MTA
DHW
The MTA DHW is an indirect single plate heat interface unit designed to provide either instantaneous domestic hot water (DHW) in an apartment, detached property, office building or similar when connected to a central energy source within a heat network. The production of instantaneous DHW minimises the risk of legionella bacteria multiplying since no hot water is stored. There are two models available, the MTA Eco DHW and the MTA Plus DHW.
SWEP AS 316 heat exchanger (MTA Eco)
SWEP LAS AISI 316 heat exchanger (MTA Plus)
Ultra-compact dimensions
Fully electronic unit
Keep warm function (On/Off/Timed)
10bar rated
Unique HydraBlok® back plate
Primary flow rate limitation
Advanced diagnostics
Remote connectivity
First fix kit supplied as standard
Servicing and parts replacement from front
Isolation & drain valves fitted as standard
Labelled water connections
Closed-cell foam insulation cover
Optional flushing bypass valve available
Optional top entry pipe kits available
Features in detail
Unique HydraBlok® back plate
Most other heat interface units available on the market are often a myriad of metal pipework and brass fittings. With this type of HIU every union is a potential source of a water leak, as the unions often loosen during transportation from the factory to the point of use. The MTA has little potential for leaks as it is not fitted with metal pipework and brass fittings. Everything is built upon a unique HydraBlok® backplate which contains all waterway channels moulded within a composite chassis.
Return temperature limitation
To ensure the heat network operates at maximum efficiency, the MTA will modulate the rate of water flow provided by the internal apartment heating circuit pump to match the heat load of the apartment at any one time. This maintains the designed heating circuit ΔT and limits the temperature of the water returning to the primary circuit.
Primary flow rate limitation
The MTA can limit the primary flow rate in both DHW and heating mode, independently of each other. Limiting the maximum flow rate that the HIU can take from the primary system, during space heating production, guarantees the design flow rate used to calculate system demand, is not exceeded.
Advanced pump control
The MTA features 24 hour pump exercising - if the heating circuit has not been used for 24 hours, the MTA will run the pump (and open the heating regulation valve) for 10 seconds, ensuring debris cannot build up in the pump bearings. The MTA also features a low pressure cut out. If the heating circuit pressure falls below 0.4bar, the pump will stop running. The unit will continue to produce DHW.
ModuHub (optional extra)
ModuHub enables remote monitoring and control of the MTA heat interface unit, enabling network operators to continuously optimise their heat networks, ensuring reduced running costs whilst improving service quality for the end users.
It can also be used to detect and alert maintenance providers to possible faults, allowing faults to be resolved remotely and considerably reducing the number of planned service/maintenance visits to site.
ModuHub creates an open protocol wireless billing network, removing the requirement for an Mbus network. Through our open API, meter reads can be retrieved by billing providers using LoRa Communication. Moduhub can be utilised for both prepayment or credit billing.
The ModuHub box is small and compact, allowing it to fit within the MTA casing.
