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  • PublisherDBSP
  • Product CodeHVDH
  • Number of pages168
  • Publication DateApr 2017
  • ISBN9781906846350

HVDH Domestic Heating Design Guide

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HVDH Domestic Heating Design Guide

CIBSE is the primary stockist of Domestic Building Services Panel publications. Members of the Panel wishing to make bulk purchases at their special rates should email pubsales@cibse.org, telephone +44 (0)20 8772 3618 or by mail to Publications Sales (DBSP orders), c/o CIBSE 222 Balham High Road, London SW12 9BS. 



Domestic heating has extensive implications for energy efficiency and the environment, topics that continue to gain prominence as issues related to them grow in national importance.


The Domestic heating guide was produced by the Domestic Building Services Panel to assist professional heating engineers to specify and design wet central heating systems. It provides a method of coming to agreement with the client as to what is needed and will be provided. It also provides a simple means for the practitioner to design and understand central heating systems. This latewst version is an April 2017 reprint contains small revisions made to previous editions..


Contents:


Foreword


1.0 Introduction

1.1 Objective

1.2 Specification

1.3 Scope

1.4 Installation


2.0 Abbreviations

3.0 Establishing the Client’s Requirements

3.1 General Requirements

3.2 Fuel Choice

3.3 Heating Requirements

3.4 Ventilation

3.5 Heat Generators

3.6 Boilers, Flues, & Attachments

3.7 Heat Pumps

3.8 Solid Fuel Wood & Biomass Appliances

3.9 Oil Fired Appliances

3.10 Heat Emitters & Their Location

3.11 Pipework

3.12 Controls

3.13 Domestic Hot Water

3.14 Plumbing Services

3.15 Existing Systems

3.16 Energy Efficiency


4.0 Energy Efficiency

4.1 What Energy Efficiency Means

4.2 Environmental Impact

4.3 Primary & Delivered Energy

4.4 Why Energy Efficiency is Important

4.5 The Standard Assessment Procedure (SAP - UK) & Dwelling Energy Assessment Procedure (DEAP - R.O.I.)

4.6 Boiler Efficiency

4.7 SEDBUK

4.8 Condensing (High Efficiency) Boilers

4.9 Hot Water Storage Cylinders

4.10 Buffer Tanks & Thermal Stores

4.11 Controls

4.12 Specifying Efficient Systems


5.0 Heat Losses & U-Values

5.1 Basic Principles

5.2 Calculation of Heat Transfer

5.3 Ventilation & Natural Infiltration Heat Loss

5.4 Calculation of Fabric Heat Loss

5.5 Calculation of U-Values

5.6 Example Calculation

5.7 Complex Structures

5.8 Ground Floor U-Values

5.9 Building Regulations


6.0 U-Value Tables


7.0 Ventilation in Living Space

7.1 Ventilation Requirement

7.2 Minimum Requirements for Ventilation

7.3 Fan Duty Selection

7.4 Whole House Mechanical Ventilation

7.5 Combustion Air & Ventilation Requirements for Heating Appliances


8.0 Heat Loss Calculation

8.1 Introduction

8.2 Room Design Temperature Requirements

8.3 External Design Temperatures for the UK

8.4 Room Temperatures & Air Changes per Hour

8.5 Rooms with Chimneys & Open Flues

8.6 Building Exposure

8.7 High Ceilings

8.8 Adjoining Properties

8.9 Intermittent Heating


9.0 Heat Loss Worksheet Procedures & Calculations

9.1 Heat Loss (Watts)

9.2 Design Temperatures & Ventilation Rates

9.3 Allowances for High Ceilings & Intermittent Heating

9.4 Windows, Doors & Roof Glazing

9.5 Party Walls

9.6 Annual Energy Estimation

9.7 A Worked Example


10.0 Heating System Design

10.1 General

10.2 Heating System Water Temperature

10.3 Radiator Selection

10.4 Output Emission Factors

10.5 Radiator Sizing

10.6 Exposed Pipework Emissions

10.7 Underfloor Heating


11.0 Sizing the Heat Source

11.1 Heat Generator Output

11.2 Heat Generator/Boiler Sizing Method


12.0 Domestic Hot Water Supply

12.1 Hot Water Sources

12.2 Choice of System

12.3 Hot Water Storage Cylinders

12.4 Combination Boilers

12.5 Thermal Stores & Combined Primary Storage Units

12.6 Unvented Hot Water Cylinders

12.7 Secondary Circulation

12.8 Trace Heating

12.9 Hard Water

12.10 Dead Legs


13.0 System Layouts & Pipe Sizing

13.1 Typical System Layout

13.2 One-Pipe Circuits

13.3 Reverse Return System

13.4 Avoiding Reversed Circulation

13.5 Pipework Sizing Strategy

13.6 Pipe Sizing Design: Method Statement

13.7 Frictional Resistance

13.8 Pipework Sizing Example

13.9 Pressure Loss Calculations

13.10 Index Circuit Selection

13.11 Cylinder Connections

13.12 Quick Pipework Sizing

13.13 Multiple Boiler Connections Via Low Loss Header


14.0 Circulator Selection

14.1 Circulator Sizing

14.2 Worked Example

14.3 Circulator Position

14.4 System Fault Diagnosis

14.5 Boiler Noise

14.6 System Noise

14.7 Isolating Valves

14.8 Integral Circulator

14.9 HWS Secondary Return Circulators


15.0 Open Vented Systems

15.1 Feed & Expansion, and Safety Pipework

15.2 Feed & Expansion Cistern

15.3 Feed & Expansion Pipe

15.4 Open Safety Vent Pipe

15.5 Pipework Arrangement

15.6 Close Coupled Feed & Expansion & Open Safety Vent Pipe

15.7 Combined Feed & Expansion and Open Safety Vent Pipe

15.8 Water Treatment


16.0 Sealed Heating Systems

16.1 Basic

16.2 System Components

16.3 Expansion Vessel

16.4 Safety (Pressure Relief) Valve

16.5 Pressure Gauge & Thermometer

16.6 Filling Loop

16.7 Water Top-Up

16.8 Top-Up Unit

16.9 Make-up Cistern

16.10 Automatic Air Vents

16.11 Sealed Boiler Systems

16.12 Expansion Vessel Sizing

16.13 Water Treatment


17.0 Pipework Insulation

17.1 Regulations

17.2 Insulation of Heating System Pipework

17.3 Insulation in Unheated Areas


18.0 System Controls

18.1 Control Selection

18.2 Control Components

18.3 Recommended Control Systems

18.4 Enhanced Control Functions

18.5 Typical Control Arrangements

18.6 By-Pass Arrangements

18.7 Three-Way Control Valves

18.8 Two Separate Zone Valves

18.9 Additional Zone Control

18.10 Primary Circuit Radiator

18.11 Compensating Controls

18.12 System Integration


19.0 Combustion Air, Ventilation & Flues

19.1 Air Supply Requirement

19.2 Interaction of Extract Ventilation & Open-Flued Appliances

19.3 SE-Ducts & U-Ducts

19.4 Ventilation & Heat Pump Refrigerant Safety


20.0 Fuel Storage

20.1 Oil Storage

20.2 LPG Storage

20.3 Wood Pellet Storage


21.0 The Specification

21.1 The Quotation

21.2 Design Conditions & Temperatures

21.3 Incoming & Existing Services

21.4 Heat Generators

21.5 Boiler Flue & Chimney

21.6 Condensate Drain Provision

21.7 Fuel Storage

21.8 Ventilation

21.9 Heat Emitters

21.10 Heat Emitter Controls

21.11 Hot Water Cylinder

21.12 Electric Immersion Heater

21.13 Circulators

21.14 Feed & Expansion Cistern

21.15 Sealed System Equipment

21.16 Programmers & Controls

21.17 Electric Wiring

21.18 Pipework

21.19 Insulation

21.20 Water treatment

21.21 Building Work

21.22 Waste & Scrap

21.23 Variations to Contract

21.24 Commissioning & hand-Over procedure

21.25 Programme of Works

21.26 Qualifications of Each Operative

21.27 Guarantees

21.28 Extended Warranty & Breakdown Insurance

21.29 Health & Safety

21.30 Conditions of Contract


22.0 Hand Over & Future Service

22.1 System Operation Explained

22.2 Safety Instructions

22.3 Written Instructions

22.4 Guarantees

22.5 Benchmark

22.6 Competent Person Schemes

22.7 Future Service

22.8 Special Tools


23.0 Schedule of Installed Equipment

23.1 Equipment Record

23.2 Record Drawings

23.3 Emergency Contacts


Appendix A Legislation Relating to the Building Regulations in the United Kingdom & Ireland


Appendix B Controls for Domestic Central Heating Systems - Definitions

B1 Time Switch

B2 Programmer

B3 Room Thermostat

B4 Night Setback

B5 Programmable Room Thermostat

B6 Delayed Start

B7 Optimum Start

B8 Optimum Stop

B9 Cylinder Thermostat

B10 Programmable Cylinder Thermostat

B11 Weather Compensator

B12 Load Compensator

B13 Boiler Energy Manager

B14 Boiler Anti-cycling Device

B15 Boiler Thermostat

B16 Boiler Auto Ignition

B17 Boiler Modulator (water temperature)

B18 Boiler Modulator (air temperature)

B19 Pump Over-run

B20 Pump Modulator

B21 Motorized Valve

B22 Automatic Bypass Valve

B23 Thermostatic Radiator Valve

B24 Frost Thermostat

B25 Pipe Thermostat

B26 Boiler Interlock

B27 Zone Control

B28 Temperature and Time Zone Control (or full zone control)

B29 Self-adaptive (or self-learning) control

B30 Simplified descriptions of the functions of the main types of heating control for use in explaining systems to customers

Appendix C Standards & Guidance Documents Relating to Domestic Heating Installations

Appendix D Conversion Factors

Appendix E Details of Organisations from Whom this Guide is Available

Appendix F Blank Copies of the Worksheets Used in This Book

Appendix G Heat Pumps


The Domestic Building Services Panel's website can be found here