Logano plus SB315, SB615, SB745 - Buderus

Burner44.2.5 Gas connection and specificationAll Logatop VM premix gas burners are prepared formodulating operation with natural gas E and LL. Inaddition, type Logatop VM2.0/3.0 burners can also beoperated with LPG.All burners are factory-set to natural gas E.The Logatop VM2.0/3.0 can be converted to naturalgas LL by simply replacing the two gas butterfly valves(included in the burner standard delivery). Gas butterflyvalves for LPG are available as accessories.The Logatop VM4.0/5.0 can be converted to naturalgas LL by replacing the central gas butterfly valve at thefan inlet (included in the burner standard delivery).A fitting is made available at the factory for the gasconnection ( fig. 23, [5], page 31). With the LogatopVM2.0/3.0, the gas connection can be made on the left orright hand side. A contractor can easily change the gasconnection direction on site, depending on which side thedoor hinges. For this, it is simply a matter of releasing twofittings and rotating the gas manifold.A better visual impression is created if the gas connectionis installed entirely inside the boiler casing. To do this, thegas line is routed on site from the fitting on the gasmanifold, inside the burner hood downwards and throughthe relevant apertures in the front and back panels of theboiler block, so that the gas connection is located with allthe other connections at the back of the boiler.With the Logatop VM4.0/5.0, the gas connection is madeon the left hand side. Outside the burner hood, it can bemoved to the required position (on site).Floor standing condensing boiler Unit Logano plus SB315 VMBoiler size 50 70 90 115Logatop VM burner – 2.0 2.0 3.0 3.0Electrical connection V/Hz 230/50Fan power consumption 1)W 40 45 50 70Gas supply pressure mbar Natural gas: 20 / LPG: 50Modulation range – 1:3Sound pressure levelRoom min/max dB(A) 50/57Flue pipe min/max dB(A) 70/77 72/82 74/86 76/89Standard emissions factorNO x mg/kWh ≤ 40CO 2)mg/kWh ≤ 5Table 9 Specification for the Logatop VM premix gas burner for the Logano plus SB315 VM Unit version1) At approx. 50 % load2) Average for seriesFloor standing condensing boiler Unit Logano plus SB615 VMBoiler size 145 185 230 310Logatop VM burner – 4.0 4.0 5.0 5.0Electrical connection V/Hz 230/50Fan power consumption 1)W 140 160 180 200Gas supply pressure mbar 20Modulation range – 1:3Sound pressure levelRoom min/max dB(A) < 62Flue pipe min/max dB(A) < 91Standard emissions factorNO x mg/kWh ≤ 40CO 2)mg/kWh ≤ 5Table 10 Specification for the Logatop VM premix gas burner for the Logano plus SB615 VM Unit version1) At approx. 50 % load2) Average for seriesTechnical guide Floor standing gas/oil condensing boilers Logano plus SB315, SB615, SB745 – 6 720 802 589 (2012/01) 33