Faults ..............24 5 Terminal" ............10 Decommissioning..........26 Connect the controller to the boiler with a 11.1 Replacing the controller ........26 "24V=RT terminal" ..........11 11.2 Recycling and disposal ........26 Customer service..........26 0020131957_01 VRT 350 Installation instructions...
During installation, you must observe all the installation instructions for the assemblies and components of the system. These installation instructions are enclosed with the various system parts and supplementary components. ▶ Furthermore, observe all operating instructions enclosed with components of the system. Installation instructions VRT 350 0020131957_01...
The installation, assembly and removal, start-up, mainten- a risk of death from electric shock. Continuous voltage is ance, repair and decommissioning of Vaillant products and present on the mains connection terminals, even if the main accessories must only be carried out by authorised compet- switch is turned off.
▶ Install the controller in a location where it is not covered The controller controls a heating installation with a Vaillant by furniture, curtains, or other objects. heater with eBUS interface in a way that is room-controlled ▶...
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Safety 2 – observance of accompanying operating, installation and servicing instructions for the Vaillant product as well as for other parts and components of the system – compliance with all inspection and maintenance condi- tions listed in the instructions. 0020131957_01 VRT 350 Installation instructions...
Operating voltage Current consumption CE label Unit complies with European standards and directives Waste container Proper disposal of the unit Scope of delivery Quant- Component Controller Fastening material (2 bolts and 2 wall plugs) Operating instructions Installation instructions VRT 350 0020131957_01...
VR 66 Control Centre. Wall-mounting base Pin header with terminals for the eBUS line Mounting holes Slot for screwdriver Mark the position on the wall. Take the eBUS line route into account when doing so. 0020131957_01 VRT 350 Installation instructions...
3 and 4 on the PCB of the electronics box and, if re- quired, install the bridge between terminals 3 and 4. Connect the eBUS line to the terminal block (1) in the wall-mounting base of the controller. Installation instructions VRT 350 0020131957_01...
Controller terminal block Boiler terminal block Check whether the bridge is installed between the 24 V=RT terminals on the PCB of the electronics box and, if required, install the bridge between the 24 V=RT ter- minals. 0020131957_01 VRT 350 Installation instructions...
3 and 4 on the PCB of the electronics box and, if re- quired, install the bridge between terminals 3 and 4. Connect the eBUS line to the terminal block (1) in the wall-mounting base of the controller. Installation instructions VRT 350 0020131957_01...
Controller terminal block Boiler terminal block Check whether the bridge is installed between the 24 V=RT terminals on the PCB of the electronics box and, if required, install the bridge between the 24 V=RT ter- minals. 0020131957_01 VRT 350 Installation instructions...
All settings that you have made using the installation assist- ant can be changed again at a later time via the access level for the system operator Installer level. The read-out and set- Installation instructions VRT 350 0020131957_01...
1) Appears only if the value Analogue is set for the control strategy. 2) Appears only if a VR 66 is connected. 3) Appears only in the display of the main controller with Zone 1 selected. 0020131957_01 VRT 350 Installation instructions...
The setting and read-out options for the operator, the oper- ating concept and an operating example are described in the operating instructions for the controller. Installation instructions VRT 350 0020131957_01...
1) Appears only if the value Analogue is set for the control type. If the VR 66 is connected, the functions shown in italics are only available for Zone 1 and these are only shown in the display for the main controller. 0020131957_01 VRT 350 Installation instructions...
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1) Appears only if the value Analogue is set for the control type. If the VR 66 is connected, the functions shown in italics are only available for Zone 1 and these are only shown in the display for the main controller. Installation instructions VRT 350 0020131957_01...
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1) Appears only if the value Analogue is set for the control type. If the VR 66 is connected, the functions shown in italics are only available for Zone 1 and these are only shown in the display for the main controller. 0020131957_01 VRT 350 Installation instructions...
If there is a fault, the status "Fault" is displayed. If 9.1.2 Entering the service date you press the right selector button the list of error mes- sages (→ Page 24) is displayed. Menu → Installer level → Service information → Service date Installation instructions VRT 350 0020131957_01...
--] → VF1 control: – This function allows you to read the current value of tem- – Two-point corresponds to an On/Off control system perature sensor VF1. – Analogue corresponds to a modulating control system 0020131957_01 VRT 350 Installation instructions...
Menu → Installer level → System configuration [Domestic heating is to be reduced at times of low heat demand (e.g. hot water ----] → Cylinder overnight). – Select this function to specify whether a cylinder is con- nected: Active: Cylinder connected Installation instructions VRT 350 0020131957_01...
You can use this function to read the measured cylinder temperature. Changing the code for Installer level Menu → Installer level → Change code – This function allows you to change the access code for the "Installer level" operating level. 0020131957_01 VRT 350 Installation instructions...
The power is switched off/on at the heater – Check the power supply for the heater – No changes in the display via the rotary Unit fault The power is switched off/on at the knob heater Installation instructions VRT 350 0020131957_01...
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Rectifying faults 10 Fault Cause Remedy – No changes in the display via the selector Unit fault The power is switched off/on at the buttons heater 0020131957_01 VRT 350 Installation instructions...
▶ In this case, make sure that the Vaillant unit and any ac- Disconnect the power supply to the boiler. cessories are properly disposed of at the end of their use- Disconnect the boiler from the power mains by pulling ful life.
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Customer service 12 Please contact Vaillant Service Solutions for further details: 0330 100 3461 0020131957_01 VRT 350 Installation instructions...
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