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Upgrade nowInstalling Unvented 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
Installing unvented hot water storage systems requires compliance with Building Regulations Approved Document G3, strict component sequencing, robust structural support, and appropriate pipework materials.
Learning Objectives
Identify the statutory regulations and competency requirements governing unvented hot water installations.
Specify correct installation practices regarding structural support, pipework sizing, and materials.
Distinguish between factory-assembled units and site-assembled packages.
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