SUNFLOWER SR81Q - Page 37

Instruction of SR81 Split Pressurized Solar Hot Water System
Page 36 of 59
Note:
1. When collector overheat temperature OTST is 10K below the CEM temperature of
collector emergency shutdown, then collector overheat temperature OTST is locked
2. Heat transferring function is only available when collector cooling function (OCCO) is
deactivated.
Menu structure
Main
men
u
Subm
enu 1
Subm
enu
2
Facto
ry
set
Adjustable
range
Step
per
adju
st
Description
COO
L
Cooling function
OSYC
OFF
ON/OFF
System 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