Q and A.pdf

PDF 207 KB Posted

Attached to
Construction - Locker Room HVAC Federal contract opportunity
Solicitation number
N6660421Q0191
Issued by
Department of the Navy Naval Sea Systems Command

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N6660421Q0191 Amendment 0003.pdf PDF
Attachment_3_USE OF MASKS AND OTHER PUBLIC HEALTH MEASURES OSD000860-21 RES FINAL.pdf PDF
N6660421Q0191 Amendment_0002.pdf PDF
N6660421Q0191 Amendment_0001.pdf PDF
Attachment_2_ Covid Questionare.pdf PDF
Attachment_4_ 52.204_24 COMPLETE AND RETURN.pdf PDF
Attachment_3_ DOD-GUIDANCE-ON-THE-USE-OF-CLOTH-FACE-COVERINGS.pdf PDF
N6660421Q0191.pdf PDF

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Q: I am running into a little road block on the makeup air unit you are looking for at B-80 . I have reached out to several vendors and they are telling me that they can get down to the CFM for a packaged RTU . The smallest Greenheck makes goes down to 800 CFM .

Do you have a brand that you had referenced with your criteria or was this schedule made from you requirements in the engineering ??

A: The design was not developed on the basis of a specific make or model, the schedule was developed from the space requirements. That said I am familiar with the Green Heck line of energy recovery ventilators, and recognize that the lowest listed flow rates are in excess of our requirement. This is typically the case when addressing HVAC requirements for small rooms/areas. The design assumption was that while a larger overall RTU size would likely be utilized, the fan speed would be adjusted to attain the lower flowrate required by the design either by adjusting the fan/motor sheave sizes or installing a variable frequency drive (VFD) on the motor.

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