Recycling and disposal ....................... 15 Recycle the packaging .......................15 WEEE: Recycle or dispose the product and its components ...........15 Guarantee and customer service ....................15 10.1 Vaillant warranty .......................15 10.2 Vaillant Service .........................15 Technical data ..........................15 - 1 -...
All electrical work performed on the equipment must be carried Symbols used out by a qualifi ed engineer or Vaillant Group Service engineer. This equipment must only be installed by a qualifi ed engineer, to The symbols used in the text are explained below: ensure that the applicable regulations and rules are adhered to.
INTRODUCTION 2.1.5 Danger of scalding due to the hot water! - complying with all of the inspection and maintenance conditions listed in the instructions. ∙ There is a danger of scalding at the hot water draw-off points It will be necessary to install the unit in a location where it will not if the hot water temperatures are higher than 60°C.
INTRODUCTION CE label - The Health and Safety at Work Act, Control of Substances Hazardous to Health (COSHH). The CE mark indicates that the products described in these - Any electrical work must conform to BS7671 and part P of the instructions are in compliance with the following directives: building regulations where applicable.
INTRODUCTION Product structure 3.2.1 onozone operation mode he Monozone operation mode is compatible with: - eBUS controllers range (VRT 392, VRT 392f, VRT 350, VRT 350f, VRC 430, VRC 430f, VRC 470, VRC 470f) ystem and open vent boiler t allows the controller to communicate with the traditional 230V zone valves and DHW storage cylinder.
Page 8
INTRODUCTION 3.2.3 Monozone mode : Open vent or system boiler with DHW cylinder, 3-Port Valve EBUS EBUS 1m min. DHW cylinder with NTC DHW cylinder with thermostat CYL. CYL. 230V~ 230V~ Room thermostat 3-port valve electrical connections: System boiler 3-port valve ∙...
Page 9
INTRODUCTION 3.2.4 Monozone mode : Open vent or system boiler with DHW cylinder : two 2-Port Valves EBUS EBUS 1m min. DHW cylinder with NTC DHW cylinder with thermostat CYL. CYL. 230V~ 230V~ Room thermostat System boiler DHW valve - 2-port valve Heating 2-port valve Boiler circuit return Electrical supply...
Page 10
INTRODUCTION 3.2.5 Multizone operation mode The Multizone operation mode is compatible with: - VRT350 - system, combi and open vent boiler The information about the heating or hot water demand is sent to the room thermostat via the control unit to the boiler. The VR66 then decides if the hot water demand needs to be fulfi...
Page 11
INTRODUCTION 3.2.6 Multizone mode : Open vent or system boiler with DHW cylinder EBUS EBUS EBUS 1m min. DHW cylinder with NTC DHW cylinder with thermostat 230V~ CYL. 230V~ CYL. VRT350 room thermostat "zone 1" 12 Domestic hot water cylinder Open vent or system boiler 13 Cylinder thermostat VRT350 room thermostat "zone 2"...
Page 12
INTRODUCTION 3.2.7 Multizone mode with combi boiler EBUS EBUS EBUS 230V~ CYL. VRT350 thermostat "zone 1" Combi boiler VRT350 thermostat "zone 2" Boiler circuit return Connection block (not supplied) Boiler circuit fl ow Heating zone 2- 2-port valve Cold water supply Heating zone 1- 2-port valve Domestic hot water outlet Electrical supply...
The data plate certifi es the country where the product is intended to be installed. The data plate contains the following data: Abreviation/symbol Description 1 5 0 Brand and Product name Vaillant VR66 Model Product article number V/Hz Voltage / Frequency Temperature range Serial-no...
INSTALLATION 4.2.2 Wall-mounting of the product appliance earthing. This includes failure to comply with current standards. The control unit is designed to be attached to a wall near the main tank inside a dwelling. Caution! These pipes can become very hot which will damage the cables or the system.
INSTALLATION Venting 24V connectors (low voltage) 5.2.1 Boiler Commission the boiler according to the instructions of its installation manual. 230V~ CYL. ∙ Refer to the installer manual. 5.2.2 Heating circuit adjustement Venting of the heating circuit enables the purging of any air in the heating circuit (valves still manually opened).
MAINTENANCE User information Fault Possible cause Solution Green LED No 230 V power supply Check that the main At the end of the installation, the installer must: permanently off or the fuse in the voltage cable is appliance is faulty connected correctly.
∙ Recycle or dispose the product and its components (see in accordance with the Vaillant terms and conditions. All requests chapter 9). for work during the guarantee period must be made to Vaillant Service Solutions (0870 6060 777). Recycling and disposal 10.2...
Need help?
Do you have a question about the VR 66 and is the answer not in the manual?
Questions and answers