SUNFLOWER SR81 - Page 31

Instruction of SR81 Split Pressurized Solar Hot Water System
Page 30 of 48
Menu structure
Main
men
u
Subm
enu 1
Subm
enu
2
Facto
ry
set
Adjustable
range
Step
per
adjust
Description
COO
L
Cooling function
OSTC
OFF
ON/OFF
Tank cooling function
DTCO
20K
1-30K
0.5K
Switch-on temperature
difference of cooling function
DTCF
15K
0.5-29.5K
0.5K
Switch-off temperature
difference of cooling function
OHDP
OFF
ON/OFF
Heat transferring by external
radiator ( only in case there is
available output)
OTST
80℃
20-160℃
1℃
Temperature set point for heat
transferring ( hysteresis 5
o
C)
OTPM
ON
OTPM
ON=pump
Logic
OTPM
OFF=Valve
logic
Pump control logic and valve
control logic
REL
R3
R3,R2
Output ports
Function setting:
OSTC (Tank cooling) setup
►Select “OSTC” function submenu,”OSTC” displays on
the screen
►Press “SET”, “OSTC OFF” displays on the screen