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Upgrade nowServicing & Maintaining Hot Water Systems
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
Periodic servicing and maintenance of hot water systems ensures regulatory compliance, optimal energy efficiency, and safety. This guide covers statutory inspection procedures for open vented and unvented domestic installations.
Learning Objectives
Identify the 12-month servicing requirements for unvented hot water storage systems to Approved Document G3.
Execute routine maintenance checks on open vented hot water cylinders, cold feed cisterns, and sacrificial anodes.
Apply safety procedures for manually exercising relief valves, verifying expansion vessels, and implementing thermal disinfection.
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