28 Engineered Systems August 2011

BY AMANDA MCKEW

Date: August 2011Building: HospitalFloor: RoofYear installed: 2000Inspected by: AEMSerial number: 111010293Equipment Type: Constant volume AHUManufacturer: X-Y-ZModel: DT-111Size: 15,400 cfmHp: 40Volts: 460/3/60

EXISTING CONDITIONS AND DEFICIENCIES

STANDARDS AND CODE ISSUES

ENERGY CONSERVATION

NOTES

AHU ASSESSMENT: CAHU-1

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Y N NA Y N NA❑ ❑ ❑ Does unit meet current codes? ❑ ❑ ❑ Does unit/system meet current energy code?

❑ ❑ ❑ Is emergency power a requirement?

Y N NA Y N NA❑ ❑ ❑ End of USL, replace with higher efficient unit/fill? ❑ ❑ ❑ Consider occupied/unoccupied modes?

❑ ❑ ❑ Can unit/system be retrofitted to meet latest energy code?

1. Can unit be readily removed/replaced/renovated? 4. Are unit controls interactive with building ATC/computer?

2. Does unit operate 24/7 year-round, occupied/unoccupied, or seasonally? 5. Are there energy meters for gpm, electrical, and/or airflow consumption?

McKew is a senior project engineer with InterPro Solutions. Reach her at amckew@interprosoft.com.

CARBON FOOTPRINTCarbon Neutral

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Y N NA Y N NAHVAC HVAC (continued)

❑ ❑ ❑ Are the unit enclosure and ductwork in good condition? ❑ ❑ ❑ Is there access around equipment?

❑ ❑ ❑ Are there signs of air leaks in ductwork/insulation? ❑ ❑ ❑ Overall, is the unit clean, and without vibration or noise?

❑ ❑ ❑ Are there pre-filters, final filters, and after-filters in place? ❑ ❑ ❑ All ATC devices appear in good condition?

❑ ❑ ❑ Are the filters clean and are there magnehelic gages at filter bank(s)?

❑ ❑ ❑ Are there sufficient working pressure gauges? ELECTRICAL

❑ ❑ ❑ Are there sufficient temperature sensors? ❑ ❑ ❑ Is it a high-efficiency motor?

❑ ❑ ❑ Are temperature sensors reading accurately? ❑ ❑ ❑ Is there a localized disconnect?

❑ ❑ ❑ Are there signs of water leaks in piping/insulation? ❑ ❑ ❑ Does the unit have VSD fans?

❑ ❑ ❑ Are valves around unit in good condition?

❑ ❑ ❑ Are there high-efficiency motors on the fans? PLUMBING

❑ ❑ ❑ Is there energy recovery in place? ❑ ❑ ❑ Are there localized drains to serve the unit?

❑ ❑ ❑ Are there VFDs installed on the unit fans?

❑ ❑ ❑ Are there valve tags and a valve chart? MAINTENANCE

❑ ❑ ❑ Are drain lines piped directly to drains? ❑ ❑ ❑ System flow diagram mounted by unit?

❑ ❑ ❑ Is duct and piping insulation in good condition? ❑ ❑ ❑ O&M manual secured at unit or on file?

❑ ❑ ❑ Is there vibration isolation on the unit? ❑ ❑ ❑ Workorder last completed?

❑ ❑ ❑ Is there freeze protection in place? ❑ ❑ ❑ Is there a service contract for the pump?

❑ ❑ ❑ Are all of the dampers functioning? ❑ ❑ ❑ Predictive maintenance (vibration analysis, etc.) last completed?

END OF EQUIPMENT USEFUL SERVICE LIFE (USL)

USL (YRS) USL (YRS)12 Motor is x years old 20 USL benchmark is _

12 Controls are x years old 16 USL benchmark is _

12 Condenser fans are x years old 20 USL benchmark is _

12 Unit is x years old 20 USL benchmark is _

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