Enertech CTC EcoLogic Family series, Installation And Maintenance Manual, Page: 14 / 128

14
CTC EcoLogic Pro/Family
General Information
1.5 Solar panels*
Solar panels can be connected to the buffer tank, hot water system and the
bedrock/ground source heating circuit via diverting valves.
When the temperature rises and the temperature difference exceeds 7°C
(factory setting) between the solar panels and the hot water tank, the
charge pump starts and transfers the solar heat to the hot water system.
The speed-controlled pump controls the low so that it always delivers a
temperature of at least 7°C higher. This means that if solar panel output
rises, the charge pump will increase the low, and if solar panel output
decreases, the charge pump will reduce the low. When the hot water tank
temperature increases or the solar panels drop in temperature and the
temperature difference becomes 3°C (factory setting), the charging stops
and does not start again until the temperature is at least 7°C warmer than in
the hot water tank.
If both the hot water tank and buffer tank are deined, the hot water tank
is prioritised. Charging irst takes place to the hot water tank; once the set
setpoint has been reached, charging changes to the buffer tank. Charging
continues until a need for hot water arises or the set setpoint has been
reached.
There are frost protection functions for the solar panels/the collector (see
the Installer/Settings/Solar panels/Protection collector menu).
Heat exchangers and pumps (G32) do not need to be installed to the solar
heating circuit if there is already an existing loop in the connected hot water/
heating tank.
*Applies to the CTC EcoLogic PRO
only.
Solar panels