Questions and Answers.pdf
PDF 84 KB Posted
- Attached to
- Bldg. 221 HVAC Repairs Federal contract opportunity
- Solicitation number
- 36C25724Q0860
About this file
This document is a Questions and Answers file related to a federal contract opportunity for Bldg. 221 HVAC Repairs. The contractor will be responsible for providing labor, materials, and equipment for repairs and modifications to the long-term care facility's outside air units and hydronic systems, as outlined in the Scope of Work.
Key details include:
- No requirement for sealed drawings from a Professional Engineer, but as-built drawings must be provided
- Existing chill water lines are referred to as hydronic lines, and penetrations should be made from the top of the main line if possible
- The current Building Automation System is Johnson Controls Metasys, which uses BACnet protocol
- Dehumidification capabilities are required, but existing humidifiers must be serviced and operational
- The contractor shall submit design ideas for the fresh air duct re-design to the Contracting Officer's Representative for approval
- The contract requires providing three changes of MERV 10 air filters per unit, and maintaining a 55% +/- 2% RH setpoint
- All drains must be made of copper, and condensate pumps may be used if gravity drains are not feasible.
View the file
Other files for this federal contract opportunity
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|---|---|---|
| Questions and Answers.pdf | ||
| S02 36C25724Q0860 0001.pdf | ||
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| M-101.pdf | ||
| M-203.pdf | ||
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| M-206.pdf | ||
| MEP-103.pdf | ||
| M-501.pdf | ||
| M20B RECORD DRAWING Layout.pdf | ||
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| M-107.pdf | ||
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| MEP-100.pdf | ||
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| M40B RECORD DRAWING Layout.pdf | ||
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| M-205.pdf | ||
| M10A RECORD DRAWING Layout.pdf | ||
| M-403.pdf | ||
| M-102.pdf | ||
| MEP-102.pdf | ||
| M-202.pdf | ||
| M20A RECORD DRAWING Layout.pdf | ||
| M-405.pdf | ||
| Bldg. 221 CLC A Wing Attic Units.pdf | ||
| S02 36C25724Q0860.pdf | ||
| P07 WD 2015 - 5237.pdf | ||
| Attachment 1 Outside Air Water Source Heat Pump Schedule.pdf |
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Text version
Q: Does the contractor need to assume providing sealed drawings to the VA by a Professional Engineer (PE) to perform this work?
A: No. Design through the contractor and approved by the VA. As-built drawings for any changes to the existing drawings are required to be updated and provided with the close out documents.
Q: Will there be digned prints for this project?
A: As Builds drawings shall be provided with the close out documents of the ensuing contract.
Q: Can as-built drawing be made available?
A: Yes. Drawings were provided and uploaded with the solicitation within SAM.gov.
Q: Will all existing chill water penetrations be made from the top of the chill water pipe?
A: These are not chill water lines. The proper verbiage is hydronic lines. The top of themain line is preferred first option. If this cannot be accomplished due to existing structures, a side penetration will be submitted to the COR for approval.
Q: Who is the preferred DDC/ BAS Controls contractor?
A: Johnson Control Metasys is the current BAS.
Q: Will the existing humidifiers need to be replaced or cleaned and reinstalled?
A: Existing humidifiers will be required to be service and operational with the new units.
Q: Will new isolation valves be needed to separate the first and second floors?
A: Yes. The objective is to be able to isolate each floor of each building.
Q: Are the DOAS WSHPs connected to a building management system, automated controls or are they pre-programmed stand-alone units?
A: Yes. It is on a BAS.
Q: If connected to a building automation system – what is the brand?
A: Johnson Controls Metasys
Q: If connected to building automation system – what is the connection type? (bacnet, modbus, etc.)
A: Bacnet
Q: The SOW 1.E states “Design shall address humidity and units shall be equipped with dehumidification sequence.”, however the site visit revealed that currently, there are humidifiers installed. Do we want to install humidifiers or dehumidifiers?
A: Yes, The units shall have Dehumidification capabilities. Existing Humidifiers will be required to be serviced and operational
Q: Should the contractor provide filters or cartridge replacements for up to 12 months after installation?
A: Contract reads to Provide three (3) changes of Merv 10 Air Filters per unit for the designed filter rack
Q: What is the desired humidity setpoint range?
A: 55% RH +/- 2%
Q: SOW states all drains should be made of copper, does this apply to drains from the reheat coils, secondary drain lines and humidifiers/dehumidifiers?
A: Yes, all drains shall be of copper from the eighteen DOA Units. No drain is required for Pre Heat or Reheat coils. Humidifiers/dehumidifiers are required to be reworked in copper to allow unit to be raised.
Q: For units that do not currently have a drain line connected to auxiliary drain pan or where there is no route to adequately install a gravity drain, will a condensate pump suffice?
A: The units are to be raised so this should not be an issue. Existing conditions reflect adequate fall but any unforeseen condition shall be brought to the COR’s attention.
Q: The fresh air duct re-design should most likely be engineered.
A: No. It needs to be sized correctly!
Q: Should the VA provide engineering or should the contractor?
A: The Contractor shall submit design ideas to the COR for approval.
Q: Should contractor make the designs based upon best judgement and experience?
A: Yes. The contractor shall submit design ideas to the COR for approval.
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