Frequently Asked Questions

Transcription

1 1 Frequently Asked Questions The Future of Heating is Clear

2 2 Contents Select the section you wish to view Product Summary - Pages Designs. 2. Fixing types. 3. Material Options. 4. Features. 5. Why use the Glass Radiator Company? Benefits & Attributes - Pages Low Installation Costs. 2. No Maintenance Costs. 3. Easy to Relocate. 4. Low Purchase Price. 5. Combinable with Renewable Energy Sources. 6. Optimal Energy Use. 7. No Fuel Storage. 8. Wear Parts. 9. Can I get an electric shock if the glass breaks? 10. Is the glass resistant against breakage? 11. Is the radiator available in thinner thicknesses? 12. Will there be other screen print designs? 13. What certificates were done for the glass radiator? 14. How long is the warrantee period for the glass radiator? 15. How do I recycle the product? a. Recycling Policy and the WEEE Regulations. b. If the Glass Radiator Company Supplies the End User. c. If we supply Distributers and Resellers. d. Importing Electrical Goods onto the UK Market. Principles of Operation - Pages What is the exact principle of operation? How is the heat generated? 2. What is thermal or infrared radiation? 3. What is convection? 4. Does the radiator create any electromagnetic pollution? 5. Is the radiator difficult to operate? 6. Does the radiator automatically shut off when it reaches the desired temperature? 7. What happens in case the radiator is covered during the operation? 8. Up to what distance does the remote control thermostat operate? 9. Do I have to use more than one remote control for several rooms? 10. Does the glass radiator system work better than underfloor heating? a. Levels of Comfort. b. Dead Plants. c. Sweating of Existing Furniture d. Construction and Operation. e. Quotes from Installers. f. Links to Discussion Sites Listing Problems. g. Diagram.

3 3 Contents Select the section you wish to view Installation - Pages Is it difficult to install the glass radiator? 2. Can I install the radiator next to a shower, is it resistant to humidity? 3. Location of the Cable to the Glass Radiator. 4. Wall Mounting Kit Dimension. 5. Towel Rail Dimensions. 6. Can the towel rail also be installed if the radiator is mounted horizontally? Energy & Efficiency - Pages Current Required for each Radiator 2. What is the electrical power consumption on the highest output level in continuous operation? 3. What are the running costs and SAP rating implications? a. Running Costs. b. Electric Heating Environmentally Clean. c. Cost of Electricity. d. Running Costs. e. SAP Ratings f. CO2 Carbon Footprint and Trees. 4. Kilowatts and BTU Conversion. 5. How many m2 can be heated with one radiator? 6. What is the ratio of radiation to convection of the glass radiator? 7. What is the efficiency of the glass radiator? 8. What is the maximum surface temperature at maximum output?

4 4 Product Summary Complete thermostatically controlled electrical heating systems for houses, apartments and offices, for single rooms or multiple. Offering a design statement and feature that augments the saleable value of the property. 1. Designs: Diamant Mirastar 2. Fixings Types: On-wall Towel Rail Cylindrical Feet Base Plate 3. Material Options: Chrome Stainless Steel

5 5 Product Summary 4. Features Clear glass no wires or moving parts. Relocatable, not part of a complete heating system. Ideal for style, or where you have problems fitting conventional radiators. Completely new to the UK. Slim-line control box, very small. Just plug into existing electrical socket. Floor mounted or wall mounted. Controllable or non-controllable. Contemporary design. Supplied with 2m of cable. The non-controllable radiators are set to a temperature at the factory and are either on or off and run at 65 C which is the same as a normal household radiator. The controllable radiators work off a temperature controller which would be situated in a room and the temperature required for the room would be set on the controller. The controller can control up to 50 radiators in one area up to around 20 metres away. 5. Why use the Glass Radiator Company; Dedicated staff to answer queries. Technical assistance on larger schemes. Able to recommend receive drawings, and offer advice. Best prices, willing to deal. Registered Producer Scheme for Recycling (Link: Recycling). Plant a tree for every radiator sold (Link: Recycling). Donation to charity.

6 6 Benefits & Attributes 1. Low Installation Costs. The installation costs of the SGG Thermovit Elegance glass radiator system are extremely low compared to conventional heating systems. The costs are merely your own, since you do not need a professional to install it for you. 2. No Maintenance Costs. SGG Thermovit Elegance glass radiators incur no maintenance costs whatsoever, unlike many other gas or oil-based heating systems. The glass radiator itself has no working parts of any kind, which normally would need servicing with time. 3. Easy to Relocate. You can take your complete SGG Thermovit Elegance heating system with you when you move house. The ideal room heating system can move with you, without any additional costs. 4. Low Purchase Price. The purchase price of the SGG Thermovit Elegance heating system is low compared to conventional gas or oil-based central heating systems. 5. Combinable with Renewable Energy Sources. (Link: Running Costs & SAP Ratings). Renewable energy sources, such as photovoltaics or wind power, combined with the ideal efficiency of SGG Thermovit Elegance glass radiators, make it an environmentally friendly alternative to existing heating systems. You ll also benefit from lower energy consumption costs. 6. Optimal Energy Use. Thanks to the remote control system of SGG Thermovit Elegance glass radiators, you do not waste any energy unnecessarily. The radiator uses the exact amount of energy required to reach the desired room temperature. Four different heating programs ensure that the system is only running when you need it, thus saving a lot of energy. 7. No Fuel Storage. With SGG Thermovit Elegance, there s no need to store fuel, such as oil or wood, at your own inconvenience and risk (average oil tank manufacturer guarantee: two years). 8. Are there any wear parts on the SGG Thermovit Elegance glass radiator? No. There are no wear parts on the radiator whatsoever. 9. Can I get an electric shock if the glass breaks? No. The glass panes are held together through the PVB foil between the panes even if the glass breaks. Furthermore the breakage cuts off the conductive layer on the glass and thereby the electric circuit. 10. Is the glass resistant against breakage? The radiator is made of laminated safety glass (similar to a car windscreen) and therefore remains intact even if the glass should be broken. The tempered glass panes withstand even the hardest hits. The SGG Thermovit Elegance glass radiator was tested for possible breakage by an independent institute in cooperation with the technical university of Aachen (RWTH). A pendulum test according to DIN EN up to a pendulum height of 700mm was successfully carried out without any breakage. 11. Is the SGG Thermovit Elegance available in smaller thicknesses? For safety reasons the SGG Thermovit Elegance is produced in 2 x 6mm semi-tempered glass. Lower thicknesses are possible but only for bigger quantities. They are not part of the standard product range.

7 7 Benefits & Attributes 12. Will there be other screen print designs? The introduction of new designs is planned for the beginning of Personalised designs for customers are possible for bigger quantities (depending on design, size and quantity). The manufacturer can provide more detailed information on demand. 13. Which certifications were done for the glass radiator? The SGG Thermovit Elegance glass radiator has been tested: CE electrical test. Impact resistant certificate. IP46 splash test certificate. In addition, the manufacturer provides the CE declaration of conformity stating that the SGG Thermovit Elegance glass radiator meets all necessary European standards. 14. How long is the warranty period for the glass radiator? The warranty lasts for a period of two years after the day of purchase. Detailed information is given on the last page of the installation manual. 15. How do I recycle the product? a). Recycling Policy and the WEEE Regulations. Under the new Waste Electrical and Electronic Equipment regulations that have been implemented by law in the UK in July The Glass Radiator Company has legal obligations to do the following: b). If We Supply the End User. Providing that the end user purchases a replacement product from us at the end of the life of the product on a like for like basis, the Glass Radiator Company will collect the product when the new one is delivered with no collection cost to the end customer, and will return the product to be recycled. d). If We Supply Distributors and Resellers and Not Direct to the End User. The resellers and distributors have their own responsibilities under the regulations and the Glass Radiator Company is not obligated to take any product back on their behalf. d). As an Importer of Electrical Goods Putting the Goods onto the UK Market. The Glass Radiator Company is registered with a Producer Scheme where we have to notify the Environment Agency the amount of electrical goods we put onto the UK market and we are charged a fee accordingly. This fee is used to invest in recycling plants and techniques to deal with electrical goods coming to the end of their life.

8 8 Principles of Operation 1. What is the exact principle of operation? How is the heat generated? The heat is created with an electric conductive layer on the front glass within the electrical resistance that the electricity has to work against. Composition PVB - Interlayer Glass (Uncoated) A voltage of 220 / 230V is put directly onto the coating. The electric current flows through the electro conductive coating of the glass pane. Infrared radiation (similar to sunlight) 220 / 230V Glass (Uncoated) Metallic Coating Laminated Glass Due to the electric resistance of the coating the surface temperature of the glass increases.infrared radiation is thereby created, which transfers the heating energy into the room. 2. What is thermal or infrared radiation? Infrared radiation, also known as thermal radiation, is a kind of energy transportation through electromagnetic waves. Infrared radiation heats up the objects and are hit independently of the ambient air. The best example for this principle is of the infrared radiation of the sun. Which, similar to the glass radiator, is absorbed by all objects, leading to their warming. Normal Radiator Convection Heating Large difference in temperature between floor to ceiling Glass Radiator Radiation Heating Consistent temperature from floor to ceiling Thermal/Infrared Radiation

9 9 Principles of Operation 3. What is convection? Convection, in this context describes, the heating up of the ambient air for example using a heater. The warm air ascends because of its tower density and thereby pushes the cooler air towards the ground. The cooler air is then heated up by the heater and ascends, creating a circulation of air. The circulation of air disperses dust and creates a 'cold-feetaffect' as the cooler air is always pushed towards the bottom of a room. 4. Does the radiator create any electromagnet pollution? The magnetic field created by the radiator is less than the field created by a normal electric light bulb. 5. Is it difficult to operate the SGG Thermovit Elegance glass radiator? No. With every SGG Thermovit Elegance glass radiator comes a multilingual operating manual which is a step-by-step guide to the control programming. 6. Does the radiator automatically shut off when it reaches the desired temperature? The SGG Thermovit Elegance glass radiator is controlled in connection with the remote control thermostat. The thermostat measures the actual room temperature and compares it with the desired temperature that has been programmed in. The smaller the difference between desired and actual temperature, the smaller is the power output of the radiator. When the room temperature reaches the desired temperature the output level is set to zero. 7. What happens in case the radiator is covered during operation? Beneath the covered part, the heat accumulates leading to a local temperature peak. For these cases there are two security measures installed in the control box on the reverse side of the radiator. A temperature sensor measures the surface temperature of the glass and an electronic switch shuts off the radiator as soon as the surface temperature rises above 65 C. In the unlikely event that this measure fails, a bimetal spring cuts off the electric circuit as soon as 105 C is reached. NB The manufacturer points out that the radiator shall not be covered at any time. For towel drying please use the towel rail, available in all sizes, developed especially for the SGG Thermovit Elegance glass radiator. 8. Up to what distance does the remote control thermostat operate? The remote control thermostat of the SGG Thermovit Elegance glass radiator has an average range of 20m. In case the radiators are located in different rooms it has to be checked if the range is sufficient for the room configuration. 9. Do I have to use a separate remote control thermostat for different rooms? Every remote control thermostat can control an unlimited number of radiators. Every thermostat has a unique identification number which is saved in the radiator control prior to commissioning (see instruction manual. The remote control thermostat is also fitted with radio noise suppression to eliminate interferences with other appliances. Each control signal can be explicitly identified and allocated. It is therefore possible to establish groups that can, for example, be used in a single room or, in case of different heat requirements, in different rooms. It is necessary to obtain a separate thermostat for each of these rooms. 10. Does the glass radiator system work better than underfloor heating? Our product although functional and can provide a complete thermostatically controlled electrical heating system, the product presents a design statement and talking point when installed. The glass panel becomes part of the interior design of the space. If Under Floor Heating is installed you cannot see it and cannot talk about it and does not become part of the design of the space. Although there are several reasons for not having Under Floor Heating (UFH) there are a couple of main problems: (Continued)

10 10 Principles of Operation 10. Does the glass radiator system work better than underfloor heating? (continued) a) Levels of Comfort. With any type of under floor heating there is a significant variation in temperature at floor level (25'- 27') to the temperature at head height (19'-20') and the heating relies on the movement of air. Our product does not rely on air movement as the heat is radiant (like the suns rays) and directly heats objects, there is little variation in temperature between the floor and ceiling (1'-2') Please refer to attached diagram. The heat output is not efficient as the heat has to go through whatever flooring is in place. The amount of heat emitted for solid floor is 100 watts per m² and for a timber floor 70 watts per m². Electrical UFH systems are typically 80 watts per m² at 24 volts or 110 watts per m² at 28 volts. Our glass radiators produce 1000 watts per m2 and 100% electrical energy is converted to 100% heat energy without any losses. Under floor heating systems can take 24 hours to heat up from cold. The extended time to heat up a room from cold means that this system is not very good for occasional use. It also is not very good in responding to rapid temperature change. Under floor heating takes the heated water 20 minutes to travel through the network of the pipe and then returns to be reheated. So the water is only being reheated 3 times an HOUR. This means that individual rooms on a pipe run may not have warmth consistently and the temperature would cycle until the water is replaced with hot water. As there is quite a considerable length of pipe work and hence water, the pumping system and boiler can be very noisy and space needs to be made available to install it. With our glass radiators all you need to supply is hot water. The result of needing a large boiler with lots of water being pumped around the system leads to noise, and this can be particularly bad when the system needs bleeding of air like a normal central heating system. Baby's skin is very sensitive, much more so than adults and their feet are particularly soft, under floor heating is not good for babies especially when they are crawling as they are so close to the ground. The heat at this level is heated air and is very suffocating. Our radiant heat producing glass radiators heat objects (like the suns rays) and produce an even heat from floor to ceiling throughout the space. b) Dead Plants!! We have found several comments in various discussion forums that people have installed under floor heating and have had problems with plants that sit on the floor drying out really quickly due to the heat generated on the floor. Although obvious, it has lead to end users of the systems being disappointed. By not having large plants it has an effect on the design of the space as large plants can have a large visual impact on any living space. c) Sweating of Existing Furniture Under floor heating should not be fitted under floor mounted furniture units in kitchens, bedrooms living rooms due to sweating. It is quite easy to arrange in a kitchen where the position of base units etc are fixed, however it is not realistic to restrict the UFH in other rooms where the position of cupboards etc are not fixed and may be changed. UFH beneath cupboards can cause the inside to 'sweat' and the effect of the heat may be detrimental to individual pieces of furniture. Most modern furniture is made of a chipboard laminate and not solid wood which exacerbates the problem. d) Construction and Operation Requires major building installation work and also time to install which is usually an issue on construction projects. There are many parts to assemble and it does rely on all of the parts being delivered correctly on time by the supplier, and that the installation crew also arrive when the kits arrive. There is no point installing the under floor heating without insulating below the floor as the heating will not work properly. This is most important with solid wood flooring. Without the insulation, the heat would simply be wasted warming the damp earth beneath the house, breaking out the concrete, and encouraging bacteria to grow. Installing the insulation often accounts for the major part of the expense. Careful consideration needs to be taken to the type of finished floor covering that will be used, see points on the next page;

11 11 Principles of Operation d) Construction and Operation (continued) If you are installing a wooden floor it must be kiln dried before installing to minimise warping of the floor. Installing under floor heating below a timber floor just isn't efficient. Everyone knows wood is an insulator. It would be like having a wooden radiator cover with no holes in them. Any floor material must be checked first if they can withstand the elevated temperatures produced at floor level. Some modern floors require to be stuck down (such as Scala wood effect flooring which is like Amtico), and the adhesive needs to withstand elevated temperatures. If floor tiles are laid and the floor temperature gets up to 30 degrees plus, there is a risk that if you spill cold water, say in a kitchen onto the floor, then the tiles will crack. The actual water travels through the pipes at between 40 to 45 degrees and if the floor has ceramic tiles and is really cold perhaps if it is in winter and the floor has a concrete base then it could be sub-zero, then there is further risk of cracking the floor and tiles. The flow rate of Under Floor Heating Systems is around 1.5 litres per minute, so in the case of leaks, cracks or breakages that can represent a large amount of water. There is generally a high installation cost and once installed cannot be taken out easily for whatever reason. Our glass radiators can be simply unplugged from the wall and moved into a new position, or taken with the customer should the customer move to a new house. Water based under floor heating systems have running and maintenance costs which are not always made obvious to the end user. The systems need to be bled like a radiator with a vent key to get the air out. Under floor heating systems must be flushed out by a PROFESSIONAL regularly to release trapped air. This is a process where all the water must be flushed out of the pipes under the floor and refilled with fresh water. Flushing the trapped air out of the under floor heating system needs to be done every 2 years as the system will deteriorate if not flushed. This is time wasting and costly. The running costs are high as most under floor heating companies recommend that you have your system on 24 hours a day everyday due to the fact if you switch the system on it takes long periods of time it takes hours even days to heat up the room to desired temperature. Our Thermostatically controlled version switches on and off when required once the required temperature for the room is set. The temperature is even, not subject to draughts as it does not rely on convection and does not have hot floors, and does not have energy losses due to the heat exchange method (gas burnt to generate heat water heated carried through pipes heat carried through floor), all of the different materials and distances have heat loss and energy loss. Our radiators have 100% energy in 100% out with no transference losses. The energy used can be from renewable energy such as Wind solar etc, where with gas or oil once it has been used it is gone. e) Quote from an Under Floor Heating Installer: Whilst researching on the internet we found this statement from a contractor who installs under floor heating. A lot of people are confused whether to chose under floor heating of a radiator system for their home. This is due to the fact that under floor heating is expensive to operate and takes long periods of time to heat up and cool down. Having installed several under floor heating systems where constantly complaining of high operating costs, floors getting very warm and uncomfortable to their feet, rooms not reaching required temperature settings, cracked floor tiles, wooden floors moving and warping, taking several hours or even days before the system is near balanced, delay in the cool down process of the floor, it became quite obvious to me that under floor heating does not operate according to plan. The problems need improving to reduce running costs. I find the main problem to be are and high temperatures. I know that these problems have to be addresses before under floor heating can operate efficiently! f) Links to other sites listing problems and discussion forums; /01/ixpmain12.html

12 12 Principles of Operation g) Diagram - Underfloor Heating compared to Glass Radiator Heating Underfloor Heating Convection Heating Large difference in temperature between floor to ceiling Glass Radiator Radiation Heating Consistent temperature from floor to ceiling Underfloor/Glass Radiator Heating

13 13 Installation 1. Is it difficult to install the SGG Thermovit Elegance Glass Radiator? No. With every SGG Thermovit Elegance Glass Radiator comes a multilingual installation manual showing a photo of each step of the installation procedure. Therefore everyone can easily install the radiator either on the wall or on the ground. 2. Can I install the SGG Thermovit Elegance Glass Radiator next to a shower (splash water) and is the radiator resistant to humidity? The SGG Thermovit Elegance glass radiator was checked by the TUV Saarland for its splash water resistance. It is protected against splash water (IP46), which means that it is not affected by regular splash water or humidity in the bathroom NB: Electric appliances generally have to be installed at a minimum distance of 0.6m to the adjacent water supply. 3. Location of the Electric Cable to the Glass Radiator. The control box on the rear of the radiator harbours the microprocessor as well as the transmitter for the communication between processor and thermostat. The attached power cord has a standardised length of 2m. In the remote control version (including microprocessor and transmitter) the depth of the control box is 24.5mm. In the standard version (without microprocessor and transmitter) the depth is only 11mm. 4. Wall Mounting Kit Dimensions. The overall depth from the wall to the front face of the radiator is 65mm with the wall mounting post projecting a further 10mm beyond the face of the glass. 5. Towel Rail Dimensions. The overall depth of the fitting from the wall to the outside edge of the towel rail is approx 120mm. 6. Can the towel rail also be installed if the radiator is mounted horizontally? All sizes for horizontal or vertical mounting are available for the towel rail (except 1500mm). Diamant Radiator installed next to a shower unit The power cord entry point.

14 14 Energy & Efficiency 1. Current required for each radiator The radiator has been designed to work at 220/230 volts a/c at 50 hertz Current required is: 230 V Model 06/04 = 1.05 A 230 V Model 10/05 = 2.17 A 230 V Model 12/06 = 3.13 A 230 V Model 15/07 = 4.56 A It is not recommended to run other voltages and currents through the radiator and it will invalidate any guarantee. 2. What is the electric power consumption on the highest output level in continuous operation? When in continuous operation for one hour, the electric energy consumption on the highest output level is: Size 600 x 400mm 1000 x 500mm 1200 x 600mm 1500 x 700mm Max Power 240W 500W 720W 900W Energy Consumption 0.24kWh 0.50kWh 0.72kWh 0.90kWhh h 3. What are the running costs and SAP rating implications? a) Running Costs and SAP Ratings. We have been recently been asked some questions about running costs. This is very difficult to determine for a few reasons but it is mainly dependant on the thermal efficiency of the space being heated. An apartment with two outside walls in an apartment block is going to be more costly to heat than the same design of apartment built by the same builder but positioned in the centre of the block with only one outside wall. 5 A newer house built in Spain with very good insulation in the roof and walls, (and floor), with upvc windows, would keep the heat in much better than an older property without cavity walls, sash windows, high ceilings and based in the very North of Scotland. The remote control thermostat version of our glass radiator switches the radiator on and off when required. If you therefore have a really well insulated room, then the radiator is only going to be on a small part of the time. If the room has computers, bright lights or lots of people then this increases the heat generated in the room and so the radiator again would not be on very often. Once up to temperature it would switch on for a bit, then switch off, then switch on, as required. The other dependant factor is the amount you pay for electricity. This varies throughout the country. It may also be that the design of the house includes solar panels for water heating or photovoltaic cells or even wind turbines which are now available at B+Q for home based local electricity generation. b) Electric Heating In the UK oil and gas fired central heating have traditionally been the systems of choice. Their control, low cost and convenience have been difficult to beat, until recently. Electric heating is now a realistic option because the price of electricity has fallen and heating technology has improved. In the UK as in the rest of Europe electric radiant heat systems are growing in use. Electricity is now acknowledged as environmentally clean, increasingly from renewable sources, efficient to use, very controllable and extremely versatile. c) Cost of Electricity UK Electricity prices, for the 40 per cent of domestic customers, who switched supplier, have fallen by up to 17 % since mid 1998 (National Audit Office).

15 15 Energy & Efficiency c) Cost of Electricity (continued) Cheaper electricity and efficient radiant heat means electricity compares favourably with other heating methods; this makes it a low cost heating option for every day, all-day use. d) Running Costs These will depend on how much you pay for energy. The running costs can start at as little at 2p per hour, a lot cheaper than other electric heaters. (Southern Electric prices August 07). Glass radiators are also 100% efficient, so all that energy you are paying for gets turned into heat! Assuming that heating is not on all day everyday, you can make some remarkable savings compared with some competitors heating systems. Running the heater on a thermostatically controlled timer, you can program it to monitor the room and maintain the temperature. Say the heater was on for 2 hours at maximum and another 2 hours at 50%, this would add up to a few pence a day and less than 5 per month. For our larger heaters the costs will can be worked out from the maximum power output, which can be found later on. The cost of this is very subjective, it depend son the time of year, the volume of the room, how many windows it has, how much insulation the walls, ceiling and roof has, whether the windows are double glazed, whether blinds or curtains are fitted, whether they are open or closed. But our calculations can be used as an example for comparison. e) SAP Ratings The SAP ratings calculated for new buildings do not have the flexibility to allow for electrical supplies to be provided by renewable energy, the numbers used are general as it assumes that the electricity supplied comes from gas or coal power stations that generate the electricity. There is currently no provision for using renewables. The SAP ratings assume 100% efficiency for all types of electric heating but the control method can have an influence on the SAP CO2 emissions, some may be less efficient than ours. It is possible however to improve on the SAP ratings if electrical heating systems are chosen by using Building Research Establishment SAP Appendix Q approved extract ventilation and whole house ventilation systems with heat recovery. Combined with electrical heating systems this will often get the project into the SAP threshold figures required on new building and achieve the Dwelling Emission Rate (DER) required. In order to accurately determine SAP figures then please contact Mike Martin from Wessex Energy Services. f) CO2, Carbon Footprint and Trees! We are assuming that our product runs of renewable energy produced via solar, wind, water or other methods which do not produce CO2. At this moment in time (27th July 2007) we have tried to determine the CO2 produced in the production process but this has been very difficult to determine. We are sure that in time figures will become available. What we have decided to do is to plant a tree for every radiator sold to an end user. We are still working on finding a suitable partner in this plan and will introduce it as soon as we can. 4. Kilowatts and BTU Conversion to Compare Outputs to Conventional Radiators and Requirements for Room Sizes. Conversion is not an exact science as there are many factors involved, such as the amount of shade that any room gets and which way it is facing. However, it is possible to approximate using the following calculations: Calculate the volume of the room in cubic feet by multiplying the room's height, width and length. For bedrooms, kitchens and hallways multiply the volume by 4 For bathrooms, living and dining rooms, multiply the volume by 5. If the room has large windows or exposed walls, increase the total by 10% (Continued)

16 16 Energy & Efficiency 4. Kilowatts and BTU Conversion to Compare Outputs to Conventional Radiators and Requirements for Room Sizes. (continued) FOR EXAMPLE: A kitchen 12 ft long by 4 ft wide and 8 ft high has a volume of 1536 BTUs To calculate the watts, multiply the total by which in this case equals 450 watts. 5. How many m2 of office/living space can be heated with one SGG Thermovit Elegance glass radiator? The maximum area that can be heated is dependent on the location of the building and the quality of the insulation in windows and walls. Assuming a rough estimate of 50W/m2, each radiator can heat up the following area: Model 06/04 (600 x 400mm) 240W - 4 m2 Model 10/05 (1000 x 500mm) 500W - 8 m2 Model 12/06 (1200 x 600mm) 720W - 12 m2 Model 15/07 (1500 x 700mm) 900W - 17 m2 NB The figures indicated are only guideline values. Please contact a specialised engineer for an exact analysis of your heat requirement. 6. What is the ratio of radiation to convection of the SGG Thermovit Elegance glass radiator? The SGG Thermovit Elegance glass radiator operated with 60% to 70% infrared radiation and 40% to 30% convection. Normal hot water heaters operate vice versa. 7. What efficiency does the SGG Thermovit Elegance radiator have? The SGG Thermovit Elegance glass radiator has an efficiency of 100%. Since all losses of electrical energy are automatically converted into heat all 100% of the electrical energy put into the radiator is used to heat up your room. 8. What is the maximum surface temperature at maximum output? The maximum output surface temperature is at around 65 C on average, assuming 220V input voltage. When using a higher voltage the maximum surface temperature rises respectively. In case the radiator is partly covered, for example by a towel, the temperature also rises. NB Do not cover the radiator directly at any time. A temperature sensor in the control box on the reverse side of the radiator measures the glass surface temperature. If the surface temperature reaches 65 C it is electronically shut off and in the unlikely event that it reaches 105 C it is mechanically shut off. After 20 min of heating: SGG Thermovit Elegance (Diamant 10/05): After 30 min of heating: SGG Thermovit Elegance (Diamant 10/05): After 60 min of heating: SGG Thermovit Elegance (Diamant 10/05):