USE OM - JANUARY 2017
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5.4.4.1
Each Room in which the Laboratory Facility may use for AHRI 210/240 performance
Tests shall undergo the full battery of tests outlined below with the same round robin system:
5.4.4.1.1
AHRI 210/240 Standard Tests
. The full set of tests from AHRI Standard
210/240 Tables 3 through Table 10 as appropriate shall be performed. Cyclic tests
must be performed.
5.4.4.1.2
Evaluation of Latent Capacity Measurement
. See Section 5.5 for full details.
These tests shall be run at the same time as the steady state cooling Tests from
Section 5.4.4.1.1.
5.4.5
Minimum Data Collection Requirements.
5.4.5.1
All data required by ASHRAE Standard 37 Section 9 shall be required for all Tests in
Section 5.4.4. SEER and HSPF shall be determined using the BIN method only.
5.4.5.2
In addition, all data identified in Section 5.5.4 shall be collected to evaluate the latent
capacity measurement.
5.4.6
Interpretation and Application of the Data
.
5.4.6.1
In order to be qualified as an Authorized Laboratory Facility, the following criteria must
be met:
1.
Each individual measured value (cooling capacity, heating capacity, SEER and
HSPF) shall be within 2% of the mean of all individual measured values.
2.
The latent capacity balance shall be within the tolerances specified in Section
5.5.6 of this appendix.
3.
System state points shall be within:
a.
5 psig for any high-side pressure
b.
2 psig for any low-side pressure
c.
1°F superheat at charging location (for piston expansion systems)
d.
1°F subcooling at charging location (for expansion valve systems)
Any questions on the testing process shall be referred to the Committee.
5.4.7
Reporting and Retention of the Data
.
All data and results identified in Sections 5.4.5 and 5.4.6 shall be reported for each test. Data and results shall be
retained for a minimum of seven (7) years.
All Round Robin Test Data shall be reported in both the laboratory
standard report format, as well as XML format (if available), as required by the AHRI USE Operations Manual.
5.5
Evaluation of Latent Capacity Measurement
.
5.5.1
Purpose of the Test
. This test compares the psychrometric measured latent capacity against the
calculated latent capacity using the measurement of condensate draining from the indoor coil of the system. This
is to provide a Laboratory Facility the ability to validate that its psychrometric measurement apparatus can measure
the latent capacity within 5% of the actual condensed water removed from the airstream by the indoor coil.
5.5.2
Selection of Equipment.
5.5.2.1
The equipment for latent capacity measurement is the same as that required
previously by Section 5.4.2.
5.5.3
Test Setup
.
