SR981S/SR982S operation manual of solar pump stationPage 72 of 85►Repress “SET” button, parameter “AHO 50oC” appearsand “50oC” blinks on the screen, it indicates the functionis enabled.►Press “ ” button to adjust switch-ontemperature of this function, adjustable range (5 oC ～95oC）► Press “ESC” button to exit the menu►Press “ ” button, “AHF 55oC” appears on the screen, and “55oC” blinks on thescreen, default is “55oC”►Press “ ” button to adjust switch-offtemperature of this function, adjustable range (5 oC ～95oC）► Press “ESC” button to exit the menu or wait for 20 seconds to exit automatically,parameters are saved automatically.When this sign shows on the screen, it indicates that the thermostat function isactivated.8.5.15 BYPR Bypass function (high temperature)Description:By bypass electromagnetic valve R1 (detailed see 6.7 system description), collector isswitched either to heat tank or to preheat the pipe between collector and tank; first of all,temperature difference between collector T1 and tank T2 should meet the switch-ontemperature difference (DT1O), thenWhen bypass temperature (T4) is higher than (tank temperature + switch-off temperaturedifference (DT1F) +2oC), electromagnetic valve will switch collector to heat tank.When bypass temperature (T4) is lower than (tank temperature + switch-off temperaturedifference (DT1F)), electromagnetic valve will switch collector to heat pipe.(Note:The function only available on system1,2)Setup steps:To access submenu BYPR, “BYPR OFF” displays on the screen.►Press “SET” button, parameter “OFF” blinks on the screen, default set is OFF.
