ModuSat XR SP DHW interface unit

ModuSat® XR Single Plate Domestic Hot Water Interface Unit

  • Instantaneous Domestic Hot Water
  • Compact and wall mounted to fit perfectly in a utility room or kitchen cupboard
  • Fast and Responsive DHW Performance
  • Low DHW Return Temperatures
  • Well suited to residential buildings with existing heating provision, such as Electric storage systems, or Hotels where VRF systems supply Heating & Cooling

Contact us

Contact us on 01372 722277 for further information or a quotation.

ModuSat® XR Single Plate Domestic Hot Water
(SP DHW) Interface Unit

Our ModuSat® XR SP DHW interface unit has been designed as a simple solution for providing instantaneous hot water in communal and district systems.

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HIU with fast and responsive hot water icon

Fast & Responsive DHW Performance

Delivering a fast and responsive domestic hot water response as standard, ModuSat® XR provides hot water to the tap within seconds, ensuring high levels of user comfort and convenience, and in addition –

  • Reduced energy waste;
  • Minimised network return temperature;
  • Reduced heat loss and;
  • Reduced water consumption.

This is achieved through the combination of electronically controlled, pressure independent control valves (PICV) with fast acting actuators; and a self-learning control algorithm, which enables demanded output volume and temperature of water to be quickly and accurately matched.

Smart Energy Regulation and Control

Our Smart Energy Regulation and Control provides a myriad of benefits in terms of HIU performance and optimisation of heat network efficiency. So how does it work?

  • Pressure Independent Control Valve (PICV) provides integrated differential pressure control, providing balanced, self-configuring flow through the HIU
  • Fast acting, electronically regulated actuators provide immediate response to changes in energy demand
  • Proportional Integral Derivative (PID) control logic provides accurate actuator/valve control and fast response to hot water demand, without “overshoot” (Reduces energy wastage)
  • Electronically actuated PICV’s also function as a shut off valve, so ModuSat® Smart HIU’s can easily be configured for either credit or PAYG billing systems
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Low Domestic Hot Water Return Temperatures

Evinox ModuSat® XR models significantly exceed industry best-practice minimum requirements to provide DHW return temperatures below 25ºC to the primary network.

This contributes to excellent annual Volume Weighted Return Temperatures and system operating efficiency. These impressive return temperatures are achieved by incorporating ultra-high efficiency domestic hot water plate heat exchangers with improved volumetrics that encourage turbulent flow.

Metering and Billing Ready

The Heat Network (Metering & Billing) Regulations (2014) require each resident to be billed individually for the proportion of the total heat they consume from the heat network.

Our ModuSat® units make this easy, featuring an integrated ultrasonic heat meter, which is MID approved with class 2 accuracy (BS EN 1434), ready to connect to a communication network for metering and billing purposes.

In addition, our PaySmart® pre-payment technology is also integrated into each ModuSat® heat interface unit as standard, and – unlike many other pre-payment billing solutions – can easily be activated remotely at any time and requires no additional hardware or infrastructure to set up.

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Technical details

ModuSat® XR Single Plate Domestic Hot Water (SP DHW) Interface Unit

ModuSat® XR Single Plate DHW Heat Interface Units Heat interface unit for instantaneous domestic hot water (DHW), with electronic PID control using a Pressure Independent Control Valve (PICV) with modulating actuator, providing a low DHW primary return temperature as well as differential pressure control and flow rate regulation.


The ModuSat® XR Single Plate DHW unit is compact and wall mounted, meaning it fits perfectly in an apartment utility room or kitchen cupboard, and offers a simple solution for providing instantaneous hot water in communal and district systems.

These units are designed to operate with the Evinox SmartTalk® two-way communication system for remote metering and diagnostics.

Domestic Hot Water

Domestic hot water is heated via a plate heat exchanger and the temperature is regulated by the modulation of primary flow rate with the integrated PICV actuator.


Features & Benefits

  • A range of sizes available to suit small studio apartments or large family homes
  • Ultrasonic heat meter MID approved and class 2 accuracy (BS EN 1434)
  • Excellent thermal efficiency achieved using the latest technology and efficient brazed stainless steel PHE’s
  • Integrated PaySmart® technology ready for prepayment billing upgrade (activated remotely at any time)
  • Billing app for use on smartphones and tablets
  • ViewSmart room controller with optional upgrade to provide ENE3 compliant Energy Display Device
  • Electronically controlled PICV for primary flow rate modulation to match demand, differential pressure control and energy shut-off
  • WRAS approved
  • Pipework constructed from copper
  • External filling loop (Optional)
  • SmartTalk two-way communication
  • Remote monitoring, alarms, and diagnostics
  • Wilo PWM Pump – Provides compliance with EU ErP Directive 2015
  • Includes inbuilt TCP/IP technology to operate on an Ethernet network if required
  • Capable of reading an electricity meter (Option for ENE3)
  • Flushing bypass kit enables the primary side of the system to be flushed and cleaned without damage to the unit

Download the Data Sheet

ModuSat XR Single Plate DHW Data Sheet

ModuSat XR Single Plate DHW Data Sheet

Find Out More by Downloading the Brochure Using the Form Below

Discover how Evinox Energy can deliver the best HIU solution for your next new build or refurbishment heat network project

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Heat Networks

  • District and Communal Heat Networks
  • Delivery of low carbon heating
  • Heat Interface Units
  • Energy Metering and Billing
  • Service and Maintenance
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Energy Metering & Billing

  • Credit Billing Services
  • PaySmart® Pre-payment System
  • Billing Solutions for Non Evinox Equipment
  • Heat Network (Metering & Billing) Regulations 2014 Advice and Guidance
  • Domestic Heat Meters and Point of Entry & Bulk Meters
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Service & Maintenance

  • Heat Interface Unit Service & Maintenance
  • Plant Room – Planned Preventative Maintenance (PPM)
  • ModuSat® Heat Interface Unit Enhanced Warranty Cover
  • Combined Packages for Metering, Billing and Service & Maintenance
  • Domestic Boiler Service & Maintenance