FUNCTIONAL PERFORMANCE VERIFICATION:
The following sections are a series of field tests that are intended to verify that the water loop heat pump system is installed, operates as intended to operate by the manufacturer and designer. For each test, first determine and record the design operation, then record the actual field observation. If the field observation does not correspond to the intended design operation, indicate a comment number that refers to an explanatory comment in the comments section or on attached comments sheets. If a test does not apply, write “NA” for not applicable. If you were not able to complete a test, write “ND” for not done, and explain in a comment.
Sampling: If there are more than 6 heat pump units, you may select a sample for the following performance tests. The sample should be at least 5% of the total number of heat pumps, or 6 units, whichever is greater. Zones should be selected from different areas of each floor, and from different levels. If there is failure of any test for more than 10% of the sampled units, or 2 units, whichever is greater, then the entire heat pump system installation shall be considered to be not in conformance. In that case, the installing contractor is responsible to test all units prior to calling for a retest under this procedure.
Basic performance tests: Put each unit under heating and cooling loads by lowering/raising zone temperature setpoints by 10 F degrees and waiting 5 minutes for heat pump operation to stabilize. (If the system includes an economizer, lock it out for these tests.) Record the following. The design line in each test set refers to the design condition as reflected in catalog data, drawings, design intent document, etc. The measured line refers to your test results.
Criteria for Acceptance: The measured values for all CFM and delta temperature tests must be within ±15% of the design value as noted on each previous line. Measured unit currents must be less than or equal to the design value.