【HVAC Version】Daily Question 20171108
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This post was last edited by hesonchang214 on 2017-11-20 at 11:45. Fill in the blank: For the installation of pipes in air conditioning systems, ( ) should be installed at the points where the pipes pass through walls or floors. Correct answer: Steel casing
For the installation of pipes in air conditioning systems, steel sleeves should be installed at the points where the pipes pass through walls or floors
For the installation of pipes in air conditioning systems, (steel sleeves) should be installed at the points where the pipes pass through walls or floors.