Indoor Environmental Quality HVAC Assessment of Hollifield Station Elementary School: October 19th, 2022 (HXHSES20220000A0)

Assessor
Hummy Khan
Date
Outdoor Temperature
42°F
Relative Humidity
69%
Outdoor Dew Point
35°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
No tag numbers on a McQuay and a York rooftop unit. The exhaust fans do not 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
Deflectors & Screens
Present
Yes
No debris
Yes
Dampers
Outside air damper: no obstructions
Yes
Work Order Closed by Building Maintenance
AAON rooftop unit (ACU-1) outside air dampers 100% closed. McQuay rooftop unit (no tag number) outside air dampers (OADs) 100% open. The OADs should only be partially open (approximately 25%) while the outside air temperature is 42 deg.
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
Work Order Closed by Building Maintenance
RTU-1 and 4 - Air bypass around filter. RTU-4 - Air bypass (spacers too small).
Correct size
Yes
Work Order Closed by Building Maintenance
RTU-1- Incorrect size filter on the lowest filter rack causing air bypass.
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
Work Order Closed by Building Maintenance
York RTU (no tag number) condensate drain improperly terminated.
Fans and Motors
Check OK Comments
Condition
Operational
Yes
Work Order Closed by Building Maintenance
RTU-1, RTU-2, RTU-6 and RTU-8 - Return/exhaust fan not running. Exhaust fans (no tag number) near RTU-7, near RTU-1, near RTU-8 and few other exhaust fans not running. All exhaust fans should be checked for proper operation.
No unusual odors, noise, or vibration
Yes
Work Order Closed by Building Maintenance
Exhaust fan (no tag number) near the roof access hatch rattling and another near RTU-4 vibrating.
Central Plant
Check OK Comments
Chilled Water Central Plant
Chiller operational
Yes
Turned off 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 71- Heating set point at 65 deg., too low and should be at least 68 deg.
Thermostat cover
Yes
Fan Mode Correct
Yes
Space Temperature Acceptable
Yes
Misc. Comments
Inconsistency on the position of the inlet vanes from one unit to the other. On some units inlet vanes 100% open and on others 100% closed while on others partially open. For example, RTU-7, inlet vanes on supply fan 100% open and RTU-4, 6, and 7 on return/exhaust fans100% closed.
Work Order Number(s)
258896
Issues found durring this assessment have been assigned to the above work order(s).