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General| Type | Control Unit |
|---|---|
| Model | VR 66/2 |
| Manufacturer | Vaillant |
| Voltage | 230 V |
| Frequency | 50 Hz |
| Protection Class | IP20 |
| Storage Temperature | -20°C to +60°C |
| Weight | 0.2 kg |
| Operating Temperature | 0°C to +50°C |
Explains symbols used in the manual for clarity and safety.
Highlights the importance of following all related installation and operating instructions.
Instructs to pass documents to the user for future reference.
Defines the specific scope and applicability of these installation instructions.
Provides crucial general safety guidelines for installation and operation.
Warns about the severe risks of electric shock during installation and maintenance.
Details dangers associated with gas leakages and potential explosions due to incorrect installation.
Alerts to risks from flue gas escape through openings in the flue pipe system.
Emphasizes risks from absent or malfunctioning safety devices, leading to severe injuries.
Warns about the risk of scalding from hot water at draw-off points, especially for vulnerable persons.
Highlights risks of damage and injury from non-professional work on the product.
Explains potential material damage from unsuitable additives in heating water systems.
Details risks of damage and leaks caused by using incorrect tools or improper techniques.
Addresses risks of structural damage resulting from water leakages due to incorrect installation.
Defines the specific purpose and intended application of the control centre.
Outlines the legal, statutory, and regulatory requirements for installation.
Details statutory obligations and building regulations applicable to the installation.
Specifies regulations pertinent to domestic hot water circuits and connections.
Covers regulations and standards related to the electrical supply and wiring.
Explains the meaning and compliance indicated by the CE mark on the product.
Provides a general introduction to the control centre's system capabilities and functions.
Details the internal components and operational modes of the control centre.
Describes the functionality and compatibility of the monozone operation mode.
Explains the priority levels for hot water and heating in monozone mode.
Illustrates the monozone setup with a system boiler and a 3-port DHW valve.
Shows the monozone configuration with a system boiler and two 2-port valves.
Details the multizone operation mode, its compatibility, and priorities.
Depicts the multizone system setup with a boiler and DHW cylinder.
Illustrates the multizone configuration when used with a combi boiler.
Identifies the product's model, serial number, and other designation details.
Explains the information provided on the product's data plate.
Outlines the necessary preparations before installing the control centre.
Guides on selecting an appropriate and safe location for the control centre.
Provides instructions on how to physically mount the control centre.
Details the steps required to open the control centre housing for installation.
Explains the procedure for securely mounting the control centre onto a wall.
Covers the essential steps and precautions for the electrical connection.
Describes the various internal connections and their purposes on the circuit board.
Details the specific connections to the main electronic board, including low voltage terminals.
Guides on the filling process for the heating system and boiler.
Instructions for filling the boiler as part of the commissioning process.
Steps for filling and preparing the heating circuit.
Explains how to vent air from the boiler and heating circuits.
Procedure for venting the boiler during commissioning.
Steps for purging air from the heating circuit.
Provides the correct sequence for powering up the system components.
Details adjustments required for multizone configurations and room thermostat pairing.
Outlines procedures for system restart, functional checks, and safety verification.
Summarizes installer's responsibilities for informing the user about operation and safety.
Offers guidance on diagnosing and resolving common faults and issues.
Provides a systematic approach to identifying the root causes of system faults.
Gives specific safety instructions regarding the main supply cable.
Details the steps for safely shutting down and removing the product.
Instructions for sorting and recycling product packaging materials.
Covers the proper disposal and recycling of the product under WEEE regulations.
Explains the conditions and requirements for the manufacturer's warranty.
Recommends regular servicing and provides contact information for Vaillant Service.
Lists the technical specifications, dimensions, and ratings of the control centre.
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