Chapter hvac engineering Fundamentals: Part 1 Introduction

Equipment: Part 3
389
Figure 11.19
Fan-coil unit (floor-mounted).
Figure 11.20
Unit ventilator.
Equipment: Part 3
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390
Chapter Eleven
Many unit-ventilator system designs ignore the need for relief air
when the units are in full ventilation mode. The consequence is a
pressurized room or building. Failure of the outside air damper to close
tightly may result in freezing of water coils in cold climates.