Vaillant VRC 420 User Manual

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VRC 420
BEDIENUNGS- UND MONTAGEANLEITUNG
OPERATING AND INSTALLATION INSTRUCTIONS
INSTRUCTIONS DE MONTAGE ET MANUEL D'UTILISATION

Vaillant VRC 420 Specifications

General

Display	LCD
Connectivity	Wired
Temperature Range	5°C to 30°C
Power Supply	230 V AC
Mounting	Wall-mounted
Control	Manual and programmable
Communication	eBUS
Compatibility	Vaillant heating systems
Weight	200g

Summary

Operating Elements and Display

Operating Elements

Identifies controls like temperature selectors, buttons, and switches.

Display Overview

Explains the icons and information shown on the thermostat display.

Device Description

Operation

Adjusting Day Temperature

How to set the desired room temperature for different times of the day.

Energy Saving Hints

Basic Settings

Choose Operating Mode

Selecting the primary operating mode for the heating system.

Date and Time Setting

Setting Timer Programs

Special Functions

Thermal Disinfecting

Weekly automatic disinfection to prevent bacterial growth.

Error Messages

Frost Protection

Installing the Thermostat

Installation on a Wall

Steps for wall mounting the thermostat unit.

Electrical Connection

Detailed guide for connecting the thermostat wiring to the system.

External Sensor VRC 693

Fitting Location

Guidance on selecting the optimal placement for the external sensor.

Initial Start-up

Technical Specifications