Questions Bldg.80 HVAC Replacement-W50S9323B0002.pdf
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- Solicitation number
- W50S9323B0002
- Issued by
-
Department of the Army National Guard
About this file
This document contains questions and answers regarding Solicitation Number W50S9323B0002 for the Bldg. 80 HVAC Replacement project at the 156th Wing of the Puerto Rico Air National Guard. The solicitation requires replacement of the entire cold water piping located exterior to the isolation valves and chiller, as well as replacement of all three air handling unit coils and magnetic starters with variable frequency drives. Bidders are advised to provide air side balancing in addition to water side balancing as specified. The scope of work also includes cleaning and sanitizing all interior supply and return ductwork as well as coils, and applying an anticorrosion treatment to the chiller coils. Plans and specifications are not provided with the solicitation, but UFC and UFGS specifications related to the HVAC system are referenced in the statement of work.
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Questions TUMR Repair Bldg. 80 HVAC System Replacement W50S9323B0002
BLD 80 New HVAC Sow does not address any Automatic controls.
QUESTIONS:
1. Does the building has a functional BMS?
Answer: No.
2. Does the building HVAC System constant Volume of Variable Volume?
3. Solicitation SOW only calls for wates side balancing only. How about air side?
Answer: Yes.
4. Please clarify item 5.3 cleaning internal supply and return of all 3 units. Does this mean duct distribution inside building space?
Answer: Yes, as in 5.4 it reads, “Clean and sanitize all ductwork to include supply and return ducts”. We just want to emphasize with 5.3 to include the supply and return ducts inside the mechanical rooms.
5. Item 5.2.4 Adsil Anticorrosion treatment for the coils. Does this apply only for the chiller Coils or the government intention is to include the AHU Coils as well as a custom option on the AHU's?
Answer: All the coils.
6. Item 5.2.1 calls for replacing entire line of Cold water, does this means all cold piping running inside building to the AHUs and Pump? or just the exterior portion from the isolation valves to the chiller?
Answer: Just the exterior portion from the isolation valves to the chiller.
7. Item 5.2.2 calls for 3 AHUs with magnetic starter and VFD, why the duplicity of equipment when VFD can be commanded thru BMS to operate. If building is equipped with a BMS.
8. In order to quote we would need a copy of the plans and specifications. Is this something you are going to include on Sam.gov website?
Answer: -Government doesn’t include a set of plans other than the building existing layout. Section 8.15 of the SOW includes UFC and UFGS specifications related to the HVAC System.
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