Technical data

103
CTC EcoZenith i550 Pro
For the installer
Socket for extra
el. heater E5
Power supply
L1, L2, L3.
Backup heating
thermostat E13
Contactor K3
Contactor K1
Max thermostat F10
Contactor K4
Contactor K2
Fast-blow fuses F1/F2
Expansion card A3
Connections X1-X7.
Sensor, upper B5
Sensor, lower B6
Sensor solar B33
Main circuit card A2.
Connection to display A 1
Connections,
el. heaters
Terminal block: G41-G48.
Terminal block: G31-G40.
Terminal block: G11-G22.
Terminal block: A11-A20.
Terminal block: A21-A30.
16.1 Positioning of electrical components
Lower el.heater E1/E4
Upper el.heater E1-3 a/b
Terminal block X10