SUNFLOWER SR81Q - Page 26

Instruction of SR81 Split Pressurized Solar Hot Water System
Page 25 of 59
selectable (Default is 2
o
C), for example, when tank maximum temperature is set to 70
o
C,
then at 68
o
C, Maximum tank temperature protection function is deactivated automatically.
Menu Structure
Main
menu
Subme
nu
Factor
y set
Adjustabl
e range
Step per
adjust
Description
LOAD
Tank heating
DTO
6K
1-50K
0.5K
Switch-on temperature difference of
tank heating
DTF
4K
0.5-49.5K
0.5K
Switch-off temperature difference of
tank heating
DTS
10K
1.5-50K
0.5K
Temperature difference of pump
speed adjust
RIS
2K
1-20K
1K
Temperature increase range for pump
speed adjust
SMX
70℃
4-95℃
1℃
Maximum temperature of tank
SMAX
S2
S2. S3
Sensor for Maximum temperature of
tank ( S3 for T3, S2 for T2)
HYST
2K
0.1-10K
0.1K
Hysteresis of maximum temperature
of tank
Setup the function
► Select “LOAD” main menu
► Press “SET”, “DTO 6K” displays on the screen
► Press “SET”, “6K” blinks
► Press” +/-”, to adjust the switch-on temperature of the solar circuit pump