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Piping systems

Which of the following can supply both heated and chilled water to a zone simultaneously? (Select 2)
A. Forced convection
B. Two pipe system
C. Three pipe system
D. Four pipe system
E. Siamese fitting
AnswerC (heated and chilled supply with shared return) and D (heated and chilled supply with separate returns)
ARE 4.0 exam prep: BS

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