36C26326Q0939 HVAC and Plumbing Repair Questions and Answers .pdf
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- Solicitation number
- 36C26326Q0939
About this file
This document is a Questions and Answers (Q&A) file addressing three clarification items related to building mechanical systems upgrades at a VA facility.
Item 8 – Building 15 AHU 1 Coil Replacement: The VA requires conversion of control valves and the steam humidifier from pneumatic to direct digital control (DDC) when new coils are installed in AHU 1.
Item 9 – Building 15 Basement AHU for AFR: The VA requires installation of a Variable Frequency Drive (VFD) to accompany the chilled water coil replacement. The VFD must be compatible with the existing fan motor specifications of 11 Amps, 7.5 HP, 1750 RPM, 3-phase, 460 volts.
Item 10 – Absorber Tower Equipment: While VFDs for Pumps 4 and 5 are scheduled for replacement, the VA does not require replacement of the inoperable CT-3 fan motor, its VFD, or the associated gear box.
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Other files
| File | Type | Posted |
|---|---|---|
| 36C26326Q0939 0001.pdf | ||
| 36C26326Q0939 0001_1.docx | DOCX document | |
| WD 2015-5005 Douglas Co.pdf | ||
| 36C26326Q0939_1.docx | DOCX document | |
| P09. HVAC and Plumbing Upgrade or Repair Project SOW.pdf | ||
| S02. 36C26326Q0939.pdf |
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Text version
1. Item 8. In Building 15, AHU 1 is getting new coils. Does the VA require the control valves and the steam humidifier be converted from pneumatic to DDC?
o Yes, the VA requires conversion of the control valves and steam humidifier from pneumatic to direct digital control (DDC).
2. Item 9. In Building 15, Basement AHU for AFR does not have a VFD. Since the Chilled water coil is getting replaced, does the VA require a VFD to be added?
o Yes, the VA requires a VFD to be installed. The VFD must be compatible with the existing fan motor rated at 11 Amps, 7.5 HP, 1750 RPM, 3-phase, 460 volts.
3. Item 10. The VFDs for Pumps 4 and 5 are to be replace for the Absorber Tower. CT-3 fan motor is currently inoperable. Does VA want a new fan motor, VFD and gear box?
o The VA does not require replacement of the VFD for the CT-3 fan motor, VFD or gear box.
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