Do you have a question about the Vaillant ecoTEC plus VUI Series and is the answer not in the manual?
Details the specific applications and limitations for the product's intended use.
Specifies the required training and competence for installation and maintenance personnel.
Safety precautions to take when dealing with gas, including leak detection and ventilation.
Safety measures related to flue gases, including poisoning and burn risks, and how to respond to leaks.
Critical safety steps for electrical work, including disconnection and voltage checks.
Precautions related to high temperatures to prevent burns and material damage.
Advises adherence to regulations and directs to relevant standards for Great Britain and Ireland.
Information on registering the appliance for its guarantee and recommended annual servicing.
Provides general specifications for the boiler, including dimensions, weight, and approvals.
Details gas connection pressure, emissions, efficiency, and heat output ranges.
Lists technical data for heating, domestic hot water, and electrical components.
Explains CE/UKCA markings, Hot Water Association membership, and data plates.
Instructions to check delivered items and physical dimensions of the product.
Guidance on suitable installation locations and required minimum clearances for safety and access.
Details on compartment ventilation, using the mounting template, and wall-mounting procedures.
Covers essential prerequisites like gas supply, correct gas type, basic preparation, pressure maintenance, and water softening.
Instructions for installing the air/flue pipe, including configuration, terminal positioning, and connectors.
Procedures for connecting the gas supply, shift-load cylinder, and hot/cold water.
Steps for connecting heating flow/return, installing the condensate discharge, and system disposal.
Detailed guide for qualified electricians on safe electrical installation, wet rooms, casing removal, and connections.
Overview of operational concepts and how to access the installer level and diagnostics codes.
Instructions for running check programmes, actuator tests, and accessing data/status codes.
Procedures for performing combustion analysis (chimney sweep mode) and enabling the button lock.
Essential checklist before commissioning and detailed steps for the initial start-up procedure.
Crucial checks for heating and supplementary water quality, plus filling and purging the heating and DHW systems.
Using the installation assistant to set language, time, hydraulic mode, gas type, and air/flue pipe.
Procedures for guaranteeing system pressure and checking gas settings, including flow rates and O2 content.
Adjusting general parameters, heat input, and flow temperature to suit the heating system.
Configuring heating pump modes, overrun, and burner anti-cycling times for optimal performance.
Adapting domestic hot water temperature and configuring solar thermal post-heating.
Final steps for commissioning, user handover, safety explanations, and documentation.
Guidelines for completing service records and setting maintenance intervals.
Procedures for inspecting and cleaning various components, including the thermal module, heat exchanger, and burner.
Instructions for draining the product and checking expansion vessel pressures.
Final steps for completing maintenance, including test operations and record completion.
Guides on checking data overview, service messages, fault messages, and limp home modes.
Comprehensive instructions for replacing various components, including preparation, parts procurement, and specific replacement procedures.
How to activate standby mode and temporarily take the product out of service.
Steps for permanently decommissioning the product and disposing of its packaging.
Details the specific applications and limitations for the product's intended use.
Specifies the required training and competence for installation and maintenance personnel.
Safety precautions to take when dealing with gas, including leak detection and ventilation.
Safety measures related to flue gases, including poisoning and burn risks, and how to respond to leaks.
Critical safety steps for electrical work, including disconnection and voltage checks.
Precautions related to high temperatures to prevent burns and material damage.
Advises adherence to regulations and directs to relevant standards for Great Britain and Ireland.
Information on registering the appliance for its guarantee and recommended annual servicing.
Provides general specifications for the boiler, including dimensions, weight, and approvals.
Details gas connection pressure, emissions, efficiency, and heat output ranges.
Lists technical data for heating, domestic hot water, and electrical components.
Explains CE/UKCA markings, Hot Water Association membership, and data plates.
Instructions to check delivered items and physical dimensions of the product.
Guidance on suitable installation locations and required minimum clearances for safety and access.
Details on compartment ventilation, using the mounting template, and wall-mounting procedures.
Covers essential prerequisites like gas supply, correct gas type, basic preparation, pressure maintenance, and water softening.
Instructions for installing the air/flue pipe, including configuration, terminal positioning, and connectors.
Procedures for connecting the gas supply, shift-load cylinder, and hot/cold water.
Steps for connecting heating flow/return, installing the condensate discharge, and system disposal.
Detailed guide for qualified electricians on safe electrical installation, wet rooms, casing removal, and connections.
Overview of operational concepts and how to access the installer level and diagnostics codes.
Instructions for running check programmes, actuator tests, and accessing data/status codes.
Procedures for performing combustion analysis (chimney sweep mode) and enabling the button lock.
Essential checklist before commissioning and detailed steps for the initial start-up procedure.
Crucial checks for heating and supplementary water quality, plus filling and purging the heating and DHW systems.
Using the installation assistant to set language, time, hydraulic mode, gas type, and air/flue pipe.
Procedures for guaranteeing system pressure and checking gas settings, including flow rates and O2 content.
Adjusting general parameters, heat input, and flow temperature to suit the heating system.
Configuring heating pump modes, overrun, and burner anti-cycling times for optimal performance.
Adapting domestic hot water temperature and configuring solar thermal post-heating.
Final steps for commissioning, user handover, safety explanations, and documentation.
Guidelines for completing service records and setting maintenance intervals.
Procedures for inspecting and cleaning various components, including the thermal module, heat exchanger, and burner.
Instructions for draining the product and checking expansion vessel pressures.
Final steps for completing maintenance, including test operations and record completion.
Guides on checking data overview, service messages, fault messages, and limp home modes.
Comprehensive instructions for replacing various components, including preparation, parts procurement, and specific replacement procedures.
How to activate standby mode and temporarily take the product out of service.
Steps for permanently decommissioning the product and disposing of its packaging.











