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- Fresh air intakes located next to
loading docks, parking garages, dumpsters and cooling towers.
- Roof drains located on the highest
part of roof with air handler roof top units located on the lowest
part of roofs.
- Exterior insulation and finish systems
(EIFS, synthetic stucco) without drainage planes.
- Gas water heaters with draft hoods
located inside the pressure boundary of the building enclosure.
- Vented crawl spaces.
- Outside air supplied to dropped ceiling
return plenums.
- Dropped ceiling return plenums.
- Humidified and pressurized hospitals,
museums and computer (data processing) centers.
- Parking garages under high rise buildings.
- Unvented gas fireplaces.
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