Instruction of SR81 Split Pressurized Solar Hot Water System
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function is running, corresponding signal blinks on the screen
SW: screen version, SW-M: controller version
DAYS: running time of display, MDAY: running time of controller
Thermal energy is showed as kWh under kWh channel, is showed as MWh under MWh
channel, total accumulation of thermal energy produced by solar system is the plus of
kWh + MWh
Enter the value check interface, if you don’t press any button within 3 minutes, screen
will exit the check interface and turn to main interface.
7. Functions operation and parameters setting (for user)
7.1 THET Timing heating
Function description:
Electrical heater or gas / oil boiler is normally used as back-up heating source of a solar hot
water system. Through this timing heating function controller can keep the tank temperature
constantly. When tank temperature (T3) drops below the switch-on thermostats temperature,
back-up heating output HR is triggered, when T3 rises up to the switch-off thermostats
temperature, HR is ceased.
Set time sections and temperature for timing heating daily
Factory set:
The first time section: default at 4:00 to start heating, and at 5:00 to stop heating, and
the switch-on temperature of heating is 40
o
C
，
switch-off temperature is 50
o
C
。
The second time section: default at 10:00 to start heating, and at 10:00 to stop heating,
and the switch-on temperature of heating is 50
o
C
，
switch-off temperature is 55
o
C
。
The Third time section: default at 17:00 to start heating, and at 22:00 to stop heating,
and the switch-on temperature of heating is 50
o
C
，
switch-off temperature is 55
o
C
。
If you set the start time and close time with a same value, which means within this time
section, the timing heating function is switched-off. For example, at the second time section,
start time is set at 10:00, but close time is also set at 10:00.
Timing heating function is run at the preset time section, 3 time sections can be set, and
within every time section, the desired temperature may be different. The adjustable range of
switch-on temperature is 0
o
C ~ (OFF-2
o
C), switch-off temperature range is (ON+2
o
C) ~
95
o
C.
SMT Intelligent heating
