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Upgrade nowDischarge Pipework: Sizing & Termination
Read through the material below, then test your understanding.
Module Lessons
Hot Water Systems: Planning & Design
Fuels Used in Hot Water Systems
Open Vented Storage Systems
Unvented Storage Systems
Localised Water Heaters
Unvented System Pressures
Secondary Circulation Systems
Hot Water Safety Controls
Functional Controls: Strainers & PRVs
Expansion Devices & Check Valves
Pressure Relief, Tundish & Composite Valves
Discharge Pipework: Sizing & Termination
Design Information Sources
Sizing Cisterns & Storage Vessels
Hot Water Pipework Sizing
Sizing Circulation & Boosting Pumps
Sizing Expansion Vessels & Presenting Designs
Installing Unvented Hot Water Systems
Testing & Commissioning Hot Water Systems
Diagnosing Hot Water System Faults
Component Fault-Finding: Pumps, Vessels & Thermostats
Servicing & Maintaining Hot Water Systems
Lesson Overview
This lesson covers the regulatory sizing, layout, and termination requirements for unvented hot water storage system discharge pipework under Building Regulations Approved Document G3.
Learning Objectives
Determine correct dimensions and gradients for D1, tundish, and D2 pipework arrangements.
Calculate equivalent pipe lengths and size D2 discharge pipework using resistance data.
Identify compliant and safe termination methods for high-temperature discharge water.
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