Vaillant VRT 392 Operating And Installation Manual

Contents

Vaillant VRT 392 Operating And Installation Manual Manual pdf 25 page image

5Installation Instructions VRT 3924.4 Wall-mounting1254 3Fig. 4.1 Fitting the VRT 392Key1 VRT 392 room thermostat2 Wall socket3 Fixing apertures4 Apertures for cable entry5 Terminals for eBUS line and plug connection socket for pin railThis is how to do it:⇒ Pull the room thermostat (1) off the wall socket (2).Insert a screwdriver into the two retainer straps todo this (see Fig. 4.1 arrows).⇒ Mark the suitable location on the wall. Observe thecable run for the eBUS line.⇒ Drill two holes 6 mm diameter corresponding to thefixing apertures (3).⇒ Insert the plugs provided.⇒ Insert the eBUS cable through one of the cableentry points (4).⇒ Fix the wall socket with the screws provided.⇒ Electrical installation is described in Chapter 5.1.⇒ Carefully push the thermostat onto the wall socketuntil it clicks in position. The pin rail on the back ofthe thermostat must fit into the plug connection (5)provided on the wall socket.5 Installatione Danger!Connections carrying voltage!There is a danger to life from electric shockwhen working in the switch box of the boiler.Switch off the power supply to the switch boxof the boiler and secure against re-connectionbefore carrying out any work.Only open the switch box if the boiler ispotential free.12Fig. 5.1 Electrical connection of the VRT 392Key1 Terminal rail VRT 3922 Terminal rail boilerThis is how to do it:⇒ Connect the eBUS cable to the terminal rail on theVRT 392.⇒ Connect the eBUS cable to the terminal rail on theboiler.h Note!Do not remove the jumper between terminals 3and 4 (Fig. 5.1).When connecting the eBUS cable there is noneed to observe the correct polarity.Communication is not adversely affected byswapping the two connections over.Assembly 4Installation 5