CTC Union EcoZenith i555 Pro 1x230V, Installation And Maintenance Manual

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22 CTC EcoZenith i555 Pro
2.10.2 Wood operation control
The wood boiler charges the EcoZenith until the sensor of the lower tank
reaches the factory-set 80 °C before the charge pump starts up and
transfers hot water from the lower tank into the top of the fi rst buffer tank.
Charging continues until the sensor in the lower tank has fallen 3 degrees
(transfer starts at 80 degrees and stops at 77 degrees). The lower tank must
be at least 7 degrees warmer than the buffer tank for charging to be allowed
to start, based on the factory-set values.
2.10.3 Recharging from Buffer Tank to EcoZenith
Schematic diagram only the installer adds expansion vessels, safety valves, etc., and sizes the system.
Recharging from Buffer Tank to the EcoZenith is always performed to the
upper tank, if possible. If charging to the EcoZenith’s upper tank is not
possible due to too low a temperature difference, the controller checks if
charging to the lower tank is possible. The condition for recharging is a 7
degree temperature difference.
Charging from the buffer tank to both the upper and the lower tanks in
the EcoZenith is stopped when the temperature difference has fallen to
a difference of 3 degrees. The temperature levels stated above can be
adjusted.