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C273.4-M1978 (R2003)

Performance Requirements for Electric Heating Line-Voltage Wall Thermostats

SKU: 2412970 Published by CSA Group Publication Year 1978 Reaffirmed in 2003 20 pages Withdrawn

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Preface/Scope

Preface

This PDF includes amendments #1-#16.

Scope

1.1
This Standard applies to line-voltage wall thermostats, as defined in Clause 2.1, rated 300 V and less, complying with the requirements of CSA Standard C22.2 No. 24, Temperature-Indicating and -Regulating Equipment, and intended to be used for direct switching of a controlled resistive heating load.

1.2
This Standard covers definitions, performance requirements, marking, tests, and test equipment, and establishes minimum requirements for performance of line-voltage wall thermostats.

Note: The test conditions of Table 1 attempt to simulate a room having minimum furnishings and isolated from the other living areas. It would be an error to directly relate the performance figures generated in this Standard to actual conditions.

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