16
Installation and maintenance manual ecoMAX 665 / 0020020159_03
4.8.1 Mains connection
a
Caution!
Supplying power to the wrong plug terminals of
the Pro E system can destroy the electronics.
Only connect the 230 Vac live supply to boiler
terminal connections marked LNE.
The rated voltage of the mains must be 230 V; at rated
voltages above 253 V and under 190 V, damage may occur.
The mains supply must be connected via a fixed connec-
tion and a separator with a contact opening of at least
3 mm (e.g. fuses, circuit breakers).
4.8.2 Connecting
controllers
Mounting is to be carried out as stated in the relevant instal-
lation manual. The necessary connections to the boiler‘s
electronics (e.g. when using external controllers, external
sensors or similar devices) are to be performed as follows:
• Remove the front casing of the appliance and lower
the electronics box (1) forward.
• Unclip the back cover (2) of the electronic box from
its fixings (3) and lift it up (see fig. 4.9).
• Pass the connecting cables of each of the components
to be connected through the grommets (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 (see fig. 4.9).
• 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 corresponding ProE plugs or slots of the electronics.
Vaillant controllers are intended to be plugged into the
front of the appliance without the need for additional
wiring. If a remote wall mounted controller is required
then the patress box provided can be used Additional
wiring will be required as described.
a
Caution!
Do not connect 230 V mains to terminals 7, 8,
or 9. The electronics could be destroyed by this!
• If no room/clock thermostat is in place, provide a jum-
per between terminals 3 and 4 if not already present.
Remove the jumper if a room/clock thermostat is con-
nected to terminals 3 and 4.
• 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 cas-
ings until you hear the clips click into place.
• Attach the front casing.
• In order to attain pump mode I (continuous pump) for
the multicircuit controller (e.g. VRC 630), increase the
pump over-run time to 15-20 minutes (diagnosis point
d.1, see chapter 6.2).
4
3
Fig. 4.11 Opening the rear of the electronics box
4.8.3 Connecting accessories and external system
components
L N
230V
5
Fig. 4.12 Example of cable insertion
The Vaillant ProE plug in terminal system facilitates
a quick and trouble-free connection of accessories and
external system components to the appliance electron-
ics. Proceed with the wiring up as follows:
• Take off the front casing of the appliance and lift the
electronics box forward.
• Unclip the back cover of the electronics box (1) from
its fixings (2) and lift it up.
4 Installation
Содержание ecoMAX 665
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