scope:

Scope.

This Standard applies to communication, infrastructure and system functionality as they relate to the implementation of energy management strategies for variable capacity DR-ready HVAC systems installed in residential and small commercial applications with capacities of 65,000 Btu/hr or less as defined in Section 3.

Standardized communication required to enable participation in DR programs of electric utilities and related entities.

Infrastructure or the minimum acceptable pathways, including the physical layer, to enable direct communication between HVAC systems and electric utilities and related entities throughout the U.S. and Canada.

HVAC systems functionality including the control modes and how the system responds to signals to modulate or restore normal operation.

Exclusions. This standard does not apply to any AC or HP equipment with capacity greater than or equal to 65,000 Btu/h Rated Load Conditions.

Purpose.

The purpose of this standard is to establish for Demand Response (DR) through variable capacity HVAC systems in residential and small commercial applications definitions; test requirements, operating and physical requirements, minimum data requirements for published ratings, marking and nameplate data and conformance conditions.

Intent. This standard is intended for the guidance of HVAC systems and electric utility industries, including manufacturers, designers, installers, contractors, users and demand side management program managers. By providing standardized requirements for DR-ready HVAC systems, DR program managers can be assured the equipment is enabled to communicate in standardized messages on OpenADR 2.0 standardized DR communication protocols.

Review and Amendment. This standard is subject to review and amendment as technology advances in both HVAC equipment and DR communication protocols.

DR strategies. DR strategies may include but are not limited to concepts such as direct load control and price response programs.