Where should air vents be located in a hot water heating system?
A) Leaving the circulator pump
B) Air vents need to be placed at low points of the system and on terminal units
C) Entering the circulator pump
D) Air vents need to be placed at high points of the system and on terminal units
D
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A. xtree B. rmdir C. dldir D. deltree
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Which type of screwdriver should be used if there is limited space above the head of the fastener?
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