Operation; Operating Concept; Calling Up The Installer Level; Live Monitor (Status Codes) - Vaillant ecoTEC exclusive 843 Installation And Maintenance Instructions Manual

6 Operation

4. When starting up in the installation assistant or retro-
actively via diagnostics code D.087, set the correct gas
type.
5.9.7 Connecting additional components
You can actuate an additional component with the aid of the
auxiliary relay that is installed, and you can actuate two other
components with the multi-functional module.
5.9.7.1 Using the auxiliary relay
1. Connect an additional component directly to the integ-
rated auxiliary relay using the grey plug on the PCB.
2. Carry out the wiring.
3. Activate the component via D.026, see section "Adapt-
ing to the heating installation".
5.9.7.2 Using the VR 40 ("2 in 7" multi-functional
module)
1. Install the components in accordance with the respect-
ive instructions.
Conditions: Components connected to relay 1
▶
Activate D.027, see section "Adapting to the heating
installation".
Conditions: Components connected to relay 2
▶
Activate D.028, see section "Adapting to the heating
installation".
6 Operation
6.1

Operating concept

The operating concept and the read-off and setting facilities
of the operator level are described in the operating instruc-
tions.
An overview of the reading and setting options for the in-
staller level is included in the table in the appendix.
Installer level – Overview (→ Page 34)
6.2

Calling up the installer level

1. Only call up the installer level if you are a competent
person.
2.
Press and at the same time.
Navigate to Menu → Installer level and confirm by
3.
pressing .
4.
Set the value 17 (code) and confirm by pressing
16
6.3

Live Monitor (status codes)

Menu → Live monitor
Status codes in the display provide information on the pro-
duct's current operating status.
Status codes – Overview (→ Page 41)
6.4

Setting the domestic hot water temperature

Conditions: Water hardness: > 3.57 mol/m³
▶
Set the domestic hot water temperature to a maximum
of 50 °C.
7

Start-up

7.1

Carrying out the initial start-up

Initial start-up must be carried out by a customer service
technician or an authorised competent person using the
commissioning checklist. The commissioning checklist in the
appendix (→ Page 51) of the installation instructions must be
filled in and stored carefully along with the unit's documenta-
tion.
▶
Carry out the start-up procedure using the commissioning
checklist in the appendix.
▶
Fill in and sign the commissioning checklist.
7.2

Switching the product on/off

▶
Press the on/off button on the product.
◁
The basic display appears on the display.
7.3

Running the installation assistants

The installation assistant is displayed whenever the product
is switched on until it has been successfully completed.
It provides direct access to the most important check
programmes and configuration settings for starting up the
product.
To recheck and reset the most important system parameters,
call up the Appliance config..
Menu → Installer level → Appliance config.
The settings options for more complex systems can be found
in the Diagnostics menu.
Menu → Installer level → Diagnostics menu
▶
Press to confirm the start of the installation assistant.
◁
All heating and hot water requests are blocked whilst
.
the installation assistant is active.
Note
If you do not confirm the launch of the install-
ation assistant within 10 seconds of switching
the system on, the basic display reappears.
▶
To access the next point, confirm by pressing
case.
7.3.1 Language
▶
Set the required language.
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