24
Installation and maintenance instructions ecoFIT sustain 0020277262_02
Condition
: If installing a multi-circuit control.
▶
Change the pump's operating mode
d.18
from Eco (in-
termittent pump operation) to Comfort (continuous pump
operation).
Condition
: When connecting a control (230 V).
≤ 30 mm
N
L
X1
230V~
RT
▶
Connect the control to the main plug.
▶
Remove the bridge from the
24V=RT
plug.
Condition
: 230 V 3-wire connection
▶
Connect the boiler only using the set with article number
0020244337 (Installation Kit, 3-wire, Vaillant).
–
When connecting, observe the instructions for the
set.
▶
Connect the control to the main plug X1.
–
Terminal assignment: L
–
Phase, N
–
neutral con-
ductor,
–
earth
▶
Draw the end user's attention to the fact that the follow-
ing features are present with this installation type.
◁
The frost protection function is deactivated. If the
product is installed in a room where there is a risk
of frost and it has not been protected by a room ther-
mostat, install an additional frost protection thermo-
stat.
◁
The pump programmes are not active.
◁
If the product is switched off, the display is switched
off.
◁
Each time the unit is started, the fan runs for
20 seconds.
◁
Residual heat in the heating return may result in the
product blocking the burner for 10 minutes.
4.
Close the electronics box.