ASHRAE 221-2020

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Standard 221-2020 — Test Method to Field-Measure and Score the Cooling and Heating Performance of an Installed Unitary HVAC System (ANSI Approved)
standard by ASHRAE, 2020



Standard 221 prescribes a field evaluation and test method to measure andscore the performance, in terms of delivered cooling or heating capacity or cooling efficiency, of an installed unitary HVAC system.This standard * Defines performance scoring methods for cooling and heating system delivered capacity and cooling system efficiency* Establishes uniform methods of measurements and testing procedures for airflow, temperature, enthalpy, and power* Specifies test instruments, specifications, and calibration requirements for performing such measurements and tests * Specifies data required and calculations to be used* Applies to single-zone unitary split and packaged direct expansion (DX) cooling, air-source heat pump, and combustion furnace HVAC systems of any capacity and with forced-air distribution systems

Product Details

ANSI Approved
Number of Pages:
Units of Measure:
File Size:
1 file , 11 MB
Product Code(s):
D-86644, 86644