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General| Model | GREENSTAR 28i junior |
|---|---|
| Category | Boiler |
| Output | 28 kW |
| Type | Combi |
| Domestic Hot Water Output | 28 kW |
| ERP Rating | A |
| Fuel Type | Natural Gas |
| Hot Water Flow Rate at 35°C Rise | 11.4 l/min |
| Maximum Working Pressure | 3 bar |
| Warranty | 5 years |
| Dimensions | 700mm x 400mm x 330mm |
| Central Heating Flow Temperature Range | 30°C - 80°C |
Essential safety measures and warnings before installation and operation.
Compliance requirements for installing gas appliances.
Overview of the boiler model and its capabilities.
List of items included in the package and boiler specifications.
Detailed specifications, performance figures, and dimensions for the boiler.
Diagram and identification of the boiler's internal parts and connections.
Procedure for flushing and cleaning the heating system before boiler installation.
Guidelines for electrical and gas supply connections.
Pipework requirements for central heating and domestic hot water systems.
Installation guidelines for the condensate drainage pipe.
Requirements for the pressure relief valve discharge pipe.
Specifications for safe boiler placement and necessary clearances.
Details on connecting heating, DHW, and gas pipes to the boiler.
Available flue configurations and their maximum lengths.
Safety clearances and positioning guidelines for the flue terminal.
Steps for unpacking and identifying installation accessories.
Using the template to mark and drill for the wall frame and flue.
Instructions for safely removing the boiler from its packaging.
Detailed steps for connecting heating, water, and gas services.
Guidance on fitting the flue assembly and its components.
How to connect the condensate pipework and syphon.
Wiring instructions for mains supply, room stats, and programmers.
Diagram showing the location of key electrical components and wiring.
Essential checks before starting the commissioning process.
Step-by-step guide to filling the heating system and venting air.
Instructions for powering on and initial operation of the boiler.
Procedures for system flushing and adding inhibitor for protection.
Setting the boiler to maximum, checking gas pressure, and DHW control.
Final steps to complete the commissioning process.
Demonstrating operation and providing documentation to the user.
Routine checks and maintenance procedures for the boiler.
Detailed instructions for replacing various boiler components.
Procedure for adjusting the air and gas mixture for optimal combustion.
A quick reference list of common replacement parts with part numbers.
Steps for converting the boiler to use Liquid Petroleum Gas (LPG).
Table of faults, indicators, and possible solutions for troubleshooting.
Diagram illustrating the sequence of operations for central heating.
Diagram showing the sequence for domestic hot water and preheat modes.
Explanation of the boiler's safety and protection mechanisms.
Checks for issues related to central heating not working.
Checks for issues preventing domestic hot water supply.
Diagnosing problems where the burner lights then goes out.
Basic checks for gas supply, water system, electricals, and pressure.
