Indoor Environmental Quality HVAC Assessment of Clarksville Elementary School: January 27th, 2022 (HXXCES202200006A)

Assessor
Hummy Khan
Date
Outdoor Temperature
34°F
Relative Humidity
38%
Outdoor Dew Point
13°F

Air Handling Unit (Assess representative sample of RTU/AHU, including Portables)

Unit
Check OK Comments
Tag Number
Displayed
Yes
Addressed by Building Maintenance
No tag numbers on any exhaust fans. No tag numbers on rooftop units located on the kindergarten addition side of the building.
Status
Running
Yes
Outdoor Air Intake and Outdoor Air Dampers
Check OK Comments
Outdoor Pollution
Free from pollution sources w/i 25 ft. (e.g. dumpster, chimney, etc.)
Yes
Louvers and Access Doors
Operating properly
Yes
Addressed by Building Maintenance
H&V-1- Supply fan section access door latch broken and door was not properly closed and cannot be closed due to this.
Deflectors & Screens
Present
Yes
No debris
Yes
Dampers
Outside air damper: no obstructions
Yes
Addressed by Building Maintenance
RAHU-1 - Outside air dampers (OADs) appeared to be closed. Also, two AAON rooftop units (no tag numbers) located on the kindergarten addition side of the building - OADs closed. Deschamp RTU (no tag number) located on the Kindergarten addition side of the building and OAAHU-3- OADs appeared to be 100% open when it is 34 deg. outside temperature. OADs should be at minimum position when the outside temperature is that cold unless it is a dedicated 100% fresh air unit.
Return air damper: no obstructions
Yes
Mixing Plenum
Check OK Comments
Clean
No excess dirt, not used for storage
Yes
Insulation
Secure and Clean
Yes
P-Trap (if present)
Charged with liquid
Yes
Filters and Coils
Check OK Comments
Filters
Free of any bypassing
Yes
Addressed by Building Maintenance
See above.
Correct size
Yes
Free from excessive loading, dampness or odor
Yes
Not collapsed/not fallen off
Yes
Addressed by Building Maintenance
OAAHU-1- One filter blown off and hanging from filter clip. Majority of the air is passing through this opening and is not being filtered. Similar finding was reported last year as part of the previous year's inspection findings. OAAHU-2- Filters are pushed out and creating air bypass.
Present (not missing)
Yes
Addressed by Building Maintenance
AHU-1 and AHU-2-Only one set of filters installed, should be two. Unit has two tracks, one for pre filters and second one for final filters. Two sets of filters provide better filtration and extends the life of the final filters.
Date and initials written
Yes
Addressed by Building Maintenance
On some units the filters have only the date written on them but no name of the installing technician.
Heating Coils
Clean, no noticeable leaks, or obstructions
Yes
Cooling Coils
Clean, no noticeable leaks, or obstructions
Yes
Access: Free of any obstructions in area that may affect access
Yes
Condensation: No excess condensation problems
Yes
Blowoff: Free of water from coil blowoff
Yes
Condensate Pan and Drain Line
No visible bacterial or fungal growth
Yes
Clean, no residue, no standing water
Yes
No Overflow, leakage, blockage, or damage
Yes
Proper slope, drain line ok, drainage acceptable, discharge okay
Yes
Fans and Motors
Check OK Comments
Condition
Operational
Yes
No unusual odors, noise, or vibration
Yes
Addressed by Building Maintenance
OAAHU-1- Making a loud noise.
Central Plant
Check OK Comments
Chilled Water Central Plant
Chiller operational
Yes
Addressed by Building Maintenance
Not operational due to heating season.
Cooling tower operational
Yes
Addressed by Building Maintenance
Not operational due to heating season.
Heating Central Plant
Boiler operational
Yes
Portable(s)
Check OK Comments
Thermostat
Thermostat setting acceptable
Yes
Addressed by Building Maintenance
Portable 260- Thermostat on hold. Cancelled the hold and put it on schedule mode while on site.
Thermostat cover
Yes
Fan Mode Correct
Yes
Space Temperature Acceptable
Yes
Misc. Comments
OAAHU-1 - Appears to have a high static pressure drop reading on the filter pressure gauge. OAAHU-2- Filter pressure gauge not working, showing zero reading.

Old fan for cooling tower laying underneath the cooling tower, repeat finding.
Work Order Number(s)
222642
Issues found durring this assessment have been assigned to the above work order(s).