Technical data

108
CTC EcoZenith i550 Pro
For the installer
Solar recharging borehole, charge pump (G31) and
diverting valve solar (Y31/)
230V 1N~
NB: It is important to connect the phase voltage to L (pole 9); refer to the
wiring diagram.
The diverting valve is connected to the following terminal blocks:
(Y31) Diverting valve, expansion card X6:
Relay output 8 A: Open to
bore hole
X6 pole 8 also controls Charge
pump – recharging bore
hole (G31)
Phase: Open Tank X6 pole 9
Zero: X6 pole 11
Pole 8 is connected to an external connection box which distributes voltage
to the solar diverting valve (Y31) and the Recharge Bore Hole charge pump
(G31). Refer to the wiring diagram.
Check the function by test running the pump in menu
“Installer/Service/
Function test”
in the control system.
(G40) Circulation pump for DHW
230 V 1N~
The circulation pump is connected to the following terminal blocks: (G40)
Circulation pump, expansion card X6:
Phase: X6 pole 1
Zero: X6 pole 3
Earth: X6 pole 2
Check that the pump is correctly connected by test running it in menu
“Installer/Service/Function test” in the control system.
(G41) Circulation pump external DHW tank
230 V 1N~
The pump is connected to the following terminal blocks:
(G41) Charge pump, expansion card (X7):
Phase: X7 pole 19
Zero: X7 pole 20
Earth: X7 pole 21
Check that the pump is correctly connected by test running it in menu
“Installer/Service/Function test” in the control system.