Operation; Operating Concept; Installer Level Overview - Vaillant ecoFIT pure 825 Installation And Maintenance Instructions Manual

6 Operation

5.5.6 Connecting controllers to the electronic
system
1 Safety thermostat for
floor-standing heating
2 24 V controller
1. Open the electronics box. (→ Page 13)
2. Carry out the wiring. (→ Page 13)
3. Connect the individual components depending on the
type of installation.
Conditions: If installing a multi-circuit controller.
▶
Change the pump's operating mode d.18 from Eco (in-
termittently operating pump) to Comfort (continuously
operating pump).
Conditions: When connecting a controller (230 V).
L
▶
Connect the controller to the main plug.
▶
Remove the bridge from the plug 24V=RT.
Conditions: 230 V 3-wire connection
▶
Ensure that the controller is designed for a maximum
rated current of 7 A.
▶
Connect the controller to the main plug X1.
– Terminal assignment: L ‑ line, N ‑ neutral conductor,
‑ earth
▶
Draw the operator's attention to the fact that the follow-
ing features are present with this type of installation.
◁
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-
14
24 V BUS
– +
Burner 24V=
off
RT BUS
1 2 3
X2
X41
X22
4
3 eBUS controller or radio
receiver unit
4 Outside temperature
sensor, wired
X1
N
RT
230V~
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.
6 Operation
6.1

Operating concept

The operating concept and the display and setting facilities
of the operator level are described in the operating instruc-
tions.
An overview of the display and setting options in the installer
level can be found in the section "Overview of the installer
level". (→ Page 14)
6.2

Installer level overview

Installation and maintenance instructions ecoFIT pure 0020230531_01
S.31
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