11512.18 Solar Operation (Optional)12.18.1 Solar Operation:Solar function: This function allow user to control the solar pump to operate depend on the solar sensor reading compare to thetank installed. Solar pump will circulate the hot water energy store at solar panel to heat up the DHW Tank orBuffer Tank.Solar Connection Diagram: Solar function can only enable when the Optional PCB is connected. Few part as below need to install to control the solar operation:o Solar Panelo Solar Pumpo Solar Panel Sensoro Tank Sensor (Buffer tank sensor OR DHW Tank sensor depend on the connection direction)* During Solar Connection to the system, installer need to alert on the high water temperature may flow to thezone circuit or DHW piping circuit. Therefore pipe which withstand higher water temperature need to beinstalled. Solar remote control setting1 Solar Setting can only be set when the optional PCB connection is select "YES"2 By remote controller, Setting as below list can be set for solar function operation (Installer Menu)o Solar Function ("YES" or "NO)o Tank Connection Direction ("DHW TANK" or "BUFFER TANK")o Delta T turns ON: Difference temperature setting between solar panel sensor and Tank to turn on solarpump. (Range :5 ~ 15°C)o Delta T turns OFF: Difference temperature setting between solar panel thermistor and Tank to turn offsolar pump. (Range :2 ~ 10°C)o Outdoor temp for Anti-Freeze : Outdoor temp to start Anti-Freeze control for solar circuit. (Range : -20 ~10°C)o Tank Temperature HI Limit Set (Range : 70 ~ 90°C)
