Technical data

Installation and Servicing ecoTEC plus22

Fig. 4.8 Mains Supply Connection

Fig. 4.7 Mains Supply Connection

4.4.1 Connection to the main supply

• Lower the electronics box, see fig. 4.7.

Opening the electronics box

• Unclip the bottom of the electronics box cover and

hinge back to reveal the connection plugs.

• Feed the power supply flex into the appliance

and the electronics box through the cable clamps

provided.

4.4.2 Wiring system

• Connect the flex to the L, N and earth terminal

block, see fig 4.8.

Green/yellow (earth) wire – boiler terminal Earth

sign Blue (neutral) wire – boiler terminal N

Brown (live) wire – boiler terminal L

Caution!

Do not connect any mains 230V power to the

connections 7-8-9 or BUS (+,-).

Note!

Ensure that the wires are securely fixed in the

terminal block.

• Refit the electronics box cover by pushing

into place until it clips back into position.

• Raise the electronics box.

• Check the electrical installation by carrying out

short circuit, earth continuity and resistance to earth

tests and a check for correct polarity.

4 Boiler installation sequence

UNCLIP

ELECTRONICS BOX

fuse T2E

250 Volts

Pump

connection

Mains supply

connection

987+- 4 53

230V

24VBUS

NL NL

X20

9 4 53NLI

Supplied by HeatingSpares247.com