AS 3634:2022


Solar heating systems for swimming pools

Published by Standards Australia, 12/16/2021


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AS 3634, 2nd, 2022 – Solar heating systems for swimming pools

AS 3634:2022 sets out requirements for the design, installation and commissioning of solar heating systems for swimming pools and spas, using direct and indirect circulation of pool water to the solar collectors.

General Product Information:

Committee CS-028
Purchase Note All current amendments available at time of purchase are included with the purchase of this document
Document Type PDF
ISBN 978 1 76139 007 4
Pages 43
Document Language English
Publisher Standards Australia
Status Current


Table of cotents

1 Scope
2 Normative references
3 Terms and definitions
4 Collectors
4.1 Materials
4.2 Collector location
4.2.1 General
4.2.2 Orientation and inclination
4.2.3 Shading
4.2.4 Site exposure
4.3 Mountings
4.4 Interconnection of panel collectors (unglazed or glazed)
4.4.1 Flow distribution
4.4.2 Connections
4.5 Collector sizing
4.5.1 General
4.5.2 Pool cover usage
5 Control system
6 Hydraulic considerations
6.1 General
6.2 Water filtration (solar circuit) and water treatment
6.3 Protection against freezing
6.4 Protection vacuum crushing
6.5 Water velocities
6.6 Addressing the risk of hot water to persons
7 Pipework
7.1 Material
7.2 Installation
7.3 Isolating valves
7.4 Solar outlets
7.5 Heated water inlet
7.5.1 Solar circuit separate from filter circuit
7.5.2 Solar circuit connected to filter circuit
8 Pumps
8.1 Pump capacity
8.2 Pump motor
8.3 Use of existing pool filter pump
8.4 Use of separate pump
9 Commissioning and handover
9.1 General
9.2 Commissioning
9.3 Handover and documentation
Appendix A
A.1 General
A.2 Collectors
A.2.1 General discussion
A.2.2 Unglazed collectors
A.2.2.1 Strip collectors
A.2.2.2 Panel collectors
A.2.2.3 Pipe collectors
A.2.2.4 Rigid tube collectors
A.2.3 Glazed collectors
A.2.4 Collector area for pools with auxiliary heating
A.2.5 Collector area for pools without auxiliary heating
A.3 Pipe sizing and arrangement
A.4 Pressure considerations
A.5 Control strategies
A.5.1 Differential temperature controllers
A.5.2 Photovoltaic controllers
Appendix B
B.1 General
B.2 Evaporation heat loss
B.3 Radiation heat loss
B.4 Convection heat loss
B.5 Solar radiation heat gain
B.6 Effect of pool covers on heat loss
B.6.1 Evaporative heat loss with cover
B.6.2 Radiation heat loss with cover
B.6.3 Convective heat loss with cover
B.6.4 Solar radiation heat gain with a cover
B.6.5 Time of use of cover
Appendix C
C.1 General
C.2 Effect of pool covers on heating load
Appendix D
Appendix E
E.1 Example climate data