ASHRAE 40-2014
Methods of Testing for Rating Heat-Operated Unitary Air-Conditioning and Heat-Pump Equipment

Standard No.

ASHRAE 40-2014

Release Date

2014

Published By

ASHRAE - American Society of Heating@ Refrigerating and Air-Conditioning Engineers@ Inc.

Latest

ASHRAE 40-2014

Scope

This standard applies to heat-operated unitary air conditioners and heat pumps consisting of one or more assemblies@ including engine-driven systems. Where such equipment is provided in more than one assembly@ the separate assemblies are designed to be used together. Equipment within the scope of this standard may be classified as follows: a. Component arrangements: 1. factory-assembled equipment employing heat-operated or mechanical refrigeration cycle or cycles (e.g.@ a packaged unit) 2. equipment employing a heat-operated or mechanical refrigeration cycle with indoor and outdoor sections in separate assemblies (e.g.@ a split system) 3. equipment employing a heat-operated or mechanical refrigeration cycle as a liquid chiller with cooling coil in separate assembly (e.g.@ chiller) 4. equipment employing refrigeration cycles and heating functions (e.g.@ chiller/heater). b. Method of providing air circulation through indoor section: 1. with circulating fan incorporated with indoor assembly 2. without circulating fan@ for use with separate fan or air handler@ or with heating equipment incorporating a fan. c. Medium for heat transfer to or from the outdoors: 1. air 2. water (or brine) 3. evaporatively cooled condenser (cooling only) This standard does not include methods of testing the following types of equipment: a. heat-operated absorption and engine-driven liquid chillers not part of a unitary air conditioner b. electrically driven unitary air conditioners or heat pumps c. refrigerating systems employing the Peltier effect d. desiccant-based cooling systems PURPOSE This standard provides test methods for determining the heating and cooling output capacities and energy inputs of unitary air-conditioning and heat pump equipment that is heat-operated (see Section 3@ ??Definitions??). These test methods may be used as a basis for rating such equipment@ but it is not the purpose of this standard to specify methods of establishing ratings.

ASHRAE 40-2014 history

• 2014 ASHRAE 40-2014 Methods of Testing for Rating Heat-Operated Unitary Air-Conditioning and Heat-Pump Equipment
• 2002 ASHRAE 40-2002 Methods of Testing for Rating Heat-Operated Unitary Air-Conditioning and Heat-Pump Equipment
• 1980 ASHRAE 40-1980 Methods of Testing for Rating Heat-Operated Unitary Air-Conditioning Equipment for Cooling