Do you have a question about the Worcester Greenstar Highflow 440CDi and is the answer not in the manual?
Safety precautions for gas handling, boiler operation, general safety, and materials.
Regulations and standards for appliance installation and compliance.
Detailed technical specifications for the appliance including CH, DHW, gas, flue, and electrical data.
Procedures for cleaning the central heating system before boiler installation.
Requirements for electrical and water supply connections, pressure, and hard water areas.
Instructions for electrical connections, wiring, and safety precautions for the appliance.
Essential checks to be performed before commissioning the boiler and system.
Step-by-step guide for starting the boiler, setting controls, and checking gas pressure.
Final steps for commissioning, handover, and customer instructions.
Procedures for routine inspection and servicing of the boiler for continued efficiency.
Information on replacing various internal components like sensors, valves, and heat exchangers.
Procedure for setting the appliance's air/gas ratio using a combustion analyser.
Table of boiler faults, conditions, and recommended actions for troubleshooting.
Safety precautions for gas handling, boiler operation, general safety, and materials.
Regulations and standards for appliance installation and compliance.
Detailed technical specifications for the appliance including CH, DHW, gas, flue, and electrical data.
Procedures for cleaning the central heating system before boiler installation.
Requirements for electrical and water supply connections, pressure, and hard water areas.
Instructions for electrical connections, wiring, and safety precautions for the appliance.
Essential checks to be performed before commissioning the boiler and system.
Step-by-step guide for starting the boiler, setting controls, and checking gas pressure.
Final steps for commissioning, handover, and customer instructions.
Procedures for routine inspection and servicing of the boiler for continued efficiency.
Information on replacing various internal components like sensors, valves, and heat exchangers.
Procedure for setting the appliance's air/gas ratio using a combustion analyser.
Table of boiler faults, conditions, and recommended actions for troubleshooting.
| Model | Greenstar Highflow 440CDi |
|---|---|
| Category | Boiler |
| Output | 40kW |
| Domestic Hot Water Output | 40kW |
| ERP Rating | A |
| Fuel Type | Natural Gas |
| Central Heating Flow Temperature Range | 30°C to 80°C |
| Warranty | 5 years |












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