Solar Controller SRK868V6 Installation and Operation Instructions
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12
3.8 Time controlled user Hot Water circulation for UP TO 3 periods per day
The controller can be programmed for up to 3 periods of each day to activate the P2 output that can be used to control a
pump to circulate the hot water in the user hot water pipe. During each of the programmed time periods the pump control
output (P2) will be switched ON for 3 minutes and then OFF for 15 minutes. This sequence will continue throughout each of
the 3 preprogrammed periods of each day.
Setup procedure:
►
Press the “
Pipe timing
” button to set the START time of
circulation. The time will flash.
►
Press “
▲
”“
▼
” button to adjust the START hour
►
Press “
←
”
、
“
→
” button to go to minutes
►
Press “
▲
”“
▼
” button to adjust the START minutes
►
Press the “
Pipe timing
” button again to set the END time of
circulation
►
Press “
▲
”“
▼
” button to adjust the END hour
►
Press “
←
”
、
“
→
” button to go to minutes
►
Press “
▲
”“
▼
” button to adjust the END minutes
After 6 seconds, the controller will lock-in the settings.
Perform the above procedure for all three time period for the day. A number 1-3 displayed on the screen to indicate the
preset time period.
NOTES:
•
To turn OFF the timed circulation for one of the 3 periods, set the ON (start) time and the OFF (stop) time to the same
value.
•
During normal operation, pressing the “
Pipe timing
” button will display the programmed settings.
Manual operation:
During normal operation, the hot water circulation pump control output (R1) can be turned ON manually by pressing the
“
ON/OFF
” button. The “Pipe circulation” symbol will be displayed and the R1 output will be activated for a 3 minute period,
then it will stop automatically.
To stop the pump P2 manually, press the “
ON/OFF
” again.
3.9
Temperature controlled user Hot Water circulation
Note:
T4 sensor is not included with the standard controller. The user needs to have an extra temperature sensor T4 to be
able to use this function.
The controller can provide a temperature-controlled hot water circulation function. This function needs an extra hot water
circulation pump ( P2) and a sensor (T4), which should be placed on the house hot water return pipe. When the
temperature sensed by the sensor T4 is lower than the preset ON temperature, the hot water circulation pump (P2) is
activated and works until the temperature exceeds the OFF temperature.
For instance: if the preset ON temperature is 40
o
C, then when T4 is lower than 40
o
C, the P2 pump is activated and it will be
turned OFF when the temperature is higher than 45
o
C.
To Enable / Disable this function:
►
Press the “SET” button 2 times. The hot water circulation
temperature setting will flash. The default setting is “OFF” indicated
on the display as: “-- --”.
►
Press “OK” button to activate this function.
►
Press “
▲
”“
▼
” button to adjust the temperature of circulation
pump.
Adjustable range: 20
o
C(68F) to 50
o
C (122F).
After 6 seconds, the controller will lock-in the settings.
►
To deactivate this function press “OK” button while in the
circulation temperature preset mode. The display will indicate: “ -----“ .
