Attachment 2 - Specifications - Replace Air Handling Unit - 10AUG2023.pdf
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- Attached to
- Replace Air Handling and Condensing Unit Federal contract opportunity
- Solicitation number
- 12305B23R0038
About this file
This document provides minimum performance specifications for replacing an air handling unit and associated condensing unit for the Department of Agriculture Agricultural Research Service Field Research Implementation and Information Delivery Northeast Area. The specifications require a packaged air handling unit no larger than 46" x 132" x 42" that provides a minimum of 2,190 CFM airflow and associated static pressures. Heating must be provided by a 38kW electric heating coil. Cooling must be provided by an air-cooled condensing unit and associated refrigeration components sized to deliver a minimum of 182MBh total and 96MBh sensible cooling. The condensing unit must be no larger than 38" x 90" x 42". Electrical components are required to operate from existing breakers. The solicitation number and opportunity type indicate this is a request for proposals to replace the specified air handling and condensing units.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| 12305B23R0038.pdf | ||
| Attachment 3 - As-Built Drawings - Replace Air Handling Unit - 07OCT1998.pdf | ||
| Attachment 1 - SOW - Replace Air Handling Unit - 14AUG2023.pdf | ||
| Attachment 5 - Submittal Registry - 14AUG2023.pdf | ||
| Attachment 6 - WD Kent County DE Building DE20230007 - 04AUG2023.pdf | ||
| Attachment 4 - USDA Forms - 02AUG2023.pdf |
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Text version
August 10, 2023
DSU Air Handler replacement Minimum Performance Specifica ons
Package Air Handling Unit (AHU) with integral base frame shall not exceed 46” w x 132” lx 42” H. Shall be
UL listed and outdoor service. It shall Internal surfaces shall be galvanized. R13 minimum insula on. It shall include a fan sec on, mixing sec on, hea ng sec on, cooling sec on, and discharge sec on. Unit shall include service panels for all maintained components.
The fan sec on shall provide 2190CFM and 2.663 in H2O sta c pressure minimum. The motor shall be
208/230V 3‐phase. Efficiency shall be 85% minimum. Motor shall be suitable for VFD service. FLA shall not exceed 10A and shall be fed from exis ng 15A breaker.
Mixing sec on shall include parallel blade dampers and 2” pleated MERV 8 filter. Pressure drop through mixing sec on and filter shall not exceed .85 in H2O.
Hea ng sec on shall be electric providing 38kW minimum. It shall be 460V 3PH with SCR staged control.
FLA shall not exceed 50A and shall be fed from exis ng 60A breaker. Maximum pressure drop shall be
.105 in H2O.
Cooling sec on shall u lize R‐410A refrigerant and provide 182MBh total cooling and 96 MBh sensible cooling minimum. It shall discharge 55F dry bulb/ 54.4F wet bulb air based on 95F dry bulb/78F wet bulb entering air condi ons. Pressure drop shall not exceed .56 in H2O. It shall be provided with a condensa on drip pan and trapped drain. Condensing units shall be air cooled, sized to match the cooling sec on, and shall not exceed 38” W x 90” l x 42” H. Condensing unit shall be 208/230V 3ph and draw no more than 26FLA and shall be fed from exis ng breaker.
Discharge sec on shall have a maximum pressure drop not to exceed 0.16 in H2O. Discharge shall be rectangular.
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