Chapter hvac engineering Fundamentals: Part 1 Introduction

8.5.3
Multizone AHU
The multizone AHU (Fig. 8.55) provides both hot and cold air and
therefore allows simultaneous heating and cooling in contiguous
zones. The traditional multizone unit had only two ducts—hot and
cold—and was therefore a reheat system. This is now not allowed by
Design Procedures: Part 6
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