RFIs 4.docx
DOCX document 19 KB Posted
- Attached to
- Replace Rooftop AC Unit, Laurel, MD
- Solicitation number
- 12639525R0023
About this file
This document is a Request for Information (RFI) for a USDA-Animal and Plant Health Inspection Service construction project to replace an air handling unit at the National Center for Applied Plant Protection in Laurel, MD. The solicitation (12639525R0023) is set aside exclusively for small businesses in the 238220 NAICS code with a $19 million size standard, and the project is estimated to cost between $500,000 and $1 million.
The RFI specifically requests technical details about the existing York DR180 air handling unit, including electrical specifications (200 Amp, 3 Phase, 2470V with #4 wire, additional 100 and 50 amp disconnects) and system configuration. The current unit is a 15-ton model (DR180C00P2BZZ20001C) with a hydronic reheater and no direct gas service. The contracting officer is Jim Roloff, who can be reached at james.g.roloff@usda.gov, and interested parties are responsible for monitoring the site for potential amendments.
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Other files
| File | Type | Posted |
|---|---|---|
| RFIs and Responses 3.docx | DOCX document | |
| Site visit sign-in sheet.pdf | ||
| RFIs and Responses 2.docx | DOCX document | |
| RFIs and Responses.docx | DOCX document | |
| Atch 2_Federal Construction Wage Rates_PG County.pdf | ||
| Atch 1_SOW_York Rooftop Unit Replacement.docx | DOCX document | |
| 12639525R0023.pdf |
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Text version
Solicitation 12639525R0023
1. Electrical Requirements
0. Please provide the existing electrical service specifications for the York DR180 unit (voltage, phase, breaker size, feeder size).
Main breaker is 200 Amp. 3 Phase, 2470V with #4 wire, there is also a 100 amp, 240V 3 phase disconnect in-line to the unit. On the unit is a 50 amp, 240 volt 3 phase breaker.
0. Please provide the existing gas line size and pressure serving the current RTU to ensure compatibility with the new unit.
No gas service is provided to the current unit. The heating section of the system is controlled by a common hydronic Reheater in discharge of the unit and individual VAV with hydronic and electrical heaters in serviced spaces.
1. Performance Basis
1. The SOW notes the existing York DR180 unit has a nominal capacity of 15–25 tons. Can USDA confirm the exact tonnage/model number of the current unit that is to serve as the basis of design for replacement?
The Current unit is a 15-ton unit. Model number: DR180C00P2BZZ20001C
File details come from the government source that posted it. Updated .