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General| Model | Greenstar 18Ri |
|---|---|
| Category | Boiler |
| Output | 18 kW |
| Efficiency | 89.1% |
| Fuel Type | Natural Gas |
| Type | Regular |
| Warranty | 5 years |
| Efficiency Rating | A |
| ERP Rating | A |
| Mounting | Wall-mounted |
| Gas Type | Natural Gas |
Essential safety advice, including actions to take if gas is detected.
Guidelines and standards for appliance installation, including Gas Safety and British Standards.
Overview of the boiler's standard package contents and key specifications.
Procedure for flushing and cleaning the central heating system before boiler installation.
Requirements for connecting the boiler to the mains electricity supply.
Regulations and considerations for connecting the gas supply to the boiler.
Guidance on appropriate pipe sizing for gas supply to different boiler models.
Requirements for plastic pipework and specific considerations for underfloor heating systems.
Details on system connections, valves, and radiator valve conformity.
Diagrammatic explanations of S and Y plan system layouts and components.
Information on filling and components for a fully pumped sealed central heating system.
Guidelines for routing and installing condensate pipework externally, including insulation.
Requirements for creating a condensate soakaway using specific materials and dimensions.
Instructions for fitting an external air break when condensate drains into a rainwater downpipe.
Minimum clearances required for servicing a boiler installed in a vented compartment.
Clearances needed for installation within unventilated compartments, requiring ventilation.
Minimum space requirements for installing and servicing the boiler.
Minimum space requirements for installing and servicing within unventilated compartments.
Specific installation location requirements for boilers installed in bathrooms.
Details regarding 22mm compression fittings for heating system and gas connections.
Overview of different horizontal and vertical flue systems and their maximum lengths.
Recommendations for flue terminal placement to avoid obstructions and nuisances.
Safe practices for lifting and carrying the boiler unit during installation.
Key advice for safely unpacking and handling the boiler carton and its contents.
General safety precautions to be observed before drilling or fixing.
Step-by-step guide for fixing the wall mounting frame and template.
Instructions for setting out and drilling the hole for a rear flue outlet.
Procedure for marking and drilling the hole for a side flue outlet.
Detailed steps for safely removing the outer casing of the boiler.
Guide to connecting the gas and water pipes to the boiler.
Instructions specific to the installation of horizontal 60/100mm diameter flues.
Method for measuring the flue length required for the standard flue kit.
Steps to adjust the length of the standard flue terminal.
Procedure for shortening the standard flue terminal length.
Detailed steps for installing the standard flue component.
Method for redirecting the flue discharge to manage plume visibility.
Instructions on how to correctly fit the flue elbow assembly to the boiler.
Important reminders regarding flue cutting, sealing, and angles.
Guidelines for correctly connecting the condensate drain pipe.
Steps to access the boiler's electric control panel for wiring.
Essential checks to perform before commencing the full commissioning process.
Procedures for filling the central heating system and venting air.
Steps for purging the gas supply and testing for soundness.
Instructions for safely powering up and switching the boiler on and off.
Detailed procedure for flushing the central heating system with a cleaning agent.
Guidelines for adding inhibitor to the central heating system water.
Procedure for verifying the gas inlet pressure to the boiler.
Steps to set the boiler to operate at its maximum output for testing.
Method for measuring the gas inlet pressure using a manometer.
Steps for completing the handover process, including checklists and user demonstration.
Checks to perform during a routine inspection of the boiler and flue terminal.
Instructions on how to access internal components for servicing.
Detailed steps for removing the boiler's outer casing.
Procedure to move the boiler control panel to a service-friendly position.
Information regarding cleaning and checking the primary heat exchanger.
Steps to set the boiler to maximum output for testing purposes.
Detailed instructions for cleaning the boiler's heat exchanger.
Procedure for removing the condensate syphon for cleaning or inspection.
Details on examining and flushing the condensate syphon.
Procedure for adjusting the air-to-gas ratio for optimal combustion.
Steps to measure and adjust CO/CO2 levels for the SIT 848.093 Sigma gas valve.
Steps to measure and adjust CO/CO2 levels for the Dungs GB-ND 055 D01 S20 gas valve.
Guide to accessing the boiler's control components for replacement.
Instructions for replacing the PCB fuse.
Procedure for replacing the transformer or printed circuit board.
Information on replacing SIT and Dungs gas valves.
Steps to move the boiler control to a service position.
Procedure for replacing the gas valve, including checks.
Instructions for removing and replacing the condensate syphon.
How to replace the primary temperature sensor.
Procedure for replacing the overheat thermostat.
Instructions for replacing the flue limit thermostat.
Specifics for replacing the Type B flue limit thermostat with a grommet.
Steps for removing and replacing the air/gas manifold and fan assembly.
Guide for replacing the boiler's pressure switch.
Instructions for replacing the boiler fan.
Procedure for replacing the ignition and flame sensor electrodes.
Steps for removing and replacing the boiler burner.
Instructions for removing and replacing the heat exchanger.
A list of common replacement parts with part numbers and GC numbers.
Additional regulations specific to LPG appliance conversions.
General steps for converting the appliance, including casing removal and CO2 reset.
Instructions on resetting the CO2 level after conversion.
Guidance on replacing the code plug for gas conversion.
Information to help diagnose and resolve common boiler faults based on operational indicators.
A flowchart illustrating the boiler's operational sequence and protection systems.
Checklist for verifying installation of various system controls.
Confirmation of system cleaning and compliance with regulations.
Section for recording central heating mode measurements like gas rate and temperatures.
Specific checks for combination boilers, including water scale reduction.
Section for recording domestic hot water mode measurements.
Confirmation of correct installation for condensing boiler features.
General confirmations for installation and commissioning compliance.
Fields for service engineer details and service history records.
Contact details for Worcester, Bosch Group for technical, service, and sales support.
