SaveVent Comfort - intelligent ventilation solutions by Systemair

2 | Disclose the secret of fresh air!

Disclose the secret of fresh air!

Since 1974 Systemair cares for the purity of an essential re-source. Today Systemair is one of the leading ventilation com-panies worldwide. A success story, which started in Skinnskat-teberg, Sweden, with the invention of the inline duct fan. This invention revolutionised the ventilation world.

2 | Disclose the secret of fresh air

Disclose the secret of fresh air! | 3

Since then, the company has been constantly developed and provides nowadays a complete product range for ventilation technology that sets standards. Whether it is a ventilation concept of a shopping mall, a controlled domestic room ventilation system of a single-family house or the ventilation of tunnels and metro stations - Systemairs’ experts know the requirements and exactly what is needed. More than 2500 employees in more than 60 subsidiaries and 40 countries provide the required customer focus.

We invite you to discover the world of ventilation technology in this brochure together with us. Our Residential Systems Team at Oxford are ready to answer all questions concerning the ventilation subject.

Disclose the secret of fresh air | 3

Contents

Discover the secret of fresh air! 2

Systemair worldwide 4

Quality of life starts with the climate 8

Creating good atmosphere is a matter of trust 10

CAD planning for Ventilation systems 12

SaveVent Comfort 14

Something you can build on 18

Supply your customers with energy from the earth 20

Make household chores fun again 21

Efficient exhaust ventilation systems 22

High efficient heat recovery systems 26

Functional Principle Heat Recovery 29

Overview Residential Ventilation Units 30

Systemair Duct Systems 32

GEO Geothermal heat exchanger unit 34

Combi Whole House „Genius“ unit 36

Systemair worldwide

Skinnskatteberg, Sweden: Systemair AB, the Systemair group head office is in Skinnskatteberg, Sweden. The production is virtually fully automated with modern machinery featuring advanced computer support. Also located here is the company's most advanced test installation for measuring technical data.

Windischbuch, Germany: Production facility for fans and modular air handling units, specialized on engineered products (e.g. tunnel and jet fans). Distribution center.

Hässleholm, Sweden: VEAB is the leading European manufacturer of elec-tric duct heaters. Production of heating and cooling coils, electric and water based.

Ukmerge, Lithuania :Production of smaller air handling units with energy recovery systems.

Maribor, Slovenia: Specialized in centrifugal smoke extract fans, EN certified.

Hasselager, Denmark: Production of modular air handling units.

Bratislava, Slovakia: The factory in Bratislava manufactures air distri-bution products and EN certified fire and smoke dampers.

4 | Systemair worldwide

Save energy, lower running cost!Our label "Green Ventilation" features products with a high energy saving potential.All products labelled with "Green Ventilation" combine energy economy with energy efficiency.

Quality:Systemair is certified in accordance with ISO 9001; ISO 14001 and ATEX. Our research and development laboratories are one of the most modern in Europe; measurements are made in accordance with interna-tional standards like AMCA and ISO.

Kuala Lumpur, Malaysia

Skinnskatteberg, Sweden Hässleholm, Sweden

Ukmerge, Lithuania

Bratislava, Slovakia Maribor, Slovenia

Windischbuch, Germany

Madrid, Spain

Hasselager, Denmark

Kansas City, USA

Dal, Eidsvoll, Norway

Bouctouche, Canada

Kuala Lumpur, Malaysia :Manufacturing of products for the Asian market.

Madrid, Spain: Production of air handling units.

Dal, Eidsvoll, Norway: Production of air handling units for the Norwegian market.

New Delhi, India: The factories in New Delhi and Noida manufacture grilles and diffusers. Systemair Software is also based here.

Bouctouche, Canada: Our main North American production facility of air handling units and inline fans for commercial and residential applications is located in Bouctouche.

Kansas City, USA: Production of fans for the US market.

Milan, Italy: Our factory in Italy, Systemair AC, develops and manufactures a wide range of chillers.

New Delhi, India

Hyderabad, India

Milano, Italy

Langenfeld, Germany

Systemair worldwide | 5

Take a deep breath and enjoy the pure, fresh air of your surroundings. With each breath, you unwind a little bit more and begin to feel fully at ease. You’ve finally arrived.

Make the dream of modern living a reality with intelligent concepts from Systemair - Villavent, increasing living quality which in turn helps to save energy and the environment

Transform your home into a day-spa of fresh filtered air.

Quality of life starts with the climate Residential ventilation by Systemair

Those wishing to build or carry out renovations today are faced with a challenge. The current building regulations demands better insulated and air-tight buildings in order to protect our resources and the environment. Air-tight well insulated buildings prevent natural ventilation through the buildings component parts, which could result in the forma-tion of mould through damp stagnant stale air, which is det-rimental to both the building structure and the health of the occupants. The solution is The SaveVent Comfort -controlled room ventilation by Systemair.

Room ventilation of the highest standardFor over 35 years now, we here at Systemair have been made energy efficient clean air a reality. Be that in large shopping centres, hospitals or simply in the confines of your home. With SaveVent Comfort, we offer you a system which lets you enjoy fresh air around the clock, without having to lift a finger. This is because the air exchange occurs automati-cally and, importantly, is regulated. Opening the windows for a quick airing-out is no longer necessary. Not only is this

8 |

very convenient, you also save both money and energy in the process. Why? Because the heating energy stays where it’s supposed to: in the house. This is especially the case with heat recovery. In this process, the waste air is extracted and used for tempering the cool fresh air, unsightly trickle ventilators, causing draughts, become a thing of the past.

One of life’s luxuriesAlong with used stale air, SaveVent Comfort also expels exces-sive air moisture. This way, you can enjoy a pleasant environ-ment without condensation and mould being eliminated. Not only does this protect the basic fabric of the building, it protects the occupants’ health as well. Just as beneficial to their well-being are our high-quality pollen and dust filters. Even people with allergies can now breathe a sigh of relief with the seal of approval from the British Allergy Foundation. This is how your controlled room ventilation works:The extract fan within the ventilation system extracts air from the wet rooms (kitchen, bathroom, WC) on an continual basis. Depending on the system, a heat exchanger extracts the heat

Principle

| 9

from waste air first. At the same time, fresh air from outside is taken in and filtered.

If necessary, the heat exchanger pre-tempers the cool outside air using the waste air. The fresh air then flows through the vents into the rooms. From there, the supply air flows to the living areas via the landing and hallway and into the kitchen bathroom and WC. This way, the two different air streams don’t mix. The result being an optimum room environment.

Principle

Creating a good atmosphere is a matter of trust SaveVent Comfort

A room’s climate is not a constant, instead it depends on a number of factors, for example, room moisture, CO2 satura-tion, the size of the room as well as the number of people in the room and how long they stay there. All these factors are taken into account with a correctly sized Systemair ventila-tion system. A system which is perfectly tailored to your clients’ needs and buildings, regardless of whether it’s a new build or renovation work. In short: a system like SaveVent Comfort.

Optimum planningIn close collaboration with you, we plan you personal room ventilation options. Based on our calculations and our decades of experience, we put together the SaveVent Comfort system components for you. Of course, we take into account the specific wishes of your clients when doing so, perhaps they want a ventilation system with geothermal heat-ex-changer for example (see p. 20). So what does it all mean? It means you can guarantee complete satisfaction at all times.

10 |

Intelligent room ventilationSensors determine the exact degree of ventilation necessary according to building usage. Subsequently, the intensity of ventilation is monitored effectively, that is, the rotation of the fan is adjusted to meet the requirements necessary at any specific time. This means that the system isn’t always running at full speed. Similarly, preheating the fresh air is only done when needed. This way, your energy costs can be considerably reduced. And since the control mechanism responds without delay, the occupants can enjoy a balanced and healthy, energy efficient indoor environment 24/7. Intelligent technology both you can trust from Systemair.

Raising quality of life –Reducing heating costs!

Modern living needs the proper living spaceventilation: SaveVent Comfort

40 %

60 %

80 %

100 %

20 %

0 %

Heating costs withSaveVent Comfort

Heating costs withconventional ventilation

Savingsx%–x%

Heating costsx–x%

100 %

Solution

Systemair runs a special design office for room ventilation systems. These planners are well-trained especially for ventilation in rooms and are able to plan and to offer the most suitable ventilation system for you.

We use the planning software Plancal:Plancal-Nova is a stand-alone drawing software for HVAC. It requires no other CAD applications and is widely used in the HVAC sector.

Plancal-Nova can import and modify drawings from other architecture or drawing software and export them again. Plans can be read and created in 2D as well as in 3D.

Visualisation methods of projects:2D for ground plans or 3D models with or without building. Unclear details can be displayed as sections or 3D details. 3D models offer different perspective views or allow to take a virtual tour through a building.

CAD planning for ventilation systems

Systemair data setSystemair has created a data set for this software with some specific features: Plancal Nova uses components of the Systemair room ventilation product range and allows calculating the planned system by using the determined air volume with regard to pressure losses of the unit up to the outlets. The determined operation point helps calculating the data of the unit, such as power consumption and sound emission. Plancal Nova can also calculate noise reduction of the duct system from the unit up to the outlets. Therefore, noise problems can be detected early and prevented during the planning phase.

After planning, a suitable bill of materials with Systemair article numbers can be generated to make a detailed offer. The CAD plans can also be used to release installation plans with specified information concerning duct installation inclusive legends and identification marking in colours. This considerably facilitates the installation. This planning documentation ensures an easy inspection because the duct installation can be quickly reproduced.

Important flow information of the system will be automatically listed on printouts.

This wide planning service is currently unique and guarantees safety from tender phase to commissioning.

12 | PlanCal Nova

SaveVent Comfort - Energy Efficient Filtered Fresh Air

Unobtrusive: fresh air around the clock 24/7

Healthy: Continuous balanced ventilation

Efficient: reduced energy consumption.

Building preservation: no condensation or mould

Hygienic: reduces pollutants.

Allergy-friendly: British Allergy Approved Filtration.

Pleasant: continuous extraction of unpleasant smells from the kitchen, toilet and all other rooms

Easy: improved building aesthetics - no trickle vents required.

Quiet: enjoy fresh air without the noise from the street coming through open windows

Perfectly in tune with your customersThe SaveVent Comfort Systems

15 |

With SaveVent Comfort, you are able to enjoy continuous fresh air in the home. Even with our basic configuration, you can enjoy the best climate conditions.

Comfort which can be improved on even further: with components which automatically manage the supply of fresh air and save on energy too. Could there be such a thing as too much convenience?

Without heat recovery

With heat recovery

SaveVent BasicEfficient exhaustventilation systemwith manual airflow control

SaveVent Basic +Efficient ventilationsystem withintelligent control

SaveVent Comfort RHighly efficient living space ventilation with rotational heat ex-changer

SaveVent Comfort CHighly efficient livingspace ventilationwith reverse flowheat exchanger

Components

In the basic model, the used indoor air is sucked out. Fresh air flows in through the external wall vents. As such, conti-nuous ventilation of the entire home is assured.

The benefits: tailored aeration and ventilation energy-saving low operating costs simple installation user-friendly quiet-running long life

Ventilating rooms is even easier with the EC vent. This intelligent control unit can regulate ventilation according to the current CO2 saturation, room tempera-ture, humidity and the number of peop-le in the room. Using these parameters it determines the necessity for ventilation and regulates the volume of air. All of it is done automatically.

The benefits: controlled aeration and ventilation as needed intelligent control energy-saving low operating costs easy installation quiet-running long life user-friendly menu navigation

day/night operation can be set using timer

Your customers want maximum conve-nience with minimum heat loss? Then recommend them our rotational heat exchanger system. This extracts the heat from the waste air and pre-tempers the cool fresh air. Some of the humidity of the air is also recovered and transferred to the supply air. High-quality fine par-ticle filters make sure the air stays pure.

The benefits: controlled aeration and ventilation heat recovery degree of up to 85% bypass function extreme energy savings

user-friendly space-saving and quiet-running allergy-friendly can be combined with fireplace

humidity recovery, thus consistently pleasant indoor climate no condensation, thus connecting to the drains not necessary frost protection not necessary (to as low as approx. -30°C)

With a reverse flow heat exchanger your customers can achieve the highest degree of heat recovery. The system automatically switches between normal mode with heat recovery and summer mode without it. In Summer a bypass function overrides the heat recovery.

The benefits: controlled aeration and ventilation heat recovery degree of up to 90% bypass function automatic de-icing function extreme energy savings quiet-running user-friendly optional fine particle filter

For whichever convenient ventilation system your customers choose and regardless of their structural circum-stances, with our ductwork systems you rise to every challenge.

Whether from galvanised steel sheeting or polymer, whether round or oval, all pipes are extremely robust, resistant to deformation and, if necessary, easy to clean.

Your clients can make the selection and choose the size to meet their individual requirements. This guarantees the safe and economical distribution of air through the building.

Do your customers prefer modern liv-ing? What about classical, maybe el-egant or perhaps they prefer the style of the country house? Regardless of which fittings your clients like, they’re bound to find the design they’re look-ing for in our versatile range of high-quality ceiling and wall vents.

Simply show your customers the models in our catalogues or refer them to our website.www.systemair.com

Systemairduct systemsMuliple options availa-ble

Systemairair distribution productsCeiling or wall mounted.

Something you can build on Your “all-round worry-free package” from Systemair

For whichever configuration level you choose, in SaveVent Comfort you are getting room ventilation of the highest qual-ity. This is because we place the greatest emphasis on qual-ity, functionality, efficiency and energy conservation when developing our products. And since we only want to offer you the absolute best, we put our innovations through their paces before they reach you. Our Research and Development Centre in Sweden is one of Europe’s most state-of-the-art test labora-tories for ventilation technology.

Expert advice from the startIt goes without saying that such a high-quality system also comes with high-quality service. As such, we make ourselves available to you with our helpful advice during the planning and tendering process. Using the building plans we determine your required air quantity. The basis for this are the current building regulations. We then plan your entire ventilation system using our experience and the latest CAD programmes. This way, you can be sure that your system and all of its com-ponents are optimally coordinated with the building. We also make it easy for you to put together an offer: This enables us to provide you with a straightforward offer for the supply of all necessary materials, installation and commissioning (as ap-propriate). This “One-Stop-Shop” enables you to have peace of mind that any grey areas that would otherwise occur between the supply, installation and commissioning are taken care of by the same organisation.. Provided the system is constructed

Service | 19

according to plan, we will of course offer a warranty for its proper functioning. We also take great care to ensure that our products are delivered quickly and are easy to assemble. This not only simplifies the work for you, it also reduces both the construction time and the costs for your clients, which they will no doubt appreciate. (should you choose to install yourselves).

If necessary, we also help you during the commissioning and adjustment of the system. We can also thereafter provide an annual service of the system. With our filter subscription, for example: You can maintain a healthy room climate and keep energy consumption down. We are happy to automatically deliver new filters for the system on a regular basis. Our all-round worry-free service makes it easy.

Since 1974, Systemair has been making clean air reality. In the mean-time, our company has established itself as one of the global market leaders in the area of ventilation technology. A success story which began in Skinnskatteberg in Sweden and continued rapidly with the invention of the duct fan. Today, we develop ventilation technology which sets new standards. Be it for major projects like shopping cen-tres, tunnels or underground train stations, or for smaller undertak-ings for room ventilation in family homes, our experts know what matters.

Systemair

If you have any difficulties starting up the system or general questions on room ventilation, give us a call! 01993 778481Our technical support hotline is available Mon-Fri from 8:30AM to 5:00 PM. Tel: 01993 772270

Supply your customers with energy from the earthWith Geo, our brine geothermal heat exchanger

Do you want to improve the level of efficiency of your ventila-tion unit? Do you want a pleasant indoor room climate for relaxing on hot summer’s days? Then why not simply use geothermal heating from Systemair. Not only is it available all the time for free, it helps you save on your energy costs too.

The temperature in the earth is practically constant through-out the year. As such, it’s suitable for preheating the cold out-side air in winter with the help of a heat exchanger. Then in summer, the warm air can be cooled down before it reaches your home’s interior. The heat exchanger’s piping needs to be buried at a depth of 1.5 to 2 meters. This is the only way to ensure that a large enough temperature gradient occurs. Since we only want to provide your customers with the best in this area too, we have developed “Geo”. With this geothermal heat exchanger,

the heat or coolness of the earth first passes into the brine (wa-ter with antifreeze agent). Only after it has arrived in the base-ment is it transferred to the supply air using a heat exchanger.

The clear advantage with GeoUnlike the air duct geothermal heat exchanger, with Geo the air is not drawn in through underground pipes. Not only is this more hygienic, it does away with the otherwise necessary regular cleaning. On top of that, Geo is better value and more robust than the air duct system. This is because the piping can have much smaller dimensions (Dia 32 instead of Dia 200). This also means that it is easier to install. Furthermore, the brine system is easier to manage. Your customers decide at what outside temperatures Geo should start up. This conserves the supply of geothermal heat and gives you exactly the room climate you want.

The forward-lookingway to use energy:Systemair “Geo”

20 | Supply your customers with energy from the earth

Make household chores fun againVillavent Central Vacuum Cleaner

You will no doubt want to keep up with the times when it comes to household chores too and ensure the greatest con-venience possible. So why not install our Villavent Central Vacuum Cleaner! With this system, all you have to do is insert a suction hose into a socket in the wall and they can get started straight away. No more pulling around a clunky machine behind you, which often likes to get caught on valu-able pieces of furniture, leaving behind ugly marks. And no more need to carry heavy items from floor to floor in order to vacuum clean. Household chores really can be this easy.

Incredible suction. Incredibly quiet.This helps your customers maintain a healthy room climate with clean air. For one, its very strong suction guarantees maximum cleaning of furniture, floor and rugs. For the oth-er, sucked in dirt is sped directly into the vacuum cleaner bag of the central device. This can be mounted in a utility room like the basement or garage. This means that the vacuum cleaner is extremely quiet and you don’t have any annoying

background noise in the rooms of your house.

Additionally, the central device blows the waste air directly to the outside. This ensures that dust doesn’t swirl up in your util-ity room - meaning that time is saved when cleaning and those with allergies don’t have to worry. Equipped with a Hepa filter, the vacuum cleaner is even suited to passive houses whose building envelope cannot be cut through by air discharge openings. The long, flexible suction hose comes equipped with a telescopic pipe and floor nozzle. This means your customers can work in ease and give their backs a break. Maintenance of the central vacuum cleaner is generally limited to regular cleaning of the suction casing and replacing the filter bags.as required.

Vacuum-cleaningtoday:Villavent centralvacuum cleaner

Central vacuum cleaner | 21

22 | Exhaust fan unit Systemair Residential Ventilation Systems

Efficient exhaust ventilation systemsfrom SystemairWithout heat recovery

SaveVent Comfort BasicEfficient exhaustventilation systemwith manual airflow control

SaveVent Comfort Basic +Efficient ventilationsystem withintelligent control

Systemairduct systemsExtremely flexible

SaveVent Comfort Basic Basic Basic+ Basic+

Application Single family house Flat Single family house Flat

System Extract only Extract only Extract only Extract only

Location Roof Space / Loft Roof Roof Space / Loft Roof

Ventilation unit Extract fan: KVKE EC, Controller EC-Vent Extract fan: TFSK Extract fan: KVKE EC;

Controller EC-SaveVentExtract fan: TFSK; Controller EC-SaveVent

Extract valvesin bathroom, toilet and kitchen; products: valves

in bathroom, toilet and kitchen; pro-ducts: valves

in bathroom, toilet and kitchen; products: valves


Intake valves Windows and FAV Windows and FAV Windows and FAV Windows and FAV

* ducting with air volume control

Overview SaveVent Comfort applications

Systemair Residential Ventilation Systems Exhaust fan unit | 23

General description

• Exhaust air units are the most cost-efficient method of mechanical ventilation.

• Exhaust air units consume less electrical power because only the fan needs energy.

• However: no heat recovery and no pre-heating of supply air !

FunctionThe used, humid and polluted room air in exhaust air rooms such as kitchens, bathrooms and toilet rooms is exhausted by a venti-lator through a duct system and led via roof or facade to the outside. Fresh air enters living rooms, children‘s rooms and bedrooms via facade inlets (valves with filter in the facade) and ensures continuous aeration of the whole apartment. The controlled room ventilation reduces ventilation heat losses compared to conventional aeration by open windows.

Systemairair distribution productsJust your style

Room Intermittent Extract Continuous ExtractMinimum Rate Minimum High Rate Minimum Low Rate

Kitchen 30l/s adjacent to hob; or 6060l/s elsewhere

13l/sTotal extract rate should be at least the whole dwelling ventilation rate given in Table 5.1b

Utility room 30l/s 8l/sBathroom 15l/s 8l/sSanitary accommodation 6l/s 6l/s

Table 5.1a Extract Ventilation rates

Table 5.1b Whole dwelling Ventilation ratesNumber of bedrooms in dwelling

1 2 3 4 5Whole dwelling ventilation rate a,b (l/s) 13 17 21 25 29

Notes:a. In addition, the minimum ventilation rate should be not less than 0.3l/s per m2 of internal floor area. (This includes all floors, e.g. for a two-storey building add the ground and first floor areas)b. This is based on two occupants in the main bedroom and a single occupant in all other bedrooms. This should be used as the default value. If a greater level of occupancy is expected add 4l/s per occupant.

Building Regulations -Part F Ventilation 2010

24 | Exhaust fan unit Systemair Residential Ventilation Systems

Exhaust air unit in a single-family house

Exhaust air unit in an apartment building, centrally

Advantages for an apartment building

• Low maintenance costs

• Less power consumption - only one fan

Disadvantages for an apartment building

• No heat recovery

• No pre-heating supply air

• Only rough filtration of the fresh air possible

• Fire safety and noise protection measures have to be respected.

Advantages for a single-family house

• Cost-efficient method

• Smaller duct system

Disadvantages for a single-family house



• High amount of maintenance (1x filter exhaust air and 1 filter for each fresh air inlet cone)


Systemair Residential Ventilation Systems Exhaust fan unit | 25

Conclusion:Exhaust air units meet the requirements according to EnEV (German Energy Savings Act) and DIN 1946-6, but cold supply air from the outside offers less comfort. In addition to this, filtering of the supply air is limited. The main advantages are cost-efficient acquisition costs and installation.

Exhaust air unit in an apartment building, decentrally

Advantages of exhaust air for each apartment

• Individually controllable

• Clear costs

• Exhaust air via facade: no noise protection and fire safety measures to the neighbour necessary

Disadvantages of exhaust air for each apartment

• Facade breakthrough in each apartment




26 | Heat Recovery unit Systemair Residential Ventilation Systems

SaveVent Comfort RLow Energy Thermal Wheel rotational heat exchanger

SaveVent Comfort CLow Energy Counterflow Heat Recovery Units

High efficiency heat recovery systems

Overview SaveVent Comfort applications

SaveVent Comfort C C R

Property Type Single family house / Single flat Muliple Dwellings Single family house / single flat

System Heat Recovery Heat Recovery Heat Recovery

Location Plant Room / Store / Cupboard Plant Room Plant Room / Store /

Cupboard

Ventilation Range SAVE VTC SAVE VTC*, Topvex SC* VR

Extract valves in bathroom, toilet and kitchen; products: valves



Supply valves In Bedrooms & living room In Bedrooms & living room In Bedrooms & living room

Systemair Residential Ventilation Systems Heat Recovery unit | 27

Systemair duct systemsMuliple options availa-ble

General description

• The unit is completely self-controlled and is easy to run by the user

• Heat recovery pre-heats supply air

• Fine filters provide clean and dust-free supply air

• A rotary heat exchanger recovers humidity during winter time

• No temperature fluctuations and cold zones in rooms - even at cold outside temperature

Systemair Air Distribution ProductsJust your style - Wall or Ceiling mounted

FunctionExhausted air from kitchens and bathrooms is ducted via the heat recovery unit to the outside. The unit draws fresh air through a sep-erate duct system. The heat of the exhaust air is transferred up to 88 % by a heat exchanger to the supply air and returned to living and bedrooms. Within the unit the air is filtered, warmed and dehumidified. Supply & Exhaust ductwork is installed to meet the require-ments and restrictions of the building.

Room Intermittent Extract Continuous ExtractMinimum Rate Minimum High Rate Minimum Low Rate

Kitchen 30l/s adjacent to hob; or 6060l/s elsewhere

13l/sTotal extract rate should be at least the whole dwelling ventilation rate given in Table 5.1b

Utility room 30l/s 8l/sBathroom 15l/s 8l/sSanitary accommodation 6l/s 6l/s

Table 5.1a Extract Ventilation rates

Table 5.1b Whole dwelling Ventilation ratesNumber of bedrooms in dwelling

1 2 3 4 5Whole dwelling ventilation rate a,b (l/s) 13 17 21 25 29

Notes:a. In addition, the minimum ventilation rate should be not less than 0.3l/s per m2 of internal floor area. (This includes all floors, e.g. for a two-storey building add the ground and first floor areas)b. This is based on two occupants in the main bedroom and a single occupant in all other bedrooms. This should be used as the default value. If a greater level of occupancy is expected add 4l/s per occupant.

Building Regulations -Part F Ventilation 2010

Advantages & Dis-advantages for different Dwelling types

Advantages for a single-family house

• High heat recovery, thermal comfort

• Less ventilation heat losses

• Humidity regain during winter time with one rotor

• Pre-heating supply air

• Higher energy saving potential

Disadvantages for a single-family house

• Complex duct system

• Higher investment costs

Advantages for an apartment building

• High energy saving potential and less heating is required

• High heat recovery

Disadvantages for an apartment building

• Complex duct system

• Higher investment costs

• Fire safety and sound protection requirements

• Central units: „Heat theft“

Conclusion:A ventilation unit with heat recovery provides a healthy, comfortable indoor enviroment with filtered supply air to the dwelling. Further-more, the energy saving potential meets the future requirements. The decision for a unit with heat recovery allows combining comfort and energy savings.Counterflow heat exchanger vs. rotary heat exchanger: a rotary heat exchanger is the best choice for single-family houses or single resi-dential units. It is more effective and creates a better indoor climate plus thers is no requirement for a condensate drain to overflow. These rotary wheel units also allow for automatic summer by-pass during warmer months. To supply more than one residential unit, a coun-terflow heat exchanger is the right choice.The required energy for frost protection reduces the efficiency of this exchanger.


Apartment building, decentrally, example for an apartment

Comparison rotating heat and plate heat exchanger

Rotary heat exchangers:


With these fans, heat as well as humidity can be exchanged. Application for single-family houses or residential units with efficiencies up to 85 %.

Heat exchangingThe wheel structure (similar to corru-

gated board) of the exchanger and continuous rotation between hot and cold air flows heats the exhaust air wheel which trans-fers this heat to the cold supply air in winter time. This effect can be used vice versa in summer time by transferring heat of the outside air to the colder exhaust air. This provides a cooling effect in summer and also leads back the cooling energy of the air conditioning.

Humidity transfer with a condensation rotorThe thermal wheel heat exchanger consists of pure aluminium which transfers humidity exactly when condensate appears on the exhaust air side and is absorbed by the outside air. High tem-perature differences can reach humidity return values up to 60 %. With our rotors, humidity is transferred when needed - in winter time. This minimizes dry air.

Counterflow heat exchangers are used to transfer heat and can reach an efficiency of more than 90 %.

Heat exchangingCounterflow heat exchangers lead air flows through parallel plates arranged in a row. On the opposite side supply and

exhaust air alternates. Warm air flow transfers energy via the plate to the cold air flow.

Humidity transfer is not possibleIn winter time, condensate has to be drained into a waste water pipe. The drain should always have either a water trap or running trap to prevent stale odours from coming back up from the drain system.

Separated Air Streams Supply and exhaust air are totally separated from each other to keep the supply air clean.

Counterflow heat exchanger

Frost protectionThe higher the efficiency of an exchanger, the more condensate drops out at high temperature differences. The efficiency also influences the temperature when frost protection is necessary for the exchanger. This concerns outside temperatures when condensate starts freezing. For high quality counter cross-flow heat exchangers with an efficiency of 90 %, this can already begin at -3 °C. In contrast, simple cross-flow heat exchangers with an efficiency of app. 55 %, this does not start until app. -14 °C. The amount of energy necessary for frost protection is correspondingly different. To ensure frost protection and to avoid pulling out energy from the exchanger, outside air can be pre-heated, the supply air can be set back or or the outside air can be bypassed at the heat exchanger via a bypass flap. The missing heat transfer by setting back the supply air fan or during bypass of the supply air has then to be replaced by the heating system.

rotation of the storage mass. Constructive modifications prevent this for units which are /DE marked (transmission 0.1 %).

Rinse chamberSome outside air flow is led on the exhaust air side to produce a rinsing effect. This reduces the transmission of exhaust air to a minimum by carryover. For correct operation of the rinse chamber, a pressure gradient of min. 200 Pa on supply and ex-haust air is necessary.

Frost protectionA condensate drain is not required in residential construction. Furthermore, the rotor does not freeze because of the trans-mission of condensate down to -30 °C by a little exhaust air surplus. A frost protection for heat exchangers is not needed.

Overview Residential Heat Recovery UnitsVR 250 ECH/B VTR 150 VTR 200B VTC Low E VR 300 ECV/B VR 400 DCV/B VR 700 DCV VR 400 DC VR 700 DC SAVE VTC 300 SAVE VTC 700

Application Available with cross flow heat exchangers - VX models

Flats / Apartments

Individual Homes

Multiple Housing / Student Accomodation

Larger Family Homes

SAP Appendix Q Approved

design until living space m² 90 100 140 100 130 220 350 220 350 300 / 250 600 / 560

max. air volume at 120 Pa m³/h 130 236 270 130 210 320 530 320 600 410 / 340 860 / 830

max. sound level at 1m distance dB(A) 47 43 41 47 46 47 51 49 55 45 53

efficiency heat recovery % 85 85 85 86 85 85 80 85 80 80 85

supply air filter - F7 G3 F7 G2 F7 F7 F7 F7 F7 G4 / F7 G4 / F7

extract air filter - G3 G3 G3 G2 G3 G3 G3 G3 G3 G4 / F7 G4 / F7

voltage/frequecy V/50Hz 230 230 230 230 230 230 230 230 230 230 230

max. power fans, each W 59 86 84 26.5 100 115 240 115 246 85 168

electr. Heater W 500 500 or 1000 500 or 1000 N/A 500 or 1000 1670 1670 1670 1670 1700 1700

fuse A 10 10 10 10 10 10 16 10 16 10 10

protection class IP 24 24 24 24 24 24 24 24 24 24 24

weight kg 38 54 46 26 41 56 73 54 65 72 150

duct connections mm 125 125 125 125 125 160 (Bypass 125) 200 160 200 160 250

width mm 1070 600 598 598 598 796 918 1040 1040 762 1170

height mm 265 774 750 579 630 800 800 576 576 802 1214

depth mm 513 467 428 280 326 406 517 410 545 616 860

Isolation of casing mm 20 30 30 10 20 30 30 30 30 30 30

condensate connection (2x) no no no 2 no no no no no no 1/2” 1/2”


VR 250 ECH/B VTR 150 VTR 200B VTC Low E VR 300 ECV/B VR 400 DCV/B VR 700 DCV VR 400 DC VR 700 DC SAVE VTC 300 SAVE VTC 700

Application Available with cross flow heat exchangers - VX models

Flats / Apartments

Individual Homes

Multiple Housing / Student Accomodation

Larger Family Homes

SAP Appendix Q Approved

design until living space m² 90 100 140 100 130 220 350 220 350 300 / 250 600 / 560

max. air volume at 120 Pa m³/h 130 236 270 130 210 320 530 320 600 410 / 340 860 / 830

max. sound level at 1m distance dB(A) 47 43 41 47 46 47 51 49 55 45 53

efficiency heat recovery % 85 85 85 86 85 85 80 85 80 80 85

supply air filter - F7 G3 F7 G2 F7 F7 F7 F7 F7 G4 / F7 G4 / F7

extract air filter - G3 G3 G3 G2 G3 G3 G3 G3 G3 G4 / F7 G4 / F7

voltage/frequecy V/50Hz 230 230 230 230 230 230 230 230 230 230 230

max. power fans, each W 59 86 84 26.5 100 115 240 115 246 85 168

electr. Heater W 500 500 or 1000 500 or 1000 N/A 500 or 1000 1670 1670 1670 1670 1700 1700

fuse A 10 10 10 10 10 10 16 10 16 10 10

protection class IP 24 24 24 24 24 24 24 24 24 24 24

weight kg 38 54 46 26 41 56 73 54 65 72 150

duct connections mm 125 125 125 125 125 160 (Bypass 125) 200 160 200 160 250

width mm 1070 600 598 598 598 796 918 1040 1040 762 1170

height mm 265 774 750 579 630 800 800 576 576 802 1214

depth mm 513 467 428 280 326 406 517 410 545 616 860

Isolation of casing mm 20 30 30 10 20 30 30 30 30 30 30

condensate connection (2x) no no no 2 no no no no no no 1/2” 1/2”


32 | Duct work & Fittings Systemair Residential Ventilation Systems

Systemair Duct SystemsVery flexible

Spiral seam pipe or plastic pipe systemSystemair offers spiral seam pipes in round and oval versions (flat duct) and Systemair-Flex+ plastic pipes. All inner sides are smooth and therefore aerodynamical and easy to clean.

Dimensioning of duct systemsThe dimensioning of the ducts for the ventilation system is made according to the requirements of the unit (calculation of the required supply air according to DIN 1946-6) and according to the situation in the building. Flow engineering and acoustic properties have first priorities.The duct installation has to be coordinated early enough with other crafts on site.

The duct size depends on the air volume. To avoid high pressure losses and unwanted noise, we recommend an air velocity of max. 3 m/s in the main duct.

When round, rectangular or oval ducts are used, the air velocity is lower at the same pressure loss in the duct.Different diameters must not be proportional installed. The pressure differences between the longest and the shortest sections have to be reduced to guarantee the previously defined air flow for all air outlets.

Round pipe (spiral seam pipe) with telescopic pipeFor duct systems with spiral seam pipes, Systemair uses folded spiral

seam pipes with a length of 1.2 m as well as telescopic pipes. The elements are equipped with rubber-lip seals. The length of the telescopic pipe can be freely adjusted. The most important advantage of this duct system is that it can be installed without cutting or trimming work. This saves installation time and makes maintenance and cleaning easier.

All joints have to be fixed by sheet metal screws and also sealed with tape.

Oval duct / flat ductFlat ducts are made of galvanized steel sheet. The elements are made of stainless steel and are connected by a plug-in system. Fixing and sealing is made by cold shrink tape.

Available sizes: System 100 (129 x 52); length 3 mSystem 151 (208 x 52); length 3 m

Systemair Flex+ - the flexible plastic pipeThe Flex+ pipe is made of physiologically and toxicologically safe PVC with no recycling materials. Thus, it is neutral in odour, free of halogens, emission-free, antistatic and antibacterial.

Easy and time saving installation by a click system. Hermetically sealed connections ensure an absolutely air tight system without further sealing work. Therefore, it works economically and hygienically because no air can leak and no other substances can enter from outside.

Deliverable sizes: DiameterDN 50, 63, 75, 90

Systemair ISO+ - a perfect combination of heat and sound insulationOuter sheath made of polyethylene with high density (HDPE); inner sheath made of polyolefin with closed cell structure. Flexible fast clamp made of EPDM. The special design of the pipes provides thermical and acoustic insulation. This pipe should be preferably used as

Systemair Residential Ventilation Systems Duct work & Fittings | 33

a connection between unit and facade (fresh and extract air) and in unheated areas.

Available nominal widths (inner diameter): DN 125 and DN 180

Pipe kit availableVentilation systems from Systemair are individually planned for each building.The air volume is calculated according to DIN 1946-6, the unit is accordingly specified and the duct system is planned inclusive silencers, insulation, outlets and mounting material. The duct system is assembled and delivered according to the material list of the planning.

GEO Geothermal heat exchanger unit

Items Art-no.GEO Unit, including G4-Filter, 312513

PE-Rohr, ND 12,5 304981

Wärmeträgerflüssigkeit bis -14 °C 304989

Why choose a ground heat exchanger?In the winter, domestic heat recovery units switch to a frost protectionmode at low temperatures outside. This usually means that the supplyfan slows down, causing an imbalance between the supply and exhaust air through the heat recovery unit. Another possibility is that a (pre-) heater is turned on, which usually consumes 1 to 2kW of energy.In the summer, at high external tempera-tures, the supply air from outside can be warmer than the air inside the house. Thus, this warm supply air can heat the house while this is not preferable.The horizontal ground heat exchanger GEO can offer a solution forthe problems mentioned above, using a minimum of energy.

34 | Geothermal heat exchanger

Example of installation GEO

Dimensions

Why choose a GEO?GEO has its own control which can be used in combination with any type of heat recovery unit. This control will start the highly energyefficient pump of the GEO at specific set outside temperatures, causing the liquid to flow through the duct. The temperature of the liquid, will approach the temperature of the soil and will transfer its energy to the supply air of the heat recovery system through the battery of the GEO.By using GEO, the efficiency of the heat recovery can be increased.

Benefits• With 8W energy, you can gain up to

1.5 kW;

• Can be used in combination with any HR-unit up to 500m³/h;

• Increases the e ciency of the heat recovery unit;

• Has its own control, allowing energy consumption only when needed;

• Has an A label-EC pump and a G4 filter for the protection of the heat exchanger;

• Is easy to install, all in 1 case (pump, control, sensors, filters, filling and venting unit, battery, gauge, vent valve, volume meter, and pressure vessel);

• Has a right / left version in 1 unit and the air to the heat recovery unit can be mounted both on the top and on the side;

• Thanks to relatively thin duct (25 mm), it is easy to install;

• Is an hygienic and attractive solution;

• Is easy to clean: condensation develops in the Aquacom, which is led to the sewer through the condensate drain.

Geothermal heat exchanger | 35

T GEO - „T in“ is constant

Q m³/h

T °C

-15

-10

-5

0

5

10

15

20

25

30

35

0 100 200 300 400 500 600

30°C in

T out summer

T out winter

-10°C in

Above is valid with a glycol/water supply temperature of 10°C.

For example: In an average house with the Heat recovery unit at speed 2 (+/- 250m³/h)in summer the GEO will cool down the outside temperature from 30°C to 20°C.In winter the GEO will heat up the outside temperature from -10°C to 2,5°C.

0102030405060708090

100

0 100 200 300 400 500 600 700

Pressure loss GEO

Q m³/h

Pa

Systemair‘s combi unit „Genius“ efficiently and economically combines the complete building equipment for energy efficient single-family houses.

Controlled room ventilation is more and more necessary for houses with modern building standards. New buildings as well as renovated buildings have higher insulation standards with less heating loads. Consequently, conventional heating systems are often over-dimensioned. Systemair‘s combi unit „Genius“ provides the solution - the ventilation system enables heating as well as cooling in an efficient way. This can be achieved by temporarily increasing the volumetric flow in combination with an air-air/air-water-heat pump. The pump also provides higher hot water comfort.Genius optimises HVAC for energy efficient buildings. Therefore, it is possible to conceive self-sufficient and CO2 neutral systems in combination with PV systems.

Controlled room ventilation with heat recovery

Controlled room ventilation with integrated heat recovery provides a balanced and agreeable indoor climate.Permanent fresh air supply into living rooms and exhaust of used air guarantee a healthy indoor climate. Heat recovery is provided by a rotating heat exchanger which transfers exhaust air heat to the supply air - the heat remains in the building.

Heating and cooling with heat pumps

Heating in winter and cooling in summer! This is made possible by a steplessly controlled air-air/air-water-heat pump.The heat pump adjusts its performance according to the requirements for a highly efficient operation.Used air is exhausted from living areas via a separate duct system and led back after treatment (heating or cooling) to living and sleeping areas. This is a pure air heating/cooling system.The exhaust system remains unaffected. Odour or substance transmission from exhausted rooms to supply air is thereby excluded.

Hot water generation

The Genius building services centre is equipped with a 150 litres drinking water reservoir. The service centre ensures hot water comfort because water treatment works during all operating modes.As a consequence, the water is heated to the required temperature parallel to heating or cooling operation.The water reservoir features an electric heating element to guarantee operation at low external temperatures.

Control unit

The control unit of the building services centre is able to control the complete heating, cooling, hot water system and ventilation.The control unit provides a user level for the owner and a service level for service personnel. The entire control unit can be controlled by an internet application.

The energy efficient Building Service CentreGenius - All in one

Genius - Building Services Centre

Combi Whole House Unit36 |

All in oneThe new „Genius“ Systemair Central Building Services Unit for energy efficient residential houses with the functions:

• Heating/Cooling/Ventilation

• Heat recovery

• Hot Water

This consists of three modules. The hot water module with stainless steel storage tank, the heat pump module with reversible air to air and air to water heatpump for heating and cooling, the ventilation and energy recovery module with energy saving fans and a rotating heat exchanger with recovery of humidity in winter and dehumidification in summer. Ventilation will be done as usual by two fans. Heating or cooling of the rooms will be provided through the supply or recirculati-on air ducts. Electrical PTC elements in the supply air elements allow independent control of individual rooms, and if necessary, balance extreme outdoor temperatures.

Compared to conventional systems, the Systemair Central Building Services Unit „Genius“ offers additional advantages, all combined in one unit:

• Ventilation with heat recovery

• Low energy use

• No extra radiators required

• Intelligent single room control

• CO2 and humidity control, optional

• Energy saving fans

• Hot water production parallel to heating operation

• Control system for the the complete building services, designed for efficient comfort operation

• Emergency mode for heating and hot water

• Legionellea function, fast charging hot water

• Geothermal heat exchanger, optional

• Ventilation unit thermally isolated

Combi Whole House Unit | 37

Ventilation module

• Rotating heat exchanger with humidity recovery.

• Heating and cooling through supply air ducts (recircu-lation air).

Central Building Services Unit „Genius“ in detail

Hot water module

• 150 litres stainless steel storage tank for hot water

• Hot water production parallel to heating function.

• Electric heater with 3 kW power

Heat pump module

• Reversible air to air and air to water heat pump for heating, cooling and hot water.

• Steplessly controlled compressor to modulate the power exactly to the need of heating and cooling energy.

Genius

Heating power kW 5

Cooling power kW 4

Air flow (normal operation) m³/h 250 (100 Pa)

Heat recovery bis 88 %

Hot water l 150

Electric heater kW 3

Dimensions

Width mm 865

Heigth mm 2070

Depth mm 750

Technical data

Easy installation and maintenance due to modular system.

HP Heat pump module

HW Hot water module

HRU Ventilation module

Installation and maintenance

ambient air

secondary air

exhaust air

supply air

exhaust air

ambient air HP

Combi Whole House Unit38 |

Index | 39

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www.systemair.co.ukwww.villavent.co.uk

SaveVent Comfort - intelligent ventilation solutions by Systemair

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