USE OM - JANUARY 2017
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3.11
Seasonal Energy Efficiency Ratio (SEER).
The total heat removed from the conditioned space during the annual
cooling season, Btu/h, divided by the total electrical energy consumed, W, by the air conditioner or heat pump during the
same season, Btu/(W·h).
3.12
"Shall" or "Should".
"Shall" or "should" shall be interpreted as follows:
3.12.1
Shall.
Where "shall" or "shall not" is used for a provision specified, that provision is mandatory if
compliance with the standard is claimed.
3.12.2
Should.
"Should" is used to indicate provisions which are not mandatory but which are desirable as
good practice.
3.13
Standard Air.
Air weighing 0.075 lb/ft
3
which approximates dry air at 70°F and at a barometric pressure of 29.92 in
Hg.
3.14
Test.
The time during which all required operating parameters are maintained within specification and
measurements of the Psychrometric Test Facility ambient air conditions and Unit Under Test performance are recorded.
For steady state operation Test time is typically 30 minutes. All Standard Tests prescribed in AHRI Standard 210/240
Section 6.1.3 are considered a Test.
3.14.1
Pre-conditioning Test.
The time during which all required operating parameters are brought within
Standard Rating Conditions. For steady state operation, the last 30 minutes are typically required to have operating
parameters within required operating parameters.
3.15
Test Condition Tolerance.
The maximum variation permitted of a mean value measured during a Test from the
nominal set point for that value.
3.16
Test Operating Tolerance.
The difference between the maximum temperature and the minimum temperature
measured during a Test.
3.17
Third Party Laboratory.
An independent, non-AHRI member, laboratory facility that operates under contract with
AHRI to perform Laboratory Certification Tests on Unitary Air-Conditioners and Unitary Heat Pumps under the scope of the
AHRI Unitary Small Equipment Section Operations Manual.
3.18
Unitary Air-Conditioner.
One or more factory-made assemblies which normally include an evaporator or cooling
coil(s), compressor(s), and condenser(s). Where such equipment is provided in more than one assembly, the separated
assemblies are to be designed to be used together, and the requirements of rating outlined in this standard are based upon
the use of these assemblies in operation together.
3.18.1
Functions
. Either alone or in combination with a heating plant, the functions are to provide air-
circulation, air cleaning, cooling with controlled temperature and dehumidification, and may optionally include the
function of heating and/or humidifying.
3.19
Unit Under Test (UUT).
The indoor section of a split system with electric heat; the system used for round robin
testing; or the static pressure reference device.
Section 4. Test Requirements
All Laboratory Certification Tests shall be conducted in accordance with modifications as dictated by the test methods and
procedures as described in this appendix (Section 5 and Appendices). Each Psychrometric Test Facility that a Laboratory
Facility is qualifying for use in the AHRI 210/240 certification program shall be tested using the following procedures.
Laboratory Certification Tests shall be performed in accordance with the latest DOE test procedure, ASHRAE Standard 37
and ASHRAE Standard 116 unless expressly modified by this appendix.
