HSUDC/HSUIC Unvented Range

These unvented cylinders are ideal for domestic use, safely providing all the advantages of mains pressure hot water demanded by today’s consumer. Available as either direct-acting (HSUDC) – for use when electricity is the only power source – or indirect-acting (HSUIC) models for use with electricity, gas or an oil fuelled boiler.

Designed for easy installation and use, and manufactured to a high standard, they have a 10-year onsite parts and labour warranty*.

  • High performance for showers and balanced mixers
  • High flow rates and fast recovery rates
  • Duplex stainless steel for longer life
  • Thermoplastic/corrosion-proofed steel outer casing
  • Adjustable temperature control with redettable safety cut-out and 'power-on' neon
  • Factory fitted temperature and pressure relief valve
  • Meets latest european heat loss requirements

HSUDC/HSUIC

  

100

120

150

170

210

250

300

Storage Capacity

litres

100

120

150

170

210

250

300

Rating*

HSDUDC kW

3

6

6

6

6

6

6

 

HSUIC kW

3

3

3

3

3

3

3

Heat Up Time : Cold to 45°C

****HSUDC min

99

121

152

173

215

257

310

 

HSUIC min

24.4

27

27

30

34

38

45

Recovery Time: 70% Draw Off

****HSUDC min

68

83

105

120

150

183

220

 

HSUIC min

18

22

21

24

26

27

33

Overall Height

mm

784

906

1090

1216

1474

1726

2040

Weight Laden

HSUDC kg

124

146

179

201

252

295

355

 

HSUIC kg

125

147

181

204

257

301

360

Primary Flow/Return Connections*

mm

22

22

22

22

22

22

22

Cold Feed/Hot Draw Off Connections

mm

22

22

22

22

22

22

22

Operating Pressure

bar

3.5

3.5

3.5

3.5

3.5

3.5

3.5

Maximum Water Supply Pressure

bar

16

16

16

16

16

16

16

Expansion Vessel Charge Pressure

bar

3.5

3.5

3.5

3.5

3.5

3.5

3.5

Expansion Valve Setting

bar

6

6

6

6

6

6

6

Temp/Pressure Relief Valve Setting

bar/°C

10/90

10/90

10/90

10/90

10/90

10/90

10/90

Maximum Primary Working Pressure***

bar

3

3

3

3

3

3

3

WRAS Approved CE

* Figure shown for direct models is 1 x 3kW element for 100 model and 2 x 3kW elements for other sizes. Indirect models are all a single-element of 3 kW.
** Recommended, however a 15mm connection may be used with sufficient pressure.
*** Indirect units only
**** Using lower element only. All units have: an overall diameter of 550mm

Selector Guide

Property Type

Direct Model

Indirect Model

Bedsit

HSUDC100/HSUDC120

HSUIC100/HSUIC120

1/2 bed with 1 bath/shower

HSUDC150/HSUDC170

HSUIC150

3 bed with 1 bath/shower

HSUDC170/HSUDC210

HSUIC150/HSUIC170

4 bed with 1 bath/shower

HSUDC210/HSUDC250

HSUIC170/HSUIC210

2/3 bed with 2 baths/showers

HSUDC210/HSUDC250

HSUIC210

4/5 bed with 2 baths/showers

HSUDC250/HSUDC300

HSUIC210/HSUIC250

4/5 baed with 3 baths/showers

HSUDC300

HSUIC250/HSUIC300

Light Commercial usage

HSUDC250/HSUDC300

HSUIC250/HSUIC300

* The cylinder is guaranteed for 10 years with the exception of the expansion vessel, which is guaranteed for 5 years, and valves, fittings and electrical parts which are guaranteed for 2 years.

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