How to install the wiring centre | Circoflo | Underfloor Heating Your Way

How to install the wiring centre

INSTALLING C FC-EWC40110
CIRCOLFLO EWC4-230V 4 WAY WIRING CENTRE
In order to install the device proceed as follows:


1
FIXING THE DEVICE TO THE WALL
  • Remove the 4 screws labelled as (1) in Fig. 1 to remove the front plastic cover.
  • Fix the device base to the wall by using the two screw holes labelled (2) in Fig. 2.

When working with electric tools in close proximity to the electronic parts, double check that the device is completely disconnected from 230V~ mains and take care to avoid damaging the internal electronic components.


2
FIXING THE CABLES
  • Make the electrical connections as shown in ‘ Electrical Connections ‘ below.
  • The cables should be folded as shown in Fig. 4 and made to pass through the cable glands (4).

If you use a cable entry and its respective cable gland, remove the plastic tab (3) in Fig. 4 with suitable pliers to open the passage for the cable.


3
REPLACING THE FRONT PANEL
  • Fix front panel to the enclosure and fasten in place with the four screws (1) in Fig. 1.

4
Warning before proceeding

Please ensure that the electrical wiring of the installation and connections to and from the wiring centre are in accordance with BS7671, the latest edition of the IET Wiring Regulations. The wiring centre must be wired to the electricity supply through a switch capable of disconnecting all poles compliant to the current safety standards and with a contact separation of at least 3mm in all poles. Before commencing work on the installation, the electricity supply must be disconnected. Please read the following carefully and also consult the wiring diagram, Fig.5 which show the connection of the power supply and external components to the wiring centre.

How to Install the Wiring Centre Fig 5


5
ELECTRICAL CONNECTIONS

230V~POWER SUPPLY

Legend

A. On LED
B. Boiler/pump LED
C. Power supply terminals
D. Terminals for connection of the external time switch (optional)
E. Pump Terminals (230V output)
F. Terminals for burner wiring (Volt free)
G. Fuse F1
H. 4 thermostats + actuators outputs (output 230V~)

Terminals L and N are the inputs for the power supply:

connect to 230V~, making sure that terminal N is wired to the Neutral. The electronic circuitry and loads are protected by the 4A time-delay fuse F1 ((G) Fig. 3).

Terminals L2 and N are the 230V~ powered outputs for connecting the circulating pump. Terminals NO and C are the outputs that control the boiler. These are volt free contacts so that they can be used for boilers with low voltage control circuits.

To provide global time control of all 4 zones please refer to the TIMESWITCH section on this page for further details and Fig.5 for the electrical connections.

All outputs of the actuators and thermostats section are ‘powered’ outputs, i.e. they provide the voltage for the device connected to them. Note: Each of the four wiring channels has terminals for one thermostat and one actuator only.