Available as an indirect twin HIU, the range incorporates electronic and thermostatically controlled valves and works at low temperatures to maximise efficiencies. They integrate with Remeha’s offering of low carbon and condensing technologies to provide a low carbon plant room, optimising the opportunities Heat Networks can provide.

HIUs are suitable for retrofit or new build applications and further flexibility is offered with a range of optional accessories such as a jig/frame which can be installed at first fix phase.

  • Operates at low return temperatures – distribution pipework losses are significantly reduced. Allows centralised low or zero carbon technology to maximize efficiency, reducing carbon emissions.
  • Compatible with low carbon energy centres, for example, condensing heating and Combined Heat and Power products – complements the rest of the Remeha product suite to ensure easy operation and maximum fuel efficiency/performance.
  • Variable output from one single unit – the HIU meets the demand of a range of dwelling sizes and requirements.
  • Intelligent internal control to maximise efficiencies of heat leading to lower potential fuel usage
  • Domestic hot water plate pre-heat function for faster response to domestic hot water demand providing improved comfort for the end user.
  • Self-modulating control valve actuators – ease of use – a simple and intuitive technology
  • Differential pressure control valve as standard – increased comfort and efficiencies, allowing uniform primary flow.

LITERATURE FOR HIU Range

Download literature and product documents for the entire Remeha HIU Range by clicking the links below.

TECHNICAL INFORMATION

Click to download the technical specification for the HIU Range in PDF format

 

HIU T60/5

HIU T60/7

HIU E70/5

HIU E70/9

 

PERFORMANCE AND PRESSURES - HWS

HWS output (kW)

30-60

30-60 30-70(1) 30-70(1)

HWS delivery (l/min)

10.8-21.5

10.8-21.5

10.8-25.1

10.8-25.1

Cold water temp (°C)

10

10 10 10

Hot water temp (°C)

50 50 50 50

Hot water (ΔT °C)

40 40 40 40

Primary flow (°C)

75 75 75 75

Primary return (°C)

30-42
30-42
20-42 20-42

Primary (ΔT °C)

33-45
33-45
33-55 33-55
PHE primary loss (kPa) 12.2-25.4
12.2-25.4
12.2-25.4
12.2-25.4
PHE secondary loss (kPa) 15.1-53.2
15.1-53.2
15.1-71.4
15.1-71.4
Min pressure (bar) 0.5 0.5 0.5 0.5
Max pressure (bar) 10 10 10 10

PERFORMANCE AND PRESSURES - HTG

HTG output (kW)

1.5-5

7

1.5-5

7-9

HTG flowrate (l/min)

0.71-2.38

3.33

0.71-2.38

3.33-4.29

HTG flow temp (°C)

70

70

70

70

HTG return temp (°C)

40

40

40

40

HTG (ΔT °C)

30

30

30

30

Primary flow (°C)

75

75

75

75

Primary return (°C)

45

45

45

45

Primary (ΔT °C) 30 30 30 30
PHE primary loss (kPa) 0.11-0.99
1.82
0.11-0.99
1.82-2.88
PHE secondary loss (kPa) 0.71-1.57
2.78
0.20-1.57
2.78-4.27
Min pressure (bar) 1 1 1 1
Max pressure (bar) 2.8 2.8 2.8 2.8

CONNECTIONS (3/4 INCH)

**WRAS approved

Type Material Jig Fitted
 

MCWS**

Female Plated Steel Yes  

DHW outlet**

Female Plated Steel Yes  
District flow** Female Plated Steel Yes  
Distrcit return** Female Plated Steel
Yes  
Heating flow Female Plated Steel
Yes  
Heating return**
Female Plated Steel
Yes  
Safety valve discharge
Female Brass Yes  

ELECTRICAL

Electrical supply (volts)

230

230

230

230

Electrical frequency (Hz)

50

50

50

50

Electrical consumption (Watts)

75

75

75

75

Fuse rating (Amps) 3 3 3 3

CLEARANCE

Front x Side x Top x Bottom (mm)

50 x 50 x 50 x 50

50 x 50 x 50 x 50

50 x 50 x 50 x 50

50 x 50 x 50 x 50

DIMENSIONS (HxWxD)

HIU only (mm)

750 x 570 x 338

750 x 570 x 338

750 x 570 x 338

750 x 570 x 338

First Fix Jig (mm)

130 x 570 x 338

130 x 570 x 338

130 x 570 x 338

130 x 570 x 338

Combined (mm)

880 x 570 x 338

880 x 570 x 338

880 x 570 x 338

880 x 570 x 338

WEIGHT

HIU boxed - Delivery (kg)

55

55

55

55

HIU complete (kg)

48

48

48

48

First Fix Jig (kg)

4

4

4

4

VOLUMES AND PRESSURES

Exapnsion vessel - HTG (litres)

12

12

12

12

Safety valve setting (Bar)

3

3

3

3

PUMP DUTY - RESIDUAL

Grundfos UPM3 - heating (kPa) - Variant 1

44

44

44

44

Grundfos UPM3 - heating (kPa) - Variant 2

38

38

38

38

HEAT LOSS

Heat loss (k Wh/day)

0.384

0.384

0.384

0.384

RECOMMENDED OPTION

First Fix Jig

OPTIONS

Water Meter

Heat Meter

 
Data Module

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ENGINEERING EFFICIENCY SINCE 1935