The
Problem [back
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Modern well insulated homes with
central heating suffer air pollution up to 10 times worse than outside,
according to a 'Which' report.
Surveys by the (Department of
Environment Transport Region) DETR and the
Building Research Establishment (BRE) have Carbon Dioxide levels in one
in ten British homes above World Health Organisation guidelines.
Current Building Regulations call for
extractor fans in all wet areas of the property including the kitchen,
bathroom, utility, en-suite, WC and trickle vents in all the windows
to allow air back into the property, at a cost to the homebuilder.
The Solution - Heat Recovery [back
to top]
 The
Villavent® Heat Recovery system is designed to completely change all the
air in the property at least once every two hours, continually replacing
the stale damp air with fresh, warmed, clean, filtered air.
The Villavent® Heat Recovery Ventilation
system recovers 60-70% of the heat normally lost through trickle vents
and other breakout points in the building structure. Systems can recover
70% (crossflow) 80% (rotary wheel) or 90% (counterflow).
By installing a Villavent® Heat Recovery
system you are providing filtered fresh air thus creating a healthier
indoor environment alleviating allergy sufferers.
Generally the Villavent® Heat Recovery
unit is of Scandinavian construction. The casing is constructed from
double skinned galvanised steel sheet with thermal insulation and is very
quiet in operation. The large cross flow heat exchanger is manufactured
from aluminium giving both higher efficiency and longevity. The British
Allergy Approved EU7 pollen bag filter and electric heater battery are
fitted as standard in our VX - E/EV range of units.
Our systems comply with the current Building Regulations 1995 Part F Section 1.9d amended 2000
and BRE Digest 398 and therefore no noisy extractor fans or draughty
trickle ventilators in windows are required.
By negating the need for trickle
ventilators in the windows noise pollution and heat loss is greatly
reduced.
How it works [back
to top]
 Villavent® offer a wide range of Heat
Recovery Ventilation units that can be sited either in the roof space;
above a Villavent® cooker-hood in the kitchen; at high level in a
cupboard or alternatively the unit can be wall mounted.
Ducting connects the stale air exhaust
grille to the Heat Recovery Unit and extracts via ducting to all the wet
areas of the property. The stale air passes through the cross-flow heat
exchanger and 65-70% of the heat normally lost via trickle vents is
recovered.
Fresh air is brought into the property
via a separate external grille, passes though the heat exchanger and
picks up the heat recovered from the stale air.
There
is no mixing of air flows - only the transfer of heat
The
warmed fresh air is then ducted to all the habitable rooms within the
property.
 Our electronic
(E) loft mounted and
wall mounted (VE) range of Heat Recovery units incorporate the most
innovative user friendly controls available on the market today. From
the Control panel you can see what is happening within the HRV unit.
Fan speed selection can be made from
minimum, normal or maximum with a unique option to select a low medium
or a high medium setting to suit individual requirements.
Supply air temperature can be adjusted
in cold external conditions to ensure supply air temperature between 15°C and
20°C. A light indicates the heater is in operation.
Service indicator is illuminated on the
controller when the filters require cleaning/replacement. This is
usually factory set to 9 months but can be adjusted to either 6 or 12
months dependent upon the likely contamination/cleanliness of the air
required.
 With the electronic controls only a low
voltage wire (supplied in 12m cable) is required and additional
controllers may be purchased for different areas of the house. The last
activated controller will be the command.
The pollen filter is approved by The British Allergy
Foundation and awarded it's Seal of Approval on products supplied with
EU7 filter.
Cookerhoods
Dependant upon the type of installation
Villavent® can offer a range of Heat Recovery Ventilation systems
suitable for use
with a cooker-hood.
Units are made to site above the cooker in the
kitchen or to be sited remotely in a roofspace. Telescopic and a choice
of stainless steel cookerhoods are available.
Optional Extras [back
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Summer
By-pass Block |
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 In
all our Heat Recovery Ventilation units the heat exchanger block
can be replaced by a summer by pass block when heat recovery is
not required. This will increase the air flow and may give a
cooling effect on hot summer days.
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Comfort
Cooling® - Villacool™ |
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 The
Villavent® Comfort Cooling unit can be fitted onto our Heat
Recovery system on installation or at a later date. (However, the
supply air ducting must be fully insulated to accommodate the
cooling unit.) Rather than being an expensive thermostatically
controlled air conditioning system the Villacool™ unit will cool
and dehumidify the supply air by 8-12ºC on outside air
temperature, resulting in a 2-3ºC temperature drop within the
room. This reduction in temperature will vary dependent on the
amount of heat gain within the building and the amount of air
provided by the ventilation system.
Click on Comfort Cooling® - Villacool™ for more information.
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The
Villavent® ELFI electrostatic filter |
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 With
ever increasing concern given to the quality of the air we
breathe, an additional filter can be supplied. The ELFI
electrostatic filter takes out 97% of airborne particles as small
as 0.1 micron i.e. pollen, bacteria, smoke, viruses, country
odours and traffic fumes, thus making it a sound investment for
those who suffer from allergies and who have young children. |
Compliance [back
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Villavent® Heat Recovery systems are
designed to completely change all the air in the property at least once
every two hours, continually replacing the stale damp air with fresh,
clean filtered air. Our systems comply with the current Building Regulations 1995 Part F Section 1.9d amended 2000
and therefore no noisy extractor
fans or draughty trickle ventilators in windows are required.
Benefits [back
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British Allergy
Approved filtered fresh air -
alleviating asthma and hayfever sufferers |
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Very quiet in
operation |
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Excellent heat
recovery and enhancement of energy efficiency |
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1 electrical
connection and low voltage control panel |
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Constant change of
air without draughts removing indoor pollution |
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No unsightly trickle
ventilators in windows |
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No noisy extractor
fans |
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No overrun timers |
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Fewer breakout points
through the building structure |
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Condensation control |
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Ventilation system is
operational as soon as power is available reducing drying times
and speeding decoration |
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Easy to install |
Help Centre [back
to top]
Click
here to view technical specifications and frequently asked questions
for this product in our help centre.
Quotation [back
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For a free no obligation quotation click
here to complete our enquiry form and E-mail
or post us with your plans, sections and elevations to sales@villavent.co.uk
(ideally in AutoCAD release 14 in a dwg format).
If you would like more information on
Villavent® products and services please call 01993 778481 or contact
us.
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