SR981S/SR982S operation manual of solar pump stationPage 63 of 858.5.4.2 DT2S Standard temperature difference of pump 2 (for pump 2 speedadjustment )Setup steps:To access main menu FUN, select “DT2S” submenu,“DT2S 08oC” shows on the screen.►Press “SET” button, parameter “08oC” blinks on thescreen►Press “ ” button, to adjust the standard DT2S,adjustable range: 2 oC～30 oC, factory set is 08oC►Press “ESC” button to exit the menu or wait for 20 seconds to exit, parameters aresaved automatically.8.5.4.3 RIS2 Gain for circulation pump 2 (for pump 2 speed adjustment)Setup steps:To access main menu FUN, select “RIS2” submenu,“RIS2 01oC” shows on the screen.►Press “SET” button, parameter “01oC” blinks on thescreen►Press “ ” button, to adjust standard RIS2,adjustable range:1oC～20 oC, factory set is 1oC►Press “ESC” button to exit the menu or wait for 20 seconds to exit, parameters aresaved automatically.8.5.10 OHQM Thermal energy measuringDescription:Controller has function of thermal energy measuring; it can measure the energy which istransferred from collector to tank. For the sake of measuring, the temperature on flow andreturn pipe should be checked, and an extra flow meter should be installed on thecirculation pipe, it is used for measuring the flow rate.The thermal energy transferred by solar system is calculated with measured parametersflow rate and temperature T1 and T7 (installed on the flow and return pipe). Thermalenergy get in the current day displays in DkWh, accumulative thermal energy displays inkWh or MWh. The amount of 2 values is the total energy output.
