Technical data

119

CTC EcoZenith i550 Pro

For the installer

The CTC EcoZenith i550 Pro has two 9 kW immersion heaters, both factory

installed. A third 9 kW immersion heater can also be installed thus giving

total installed heating power of 27 kW. The third immersion heater is a CTC

accessory and is connected as follows:

1. Disconnect the electrical supply to the EcoZenith.

2. Drain the EcoZenith of water if required.

3. Remove the four screws holding the plastic front, two at the top and two

at the bottom, and then remove the plastic front. Ensure that the display

cable is disconnected before removing the front completely. The cable

is disconnected by pressing in the pin on the connector and pulling the

cable downwards.

4. Remove the 2” plug from where the upper immersion heater (15) shall be

installed.

5. Install the immersion heater using a new, greased ﬂat gasket. Recom-

mended tightening torque - 220 Nm.

6. The cabling for the heater is coiled and strapped. Remove the strap-

ping and connect the white cables marked 6 kW to the brown end cable

sleeve on the heater, and connect the black cables marked 3 kW to the

black end cable sleeve on the heater.

7. Fill the EcoZenith with water and ensure that there are no leaks.

8. Fit the front.

9. Switch on the electricity supply.

10. Deﬁne the immersion heater in the menu

Installer/Deﬁne system/Def El. heaters/upper el.heater 15

11. Test the immersion heater connections in the menu

Installer/Service/Function test/Test el.heaters

12. Set immersion heater operation in the menu

Installer/Settings/Electric heaters

13. The upper immersion heater (15) is now ready for use.

17. Installation of optional immersion heater