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Upgrade nowDischarge Pipework (D1/D2)
Read through the material below, then test your understanding.
Module Lessons
Hot Water
Hot Water Legislation and Standards
System Selection Factors
Open Vented Hot Water Systems
Hot Water Storage Cylinders
Combination and Quick Recovery Cylinders
Unvented Hot Water Systems
Localised Hot Water Systems
Hot Water Safety Controls
Discharge Pipework (D1/D2)
Decommissioning Hot Water Systems
Thermostatic Mixing Valves (TMVs)
Installing Shower Mixing Valves
Replacing Hot Water Components
Expansion of Hot Water Pipework
Testing and Inspecting Hot Water Systems
Hot Water System Fault Finding
Maintenance and Component Replacement
Lesson Overview
Safety discharge pipework safely directs boiling water and steam away from unvented hot water cylinders during an emergency. This lesson covers the strict rules for sizing, routing, and terminating D1 and D2 discharge pipework.
Learning Objectives
Explain the function and installation requirements of the tundish and D1 pipework
Identify the sizing, gradient, and material requirements for D2 discharge pipes
Describe the approved termination methods for discharge pipework under Building Regulations Part G
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