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Read through the material below, then test your understanding.
Module Lessons
Cold Water
Incoming Mains: Communication vs. Supply Pipes
Installation Depths and Building Entry
Direct Cold Water Systems
Indirect Cold Water Systems
Siting and Installing Storage Cisterns
Float-Operated Valves and Overflows
Principles of Backflow
Terminal Fittings and Taps
Non-Mechanical Backflow Prevention (Air Gaps)
Water Treatment and Distribution
Mechanical Backflow Prevention Valves
Commissioning: Testing and Flushing
Lesson Overview
Commissioning verifies that a newly installed cold water system is completely watertight, hygienic, and performing to design standards. It covers visual inspection, hydraulic pressure testing, system flushing, flow and pressure testing, and handover.
Learning Objectives
Carry out pre-testing checks and hydraulic pressure testing on metallic and plastic pipework.
Follow the correct step-by-step procedure for filling, flushing, and commissioning cold water installations.
Diagnose common commissioning defects and complete formal customer handover procedures.
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