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Unvented Hot Water Cylinders
Warranty, Installation, Operation and Maintenance
Instructions
IMPORTANT NOTE TO THE INSTALLER
Read these installation and maintenance instructions before commencing. Unvented cylinders are a controlled service as
defined in the latest edition of the building regulations and should only be fitted by a competent person.
The relevant regulations are: England and Wales – Building Regulation G3; Scotland – Technical Standard P3; North Ireland – Building Regulation P5.
After installation the installer must left the instructions manual with the householder.
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Table of Contents
Related Manuals for joule TWIN
Summarization of Contents
Product Guarantee
Guarantee Exclusions
Details what is not covered by the manufacturer's warranty.
Troubleshooting: Problem Guidance
Steps to follow if a problem occurs with the cylinder.
User Operational Guidance
Instructions for the end-user on system operation.
Water Supply and Chemistry
Total Dissolved Solids (TDS) Limits
Explains TDS limits and their effect on the warranty.
Warranty Affecting Water Chemistry
Lists water chemistry levels that can affect the product warranty.
Scaling Water Prevention
Details issues caused by hard water and scaling prevention.
Pre-Installation Storage
Unvented Cylinder Features
Key features and materials of the unvented cylinder.
Unit Siting
System Schematic Diagram
Diagram illustrating the system layout and connections.
Water Supply Requirements
Details on required water supply pressure and flow rates.
General Installation Procedures
Cylinder Connection Guide
How to make pipework connections to the cylinder.
Cold Mains Pipework Installation
Guidance for installing the cold water inlet pipework.
Balanced Cold Supply Connection
Requirements for a balanced cold water supply connection.
Hot Water Pipework Installation
Recommendations for installing hot water draw-off pipework.
Primary Coil Connections (Indirect)
Instructions for connecting the primary heating circuit.
Secondary Circulation System
Information on setting up a secondary hot water circulation system.
Immersion Heater Installation
Details on fitting and connecting immersion heaters.
Discharge Arrangement Safety
Discharge Pipework Routing & Safety
Guidance on routing and sizing discharge pipes for safety.
System Commissioning
Initial Filling Procedure
Steps for filling the cylinder and associated pipework.
Direct Unit Commissioning Steps
Commissioning steps for direct heated cylinders.
Indirect Unit Commissioning Steps
Commissioning steps for indirect heated cylinders.
Recommended Storage Temperatures
Recommended water storage temperatures for optimal performance.
Commissioning Safety Valve Tests
Procedure for testing safety valves during initial setup.
Servicing and Maintenance
General Servicing Guidelines
General guidance on who should perform servicing and parts.
Safe Draining Procedure
Steps for safely draining the hot water cylinder.
Annual Maintenance Checklist
Key maintenance tasks to be performed annually.
Spare Parts Availability
Availability and sourcing of genuine spare parts.
Technical Specification Summary
Materials Specification
Information on the materials used for the cylinder and components.
Insulation Properties
Properties and environmental aspects of the cylinder insulation.
Casework and Finish
Description of the external casing and its finish.
Anode Information
Details regarding the anode, if fitted or required.
Expansion Vessel Details
Details about the expansion vessel component.
Control Settings Summary
Summary of pressure and temperature control settings.
Immersion Heater Specifications
Technical specifications of the immersion heater element.
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