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Radiating combustionDetail of cross section of burnerFully premixThe “Modulating Fan” of each moduleplays a fundamental role. The manometrichead of the fan is directly programmedand controlled by the electronics of thepanel board (MBD), and will be higheror lower according to the temperaturedifference between the temperaturerequested by the C.H. system, the one setand the one measured. The main functionof the fan is to blow in air and gas andmix them in a special chamber; the mixtureis then pushed through the burner surface(metal sponge) where diffused radiatingcombustion occurs.All this ensures constant efficiency at anyoutput. At the same time CO and NOxemissions are reduced thanks to the limited“air excess” needed by these burners andthanks to the low combustion temperature.Radiating combustionThe most efficient way to transmit heatenergy, similar to that of the sun, is byemitting electromagnetic radiation.This combustion system is activated bythe incandescence of the “Metal Sponge”(on the burner head) whose wide surfaceguarantees both, low combustiontemperature and reduced turbulence, withthe following advantages:• greater transmission of energy, comparedwith a traditional burner at the sameflame temperature;• turbulence-free for total safety;• limited production of pollutants, due tototal oxidation of natural gas molecules;• low thermal and mechanical stressesfor durability, due to physicalimmutability of metal sponge;• silent combustion, due to lowmanometric head of premix modulatingfan, that is able to develop a soft flame;• easy maintenance, due to reducednumber of components and easy accessto them.Cast aluminum section for range 360 - 630
Modular Boiler DriveMathematicalintelligenceThe running and operation of theMODULEX boiler are determined by amicroprocessor printed circuit board,known as MBD (Modular Boiler Drive)which receives information from theoutside, processes and sends it to theburner of each individual module,according to the following settingsestablished during the design phase:• output is distributed evenly over thegreatest number of modules at theminimum load possible to ensuremaximum efficiency;• working hours are evenly distributed toeach module, to optimise performanceand aging.The information received by the MDBcan be sent by:• NTC flow and return global temperaturesensors• NTC local temperature sensors• Local safety thermostats• D.H.W. NTC temperature sensor orON/OFF thermostat• On/Off thermostats controlling cascadeoperation of several Modulex• Outer compensator with 0-10 Volt signal.<strong>Heating</strong>In C.H. mode MODULEX has twoNTC sensors that monitor the temperature.These are placed on the flowand return manifolds.These sensors, on the base of theinformation supplied by the control devicesand the maximum temperature set-pointadjusted on the panel board, will modulateoutput and temperature of the water inthe primary circuit according to theprogram set on the panel board and canalso feed the loading pump (not provided)of an external D.H.W. tank.AM4 moduls for sanitary water priorityand thermoregulation managementModulating gas valve groupsDomestic hot waterMODULEX has an electronic PCB typeAM-4 which uses a priority NTC sensoror D.H.W. thermostat (both optional) tocontrol a D.H.W. tank, if present, andfeeds the MBD with the informationneeded to control the loading pump orthe three-way diverting valve directly.The AM-4 also programs the operationof the modules used in D.H.W. productionin the same way as the C.H. mode.The maximum output available forD.H.W. production purposes issettable and supplied by 1 up to 4modules.AM5 Extension modulsMBD Microprocessor electronic cardDetail of inside of panel board, where MBD(Modular Boiler Drive) os housed
Page 4 and 5: Pre-assembledmodules systemSide vie
Page 8 and 9: Installations without limitsModulex
Page 10 and 11: 5 671 2 34S T EPS T O REM OD E5 671

Heating

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