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All in one design with thermostatic mixing valve and temperature maintaining bypass.


Heating interface unit for hot water services in commercial buildings

All in one design with thermostatic mixing valve and temperature maintaining bypass.

Key features

Complete systems for decentralised hot water distribution

Producing hot water via the heat exchanger.

Considerable savings in installation costs

Central risers and decentralised distribution. Domestic hot water flow and return pipes are no longer required.

Lower maintenance costs

No additional costs for consumption settlement, each unit is recorded separately.

Technical description


Supply of hot as well as cold water and heating to apartments in multiple-dwelling buildings, hotels, hospitals and elderly homes with actual consumption accounting.


Draw-off volume 17 l/min and 30 l/min when heating hot water.
Normal conditions with:
Heating supply pipe: 65°C
Cold water inlet: 10°C
Hot water outlet: 50°C
Cold water pressure: min. 2 bar

Pressure class:

PN 10


Max. working temperature: 90°C


Heat exchanger: Copper soldered stainless steel AISI 316
PM regulator: DZR brass
Piping material: Stainless steel AISI 316L.
Capillary pipes: Copper
Cabinets: Powder-coated sheet steel


More information on RTL – see separate technical leaflet.

The products, texts, photographs, graphics and diagrams in this document may be subject to alteration by IMI Hydronic Engineering without prior notice or reasons being given. For the most up to date information about our products and specifications, please visit www.imi-hydronic.com.