Vaillant ecoMAX 665 Installation And Maintenance Manual page 17

• Guide the connecting cables of each of the components
to be connected through the PG screw connections
(4) located on the bottom of the appliance to the left.
• Then insert the connecting cables (5) into the elec-
tronics box and cut them to length.
• Strip the connecting cable by about 2-3 cm and bare
the wires (see fig. 4.10).
• Connect the connecting cables as shown by fig.
4.10/4.11 to the ProE plugs or slots of the electronics.
Please note that the jumper on the ProE plug should be
removed when connecting a maximum thermostat (feed
thermostat) for floor heating. Should a remote safety
circuit for a mini pressurisation device or a pump flow
switch. This will prevent the boiler firing should such an
external device fail.
• Close the rear cover of the electronics box and press
it in until you hear it click into place.
• Lift the electronics box up and press it by the two
clips on its left and right against the lateral appliance
casings until you hear the clips click into place.
• Attach the front casing.
Installation and maintenance manual ecoMAX 665 / 0020020159_03
Installation 4
17