SR971,SR972 Solar station operation manual
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36
7.6.5 Submenu - REC Tank recooling temperature
Description:
If temperature of first tank is over its maximum temperature, and at the same time, collector
temperature is minimum 5
o
C lower than tank temperature, then solar pump is triggered,
through this reversed circulation, tank temperature is reduced by heat loss occurs in collector,
solar pump keeps working until tank temperature drops below its maximum temperature.
Setup steps:
To access main menu TEMP, then select submen
u REC, “REC OFF” displays on screen,
default set is off.
►Press “SET” button, parameter “OFF” blinks on screen
►Repress “SET” button to activate or deactivate this
function, after function activated; factory set is “REC ON”
► Press “ESC” button to exit the menu or wait for 20
seconds to exit ,, parameters are saved automatically.
REC signal displays on screen, it indicates this function is activated.
7.6.6 Submenu - SMX1 Maximum temperature of tank
Description:
When the DT between collector T1 and Tank( T2) caters the switch-on DT of circulation, solar
pump is triggered, but in order to avoid the high temperature inside tank, controller checks
whether the temperature (T3) in top of tank is higher than maximum temperature of tank,
when T3 is higher than preset SMX temperature, solar pump is ceased even at the case that
DT caters condition. When tank temperature T3 drops and is 2
o
C below the SMX, solar
pump restarts when DT caters condition.
Setup steps:
To access main menu TEMP, then select submenu SMX1, “SMX 1 60
o
C” displays on screen.
►Press “SET” button, parameter “60
℃
”blinks
►Repress “SET” button to activate and deactivate this
function, if function deactivated, “SMX1 - - -” displays on
the screen.
