PERGE WOOD BOILERS Efficient Wood-Burning Boilers designed to burn clean and help the environment. Chaudieres Perge SA is the leading French manufacturer of wood burning boilers and has many thousands of units in  service throughout France. With huge experience of wood burning boilers and systems, the company is able to offer  technical support and system design for it’s products in order to provide reliable and practical rural heating solutions using  wood fired, biomass and conventionally fuelled heating systems. Where necessary, multiple energy sources can be  effectively and economically linked to provide the most practical and lowest cost heating.  The company aims to provide the most effective, user friendly and reliable products at highly competitive prices. A Range of Log Fired Boilers from 20-30kW. PERGE LOG BOILERS Heating only models and Heating and Domestic Hot Water Tank models Outputs from 5 to 30kW High Efficiencies (around 80%) Refractory cement combustion chamber, for a clean and high temperature combustion Steel top heat exchanger and refractory cement coated, lower heat exchanger Anti-boiling quench coil, allowing installation into a sealed (pressurised) heating system Boilers can be connected to open vented, gravity fed heating systems Minimum flue draft: 13 to 18 Pa Flue Diameter 180mm MC 5-20CI Wood Boiler  5-20kW heat output (17,000btu - 68,000btu) Overall Dimensions: 570mm wide x 870mm deep x 1055mm high Combustion Chamber Dimensions: 340mm wide x 560mm deep x 495mm high MC 5-30CIPF Wood Boiler 5-30kW heat output (17,000btu - 102,000btu) Overall Dimensions: 570mm wide x 870mm deep x 1300mm high Combustion Chamber Dimensions: 340mm wide x 560mm deep x 495mm high MC 5-30CIGF Wood Boiler 5-30kW heat output (17,000btu - 102,000btu) Overall Dimensions: 640mm wide x 907mm deep x 1400mm high Combustion Chamber Dimensions: 340mm wide x 560mm depth x 735mm high PERGE ACCUMULATOR TANKS Accumulator tanks help store more warm water, meaning less energy is required to heat up your home. Designed and manufactured to compliment biomass and solid fuel sytems, taylored  to optimise stratification and layering within the tank when used with the Perge  Optimum Charging System. Multi position tappings for Flexibility of connection to all energy types. Enabling use with gas, oil and electric heating systems. The CFC free polyurethane foam insulation and coloured exterior skin provides a high level of thermal insulation, thereby ensuring opimum eficiency. A possible maximum of four thermometer stations allows for precise monitoring of energy levels in the tank. An accumulator or buffer tank is a vessel designed to store a volume of heating water, the vessel should be well  insulated to reduce heat loss. The size of the vessel depends on the system performance required and the size of the  heating load. Typically, the ideal accumulator will be large enough to store sufficient heat to provide one full day of  heating and hot water requirements for the property being heated. The amount of heat that can be stored (measured in  kWh) by an accumulator also depends on the temperature range of the output of the accumulator. This is the difference  between the maximum temperature and the lowest usable temperature of the water at the outlet of the accumulator. A  maximum water temperature of 85 degrees is practical and a typical minimum water temperature for heating radiators  is 45 degrees C. This gives a temperature differential of 40 degrees C and this allows the maximum heat storage  capacity of a given size of accumulator to be calculated. With a temperature differential of 40 degrees C, a 1,500 litre  accumulator will store approximately 70 kWh of heat energy, enough to provide full heating and hot water requirements  for a reasonably well insulated 4 bedroom detached house.   The correct size of accumulator would need to be calculated using information including the size of the house, the  usage of the heating required and the heat loss of the house. This is similar to the process used for sizing a boiler,  however unlike a boiler, the calculation is based on the quantity of heat required over a given period rather than the  rate of producing heat in the case of a boiler only.   The benefits in using an accumulator are substantial. Because the heat is stored, the boiler can be stoked at a  convenient time, and the heating timed independently with a timer / programmer when required. For example, the  boiler can be stoked in the evening, and the heating timed to come on first thing in the morning and again late  afternoon. In winter, the boiler can then be relit in the evening to repeat the process. In Spring and Autumn, it may be  possible to reduce boiler firing to once every two days, and in Summer, for hot water only, the boiler may be fired even  less frequently. Because the boiler can be fired at maximum firing rate, the combustion temperatures are higher and the boiler works  more efficiently, with significant fuel savings (up to 50%). There is also a dramatic reduction in tar and creosote  deposits in the boiler and flue, as more of these compounds are burnt up in the combustion process.   An accumulator can be used to link up the wood fired boiler with additional back up sources of heating, and provides a  simple and more reliable means of linking up different heat sources than some other systems.   Additional heat sources can include oil, natural gas or propane boilers, or by the use of night time tariff electricity to  charge the accumulator by immersion heating elements. The accumulator provides an easy method of harnessing off  peak electricity to heat a property with conventional central heating and has the benefit of a low initial installation cost  and running costs that are lower than oil based on current energy costs (June 2008). Use of night time tariff electricity  is a cost effective and low capital cost means of providing a back up to a wood fired boiler or other renewable energy  heating system. Recently in the UK, night time tariff electricity has been an unfashionable and over looked means of  heating mainly because of the experiences of people who have previously used storage heaters, where it is difficult to  prevent heat leakage during the day and there is often insufficient heat left in the evening from the previous night time  charge. With an accumulator this is not an issue, as the insulation on the accumulator is capable of retaining the heat  from an overnight charge for several days. This hot water can then be used for central heating or hot water when  required and controlled with a conventional heating programmer.  1 SAFETY SYSTEMS Water Thermostat Anti-Boiling system, designed to prevent overheating when connected. Open / Shut loading door safety mechanism 2 MULTI ENERGY OPTIONS Factory Fitted Facility, allowing onsite or retroactive installation of: - Optional Immersion Heater (option except on MC15-40) - Universal Connection Kit 3 DURABLE LONG LIFE DESIGN AND QUALITY Upper Heat Exchanger: tried and tested technology, inovative design and robust fabrication. Lower Heat Exchanger: 100% protected by the Refractory ceramic combustion chamber, preventing corrosion. 4 AUTOMATIC OPERATION The temperature regulatormaintains the central heating water at the required temperature. The refractory ceramic and the concentric shape of the combustion chamber maintains functionality at lower heat settings. 5 ENERGY SAVING High efficiencies, even at low settings.  Fully insulated outer casting. The diagram on the right shows a typical Perge log burning boiler connected to an accumulator tank .  Indeed, because of the ingenious design of the PergeTwin heat Exchangers, the need for a thermostatically controlled loading valve is removed.  The reason for this: because the return, coolwater from the bottom of the accumulator tank is pre-heated to over 40 degrees centigrade, in the refractory ceramic coated, lower heat exchanger, this prevents the occurrence of the dew point condensation in the top heat exchanger. OPTIONAL 150 LITRE DOMESTIC HOT WATER TANK Available for the MC 5-20CI   (MC5-20CI B150) and the MC 5-30CIPF (MC 5-30CIPF B150).  Adding the water tank onto the boiler the height of the appliance increases by 560mm to an overall height of 2075mm.