Standard
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AS 1308-1987
[Current]Electric water heaters - Thermostats and thermal cutouts
Specifies revised terminology and requirements for thermostats, thermal cutouts (TCOs) and combined units; also a clip template to provide interchangeability between clip-mounted units. Provides guidance on temperature settings and introduces the concept of 'scale offset' to allow for differences between the specified standard test tank and the water heater to be controlled. A minimum cut-out temperature of 60 degrees Celsius is specified on health grounds.
Published: 01/06/1987
Pages: 13
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
PREFACE
1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.3 REFERENCED DOCUMENTS
1.4 SAFETY
1.5 DEFINITIONS
2 DESIGN AND CONSTRUCTION
2.1 CONSTRUCTION
2.2 CURRENT RATINGS
2.3 TERMINATIONS
2.4 DIMENSIONS AND MEANS OF ATTACHMENT
2.4.1 Contact thermostats and TCOs
2.4.2 Immersion thermostats
2.4.2.1 Dimensions
2.4.2.2 Stems
2.4.2.3 Pockets for immersion thermostats
2.4.3 Other types of device (capillary or electronic)
2.5 TEMPERATURE SETTINGS OF THERMOSTATS
2.5.1 General
2.5.2 Adjustable thermostats
2.5.3 Fixed-setting thermostat
2.5.4 Temperature differential
2.6 OPERATION OF THERMOSTATS
2.6.1 Thermal operation
2.6.2 Endurance
2.7 OPERATION OF THERMAL CUTOUTS
2.7.1 Cut-out temperature—General
2.7.2 Cut-out temperature—Criteria
2.7.3 Multipole TCOs
2.7.4 Removable fusible component
2.8 PACKING
3 MARKING
3.1 INFORMATION TO BE MARKED
4 TESTING
4.1 GENERAL
APPENDIX A
APPENDIX B
Bl SCOPE
B2 PRINCIPLE
B3 APPARATUS
B4 TEST PROCEDURE
B5 REPORT
APPENDIX C
Cl SCOPE
C2 PRINCIPLE
C3 APPARATUS
C4 PROCEDURE
C5 REPORT
APPENDIX D
D1 SCOPE
D2 PRINCIPLE
D3 APPARATUS
D4 TEST PROCEDURE
D5 REPORT
ANNEX
Cited references in this standard
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