Questions and Answers_Romney WV USARC UST Removal and HVAC Upgrade.pdf

Questions and Answers: Solicitation # W15QKN-21-R-5042 – Romney WV USARC UST Removal and HVAC Upgrade.

1. 11.5.2.1. What is meant by “Upon removal the entire system shall be flushed”?

A: Upon removal of the existing boilers in both building any and all hot water loops are to be completely flushed and clean

2. 11.5.2.3. Demo One AHU from Mechanical room and One from Drill Hall.

Is this referring to the condensing units outside of those areas? If so, where are the indoor units located?

A: No this is referring to the AHU’s. Which the two condensing units are part of and are to be replaced with the AHU’s.

3. 11.6.2.1. Says to install Two new Air Handling Units, One in the boiler room and One in the Drill Hall.

What areas will each serve and what is the square footage of these areas?

A: There are AHU’s located in the drill hall ceiling and in the mechanical room.

These AHU’s are to be removed completely and then replaced with new. Sized to match what was existing.

4. 11.6.2.3. Concerning the two boilers in the Training center. I could not locate information tags/plates.

Please provide all information necessary to size replacement boilers.

A: There is no data plate on this boiler. The size can be determined by running the calculations from the size of the burner’s and burner information.

5. 11.6.2.8. Mini split system for room 114. What is the square footage of the area this unit will serve?

A: It is the contractor’s responsibility to size the unit to meet the demand of the room. Para 11.6.2.8. Therefore the contractor has to measure the room that is to be serviced. In this case room 114. The government cannot provide this.

6. Reference 11.5.2.8: The replacement boiler(s) will fit on the existing concrete slabs. Can existing concrete pads be reused?

A: Yes

7. Reference 11.4.9: The State of West Virginia does not regulate consumptive use heating oil tanks. Accordingly, a class B certification is not required. Can this be waived?

A: Yes this can be waived. However Closure reports, sampling reports and all disposal documents are still required.

8. Reference 11.6.2.1: The existing condensing units use outdated refrigerant. Shall the new air handling units be provided with coils suitable for modern condensing units or the existing condensing units?

A: Yes as the condensing units are part of the AHU package and are to be replaced.

9. Reference 11.6.2.3/11.6.2.4:

a) The is not an existing air/dirt separator in either mechanical room. One is necessary to remove entrained oxygen and dirt. Shall we provide and install one in each mechanical room?

b) Shall we connect to the existing supply and return piping, or repipe the mechanical room using primary/secondary piping per the manufacturer’s recommendations? It is likely the boilers will never achieve maximum efficiency without repiping them.

A: Re-pipe as per manufacturer recommendations

10. Reference 11.6.2.5: Since the existing flues are being capped, shall each boiler be vented using appropriate material through the side wall of the mechanical room? Shall we also provide a combustion air pipe through the side wall in lieu or relying on the louvers (which appear to be undersized) ?

A: Yes to both

11. Reference 11.6.1.3: Can you please specify the propane tank size? Contractors could provide wide ranging sizes thereby affecting total proposal costs.

A: Please refer to paragraph 11.6.1.3. for sizing. It is the contractor’s responsibility to size accordingly

12. Reference 11.5.2.1: Can you provide a specification for the cleaning and flushing of the

HVAC system?

A: Industry standard

13. Reference 11.7.3: Are the control valves on the air handlers and VAV boxes functional?

A: These are to be replaced when the AHU’s are replaced

14. (11.7.3.1) States that the DDC controllers shall communicate via BACnet protocol and shall be fully programmable through the Honeywell WEBS N4 software.

(11.7.3.6) States that the contractor shall install a VYCON Jace 8000 running Niagara 4.9.

Is VYKON N4 software or Distech N4 software acceptable? Both Systems are fully Programmable, fully open software.

A: VYKON is the approved software

15. The spec refers to BACNET protocol, is that BACNET MSTP or BACNET IP?

A: Either is acceptable

16. (11.7.3.4.) refers to installing a new communication link between the buildings via fiber or ethernet. Is the fiber cable existing or does new fiber need to be installed?

If the fiber is not existing can the communication link between the buildings be BACNET

MSTP?

A: Paragraph 11.7.3.4. does not state fiber or either. It states Ethernet to fiber to Ethernet. There is no known existing fiber pathway. One will need to be installed.

17. Can Distech unit controllers be used in instead of Honeywell as long as the programming support software is loaded onto the Jace?

A: No

18. (11.6.1.3.) Sizing the new tanks on the btu and square footage, how long do they want the tanks to last a month, 3 months, 6, months in between fill ups?

A: 6 Months

19. (11.6.2.1.) Installing the new air handlers do they want new AC condensers and refrigerant lines?

20. (11.5.2.3.) The boiler in OMS building has 2 pumps instead of 1 as stated. How many to go back with?

A: Two

21. (11.5.2.4) When removing the glycol feeder does the glycol stay on site or we remove it?

A: No the contractor shall dispose of. Disposal reports are required.

22. Can we install (5x5) 3-1,000-gallon propane tanks together for the main building? The Load calculations on the btu and square footage of the building we need 3,000 gallons worth of propane.

A: No it is to be 1 tank for each building sized to last 6 months before needing to be refilled.