing jigs for HIUs, MBUS heat meters and water meters.
