Indoor Environmental Quality HVAC Assessment of Ellicott Mills Middle School: December 2nd, 2020 (HXEMMS2020000023)

Assessor
Hummy Khan
Date
Outdoor Temperature
46°F
Relative Humidity
43%
Outdoor Dew Point
25°F

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

Unit
Check OK Comments
Tag Number
Displayed
No
None of the exhaust fans have tag numbers on them.
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
No
AHU-4 and 5 - Outside air dampers appear to be 100% closed.
Return air damper: no obstructions
No
AHU-2 - Return air dampers appear to be 100% closed.
Mixing Plenum
Check OK Comments
Clean
No excess dirt, not used for storage
No
AHU-4- Two chairs and three box filters stored on top of return air opening inside the unit blocking the airflow. AHU-3 fan motor extremely dirty.
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
Correct size
Yes
Free from excessive loading, dampness or odor
Yes
Not collapsed/not fallen off
Yes
Present (not missing)
Yes
Date and initials written
Yes
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
No
Many exhaust fans not running. Three exhaust fans near AHU-4 not running. Also three more exhaust fans near AHU-3 not running. Several exhaust fans near OAHU-1 and 2 are not running.
No unusual odors, noise, or vibration
Yes
Central Plant
Check OK Comments
Chilled Water Central Plant
Chiller operational
Yes
Chiller not operational due to heating season.
Heating Central Plant
Boiler operational
Yes
Portable(s)
Check OK Comments
Thermostat
Thermostat setting acceptable
No
Portable #124 and 125 - Motion sensor does not appear to be working and maintaining occupied set point of 70 deg. Portable # 125 "Replace battery" message on thermostat display screen. Portable # 186, 209, 221, 222, 223- Do not appear to have motion sensors installed and maintaining occupied set point of 70 deg.
Thermostat cover
Yes
Fan Mode Correct
Yes
Space Temperature Acceptable
Yes
Misc. Comments
Work Order: 175351
Work Order Number(s)
175351
Issues found durring this assessment have been assigned to the above work order(s).