Staff Contact: Maryline Rassi
Related Guideline A
Guideline A Scope
This provides general precautionary guidelines for customers, building owners, and others that install energy management systems (EMS) as add-on after market applications to refrigeration and air-conditioning equipment.
International Electrotechnical Commission Technical Committee 72
IEC/TC 72 was initially established to fill the needs for international safety standards for automatic electrical controls for use in household appliances and similar equipment. The scope was recently expanded to include industrial applications. The USNC TAG was established to harmonize U.S. safety philosophies and practices within IEC/TC 72 with those of the European Union and Asia Pacific regions.
Strategic Policy Statement
Scope and Activities
Controllers and auxiliary control devices, which are primarily designed to aid in unattended operation, or safety in the operation of components of comfort conditioning equipment, commercial and industrial refrigeration equipment covered by the scopes of AHRI Product Sections. Such devices are to be responsive to, but not limited to, one or more of the following conditions: time, temperature, pressure, humidity, fluid flow, air quality (this includes all air contaminants including leaked refrigerants), current, voltage, or power.
Specifically excluded are:
General purpose motor starters and circuit breakers.
All low voltage thermostats.
Component controllers and auxiliary controlling devices used in equipment not covered by scopes of AHRI sections, for example:
Automotive and recreational vehicle
Domestic refrigerators and freezers
Room air conditioners
Controls for Gas-Fired Utilization Equipment Section Scope
Includes controls, including components, and accessories, for use on gas-fired utilization equipment (including, but not limited to, combination gas controls; manual gas valves; gas appliance pressure regulators; automatic gas valves; automatic gas ignition systems; flame sensors, monitors and programmers; gas filters and sediment traps; thermostatic system components; automatic flue and vent dampers; oxygen depletion sensing (ODS) devices, pressure sensors and switches; and line pressure regulators.