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Velux Solar Hot Water Heating System

While everyone wants a home that is warm and comfortable, increasingly people are also looking for optimum energy efficiency; and with ever expanding awareness of the impact of energy consumption on the environment, there is demand for environmentally-friendly energy solutions.

The Velux solar hot water heating solution combines flair for exceptional roof products with energy produced by the sun to create an integrated water-heating system that is ideal for new and existing properties.
 
Employing exceptional design standards, it is a complete system that is easily integrated into good house design, conforming with the latest Government renewable energy initiatives and comes with the kind of guarantee package that you would expect.
 
The system is manufactured to the highest standards, is easy to work with, and the entire integrated system is supplied as a single stock item ready to be installed. The solar hot water tank is guaranteed for 10 years from the date of manufacturing, provided the protective magnesium anode has been tested regularly. All accessories and components are guaranteed for 3 years. Velux solar collectors and flashings are guaranteed to comply with the standard industry home warranty of 10 years.
 
As well as this, Velux is also an accredited member of consumer protection scheme REAL assurance. That means extra peace of mind for you – and your clients.
 
Product Benefits
 
  • Your Velux Solar Hot Water System can help you play your part in reducing global carbon emissions as it provides up to 70% of your home’s hot water requirements.
  • Going green with renewable energy does not mean you have to forfeit aesthetics. Velux solar collectors integrate harmoniously with their surroundings to ensure a visually attractive roof design.
  • The Velux Solar Hot Water System has been fully approved and has strong ties with independent certification schemes and specialist government accredited installers to give you complete peace of mind.
  • A Velux system is supplied to your installer as a complete solar hot water package. This ensures total compatibility between components, thus providing optimum performance.
  • You can expect the same premium quality from a Velux solar range as you have always known from our windows.

Free delivery on orders over £100
or £10 delivey charge applies.
We aim to deliver within 48 hours
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Technical Information

The system contains all elements necessary for installation, including – solar collector(s), underfelt sealing collars, appropriate flashings, control unit/pump station, dual coil hot water cylinder, pre-insulated flow and return pipes, micro air bubble separator and safety mixer valve to ensure a constant supply of safe hot water to taps. Velux solar cylinders are also easy to connect to existing heating systems.

System Servicing
 
Servicing should only be carried out by a competent installer in the installation and maintenance of unvented/vented solar water systems.
 
  • Any spare parts used during a service must be authorised Velux parts.
  • Always disconnect the electrical supply before removing any electrical equipment covers.
  • Never bypass any thermal controls or operate system without the necessary safety valves.
  • Water contained in the Velux solar hot water system may be very hot, especially following a thermal control failure. Caution must be taken when drawing water from the unit.
Typical Solar Hot Water System    

Typical Solar Hot Water System
Up to 2 People
3-4 People
5-6 People
Solar collector(s)
1 x U12
2 x U12
3 x U12
Collector area (gross)
2.5m²
5m²
7.5m²
Flashings suitable for profiled or slate roof
Yes
Yes
Yes
Connection pipes
No
Yes
Yes
Solar tank
TFF 200 0201
TFF 300 0201
TFF 400 0201
Volume
180 litres
280 litres
375 litres
Weight
85kg
120kg
140kg
Dimensions (d x h)
540 x 1432mm
600 x 1794mm
700 x 1591mm
Control unit/pump station
Yes
Yes
Yes
Safety mixer valve
Yes
Yes
Yes
Expansion vessel(s)
Yes
Yes
Yes
Micro bubble air separator
Yes
Yes
Yes
Glycol
Yes
Yes
Yes
Flexible flow and return pipes
10m
10m
10m
Underfelt seating collars
Yes
Yes
Yes

Collector Technical Details
 
 
Velux Solar Collectors (variant 4000)
M08
S06
S08
U12
Weights
Gross Weight (kg)
29
36
41
64
Net Weight (kg)
26
33
38
59
Areas
Gross area (m²)
1.2
1.4
1.7
2.5
Aperture area (m²)
0.9
1.2
1.4
2.2
Absorber area (m²)
0.9
1.2
1.4
2.2
Litres
0.9
1.3
1.5
2.2
Max operation pressure (bar)
6
6
6
6
Test pressure (bar)
10
 
 
10
Heat capacity (kJ(m²K))
8
 
 
7.4
Angle Factor(Kdr50º)
0.93
 
 
0.95
Stagnation Temperature (ºC)
185
 
 
190
Efficiency
etao (start efficiency)
0.7970
0.7900
0.7900
0.7900
a1 [W/(m²K)]
4.1770
3.7560
3.7560
3.7560
a2 [W/(m²K²)]
0.0039
0.0073
0.0073
0.0073
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