CONTROLLER, HEAT SOURCE SYSTEM, CONTROL METHOD AND PROGRAM

To provide a controller capable of preventing the number of heat source units from increasing unnecessarily in a case where a heat source unit exists with a light load stopped.SOLUTION: A controller 10 for controlling the number of operating heat source units TR-1 to TR-3 in a heat source system comprising a plurality of heat source units TR-1 to TR-3, comprises a determination unit 12 that determines whether at least one of the plurality of heat source units TR-1 to TR-3 is in a state where a light load is stopped, and a control unit 14 that controls increase in the number of the heat source units TR-1 to TR-3 based on a predetermined increase condition. When the determination unit 12 determines that the heat source devices TR-1 to TR-3 with the light load stopped are present, the control unit 14 does not increase the number of heat source devices TR-1 to TR-3 even when the increase condition is satisfied.SELECTED DRAWING: Figure 1 【課題】軽負荷停止中の熱源機が存在する場合、不必要な熱源機の増段を防止する制御装置を提供する。【解決手段】複数の熱源機ＴＲ−１〜３を備える熱源システムにおける熱源機ＴＲ−１〜３の運転台数を制御する制御装置１０であって、複数の熱源機ＴＲ−１〜３のうちの少なくとも１台が軽負荷停止中か否かを判定する判定部１２と、所定の増段条件に基づいて熱源機ＴＲ−１〜３の増段を制御する制御部１４と、を備え、制御部１４は、判定部１２が軽負荷停止中の熱源機ＴＲ−１〜３が存在すると判定すると、増段条件が満たされる場合でも熱源機ＴＲ−１〜３の増段を行わない。【選択図】図１