Remeha Avanta Plus Quinta Pro Brochure
2015-05-27
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HIGH EFFICIENCY 110% NCV AT 40/30°C FULLY MODULATING BOILER CONTROL PREMIX BURNER CLEAN COMBUSTION ULTRA LOW NOx BREEAM EXCELLENT 100% RECYCLABLE High efficiency wall hung or free standing condensing boilers with ultra low NOx emission QUINTA PRO CASCADE & SKID MOUNTED SYSTEM OUTPUTS (2-6 BOILERS) QP30: 8.0 - 31.4 kW QP45: 8.0 - 43.0 kW QP65: 12.0 - 65.0 kW QP90: 14.1 - 89.5 kW QP115: 16.6 - 114.0 kW SEDBUK RATED (QP30, QP45, QP65) REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS The New Remeha Quinta Pro Cascade & Skid Mounted Systems Introduction General description of Cascade systems This technical information contains useful and important information for proper dimensioning of a cascade system with wall-mounted boilers. The optimum number of boilers in a Cascade In many situations it is advantageous to spread the total required heat output over several boilers. This can be made possible by means of a "cascade system". In a cascade configuration, heating boilers are connected hydraulically. If the heat demand increases or decreases, boilers are switched on or off respectively. If using a Remeha multiple boiler controller or a quality building management system. It is then important to determine the ideal number of boilers for the cascade. It describes the correct use of the complete Remeha cascade systems with the modulating wall-mounted boilers Quinta Pro 30/45/65/90/115. The following factors need to be taken into account when deciding on the number of boilers: Please contact us if you have any questions or for further information about cascade configurations. - Investment; When boilers are split up, the investment costs (boiler cost including installation, fittings, pipe work, pumps and control equipment) can work out lower or higher. However, this depends to a large extent on the situation. - Reliability; Reliability increases with the number of boilers. Research has shown that reliability is already optimum for systems with four boilers in a cascade. - Efficiency; There is no appreciable difference in terms of efficiency between several small or one or two larger boilers. - Maintenance and faults; There is a greater overall risk of faults in a system with several boilers. A larger group of engineers can service and maintain smaller boilers. - Configuration; The lightweight and compact design means that you have more flexibility when siting the boilers. Very little floor space is required and there is minimum load on the floor. Contents Introduction Cascade description 2 - Adjustment; When using several boilers and modulating control, the heat output offered is virtually equal to the heat output requested. page 2 2-4 Cascade wall mounted linear system 5 Cascade free standing linear system 6 Cascade free standing back-to-back system 7 Gas connection for air & exhaust pipes 8-9 Skid Mounted description 10 Skid linear configuration - 2 boilers 12 Skid linear configuration- 3 boilers 13 Skid back-to-back configuration - 4 boilers 14 Skid back-to-back configuration - 6 boilers 15 Flue gas table for combined flue discharge 16 Flue linear configuration 17 Flue dilution system 18 Notes 19 A number of the points mentioned are dependent on the situation and so consideration as to which solution is the best will need to be given on a project-by-project basis. The cascade kits are not supplied with the boilers they must be ordered separately. The boilers Quinta Pro 30/45/65/90/115 are particularly suitable for use in a cascade configuration. Their width of only 50 cm means that a high heat output level can be installed on a small wall. This big difference becomes apparent when comparing a Remeha cascade system with cascade systems using boilers from other manufacturers. For example, using 6 times a Quinta Pro 115, only approx. 3.8 m (including low loss header) wall width is required for 642 (80/60oC) kW. The boilers therefore allow an exceptionally compact cascade configuration. Cascade systems For installing 2 to 6 boilers, our product range includes systems that are very comprehensive and easy to install. The hydraulic and gas system can be put together entirely without welding, using screw connections, compression connections and flanges. The individual components of the cascade systems are available for independent cascade installation. Hydraulic isolation: low loss header Practical experience has shown that it is beneficial to create hydraulic isolation between the boiler circuit and the system circuit using a low loss header. This means that a widely varying volume flow on the system side hardly influences the volume flow on the boiler side at all. This also applies in reverse: a widely varying volume flow on the boiler side hardly influences the volume flow on the system side at all. Controlling several different groups hydraulically is therefore significantly easier as they do not, or barely, influence each other. This creates better overall operating conditions for the system. Output control Use the iSense Pro for up to 6 boilers or the iSense in combination with the Celcia MC4 for a maximum of 4 boilers. REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS Compact Cascade configurations 3 Advantages at a glance Quinta Pro boiler • High efficiency: 110% NCV at 40/30ºC (99% GCV) • Boiler control: a) Modulating (18-100%) b) On/off Remeha Cascade systems In order to make it as simple as possible to create a cascade configuration, our product range has included complete cascade systems for years. The compact design of the boilers, combined with the smart gas and water connection technology of the cascade system, makes it possible to install a high heat output in a small area. For example, using six Quinta Pro 115 boilers, only 3.8 m approx. (including low loss header) wall width is required for 642 kW (80/60ºC). The cascade systems can be divided into 3 main groups: • Premix burner for clean combustion - 2 to 6 boilers in a linear configuration, wall mounted. • Low NOx < 39mg/kWh - 2 to 6 boilers in a linear configuration, mounted on a freestanding frame. • Quiet operation < 52 dBA • LED illuminated air box • Digital display • Data file for storing information • Remote signalling options - 3 to 6 boilers in a back-to-back configuration, mounted on a freestanding frame. Please contact us for different configurations (specials). We also provide in-depth advice on the choice of flue gas discharge material and control engineering, including for non-standard configurations. • Cast aluminium heat exchanger • Easy maintenance • Built-in calorifier control • Options for modular control and/or weather compensator • Control 0-10V signal or volt free • PC connection • Advanced boiler control, for reliable heat delivery • Conventional or “room-sealed” operation • Cascade packages for up to 6 boilers • Quick and easy installation • Space saving • For use with natural gas and L.P.G. (Some models require a conversion kit) • Suitable for pressurised flue systems Structure of cascade systems The return, flow, and gas connections of the individual boilers are connected using the fittings supplied by means of horizontal connections to main pipes for return, flow and gas. These pipes are welded onto a frame that rests on the floor and is fixed to the wall or to a free-standing frame. The low loss header supplied has flange connections, which can be fitted to the left or right of the cascade main pipe as required. The blind flanges supplied are then fitted on the other side. The gas main pipe has a flange to which the optional gas filter can also be connected on the left or right as required. The blind flange supplied is then fitted on the other side. When a gas filter is used, a pressure loss of 3 mbar over the gas filter must be taken into account. The minimum inlet working gas pressure after the gas filter is 17 mbar. A common PVC condensed water discharge pipe (not supplied) can be installed in the frame. For this purpose, holes have been made in the frame into which this pipe can be fitted (to the left or right as required) sloping downwards. Any combination of boilers is possible. See the table for the corresponding heat outputs. Useful output (kW) Quinta Pro 30 Quinta Pro 45 Quinta Pro 65 Quinta Pro 90 Quinta Pro 115 4 50/30°C 31.4 43.0 65.0 89.5 114.0 80/60°C 29.3 40.0 61.0 84.2 107.0 The cascade systems can be divided into 3 main groups: - 2 to 6 boilers in a linear configuration, wall mounted. - 2 to 6 boilers in a linear configuration, mounted on a free-standing frame. - 3 to 6 boilers in a back-to-back configuration, mounted on a freestanding frame. The boiler side of the cascade systems is sized to 20ΔT. The low loss header is based on 20 / 11ΔT. Wall-mounted linear configuration (LW) 2 to 6 boilers 231 284 500 500 530 3150 30 500 OV A B OV X Y 1590 1590 System flow; connection Dn 100 or 125/DIN 2631 (8 holes) System return; connection Dn 100 or 125/DIN 2631 (8 holes) Gas supply connection Dn 50 or 65/DIN 2633 (4 holes) Air inlet / Flue gas discharge concentric connection Quinta Pro 30/45 = 80 / 125 mm, Quinta Pro 65/90/115 = 100 / 150 mm Suspension points Low loss header (Dn65 = 633 mm; Dn100 = 643mm) Distance to system return connection = 200 mm Distance to system flow connection = 560 mm 1476 1306 B 270 X Y A 1576 100 REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS Installation drawings for Cascade systems Dimensions (mm) No. of boilers 2 3 4 5 6 Width (mm) 1030 1560 2090 2620 3150 5 Free-standing linear configuration (LV) 2 to 6 boilers 231 284 500 500 530 3150 555 100 1306 500 B 270 X Y A OV A B OV X Y 1590 1590 System flow; connection Dn 100 or 125/DIN 2631 (8 holes) System return; connection Dn 100 or 125/DIN 2631 (8 holes) Gas supply connection Dn 50 or 65/DIN 2633 (4 holes) Air inlet / Flue gas discharge concentric connection Quinta Pro 30/45 = 80 / 125 mm, Quinta Pro 65/90/115 = 100 / 150 mm Suspension points Low loss header (Dn65 = 633 mm; Dn100 = 643 mm) Distance to system return connection = 200 mm Distance to system flow connection = 560 mm Dimensions (mm) 6 No. of boilers 2 3 4 5 6 Width (mm) 1030 1560 2090 2620 3150 1576 30 530 1560 1055 100 500 1306 30 B 270 X Y A 1576 284 500 500 231 OV A B OV X Y 1590 System flow; connection Dn 100 or 125/DIN 2631 (8 holes) System return; connection Dn 100 or 125/DIN 2631 (8 holes) Gas supply connection Dn 50 or 65/DIN 2633 (4 holes) Air inlet / Flue gas discharge concentric connection Quinta Pro 30/45 = 80 / 125 mm, Quinta Pro 65/90/115 = 100 / 150 mm Suspension points Low loss header (Dn65 = 633 mm; Dn100 = 643 mm) Distance to system return connection = 200 mm Distance to system flow connection = 560 mm Dimensions (mm) No. of boilers 2 3 4 5 6 Width (mm) 1030 1560 2090 2620 3150 REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS Back-to-back configuration (RG) 3 to 6 boilers 7 Gas Connection General The boilers are suitable for use with natural gas and propane category II2H3P. Connect the boilers to the gas mains in accordance with the applicable regulations. For the Quinta Pro boilers, the gas connections are at the bottom of the boiler and are 3/4” male thread. There must be a main gas cock close to the boilers. A gas filter for the gas supply pipe is available as an accessory. Connections for the air and exhaust pipes General The boilers can be used in room-ventilated or room-sealed operation. The room-open version extracts the necessary combustion air from its environment. In this case via an air supply opening at the top of the boilers. By installing an air supply pipe on the air supply opening, you obtain a roomsealed system. Individual flue gas discharge Gas Pressures The required inlet working pressure per boiler is 17 to 30 mbar. The correct burner pressure setting for natural gas was set at the factory and, in principle, does not need re-adjusting. For propane operation, see the installation service manual for the boilers concerned. The usual inlet pressure for commercial propane (37-50 mbar) can be used. If there is insufficient height for a joint flue gas discharge and/or air supply, individual roof feed-throughs must be installed at the same height on flat or sloping roofs. This avoids flue gases from one boiler being taken in by another boiler. From an aesthetic point of view, the individual roof feed-throughs can be placed within a single feed-through construction. Recirculation problems may arise where discharge takes place into recessed and in the vicinity or rising walls. If in doubt, please contact us. Joint flue gas discharge If there is sufficient height, a collector system can be used (not supplied by us). In the design of the collector system, a distinction is made between a series or parallel configuration. This document only covers the series configuration. In series configuration, individual boilers are connected directly to a horizontal collector, which then continues on to the vertical section. An advantage of this configuration is that only one (room-ventilated operation) or two (roomsealed operation) collector pipes run immediately above the boilers. It is also possible to link serveral boilers under overpressure on the flue gas side: This results in smaller diameters of the flue gas discharge pipe. For this purpose, the Quinta Pro boilers have a flue gas non-return valve as standard. This creates a considerable saving on the cost of a combined flue-gas-discharge system with several boilers switched in a cascade. The boiler’s parameter settings will need to be changed. Consult our Technical department about this. 8 When combining different metals, these must be galvanically isolated. Galvanic isolation (rubber inlay) is also required when using brackets made from a different metal. Fit the flue gas discharge pipe so that it has airtight and watertight joints and connections. Flue gas discharge material Because the flue gases condense, the flue gas discharge must not be connected to a brick duct. In situations of this kind, always use a lining tube. Depending on the design, the following materials may be used: Material A rigid wall (1) Flexible (1) Thick aluminium wall Stainless steel Synthetic material T120 Stainless steel Synthetic material T120 Approval according to EN-1856-1 Approval according to EN-1856-1 Approval according o Gastec QA or KOMO Approval according to EN-1856-1 Approval according to Gastec QA or KOMO (1) The sealing must conform with pressure class 1 External components must always be insulated. Air inlet equipment Depending on the design, the following materials may be used: Material A rigid wall Flexible Aluminium/Stainless Steel/Synthetic material If condensate forming on the air supply collector is problematic, it must be insulated so that it is watertight. Condensate drain Because the flue gases condense in the discharge system, condensed water develops and must be discharged. As a rule of thumb, we anticipate a maximum of 1 litre of condensed water per m3 of natural gas consumed. In practice, this amounts to: • Approx. 5 litre of condensate per hour for the Quinta Pro 45 • Approx. 7.5 litre of condensate per hour for the Quinta Pro 65 • Approx. 10 litre of condensate per hour for the Quinta Pro 90 • Approx. 12.5 litre of condensate per hour for the Quinta Pro 115 In addition to the condensate drain on each individual boiler, in the case of a joint flue gas discharge, an additional condensate collector must be placed at the bottom of the vertical duct. When using different materials, the condensed water must be discharged separately for each section in a single type of material. Discharge the condensed water directly into the drain using a syphon. Make an open connection with the drain. Condensed water must not be discharged into gutters: This prevents freezing and corrosion of the materials normally used for gutters. Horizontal sections in the flue gas discharge must slope down (5cm/m) towards the boilers. Fit the individual boilers to the joint flue gas discharge so that no condensate can flow back into the boilers. REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS Material requirements 9 Advantages at a glance General description of Skid Mounted systems Quinta Pro boiler (Pre-assembled) • High efficiency: 110% NCV at 40/30ºC (99% GCV) The Skid Mounted package is a complete pre-assembled unit and can be supplied in the following configuration: Back-to-back or in line configuration (same price for either). • Boiler control: a) Modulating (18-100%) b) On/off • Premix burner for clean combustion • Low NOx < 39mg/kWh Boilers c/w individual shunt pumps. Boxed steel tube frame (powder coated) complete with lifting eyes. • Quiet operation < 48 dBA Wheeled frame for ease of movement within the plant room. • Digital display Fully adjustable legs for levelling after final positioning. • Data file for storing information All associated pipe work and fittings, safety valves etc (Safety valves set at 3bar unless stated otherwise). • Remote signalling options • Cast aluminium heat exchanger • Easy maintenance • Built-in calorifier control Boiler Skids designed to suit either 20 degrees or 11 delta T. Flow and return connections to the system, BSP Thread or Flanged PN16 (left hand connections standard - right handed on request). • Options for modular control and/or weather compensator Gas connection Flanged PN16. • Control 0-10V signal or volt free Midi-pressurisation unit c/w expansion vessel (supplied loose). • PC connection • Advanced boiler control, Remeha’s ‘abc’, for reliable heat delivery • Conventional or “room-sealed” operation • Cascade packages for up to 6 boilers • Quick and easy installation • Space saving • For use with natural gas and L.P.G. (Some models require a conversion kit) 10 Maximum frame depth 650mm to allow access through a normal door (in line boilers only). Condensate Terrain pipe work. Lockable isolating switch for the power supply to each boiler. 6ltr Dosing pot. Control panel with run and fail indicators for all boilers and pressurisation unit. Volt free contacts for BMS interface within control panel. Gas valve safety interlock via volt free contacts within control panel. Automatic heating system pressure set c/w with high and low pressure switches. Supplied with a loose pressure vessel, sized to suit the kW rating of boilers at 5M static head and 3 bar operating pressure unless advised otherwise. Combined nominal output (kW) at 81/70°C No. of boilers Quinta 45 Quinta 65 Quinta 90 Quinta 115 2 80 122 168 214 3 120 183 252 321 4 160 244 336 428 5 200 305 420 535 6 240 366 504 642 Note: Larger configurations available on request, please contact our technical help desk for further information. REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS Description of pressurisation units used on the Skid Mounted Boilers 11 Skid Mounted linear configuration - 2 boilers Note: Frame manufactured from fully welded Epoxy Powder Coated 40mmSQ. Box Section. Frame complete with Adjustable Feet for levelling requirement. All Flanges are PN16. Dimensions (mm) Config. 2xQ45 2xQ65 2xQ90 2xQ115 12 A 65 dia 65 dia 65 dia 80 dia B 50 dia 50 dia 50 dia 50 dia C 225 225 225 225 D 90 90 90 90 E 500 500 500 650 F 150 dia 150 dia 150 dia 200 dia G 320 320 320 350 H 1720 1720 1720 1750 J 260 260 260 200 Note: Frame manufactured from fully welded Epoxy Powder Coated 40mmSQ. Box Section. Frame complete with Adjustable Feet for levelling requirement. All Flanges are PN16. Dimensions (mm) Config. 3xQ45 3xQ65 3xQ90 3xQ115 A 65 dia 65 dia 100 dia 100 dia B 50 dia 50 dia 65 dia 65 dia C 225 225 230 230 D 90 90 100 100 E 500 500 650 650 F 150 dia 150 dia 200 dia 200 dia G 320 320 350 350 H 2280 2280 2310 2310 J 260 260 200 200 REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS Skid Mounted linear configuration - 3 boilers 13 Skid Mounted back-to-back configuration - 4 boilers Note: Frame manufactured from fully welded Epoxy Powder Coated 40mmSQ. Box Section. Frame complete with Adjustable Feet for levelling requirement. All Flanges are PN16. Dimensions (mm) Config. 4xQ45 4xQ65 4xQ90 4xQ115 14 A 80 dia 80 dia 100 dia 125 dia B 50 dia 65 dia 65 dia 80 dia C 225 230 235 235 D 90 90 90 90 E 650 650 650 800 F 200 dia 200 dia 200 dia 250 dia G 350 350 350 375 H 1750 1750 1750 1750 J 630 630 630 630 Note: Frame manufactured from fully welded Epoxy Powder Coated 40mmSQ. Box Section. Frame complete with Adjustable Feet for levelling requirement. All Flanges are PN16. Dimensions (mm) Config. 6xQ45 6xQ65 6xQ90 6xQ115 A 80 dia 80 dia 125 dia 125 dia B 65 dia 65 dia 80 dia 80 dia C 230 230 235 235 D 90 90 90 90 E 650 650 800 800 F 200 dia 200 dia 250 dia 250 dia G 350 350 375 375 H 2310 2310 2335 2335 J 630 630 630 630 REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS Skid Mounted back-to-back configuration - 6 boilers 15 Flue gas table for combined flue discharge Dimensioning flue gas discharge linear configuration The following table is for dimensioning Cascade systems in a series configuration with the most frequently occurring combinations. The table runs from two to six units (in a linear or back-to-back configuration). For unit combinations not described here or a configuration that differs from the drawings, please consult our Sales Support department. When compiling the tables, we assumed that the units would be switched on and off one by one and that there would be no elbows in the horizontal and vertical collector pipes. Discharge system diameters: linear configuration, series connection, room ventilated operation Heat output P Boiler types kW 80 120 160 200 240 122 183 244 305 366 168 252 336 420 504 214 321 428 535 642 2xQ45 3xQ45 4xQ45 5xQ45 6xQ45 2xQ65 3xQ65 4xQ65 5xQ65 6xQ65 2xQ90 3xQ90 4xQ90 5xQ90 6xQ90 2xQ115 3xQ115 4xQ115 5xQ115 6xQ115 Ød=ØD(mm) H=2-5m 130 180 220 255 280 155 220 265 305 340 175 250 305 350 390 200 285 345 395 440 H=5-9m 125 170 205 230 255 145 200 240 275 300 165 225 270 310 345 185 255 305 345 385 H=9-13m 125 165 195 220 240 145 195 230 255 280 160 215 255 290 320 180 240 285 323 355 Note: Connect the boilers to the horizontal header using swept connections. 16 H=13-17m 130 165 195 215 235 145 190 225 250 275 160 215 250 280 310 180 235 275 315 345 (For conventional or open flue systems). Typical multi boiler installation with the flue combined into a single header and riser. Flue gas discharge Quinta Pro 30/45: 80mm Ø Quinta Pro 65/90/115: 100mm Ø Note 1: Using 90° boiler connections into the header may result in larger headers and risers being required. Other multi boiler flue combinations for the Quinta Pro 65, 90 and 115 may be available to suit different site conditions — for further information please consult your Area Sales Manager — contact details can be found on our web site www.remeha.co.uk Note 2: Other flue configurations are possible, please contact our technical help desk for further information. REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS Linear configuration: series connection, room ventilated operation 17 Quinta Pro 30, 45, 65, 90 and 115 - Multi or single boiler installation on a flue dilution system Note: Remeha is unable to offer a flue dilution system and recommends that the installer contacts a flue specialist to design and manufacture the system in accordance with the requirements of the British Standards and to comply with the guidelines illustrated above. Typical multi boiler installation for a flue dilution flue system showing the flue break necessary for all pre-mix boilers to prevent the dilution fan affecting the gas/air ratio control system in the boiler. 18 REMEHA QUINTA PRO CASCADE & SKID MOUNTED SYSTEMS Notes: 19 TreadLightly Remeha Commercial Head Office Remeha House Molly Millars Lane Wokingham Berkshire RG41 2QP T: 0118 978 3434 F: 0118 978 6977 E: boilers@remeha.com www.remeha.co.uk The data published in this technical sales leaflet is based on the latest information (at date of publication) and may be subject to revisions. It should be read in conjunction with our full technical brochure (available on request). We reserve the right to continuous development in both design and manufacture, therefore any changes to the technology employed may not be retrospective, nor may we be obliged to adjust earlier supplies accordingly. Issue 1 date: Jan 2011 Remeha is committed to carbon offsetting Designed and produced by Sans Frontiere Marketing Communications – 01273 487 800 – www.sansfrontiere.co.uk ON THE PLANET
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