Indoor Environmental Quality HVAC Assessment of Lake Elkhorn Middle School: November 18th, 2021 (HXLEMS202100005C)

Assessor
Hummy Khan
Date
Outdoor Temperature
54°F
Relative Humidity
77%
Outdoor Dew Point
46°F

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

Unit
Check OK Comments
Tag Number
Displayed
No
No tag numbers on any exhaust fans. This is a repeat finding and has been reported multiple times as part of previous inspections.
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
Deflectors & Screens
Present
Yes
No debris
Yes
Dampers
Outside air damper: no obstructions
Yes
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
No
On majority of rooftop units some of the screws on the end cover plates for the filters are missing, creating air bypass around filters. All filters end cover plates should be properly screwed in to hold filters in place and prevent any air bypass. ACU-2- Filter end cover plate is standing in the middle of air flow path creating restrictions. It should be installed on the end of the filter bank. ACU-12 - Air bypass around filters.
Correct size
No
ACU-12- Appears to have incorrect size filters creating air bypass.
Free from excessive loading, dampness or odor
Yes
Not collapsed/not fallen off
Yes
Present (not missing)
Yes
Date and initials written
No
ACU-12 no filters installation date and name initials of the installing technician on the filters.
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
No
All RTUs - No condensate drain piping. ACU-11 - Piping not terminated all the way to the roof drain.
Fans and Motors
Check OK Comments
Condition
Operational
No
Exhaust fan near ACU-9- Not running.
No unusual odors, noise, or vibration
No
ACU-4 - Noisy. Exhaust Fan (EF) near ACU-13 and near ACU-12 (spray painted NW on it) - Vibrating.
Central Plant
Check OK Comments
Chilled Water Central Plant
Chiller operational
No
Not operational due to heating season.
Cooling tower operational
No
Not operational due to heating season.
Heating Central Plant
Boiler operational
Yes
Portable(s)
Check OK Comments
Thermostat
Thermostat setting acceptable
No
Portable 28- Incorrect heat set point of 57 deg. Should be 70 deg. Portable 130- Incorrect system mode "Cooling" should be in "Auto". Also incorrect cooling set point "71" deg. should be 74 deg. F.
Thermostat cover
No
Portable 130- Front thermostat cover missing.
Fan Mode Correct
Yes
Space Temperature Acceptable
Yes
Work Order Number(s)
216518
Issues found durring this assessment have been assigned to the above work order(s).