SR981S/SR982S operation manual of solar pump station
Page 63 of 85
8.5.4.2 DT2S Standard temperature difference of pump 2 (for pump 2 speed
adjustment )
Setup steps:
To access main menu FUN, select “DT2S” submenu,
“DT2S 08
o
C” shows on the screen.
►Press “SET” button, parameter “08
o
C” blinks on the
screen
►Press “ ” button, to adjust the standard DT2S,
adjustable range: 2
o
C
～
30
o
C, factory set is 08
o
C
►Press “ESC” button to exit the menu or wait for 20 seconds to exit, parameters are
saved 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 01
o
C” shows on the screen.
►Press “SET” button, parameter “01
o
C” blinks on the
screen
►Press “ ” button, to adjust standard RIS2,
adjustable range:1
o
C
～
20
o
C, factory set is 1
o
C
►Press “ESC” button to exit the menu or wait for 20 seconds to exit, parameters are
saved automatically.
8.5.10 OHQM Thermal energy measuring
Description:
Controller has function of thermal energy measuring; it can measure the energy which is
transferred from collector to tank. For the sake of measuring, the temperature on flow and
return pipe should be checked, and an extra flow meter should be installed on the
circulation pipe, it is used for measuring the flow rate.
The thermal energy transferred by solar system is calculated with measured parameters
flow rate and temperature T1 and T7 (installed on the flow and return pipe). Thermal
energy get in the current day displays in DkWh, accumulative thermal energy displays in
kWh or MWh. The amount of 2 values is the total energy output.
