Domestic boiler cylinders

uniSTOR range

  • Slim line, pre plumbed and standard cylinders in the range
  • 2 year guarantee on parts and labour plus 25 year guarantee for the cylinder shell, giving you total peace of mind.
  • Can be retrofitted onto older systems meaning you can upgrade your cylinder without the hassle of the entire system.
  • Improved insulation meaning heat loss is minimised and lower running costs
  • Adjustable feet meaning the cylinder can be installed on uneven ground.

Overview

About the range

Why uniSTOR?

The high quality, stainless steel uniSTOR cylinder is a hot water storage facility, ideal for domestic properties with a new or existing sealed system or open vent boiler.

uniSTOR cylinders are ‘unvented’ cylinders which means they can operate efficiently under higher pressures, for example in a sealed heating system.

Available in a wide range of hot water storage capacities, the uniSTOR is suitable for almost all types of property with a sealed system or open vent boiler. Being suitable in particular for larger properties with multiple bathrooms, heating systems using a cylinder can often provide a higher level of hot water than a combination boiler.

Vaillant uniSTOR unvented cylinders can be used when converting from an open vented system (with a cold water tank in the loft) to a sealed system (boiler and cylinder system). Converting to a sealed system can help save space e.g. during loft conversions etc when there is no room for a tank, and in most cases will provide higher water pressure at your taps and shower.

By upgrading an old copper cylinder (with insulation jacket) to a new uniSTOR unvented cylinder (as part of a heating system upgrade), you can make your heating system more efficient by reducing your cylinder heat losses significantly, which in turn can help to reduce your fuel bills.

What's in the range?

  • 120 litre slim line pre plumbed cylinder
  • 150 litre slim line pre plumbed cylinder
  • 180 litre pre plumbed cylinder
  • 200 litre pre plumbed cylinder
  • 300 litre pre plumbed cylinder
  • 120 litre standard cylinder
  • 150 litre standard cylinder
  • 180 litre standard cylinder
  • 200 litre standard cylinder
  • 200 litre standard cylinder
  • 250 litre standard cylinder
  • 300 litre standard cylinder

Specifications

Specifications

Cylinder type 120 litre Slim-line pre-plumbed cylinder150 litre Slim-line pre-plumbed cylinder180 litre pre-plumbed cylinder200 litre pre-plumbed cylinder250 litre pre-plumbed cylinder300 litre pre-plumbed cylinder120 litre standard cylinder150 litre standard cylinder180 litre standard cylinder200 litre standard cylinder250 litre standard cylinder300 litre standard cylinder
Article number 001001920900100192100010019211001001921200100192130010019214002023526500202352660023526700002023526800202352690020235270
Insulation thickness
(mm)

40

40

40

40

40

40

40

40

40

40

40

40
Standby losses
kW /24h
1,37 1,641,11 1,22 1,44 1,59 0,83 0,861,11 1,22 1,441,59
watts/24h1370164011101220144015908308601110122014401590
ErP LabelCCBBBBAABBBB
Reheat time
(70%)
(min.)

15,155

17,031

20,706

22,127

30,338

34,65

14,29

17,84

17,84

23,41

30,338

34,65
Heat echanger power / coil rating (kW)
16,4

16,5

17,1

16,9

16,6

16,5

15,8

17,2

17,1

16,9

16,6

16,5

Heat exchanger surface(m2)

0,65

0,65

0.8

0,8

0,8

0,8

0,69

0,69

0,8

0,8

0,8

0,8

Primary flow rate (l/h)

900

900

900

900

900

900

900

900

900

900

900

900
Heat exchanger pressure drop (mbar)
41

41

47

47

47

47

44

44

47

47

47

47

Max. operating DHW temp
(°C)

85

85

85

85

85

85

85

85

85

85

85

85
Max. operating heat circuit temp(°C)
95

95

95

95

95

95

95

95

95

95

95

95
Primary heat exchanger flow & return connection
¾ “

¾ “

¾ “

¾ “

¾ “

¾ “

¾ “

¾ “

¾ “

¾ “

¾

¾ “
Immersion heater boss diameter
1 ¼“

1 ¼“

"1 ¼“

1 ¼“

1 ¼“

1 ¼“

1 ¼“

1 ¼“

"1 ¼“

"1 ¼“

1 ¼“

"1 ¼“
Cold & hot water connection
¾ “

¾ “

¾ “

¾ “

¾ “

¾ “

¾ “

¾ “

¾ “

¾ “

¾ “

¾ “
Size supplied expansion vessel
12

12

18

18

25

25

12

12

18

18

25

25
Immersion heater
230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz
Immersion heater power(kW)
3,0

3,0

3,0

3,0

3,0

3,0

3,0

3,0

3,0

3,0

3,0

3,0
Motorised 2-way valve
230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

230 V / 50 Hz

Downloads