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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
A direct cold water system supplies wholesome drinking water under mains pressure straight to every cold water fitting and appliance in the property.
Learning Objectives
Understand the layout and operating principles of a direct cold water supply system.
Identify correct pipe sizing and configurations for combination boiler and cylinder installations.
Evaluate the advantages, limitations, and common system issues associated with direct cold water supplies.
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