24R0006-Replace B1776 HVAC-QA.pdf

FA6675-24-R-00XX

Replace B1776 HVAC Questions and Answers 08/05/2024

Q1: Are there payment or performance bonds required?

A1: Yes. Block 12a on the SF1442 indicates that the contractor must provide performance and payment bonds within 10 calendar days after award.

Q2: 1.1.1_ Will the Military dispose of any recovered refrigerant or oils?

a. If yes, will they provide recovery cylinders and oil containers?

A2: Government will dispose of any refrigerant and oil.

a. Government will provide recovery containers and oil containers.

Q3: Can you provide building HVAC drawings to include current as built drawings?

A3: Three (3) drawings are attached (M102, HVAC System and New Construction).

Q4: Can you provide HVAC drawings for original DX split system layout, design prior to VRF unit that is currently installed?

A4: Three (3) drawings are attached (M102, HVAC System and New Construction).

Q5: Is there a specific equipment manufacture requested (Trane, Carrier, Goodman, etc.)?

A5: Government does not have a requirement for a specific equipment manufacture.

Q6: 2.1.1- Do we need to include an electric auxiliary heat strip with each heat pump unit for low ambient supplemental heating/ system defrost?

A6: Electric auxiliary heat strips will not be required per UFC 3-410-C, section 3-7.6 change 9, 09 Jan 2024.

Q7: What is outdoor condenser pad requirements for equipment that will not fit on existing concrete pad? Can we use light weight concrete pads?

A7: The use of light weight concrete pads will be permitted if equipment will not fit on existing concrete pads.

Q8: Will the requested statement of work for this building be designed by a professional Engineer to perform building heat load calculations, calculate required minimum outside air requirements, and new ductwork layout/ sizing, etc..

a. The SOW requests removing three (3) systems and going back with four (4). This creates four separate control zones, how will these areas be defined?

b. 2.1.8_T&B testing of air system- Will Engineering be providing design documents for the system to be balanced to? Need to know design required airflow for each area derived from heat load calculation performed

A8: The SOW will not need to be designed by a professional Engineer. Government will provide HVAC plan from previous design.

a. Government will provide original HVAC Drawing that can be used to define zones

b. Government can provide Pre-VRF system design that showed CFM's for the building.

Q9: 2.1.7- Are thermostats okay or is there a specific brand/ model required? We can just propose with standard programable stats if you want with justification. No Bacnet option since EMS does not exist in the building now. If it were added in the future the installing contractor would select best thermostat that works with their system anyway.

A9: Standard Programmable Thermostats are all that is required.

Q10: 1.1.4_ Can existing duct work be reused if in good condition as apposed to complete replacement.

(cost savings and time reduction for install)

A10: Use of existing ductwork can be used provided it is in good condition.

Q11: Is there a preferred roofer that needs to be used for any roofing work to maintain any active warranties that may be in place?

A11: No active warranties exist on the roof.

Q12: Section 4.12 Schedule of Submittals- Does the time needed to complete any required submittals approvals count towards the 90 day completion timeline defined in section 4.15?

A12: Closeout and Operation & Maintenance manuals can be provided after the work ends.

Q13: Section 4.15_ Time of Completion-

a. Are there liquidated damages if work exceeds 90 days?

b. When does the 90 day count down start, after submittal approval? After equipment estimated available date?

c. If Engineering will be done on this building will allowances be made for this time requirement needs?

A13:

a. Yes. See 52.211-12 in the SF1442. Also, note that Block 11 on the SF1442 states that the period of performance is negotiable and not mandatory. Also, see Sub Factor 1, Element 3 under VOLUME I- TECHNICAL for the length of the proposed schedule.

b. See Block 11 on the SF1442 that states that the contractor shall begin performance within 10 calendar days after receiving the notice to proceed.

c. See Sub Factor 1, Element 3 under VOLUME I-TECHNICAL in the SF1442 for the length of the proposed schedule.

Q14: 1.1.7_ Is there a preferred service contractor that needs to be used for the fire life safety system wor

A14: Government does not have a preferred fire life safety service contractor.