Central Heating and Water Heaters 6th Edition 2022 (PDF)

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About the book:

Publisher: CORGIDirect

Place of Publication: United Kingdom

Pages: 259

Edition: 2022

Language: English

Size: 87 Mb

Content:

1 - Introduction

The guidance this manual provides 3

The competence you need to carryout work 3

Building regulation requirements 10

Approved Document B (ADB) - points to note 1 1

Approved Document G - points to note 11

Approved Document J (ADJ)- points to note 14

Approved Document L (ADLIA and ADLIB) -

points to note 14

Approved Document P (ADP)- points to note 17

Conversion to burn another gas 17

2 - Central heating wet

The heating system - a background history 17

Designing wet central heating systems can be complex 22

Condensing appliances 24

Installation 24

3 - Open-flued and room-sealed boilers

Introduction 31

Restricted locations - for safety reasons 33

Installation 34

4 - Combination boilers

Introduction 39

Installation 39

5 - Combined gas fire/back boilers

Introduction 45

Building Regulations and ADJ 46

Installation 49

6 - Combined gas fire/back circulator

Introduction 55

Installation 55

7 - Warm air heating

Introduction 65

How the systems have evolved 65

Correct design and installation of warm air systems is essential 66

Types and application of heaters - choose to suit dwelling 67

Controls particular to warm air heaters 70

Conversion to another gas 72

Restricted locations - for safety reasons 73

Installation - what you need to consider 73

Return air (re-circulation) 79

Duct systems - points to consider 84

Types of duct systems - choose for location and needs 86

Why you need to balance the heating system 91

8 - Warm air heater replacement

What you need to know 97

How to choose the right replacement heater 97

Warm air plenum: what you need to do 98

Generally three types of air flow 100

Type of open-flued chimney connection 100

Chimney system - open-flued 100

Chimney system - room-sealed 103

Chimneys in voids 104

Replacement of natural convection (brick central) models 104

Replacement of electric fan-assisted models 107

Return air arrangement - design to avoid problems 108

Balance the existing system 108

9 - Warm air systems- General installation details

Introduction 113

Warm air heater locations 113

Commissioning: your responsibility 113

How to carry out servicing 116

Maintenance 122

Faultfinding - always be methodical 122

Odd coloured gas flames 126

Chimneys 126

Gas supply: your responsibility 129

Ventilation - when and why needed 129

10 - Water heaters

Types of gas water heater 137

Introduction - Water heaters 138

Clearances around the appliance 139

Restricted locations - note safety aspects 140

Instantaneous water heaters -

General appliance information 142

Main components: how they work 142

How to check water draw-off temperature 146

Showers - information to help you 147

Washing machines and dish washers - points to note 148

Storage water heaters - general appliance information 148

Circulators - general appliance information 149

Unvented hot water storage systems - when you can use 152

Unvented hot water storage system components - what you need to do 154

11 - General installation details

Introduction 165

Appliance locations 165

Bathroom and shower room installations 165

Bedroom and bedsitting room installations 167

Toilet and cloakroom installations 167

Roof space installation 168

Compartment installations - safety needs to consider 168

External installation 172

Other installations 172

Fire and other safety precautions 172

Floor and wall protection 174

Chimneys systems 175

Chimneys in voids 184

Flue testing 187

Ventilation 188

Gas supply 188

Electrical connections 189

Electrical isolation - essential for safety 189

Condensate discharge 191

System requirements 199

System water 205

System protection 206

Commissioning: your responsibility 206

Servicing 209

Maintenance 214

Faultfinding - you must be methodical 214

Reports of fumes from open-flued appliances - what you must do 223

Reports of fumes from room-sealed appliances - what to do to avert danger 225

Flame reversal - may be dangerous 231

Wall staining - always check cause 232

Odd coloured gas flames 233

12 - Definitions

Definitions 237

13 - CORGIDirect Publications

Gas- Domestic 247

Gas- Non Domestic 248

Electrical 248

Plumbing 248

Renewables 249

Business 249

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