User manual REMEHA GAS 3002 ECO

[. . . ] Technical information Remeha Gas 3002 ECO Remeha Gas 3002 ECO · High efficiency condensing boiler with Low NOx emission · Range 177 - 531 kW · mbc 3. 0 Remeha Gas 3002 ECO CONTENTS Preface 1. Constructional data 2. 1 General 2. 2 Burners 3. Efficiency information 4. 1 Combustion efficiency 4. 2 Efficiency 4. 3 Standing losses 4. 4 Annual efficiency 5. Application data 5. 1 Delivery and positioning 5. 1. 1 General 5. 1. 2 Location 5. 1. 3 Support 5. 2 L. P. H. W. [. . . ] If the flow sensor signals a temperature which exceeds or threatens to exceed the preset maximum operating temperature + 5°C (see para. 7. 3. 2), the boiler is switched off (control stop). At the same time the rate of increase in the water temperature is monitored, so that the boiler is switched off in time and heat transfer is prevented. If one of the sensors still signals a water temperature higher than 110°C, the boiler will lock out. The flue gas temperature is limited by a flue gas temperature sensor (locking) with a default setting of 230°C. 7. 5. 5 Flue gas transport protection The flue gas transport is protected by a pressure differential sensor. Fig. of gas train, 11 to 19 sections Legend A Gas cock (hand-operated) MP Measuring point F Gas filter VA Safety valve DR Gas governor MB Multibloc IT Ignition transformer HB Main burner FD Flame control --Not supplied as a standard feature. 7. 4. 2 Specification Multibloc with gas/air ratio control consisting of: - Gas filter (7 and 9 sections only) - Two safety valves - Pressure regulator for gas/air ratio. 21 Remeha Gas 3002 ECO 8. ASSEMBLY GUIDELINES AND INSTALLATION INSTRUCTIONS FOR THE HEATING ENGINEER 8. 1 General The Remeha Gas 3002 ECO is delivered unassembled. The dimensions allow for transportation of all parts to the boiler room through normal access doors. The casing and equipment parts are packed. 8. 2 Water connections The water connections consist of flanges to DIN 2633, BS 4504 PN16 (DN 65 for boilers with 7 to 11 sections and DN 80 for boilers with 13 to 19 sections) and are located at the same side as the gas and air supply connections (in room sealed construction). The standard location of these connections is the top left on the boiler. If specified when ordering, it is possible to have the connections installed at the top right side. The water connections, the gas connection, the air supply connection (in room sealed form) and the control panel are always located at the same side. Just below the flange of the flow connection there is a 11/4" welding socket for fitting of a safety valve (see para. Furthermore, a pocket (Ø 15 mm) for installation of a weather compensated boiler control is located in the flow piping underneath the boiler casing. As an option, it is also possible to get the boiler delivered with separate flow and return connections (DN 65) for the second heat exchanger (ECO). 8. 3 Water pressure Each boiler section undergoes a test pressure of 12 bar. test pressure of an assembled boiler is 6 bar. The boilers are designed for operating pressures between 0. 8 bar and 6 bar. GAS SUPPLY 9. 1 General The local Gas authority should be consulted to ensure that an adequate pressure and supply is available, at the boilers maximum output. [. . . ] - Inspection for fouling of the boiler block by removing of one or two burner units (incl. If cleaning is required, all burner units must be removed. Next remove the front plate of the transition piece between the first and the second heat exchanger (see part A, fig. Having removed the supports (see part D, fig. [. . . ]