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De Caaien - duurzaam en energiezuinig gebouwd UK
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76 luxurious single-family houses
…sustainable and
energy-efficient…
Air conditioning system
Comfortable and sustainable
Your new rented house has been provided with
a state-of-the-art and sustainable air conditioning
system offering fl oor heating, fl oor cooling and
ventilation. This will allow you to enjoy maximum
living comfort and help you contribute unnoticed
to a cleaner environment.
This brochure covers all the information about
the heat and cold storage system.
ContentsIntroduction page 2
Floor heating and cooling system page 3
Ventilation system page 3
What does all this mean for you? page 4
Floor fi nish page 4
The thermostat page 6
How does it work … the technology page 6
Introduction
The air conditioning system in a nutshellFirst of all, the houses in your new residential district,
De Caaien, are excellently insulated. They have been
provided with a ground based ‘heat and cold’ storage
system. The heat which the houses absorb in the summer
is stored to heat them in the winter which means
less energy is required to enjoy a pleasant temperature
throughout the year. Normally a hot period in the summer
means high temperatures inside the house. But, as all
rooms are kept cool, a pleasant climate is also guaranteed
in the summer.
Your house has also been equipped with an advanced
automatic ventilation system called ‘Demand Flow’ which
constantly ventilates all rooms while the room you are
actually in is automatically ventilated slightly more
than others.
There is no gas connection to the new residential district
De Caaien which means the houses are better prepared for
a sustainable future. With this brochure we would like to
introduce you to the new world of air conditioning.
This way of living provides special comfort and character.
T E C H N O L O G YThe air conditioning system’s heat pump passes air
through the cold ‘underground’ in winter to cool it and
provide a pleasant climate in the summertime. In winter
the reverse happens. Partly because the ground is
used as a sustainable source of energy, the houses in
De Caaien project discharge less CO2 than other new
houses. The project is thus much more ‘sustainable’
and environmentally responsible.
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Properly insulated houses must be provided with
a sophisticated ventilation system. If nobody is at home
during the day, the ventilation system will automatically
select the lowest setting. Once you come home the
ventilation system of your living room will be up and
running. At bedtime the system will select the lowest
setting ventilating only the bedrooms that are being used.
The bathroom will be automatically ventilated for relative
humidity. Everything is fully automated. Fresh air is
supplied in the traditional way via the ventilation grilles in
the external wall. Obviously you will have every freedom
to open the windows in summer and winter. The system
will then recognise the existing ventilation.
There is one exception to manually increasing the level
of comfort. When you are cooking meals you can turn
the ventilation switch to the ‘cooking position’ and back
to ‘automatic’ once cooking is fi nished. In this way your
kitchen will be better ventilated. The cooker head in the
kitchen is a so-called HR cooker hood providing an
‘air curtain’ around the hob. In this way most cooking
steam remains above the hob with the cooking hood
extracting most cooking smells.
T E C H N O L O G YThanks to a new ventilation system all rooms will
automatically be optimally ventilated based on the
measured CO2 concentrations. The CO2 concentration
in a certain room properly indicates that there are people
present in a room and accordingly indicates the level of
air ‘pollution’.
Thanks to the water pipes installed underneath the fl oor
your home has been provided with the most comfortable
and effi cient heating and cooling system. The colder the
weather outside, the warmer the water inside the pipes.
This partly depends on your thermostat setting.
T E C H N O L O G YThe rooms have been provided with water pipes under
the fl oor around which water is pumped. The air
conditioning system automatically adjusts the water
temperature to the outside temperature and the
temperature shown on your room thermostat.
WintertimeDuring the winter the fl oor heating water will have
a maximum temperature of 40°C. This is not the case with
the radiators which might reach 90°C. This means the
winter temperature will be 20°C. The temperature in the
bathroom will be 22°C due to additional heating of
an electrical towel radiator.
SummertimeDuring the summer 18°C water will be pumped below
the fl oors. The cool water will withdraw heat from the
house. The inside temperature, depending on the outside
temperature, will usually fl uctuate between 20°C and 25°C.
This means the house will continue to offer a pleasant
inside temperature throughout the summer.
T E C H N O L O G YThe house will be no more than 5 degrees cooler
compared to a similar home that has not been provided
with this system. The air conditioning system will
automatically regulate the water temperature so there will
be no condensation. The cooling system requires much
less energy than an air conditioning system.
Hot tap waterIn addition, the system also provides hot tap water.
Depending on your thermostat setting, water will be
heated and stored in the boiler either constantly or
alternatively during the night because of the less
expensive off-peak electricity rate. The boiler is
stationed in the technical room.
Floor heating and cooling system
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Ventilation system
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Advantages for man and the environment Floor heating has a number of major advantages:
Occupiers can truly use the entire space of the house,
because not a single room has been provided with
wall or fl oor radiators. This means the house can be
furnished in a more fl exible way.
The entire house has a constant temperature at all
times, because the inside air is slowly heated with the
fl oor heating system at a relatively low temperature.
Also, the fl oor will always be a pleasant touch to
your feet.
Because of the low temperature and the large heating
surface there are hardly any air currents in the house.
The lack of noticeable air currents or draughts means
more comfort. Less air movement also means less
moving dust, which is especially good for people who
suffer from asthma.
The temperature set is maintained both in the winter
(heating) and in the summer (cooling). If the summer
is extremely hot, the temperature inside the house will
automatically drop 5 degrees compared to the
outside temperature.
Automatic ventilation has two major advantages:
The ventilation level can be adjusted according to your
wishes. Mechanical ventilation is responsible for
a signifi cant percentage of house energy consumption.
Proper ventilation is essential but ventilating the house
when it is empty means unnecessary loss of energy.
Compared to a standard ventilation system, this system
can save 50% of ventilation loss, which corresponds to
some 20% of your energy bill.
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Unlike the traditional mechanical ventilation system
this CO2-controlled system will look after itself.
The ventilation position will automatically be
determined which is not the case with manually
operated traditional systems. The cooking procedure
is an exception though.
OperationBecause the fl oor heating system uses relatively low
temperatures, the desired changes in temperature are
slowly reached. Therefore we strongly recommend
keeping the thermostat at the same temperature day and
night. You will no longer need to turn down the thermostat
when it is bedtime.
Saving energyChanging the temperature frequently means using more
energy. Changes in temperature also take a long time.
Even if you are leaving on a summer holiday, we advise
you to leave the thermostat in the normal position.
We explain the different bearings on the thermostat later.
In any case make sure the temperature is at least 18°C,
because it will take quite a long time to reach the desired
temperature once your house has cooled off. This
will mean using more energy and experiencing less
comfort. So, even if you are spending a long time outside
your house in the wintertime, make sure the in-house
temperature is at least 18°C.
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Floor fi nishFloor fi nish
What does all this mean for you?
Floor coveringYour house is heated and cooled via the fl oor. The fl oor
covering must suffi ciently allow heat to transfer to the
rooms. Many fl oor coverings lend themselves perfectly
to this purpose. Because the fl oor heating pipes are just
below the surface, fl oor covering may not be nailed to the
fl oor. Gluing the fl oor covering ensures the best results.
The fl oors have been provided with an anhydrite-bound
screed which is rubbed down prior to delivery to allow
the glue to attach properly. We recommend discussing
the right type of glue with the supplier.
Make sure to emphasise in advance that you will be using
an anhydrite-bound screed that has been provided with
a fl oor heating system. The supplier should then decide
on the right type of glue and the handling procedure.
Also, bear in mind that you will have to remove the fl oor
once you decide to move house. Many fl oor coverings
can be glued using a so-called fi xing glue and are easier
to remove.
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Low maintenanceThe air conditioning system hardly requires maintenance. All you need to do is to check occasionally, as is the case
with a central heating system that uses radiators, the water level. The water pump will tell you the pressure on the
pressure gauge. In case of low pressure the fl oor heating water can easily be added using the water pump.
It is important to clean the ventilation grilles on a regular basis. The outside of the ventilation grille is best cleaned
while cleaning the windows. The inside of the ventilation grille must be dusted and cleaned once every year.
You may remove the inside hood to easily remove the dirt using a vacuum cleaner and a wet cloth. The mechanical
ventilation unit will regularly (once every three to four years) be cleaned in accordance with the property manager’s
maintenance contract.
TYPE FLOOR FINISH SUITABLE IN YOUR HOUSE
Wood, parquet Most parquets are suitable. Soft wood parquet such as beech wood, pine and birch do not lend themselves for fl oor heating applications. Long board parquet too is unsuitable.
Linoleum, marmoleum Applicable at all times.
Linoleum, laminate Always applicable, provided it is glued (thus not fl oating).
Carpet, carpet tiles Most carpets are applicable. Foam back carpet or deep-pile carpet are unsuitable. Never use underlay.
Natural stone, tiles, decorative gravel Applicable but not allowed in rented houses.
Cork Not applicable
These types of fl oor covering must be discussed in advanceThe above mentioned fl oor coverings insuffi ciently
transfer fl oor heat to the room; they insulate too well.
Floor carpet suppliers frequently state insulation values on
their documents. If the insulation value (Rc) is less than
0.1 (m2.K)/W the fl oor covering will defi nitely be suitable.
So we advise you to make crystal-clear agreements with
your supplier. If a parquet fl oor or a laminated fl oor must
be applied to an underlay, the insulation value of the
parquet fl oor plus the insulation value of the underlay
must be less than 0.1 (m2.K)/W. If you have doubts consult
the property manager before buying the fl oor covering.
Discuss matters in case of architectural adjustmentsThe houses are entirely fl oor heated. So it is important to
keep the fl oor free as much as possible to allow transfer
of heat to the room. If, for instance, a water bed or a large
bath is installed, a smaller fl oor area will be available to
transfer the heat. In some cases the room concerned will
not be able to reach the desired temperature. Always
discuss this with the property manager in case you are
planning architectural adjustments or if you wish to
change something in your house as a result of which
less fl oor area will be able to transfer heat.
NB: Discuss how to handle your fl oor with your supplier and the property manager with regard to
removal of fl oor covering on leaving the house.
Which fl oor fi nish is unsuitable for fl oor heating?Soft word parquet such as beech wood, pine and birch.
Long board parquet, due to risk of deformation.
All fl oating fl oor fi nishes, loose or on a foam interlayer.*
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Foam backed carpet or deep pile carpet, because
of high insulation.
Underlay.
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* For these fl oors specifi c underlays are suitable.
Contact your supplier for options!
Ground collectorsThe total system consists of ground collectors and the air
conditioning system in the house itself. For each house
in De Caaien district, hoses have been installed in the
soil reaching 90 to 130 metres in depth. Through these
hoses, which are referred to as ground collectors, water is
pumped around in a closed system. The average ground
temperature during the summer is 12°C.
The water pumped around takes on the temperature of the
ground. In the winter months the water absorbs heat from
the ground to transfer this heat back during the summer.
In the winter the water pump increases the base
temperature to between 25°C and 40°C, depending on the
outside temperature. In the summer the water pump uses
the water with an average temperature of 12°C to cool
the house.
How does it work… the technology
The air conditioning system consists of a number of parts:
Ground collectors;
Heat pump for room heating and hot tap water;
Boiler for hot tap water storage;
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Heat pump for window heating and hot tap waterEach house has been provided with a heat pump that
serves its purpose quietly and unnoticed. In your new
house the heat pump has been installed in a special
room on the ground fl oor near the front door. The
house is constantly kept at a good temperature and with
suffi cient hot tap water, as would have been the case
with a traditional central heating boiler. A central heating
boiler also uses gas and a little electricity. A heat pump
is similar to a refrigerator which uses a compressor to
remain cool. In other words, heat is withdrawn from the
refrigerator and transferred through its back. The heat
pump withdraws heat from the ground water and transfers
it to the fl oor heating water which is then brought to the
right temperature. This heat is also used to heat the tap
water inside the boiler.
The tap water reaches 62°C every day, which means it is
suffi ciently hot to prevent Legionella growth. As is the case
with ‘normal heating systems’ we strongly recommend,
in case of long absence (over one week), to let the hot and
cold water gently run for a minute or so.
If hot boiler water is used, the heat pump will refi ll the
boiler during the night using less expensive off-peak night
electricity. Also, you may ask the property manager or
the installer to install the heat pump to heat the boiler not
only during the night but also at various times during the
day (for instance at 16.00 every day). Special tap water
requirements (e.g. you want a dump shower) are best
discussed with the property manager.
heat pump boiler
Floor heat distributor;
Thermostat for setting the desired temperature.
There is also the previously mentioned ventilation system.
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The thermostatThe thermostat in the living room allows you to adjust the
temperature for the entire house. The fl oor heating system
has basically been set to always keep the bathroom 1 to
2°C warmer than the other rooms. There is no need to
set a clock or apply temperature reduction at night as
a heat pump in a properly insulated house will be most
economical if it is constantly kept low. When it comes
to adjusting your air conditioning system we suggest
you discuss preferences with the property manager.
Thermostat settingsThe thermostat in the living room has different settings.
At a normal setting the system will provide a pleasant,
constant temperature. Set the temperature using the rotary
knob. The cooling and heating system runs automatically.
If the thermostat is constantly kept at this normal
level with a set temperature, energy consumption will
be modest.
If you require extra hot tap water, you can turn the
thermostat to ‘boost’. This means additional tap water
in stock will be heated during the day. Obviously this
involves higher electricity costs.
You may also choose to intensify the cooling system.
This hardly requires any extra electricity. If the outside
temperature remains below -10°C for a longer period of
time, you may use the thermostat to arrange for more
electrical heating. Since this is hardly the case in the
Netherlands, electricity costs for this option are restricted.
Heat and hot tap water are guaranteedEven in the event of disruptions the heat pump will
always ensure you have suffi cient heat and hot tap water.
To this purpose the heat pump has been provided with
an electrical element which can take over heat supply in
case of emergencies. A service engineer can switch on this
electrical element remotely. The system is thus checked
and protected by remote control which means disruptions
are usually solved very quickly.
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Disclaimer: While this brochure has been prepared with the greatest care information provided is subject to express approval and no rights may be derived from it © 2009, Amvest
Boiler for suffi cient hot tap waterEvery house has been provided with a boiler in which
hot water is stored for daily use. The boiler is in the same
room as the heat pump. The heat pump ensures the water
inside the 150 litre boiler is heated up. A 150 litre boiler
provides suffi cient shower or bath water for a family
of four. With the thermostat you may always choose to
heat up the water more frequently if you do not have
suffi cient hot water, although this means additional costs
considering the higher daytime rate electricity. Because
hot tap water remains stored, it is always available in no
time at the right temperature. In the kitchen you can count
on hot 50°C tap water within 30 seconds.
Floor heat distributorEach house has been provided with one or two so-called
‘distributors’ to properly distribute heat to the various
rooms. These distributors have been set to ensure every
room in the house is pleasantly warm. The property
manager can adjust the distributor settings to make the
rooms warmer or colder.
thermostat
distributor
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Javastraat 1a2585 AA Den HaagTel. 070 342 01 01www.frisiamakelaars.nl
Frits Diepenlaan 572497 DN Den HaagTel. 070 336 70 55www.hof-rijnland.nl
For more information:
www.hurenindecaaien.nl