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【HVAC Version】Daily Question 20171123

2017-11-23View Original

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Before installing the fan-coil unit, it is advisable to conduct a three-speed test run of the individual unit as well as a water pressure leak test. The test pressure is 1.5 times the working pressure, and the test observation time is ( ) minutes; no leakage is considered acceptable. A、5 B、3 C、2 D、1

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