Indoor Environmental Quality HVAC Assessment of Howard High School: March 18th, 2022 (HXHOHS2022000079)

Assessor
Hummy Khan
Date
Outdoor Temperature
54°F
Relative Humidity
80%
Outdoor Dew Point
48°F

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

Unit
Check OK Comments
Tag Number
Displayed
Yes
Work Order Closed by Building Maintenance
Three Trane rooftop units do not appear to have tag numbers.
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
Work Order Closed by Building Maintenance
OAHU-4- Screws missing and rusted on one of the access door's hinges and the door is very loose.
Deflectors & Screens
Present
Yes
No debris
Yes
Dampers
Outside air damper: no obstructions
Yes
Work Order Closed by Building Maintenance
Inconsistency on the position of the outside air dampers (OADs) from one unit to the other. On some units OADs appeared to be 100% open while on others OADs partially open. For example, AHU-1-OADs are 100% open while on AHU-5 and ACU-1 OADs are less open. ACU-2 (Addison unit) - OADs closed.
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
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
Work Order Closed by Building Maintenance
Majority of the units' filters do not have initials on the filters 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
Work Order Closed by Building Maintenance
Three Trane RTUs (no tag numbers) - Broken or improperly terminated condensate drain line.
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
Central Plant
Check OK Comments
Chilled Water Central Plant
Chiller operational
Yes
Not operational due to heating season.
Cooling tower operational
Yes
Not operational due to heating season.
Heating Central Plant
Boiler operational
Yes
Portable(s)
Check OK Comments
Thermostat
Thermostat setting acceptable
Yes
Work Order Closed by Building Maintenance
Portable 52- Space temperature 79 degrees. Space temperature should not be more than 74 degrees. Thermostat was on "Hold" and system on "Heat" mode. Removed the "Hold" and changed it to the correct mode "Auto" while on site.
Thermostat cover
Yes
Work Order Closed by Building Maintenance
Portable 124- Thermostat cover missing.
Fan Mode Correct
Yes
Space Temperature Acceptable
Yes
Misc. Comments
A condensing unit for a small ductless split system is sitting on the roof and still appeared to be in original packaging and not installed, repeat finding.
Work Order Number(s)
229021
Issues found durring this assessment have been assigned to the above work order(s).