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Upgrade nowTypes of Chimney & Flue Systems
Read through the material below, then test your understanding.
Module Lessons
Domestic Fuel Systems, Combustion & Flues
Fuel Properties: Gas, LPG & Solid Fuel
Fuel Properties: Oil & Low-Carbon Alternatives
Storing Oil, Coal & LPG
Storing Biomass & General Fuel Storage
Fuel Delivery & Distribution
Complete & Incomplete Combustion
Carbon Monoxide Poisoning
Combustion & Ventilation Air Requirements
Ventilation Categories & Calculations
Ventilation for Open-Flued & Room-Sealed Appliances
Flueless Appliance Ventilation Calculations
Types of Chimney & Flue Systems
Open Flues & Flexible Liners
Flue Terminals & Builder's Openings
Terminal Guards, Flue Blocks & Ridge Terminals
Room-Sealed (Balanced) Flues
Effective Height & Flue Routing
Flue Temperature, Condensation & Termination
Class 1 & Class 2 Flue Construction
Rigid & Flexible Metallic Flue Systems
Flue Testing Procedures
Flue Gas Analysis
Lesson Overview
Chimney and flue systems safely expel combustion products to the outside atmosphere while maintaining airflow for combustion. This lesson explores appliance flue classifications, natural draught principles, and fanned or shared chimney layouts.
Learning Objectives
Identify the three primary gas appliance flue classifications: Types A, B, and C.
Explain the European numerical designation system denoting draught type and fan position.
Explain the physical principles governing natural chimney updraught and shared duct installations.
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