SNZ PAS 5312:2021
Gas and liquid fuel boiler systems
The objective of this PAS is to provide advice and information on gas and liquid fuel boiler systems to enable an assessment of their performance and efficiency. Gas and liquid fuel boiler systems are common space-heating technologies used in facilities such as schools, hospitals, and commercial buildings, and also as part of industrial processes. This publicly available specification (PAS) provides advice and information on gas and liquid fuel boiler systems used primarily in space-heating applications that provide hot water between 30°C and 100°C. This broadly encompasses systems between 40 kW and 2 MW. Much of the guidance provided assumes that the gas or liquid fuel boiler system will be used to heat hot water but, where applicable, the general advice provided is also valid for other applications such as industrial process heat.
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SNZ PAS 5312:2021 Gas and liquid fuel boiler systems
CONTENTS
Technical advisory group representation
Acknowledgement
Copyright
Referenced documents
Latest revisions
Review
Foreword
1 General
1.1 Introduction
1.2 Scope
1.3 Objectives
1.4 Interpretation
1.5 Definitions
1.6 Abbreviations
2 Overview
2.1 How does a gas or liquid fuel boiler space heating system work?
2.2 Boiler fuels
2.3 Configuration of gas and liquid fuel boiler systems
2.4 Operation, maintenance and safety
2.5 Where to start? Evaluation of options
2.6 Scoping and conceptual assessment
2.7 Building Code compliance
2.8 Consenting compliance
2.9 Regulatory safety requirements
2.10 Checklist
3 Technical specification
3.1 System operation and efficiency
3.2 Fuels
Table 1 – Boiler fuel compatibility
Table 2 – Advantages of gas and liquid fuel boiler systems
Table 3 – Limitations of gas and liquid fuel boiler systems
Figure 1 – Example of boiler space heating system with thermal store/buffer
Figure 2 – Heat supply system features
Figure 3 – Components of a boiler
Figure 4 – Non-condensing (left) and condensing (right) boiler schematic
Figure 5a – Single-boiler system configuration
Figure 5b – Centralised multi-boiler system configuration
Figure 5c – Distributed multi-boiler system configuration
Figure 6 – System selection
Figure 7 – System efficiency
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References
Gas appliances - Part 1.2: Gas fired water heaters for hot water supply and/or central heating
Specification for liquefied petroleum gas (LPG)
Specification for reticulated natural gas
High-temperature heat pumps
Biomass boilers for small and medium heat loads
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SNZ PAS 5312:2021 Gas and liquid fuel boiler systems
CONTENTS
Technical advisory group representation
Acknowledgement
Copyright
Referenced documents
Latest revisions
Review
Foreword
1 General
1.1 Introduction
1.2 Scope
1.3 Objectives
1.4 Interpretation
1.5 Definitions
1.6 Abbreviations
2 Overview
2.1 How does a gas or liquid fuel boiler space heating system work?
2.2 Boiler fuels
2.3 Configuration of gas and liquid fuel boiler systems
2.4 Operation, maintenance and safety
2.5 Where to start? Evaluation of options
2.6 Scoping and conceptual assessment
2.7 Building Code compliance
2.8 Consenting compliance
2.9 Regulatory safety requirements
2.10 Checklist
3 Technical specification
3.1 System operation and efficiency
3.2 Fuels
Table 1 – Boiler fuel compatibility
Table 2 – Advantages of gas and liquid fuel boiler systems
Table 3 – Limitations of gas and liquid fuel boiler systems
Figure 1 – Example of boiler space heating system with thermal store/buffer
Figure 2 – Heat supply system features
Figure 3 – Components of a boiler
Figure 4 – Non-condensing (left) and condensing (right) boiler schematic
Figure 5a – Single-boiler system configuration
Figure 5b – Centralised multi-boiler system configuration
Figure 5c – Distributed multi-boiler system configuration
Figure 6 – System selection
Figure 7 – System efficiency
SNZ PAS 5312:2021
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.