CPS IAQPRO SmartAir Manual de inicio rápido y resolución de problemas - Página 5
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AIR QUALITY (Issues, Causes, Solutions)
Indoor Air Quality
Issues
Unbalanced HVAC System
Hot or Cold
Building Envelope Exces-
Temperatures
sive Leaking
in Rooms
Missing or Damaged
Insulation
Return and/or Supply Duct
Leaks
Oversized AC Unit/Short
High
Cycling
Humidity Level
Building Envelope Exces-
sive Leaking
Dirty Ductwork
Organic Growth on Coils/in
High PM 2.5 (0-
Air Handler
2.5 microns)
Return Duct Leaks, Con-
taminate Infiltration
Dirty Supply Grilles
High PM 10.0
(2.5-10.0 mi-
Poor Filtration
crons)
VOC Contaminants
The U.S. EPA reports that
on average, 60% of VOC's
High tVOC Level
enter the home through an
attached garage
Mechanical equipment
issues
Insufficient returns
High CO 2 Level
Inadequate ventilation
Negative air pressure in
summer
Negative air pressure in
High Or Low
winter
Building Pres-
Positive air pressure in
sure
summer
Positive air pressure in
winter
Potential Causes
Install Home Balancing Kit in all supply
grilles
Perform blower door test
Perform leak inspection of all potential
leak sources (windows, doors, chimney,
wall insulation)
Perform thermal imaging inspection to de-
termine sources of insufficient insulation
Perform leak inspection and repair all
leaks in ductwork
Calculate appropriate equipment size and
adjust accordingly
Perform blower door test
Perform leak inspection of all potential
leak sources (windows, doors, chimney,
walls insulation)
Clean and sanitize ducts
Add whole home UV/anti-bacterial system
Clean and sanitize cooling coils, conden-
sate drain pan/lines and interior of air
handler cabinet
Add UV light and antimicrobial tabs to
condensate drain pan
Perform leak inspection and repair all
leaks in ductwork
Clean supply grilles
Add return filters with MERV rating (≥ 12) US EPA 24-hour stan-
Add local HEPA filtration to remove parti-
cles > 3 microns
Remove contaminants inside home or
garage
Improve ventilation inside home or garage
Add garage ventilation fan to exhaust/
create negative pressure
Seal garage/mud door from home
Inspect gas appliances and heaters for
leaks
Add or increase size of return registers in
bedrooms
Add ERV (Energy Recovery Ventilation)
or HRV (Heat Recovery Ventilation) to
exchange stale air with fresh air
Inspect windows, doors or other openings
in the building envelope for air leaks
Recommended Solutions
+
Recommended
Indoor Levels
The World Health Orga-
nization recommends
64 °F (18 °C)
OSHA recommends
20–60% relative
humidity.
US EPA recommends
an average <12 μg/
m3 or less per day over
duration of 1 year.
dard <65 μg/m3 based
on the 3-year average
of the annual 98th per-
centile concentrations.
No federally enforce-
able limits, but 50 ~
325 ppb are thought
to be acceptable, but
recommended to not
exceed 500 ppb.
350-1,000 ppm is
typical level in occupied
spaces with good air
exchange.
Slightly positive +.02-
in. to +.03-in.WC. can
make a huge difference
in building comfort and
efficiency.
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