Nu-Way MG860-LN T3S Installation & Maintenance Manual
                     | |
Contents
| 
11E.06.99 • G. 21.09.1120 Calculation principles for gas burner adjustmentThe values given in the tables are setting values for start-up.The necessary system adjustment must be newly determined in each case.General:the calorific value (Hi,n) of fuel gases is generally specifiedfor the normal state (0°C, 1013 mbar).Natural gas type E Hi,n = 10.4 kWh/m3Natural gas type LL Hi,n = 9.3 kWh/m3LPG gas (Propane) Hi,n = 25.89 kWh/m3Gas counters measure the volume of gas in the operational state.Gas flow determination:To allow the heat generator load to be adjusted correctly, the gas flow rate must be determined in advance.Example:Altitude above m.s.l. 230 mBarometric air pressure B (acc. to table) 989 mbarGas pressure PG on gauge 20 mbarGas temperature ϑG 16°CBoiler output Qn 220 kWEfficiency ηK (assumed) 92%Calorific value Hi,n 10.4 kWh/m3Gas flow in standard state (Vn)Gas flow in operating state (V B)Conversion factor (f)Annual average air pressureLegend:Qn = boiler output [kW]ηK = efficiency [%]Hi,n = lower standard calorific value [kWh/m3]f = conversion factorB = barometric air pressure [mbar]pG = gas pressure at gas meter [mbar]ϑG = gas temperature at gas meter [°C]Average geodetic altitude of thesupply region above sea level [m]from 1 51 101 151 201 251 301 351 401 451 501 551 601 651 701to 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750Annual average of air pressure (mbar) 1016 1013 1007 1001 995 989 983 977 971 965 959 953 947 942 936 930VnQnηk H× i n,-------------------- 220kW0 92 10× 4kWhm3-----------, ,----------------------------------------= 23m3h------= =VBVnf------23m3h------0 94,-------------= 24m3h------= =f B PG+1013-------------- 273273 ϑG+--------------------×= |
Related manuals for Nu-Way MG1350-LN T3S
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine