Indoor Environmental Quality HVAC Assessment of Centennial Lane Elementary School: December 16th, 2021 (HXCLES2021000062)

Assessor
Hummy Khan
Date
Outdoor Temperature
46°F
Relative Humidity
73%
Outdoor Dew Point
38°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
Some units are tagged as RTU and others are tagged as AHU, and some units do not appear to have any tag numbers. For example, two rooftop units (RTU) near AHU-6 and one near AHU-5 do not appear to have tag numbers. On one unit tag number is hand written as #8 but very hard to see. No tag number on one exhaust fan near AHU-8.
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
Lot of inconsistency on the position of the outside air dampers (OADs) from one unit to the other. On some units OADs appear to be 100% open while on other units the OADs are partially open, and on some units they are closed. For example, AHU-3, AHU (no tag number located near AHU-5) and RTU-13 OADs 100% open. AHU (no tag number located near AHU-6) OADs open. but less in comparison. RTU-12 - 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
Work Order Closed by Building Maintenance
AHU-6 - Top filter rack has air bypass around filters. AHU-4 both top and bottom filter racks has air bypass around filters.
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
No initials on the filters of the installing technician on any 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
Yes
Fans and Motors
Check OK Comments
Condition
Operational
Yes
Work Order Closed by Building Maintenance
Exhaust fan located near AHU-8 (no tag number) - Not running.
No unusual odors, noise, or vibration
Yes
Central Plant
Check OK Comments
Heating Central Plant
Boiler operational
Yes
Portable(s)
Check OK Comments
Thermostat
Thermostat setting acceptable
Yes
Thermostat cover
Yes
Fan Mode Correct
Yes
Space Temperature Acceptable
Yes
Misc. Comments
Portable # 90 and 230 - Thermostats screen display message says "alarm" " change air filter". Portable # 149- System in heat mode and should be in Auto mode.
Work Order Number(s)
219431
Issues found durring this assessment have been assigned to the above work order(s).