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General| Type | Combi |
|---|---|
| Fuel Type | Natural Gas |
| Mounting | Wall Mounted |
| Fuel | Natural Gas |
| Boiler type | Combination boiler |
General introduction to the installation and service instructions for the Ultra 2 boiler range.
Highlights the legal requirement to follow Gas Safety (Installation and Use) Regulations 1994.
Details on hazardous substances and necessary safety precautions for installation personnel.
Outlines the relevant standards, regulations, and codes of practice for boiler installation.
Specifications and checks required for the natural gas supply connection.
Details on electrical connections, power supply, and safety measures.
Recommendations and restrictions for choosing a suitable location to install the boiler.
Requirements for air supply and ventilation in the room where the boiler is installed.
Instructions for installing the standard horizontal flue system.
Guidance on connecting the boiler to the water system and isolation valves.
Specifications and considerations for installing a sealed central heating system.
Steps for unpacking the boiler and initial preparation before installation.
Overview of available flue kits for different installation configurations.
Instructions for installing the optional wall spacing kit for pipework clearance.
Step-by-step guide for installing the boiler with a rear-exit flue.
Step-by-step guide for installing the boiler with a side-exit flue.
Instructions for fitting flue extensions to achieve the required flue length.
Guide for installing the vertical balanced flue system.
Instructions for installing the optional Vertex flue system vertically.
Guide for fitting the flue kit entirely from inside the building.
Procedure for connecting the main power supply cable to the boiler.
Steps for installing the optional internal programmer accessory.
Instructions for connecting the natural gas supply to the boiler.
Procedures for connecting the water system and venting the boiler.
Detailed steps for initial boiler setup, including gas checks and ignition sequence.
Verifying the integrity and operation of the water system after installation.
Adjusting radiator valves to ensure balanced heat distribution.
Final steps for assembling the boiler's internal and external components.
Procedures for the initial ignition and operation of the boiler.
Advice for the end-user on boiler operation, controls, and frost protection.
Instructions for safely removing the boiler casing for access.
Procedures for disassembling internal boiler parts for maintenance.
Guidelines for cleaning key components like the heat exchanger and burner.
Steps for correctly reassembling the boiler after maintenance.
Steps to gain access to internal components for part replacement.
Detailed instructions for replacing the main gas valve.
Instructions for replacing the gas valve solenoids.
Procedures for replacing the boiler's pump or pump head.
Guide for replacing the air pressure switch.
Steps for replacing the diverter valve head on DV models.
Instructions for replacing the system pressure gauge.
Procedure for replacing the pressure relief valve.
Instructions for replacing the system by-pass valve.
Detailed steps for replacing the ignition circuit board.
Instructions for replacing the reset button and neon indicator assembly.
Guide for fitting or replacing the optional internal programmer.
Instructions for replacing the test switch on the control panel.
Procedure for replacing the overheat thermostat.
Steps for replacing the spark electrode and its lead.
Procedures for replacing the main burner, pilot burner, and injectors.
Instructions for replacing the boiler's fan assembly.
Guide for replacing insulation panels in the combustion chamber.
Steps for replacing the boiler's main thermostat.
Detailed procedure for replacing the heat exchanger.
Instructions for removing and replacing the expansion vessel.
Diagram showing the functional flow of signals within the boiler control system.
Troubleshooting steps for initial electrical checks and ignition sequence.
Diagnostic steps for pilot light and gas supply problems.
Troubleshooting steps for main burner, pump, and thermostat related problems.
Diagnostic steps for system operation and heat distribution issues.
