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

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127
CTC EcoZenith i555 Pro
11
02
01
Y1
Y40
Bufferttankar
12
06 07
E5
E1/E4
B33
B6
B5
B41 (X1 9)
B42 (X2 11)
G43 (X727) G45 (X730)
B42 (X2 11)
EL 1-3 a/b
14.3.6 CTC EcoZenith i555 Pro – Buffer tanks
One or more buffer tanks can be connected to increase the water volume;
this is done most commonly in connection with wood or solar energy
operation. When the EcoZenith controls the charging of the wood boiler and
solar energy, buffer tanks can be charged with lower temperatures and thus
higher efficiency.
The 3-way valve (Y40) is connected to the upper connection from both the
EcoZenith’s upper and lower tanks and then to the top of the first buffer tank.
Ensure that the ports on the 3-way valve (Y40) are set as in the schematic
diagram. If it is necessary to swap ports (
■
and
▲
), two jumpers in the
actuator must be reconnected. See the chapter on Electrical installation for
more information. If several buffer tanks are used, they must be connected in
series. The return from the buffer tanks goes to the lower connection on the
EcoZenith’s lower tank via the charge equipment (12). The charge equipment
and 3-way valve are “External tank charging” accessories. The sensors (B41)
and (B41) are used to control the charging and discharging of the buffer
tanks.
Also refer to the "External buffer tank" section in the "Detailed Menu
Descriptions" chapter (Installer/Settings/External Buffer Tank).
Buffer tanks