| 摘要 |
PURPOSE: A method for controlling individual heating using a heating water supply and the differential pressure of return water is provided to prevent noise generated by frequently operating and stopping a boiler under a small heating load condition. CONSTITUTION: A method for controlling individual heating using a heating water supply and the differential pressure of return water comprises following steps. Whether or not a heating key is turned on and the heating is maintained is determined while a temperature controller receives signals from room controllers(S1). If the heating key is turned on and the heating is maintained, the burner and pump of a boiler are operated and the differential pressure between the burner and pump is calculated(S4). Whether or not the calculated differential pressure is same or above the minimum set differential pressure is determined. Whether or not the calculated differential pressure is same of below the maximum set differential pressure is determined(S5). If the calculated differential pressure is not same or above the minimum set differential pressure; the differential pressure is not same or below the maximum set differential pressure; the flow rate of a pump changes according to the present differential pressure(S6). The flow rate of the pump and the heat of a burner increase or decrease, and the differential pressure is calculated by detecting each pressure. [Reference numerals] (AA) Start; (BB, DD, FF,HH, JJ, LL) No; (CC, EE, GG, II, KK, MM) Yes; (NN) End; (S1,S11) Heating on or maintained (room controller); (S10) �T_SET≤T_m; (S12) Combustion off, continue to operate a pump; (S13) Combustion off, andβT_SET>T_m; (S14) Heating off (room controller); (S15) Boiler stop(combustion OFF, pump stop); (S16) Fluid control valve closed(checked); (S2) Fluid control valve opened or checked; (S3) Operating a boiler(combustion ON, pump operated); (S4) Detecting the pressure of a distributor, and calculating differential pressure; (S5) P_0≤P_0≤P_1; (S6) Requiring for pump flow rate changes; (S7) Changing the boiler pump flow rate and heat rate; (S8) Requiring for maintaining flow rate to a controller boiler; (S9) Maintaining the boiler pump flow rate and heat rate
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