AlfaTech HVAC System Strategies for Airborne Diseases

H V A C S Y S T E M S T R A T E G I E S F o r A i r b o r n e D i s e a s e s

RECOMMENDED SEQUENCE OF OPERATIONS UPDATES

❑

Increase the duration of building purge mode / flush mode to

increase dilution.

❑

Run restroom exhaust continuously 24/7. Increase restroom

exhaust rates if exhaust and make up system capacity allows.

❑

Monitor and control building humidity. Revise dehumidification

and humidification sequences as necessary.

❑

Maintain equal space pressures on all floors in multi-story

buildings to avoid cross contamination between different floors.

❑ Maximize supply air reset sequence for buildings equipped with

this sequence. This would allow more outdoor air and more air

changes within the building.

❑

Disable demand-controlled ventilation and unoccupancy /

vacancy sequences during scheduled business hours where

possible. Use CO2 sensors for particle measurement only.