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General| Model | VUW 286/7-2 (H-GB) |
|---|---|
| Category | Boiler |
| Brand | Vaillant |
| Type | Combi |
| Fuel Type | Natural Gas |
| Max Heat Output | 28 kW |
| Min Heat Output | 5.7 kW |
| DHW Output | 28 kW |
| ErP Efficiency Class (Heating) | A |
| ErP Efficiency Class (DHW) | A |
| Dimensions (H x W x D) | 720 x 440 x 338 mm |
| Warranty | 2 years |
| Operating Pressure | 3 bar |
| Weight | 36 kg |
Defines the product's intended use and prohibited improper uses.
Specifies the required qualifications for personnel performing work on the product.
Provides essential safety information to prevent death, injury, or damage.
Hazards associated with flue gases and actions to take if detected.
Safety precautions for electrical work, including shock prevention.
Safety advice regarding the product's weight during transport.
Warnings about using the product near explosive or flammable materials.
Safety measures to prevent burns and material damage from high temperatures.
Risks and precautions related to heating water quality.
Requirements for neutralising condensate to prevent environmental contamination.
Measures to prevent material damage due to frost.
Importance of installing necessary safety devices in the installation.
Hazards of liquid gas accumulation and explosion risk.
Requirement to observe national regulations, standards, directives, and laws.
Requirement to observe national regulations, standards, directives, and laws.
Instructions to observe enclosed documents and store them for future use.
Overview of the product's features, markings, and energy efficiency endorsements.
Indicates compliance with basic requirements of applicable directives.
Information on energy-efficient products and their benefits.
Details found on the product's identification plate and their meanings.
Location of the product's serial number for identification.
Identification of the product's functional elements and components.
Diagram and list of key functional components within the product.
Details on built-in safety features and their functions.
How the product behaves during and after an electrical supply interruption.
The product's automatic shutdown mechanism for overheating.
Operation of the frost protection device to prevent freezing.
Safety feature that stops the product if the condensate drain is blocked.
Verifying that all delivered components are present and intact.
List of items included in the product's delivery package.
Provides overall product dimensions and connection point details.
Guidelines for selecting a suitable and safe location for product installation.
Specifies required clearances around the product for safety and maintenance.
Information regarding ventilation requirements for installed compartments.
Requirements and regulations for installing the air/flue pipe system.
Specifies safe and compliant positioning for air/flue terminals.
Table detailing site-specific dimensions for flue terminal placement.
Recommendations for horizontal flue terminal placement to avoid nuisance.
Describes different flue configuration types and their installation.
Specifics for horizontal concentric flue installation.
Guidelines for installing terminal guards for safety.
Specifics for vertical concentric flue installation.
How to use the template for accurate hole drilling and breakthroughs.
Steps and considerations for securely mounting the product to a wall.
Procedure for safely removing and refitting the product's front casing.
Procedure for removing and refitting the product's side section.
Key checks and component installations before main product setup.
How to check the product's preset gas group against site conditions.
Procedure for purging the liquid gas tank to prevent ignition issues.
Importance of using the correct gas type to avoid faults and noise.
Recommendation to descale water as needed due to temperature effects.
Verifying the gas type for optimal combustion quality.
Connecting gas and water pipes according to standards and performing checks.
Guidelines for connecting the condensate discharge pipe and local regulations.
Method for direct connection to internal soil and vent stacks.
Method for direct connection to external soil and vent stacks.
Best practice for terminating condensate externally into a gulley or hopper.
Method for internal termination into a combined sink waste system.
Method for external termination of condensate into a soakaway.
Method for internal termination downstream of sink waste.
Method for external termination into a rain water down pipe.
Techniques for introducing air breaks into the condensate system.
Preferred option for connecting a condensate pump externally.
Steps for correctly installing the discharge pipe for the expansion relief valve.
Instructions and considerations for installing the air/flue pipe system.
Guidance on installing and connecting the air/flue pipe according to instructions.
Procedures for replacing the air/flue pipe connection piece.
Steps for removing the factory-fitted air/flue pipe connection piece.
Steps for installing the alternative 80/125 mm air/flue pipe connection.
Critical safety information and procedures for electrical installation.
Instructions for safely opening the product's electronics box.
Guidance on routing cables correctly through the grommet and into the product.
Safety precautions and best practices for connecting cables.
Requirements for connecting the power supply, including isolation and voltage.
How to connect external controls like thermostats and sensors to the electronics.
Steps for connecting additional components using a multi-functional module.
Explanation of the product's operating concept and display features.
Overview of the display and setting options available in the installer level.
Procedure for accessing the installer level, requiring competent person status.
How to use diagnostics codes to adapt the product to installation requirements.
Step-by-step guide to setting specific diagnostic codes.
How to view the product's current operating status codes.
Accessing the live monitor to view status codes and installation info.
Activating various check programmes for special functions.
Procedure to access and select available check programmes.
Instructions for initial start-up using the Benchmark Checklist.
Critical steps for checking and treating heating and supplementary water quality.
Procedure for correctly filling the condensate siphon.
Basic operation for switching the product on and off.
Actions to take if low water pressure is detected, including fault codes.
Steps for flushing the heating installation with cold water.
Process for filling and purging the heating installation.
Steps for filling and checking the hot water circuit for leaks.
Procedures for checking and ensuring the correct gas setting.
Verifying flue integrity and checking for flue gas recirculation.
How to check and verify the gas flow rate against specifications.
Checking gas inlet working pressure at the reference test point.
Measuring and comparing CO2 content for proper combustion.
Process for flushing the heating installation with hot water after initial setup.
Accessing and setting diagnostic codes for product adaptation.
Adjusting settings to prevent frequent burner cycling and save energy.
How to set the maximum duration the burner remains off after switching off.
Procedure for resetting the burner anti-cycling timer.
Configuring the product's maximum heating output, either automatically or fixed.
Setting reminders for required product maintenance based on operating hours.
Adjusting the speed-regulated pump's output for optimal heating system performance.
Guidance on setting the bypass to avoid incorrect product operation.
How to set the domestic hot water temperature and legionella prevention measures.
Completing the Service Interval Record as part of the Benchmark Checklist.
Importance of using only original seals when replacing components.
Requirements for annual inspection, including visual checks and flue gas measurement.
Steps to take before starting any maintenance work on the product.
Procedure for checking CO2 content during maintenance.
Adjusting the CO2 content to ensure correct combustion.
Steps for safely removing the compact thermal module.
Instructions for cleaning the heat exchanger and its components.
How to check the burner for damage and replace seals.
Procedure for cleaning the condensate siphon.
Instructions for cleaning the strainer in the cold water inlet.
Steps for removing and cleaning the heating filter.
Procedure for installing the compact thermal module.
Steps for draining the product to facilitate component replacement or cleaning.
How to check and adjust the expansion vessel's pre-charge pressure.
Final checks and documentation required after maintenance.
Performing a leak-tightness test on the product after maintenance.
How to check for service messages and their meaning.
Advice on rectifying faults using fault codes and check programmes.
Procedure for accessing and viewing stored fault codes.
Steps to clear the stored fault memory using diagnostic codes.
Restoring product settings to their original factory defaults.
Essential preparation steps before undertaking any repair work.
Recommendations for using original, certified spare parts for repairs.
Procedures for replacing various defective components within the product.
Step-by-step guide for replacing the product's burner.
Instructions for replacing the fan or gas valve assembly.
Procedure for safely removing and installing a new heat exchanger.
Steps for replacing the expansion vessel, including pressure checks.
Instructions for replacing the main Printed Circuit Board (PCB).
Procedure for replacing the PCB related to the user interface.
Steps for removing and replacing the expansion relief valve.
Procedure for replacing the volume flow sensor.
Instructions for removing and installing a new pressure sensor.
Guidelines for replacing the power supply cable, emphasizing qualified personnel.
Final steps after completing repair work, including checks and reassembly.
Steps for permanently taking the product out of service.
Information on the correct disposal of packaging and the product.
Table detailing required inspection and maintenance tasks and intervals.
Summary of available check programmes and their functions.
Comprehensive list of diagnostic codes and their parameters.
A list of status codes indicating the product's current operating conditions.
A detailed list of fault codes, their meanings, and possible causes.
Wiring diagram for VUW 246/7-2 and VUW 286/7-2 models.
Wiring diagram for the VUW 346/7-2 model.
A checklist for commissioning the boiler and validating the warranty.
A visual guide to the commissioning process, including checks and procedures.
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