Amend 0004 Continuation Sheet.pdf
PDF 262 KB Posted
- Attached to
- Chiller Replacement 19, 321, AS255, FC300, HP513
- Solicitation number
- N4008525R2548
About this file
This is an Amendment 0004 Continuation Sheet containing questions and answers related to a chiller replacement project (N40085-25-R-2548). The document addresses technical queries about chiller specifications and requirements across multiple buildings including FC300, Bldg. 19, AS225, HP513, HP321, HP19, and AS255.
Key clarifications include: contractors should match performance data from existing unit data plates for several chillers, metric unit conversions for AS225 are confirmed (335.2 GPM, 54F EWT, 45F LWT), both primary and secondary pumps need replacement at HP321 but no VFDs are required, the chilled water pump for HP19 is located in 19B Mech Room, both pumps at AS255 need replacement, no bollards are needed at FC330, the contractor must remove the temp chiller at HP513 and transport it to the Government Lay-Down Yard, and the government will remove a tree at building 321 prior to chiller placement.
View the file
Other files
Show all 11
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
N40085-25-R-2548 Amendment 0004
CONTINUATION SHEET
1. QUESTION: The chiller schedule for FC300 shows an 80 ton chiller with a flow of 180 GPM and a 12 degree delta T. This correlates to a 90 ton chiller. Can we confirm the tonnage, flow, and EWT/LWT for this building?
ANSWER: Please provide a chiller to match the performance data listed on the data plate of the existing unit.
2. QUESTION: The chiller schedule for Bldg. 19 is not included in the provided plans. Can we get the required flow, EWT and LWT to make a valid selection?
ANSWER: Please provide a chiller to match the performance data listed on the data plate of the existing unit.
3. QUESTION: The chiller schedule for AS225 is in metric units. Can we assume the following data is correct? 335.2 GPM, 54F EWT, 45F LWT.
ANSWER: Yes, your conversions are correct.
4. QUESTION: The chiller schedule for HP513 shows a 110 ton chiller with a maximum flow of 231 GPM and a 12 degree delta T. This correlates to a 115.5 ton chiller. Can we confirm the tonnage, flow, and EWT/LWT for this building?
ANSWER: Please provide a chiller to match the performance data listed on the data plate of the existing unit.
5. QUESTION: Bldg. HP321
a. We have primary chilled water pump and secondary loop pump. If needed, do we need to replace both pumps or one pump?
b. No existing VFDs do we need to add them.
ANSWER:
a. Yes
b. No
6. QUESTION: Bldg. HP19
a. The drawing provided did not show the chiller schedule information, please provide
b. Need to confirm that mech room 19B is for building HP19, per print M-11 CHW pump is located in building HP19 but during site walk CHW pumps were located in building 19B, Please confirm that the there is no pumps in building 19.
ANSWER:
a. Please provide a chiller to match the performance data listed on the data plate of the existing unit.
b. The chilled water pump in 19B Mech Room is the only Chilled Water Pump. There is no Chilled Water Pump in HP19.
7. QUESTION: Bldg. AS255
a. No VFDs Please advise if we need to add them.
b. Are both pumps needed to run the chiller?
c. Pumps in the building are very old. How do we know that existing CHW pumps are functioning properly?
ANSWER:
a. No.
b. No, one is for the Primary Loop and the other is for the Secondary Loop.
c. Replace both.
8. QUESTION: Will bollards be needed to protect piping at FC330?
ANSWER: No.
9. QUESTION: Is the contractor responsible for removing temp chiller at HP513?
ANSWER: Yes. The chiller will need to be transported to the Government Lay-Down Yard on Railroad Road (near 1005).
10. QUESTION: There is a tree directly in front of the chiller at 321. Is that tree to be removed?
ANSWER: The tree will be removed by the Government, prior to chiller placement.
11. All other terms and conditions remain unchanged.
File details come from the government source that posted it. Updated .