36C24824Q0301 0001.docx

5. PROJECT NUMBER (if applicable)

CODE

7. ADMINISTERED BY

2. AMENDMENT/MODIFICATION NUMBER

CODE

6. ISSUED BY

8. NAME AND ADDRESS OF CONTRACTOR

4. REQUISITION/PURCHASE REQ. NUMBER

3. EFFECTIVE DATE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED

PAGE OF PAGES

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED

BPA NO.

1. CONTRACT ID CODE

FACILITY CODE

CODE

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

E. IMPORTANT:

is extended,

(a) By completing Items 8 and 15, and returning __________ copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY is not extended.

12. ACCOUNTING AND APPROPRIATION DATA

(REV. 11/2016)

is required to sign this document and return ___________ copies to the issuing office.

is not, A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER NO. IN ITEM 10A.

15C. DATE SIGNED

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER

Contractor

16C. DATE SIGNED

14. DESCRIPTION OF AMENDMENT/MODIFICATION

16B. UNITED STATES OF AMERICA

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER

16A. NAME AND TITLE OF CONTRACTING OFFICER

15B. CONTRACTOR/OFFEROR

STANDARD FORM 30

PREVIOUS EDITION NOT USABLE

Prescribed by GSA - FAR (48 CFR) 53.243 (Type or print) (Type or print) (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

(Number, street, county, State and ZIP Code) (If other than Item 6) (Specify type of modification and authority) (such as changes in paying office, appropriation date, etc.)

(If required)

(SEE ITEM 11)

(SEE ITEM 13)

(X)

CHECK

ONE

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS,

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

(Signature of person authorized to sign) (Signature of Contracting Officer) 516-24-1-5105-0002 36C248 Department of Veterans Affairs Network Contracting Office 8 (NCO 8) 10,000 Bay Pines Blvd Bay Pines

FL

33744 36C248 Department of Veterans Affairs Network Contracting Office 8 (NCO 8) C.W. Bill Young VA Medical Center 10000 Bay Pines Blvd.

Bay Pines

FL

33744 To all Offerors/Bidders

36C24824Q0301 02-12-2024

X X X

RFQ Closes: 02/21/2024 at 13:00PM EST 516-3640162-5105-854100 Recurring Maintenance a-2670 Maintenance Supplies and-010050192 X The purpose of this amendment is to post responses to questions posed.

***Q&A window will close on 02/14/2024.***

Moneque Rodriguez Contracting Officer The purpose of this amendment is to post the responses to the questions posed. ***Q&A window will close 02/14/2024. ***

Q&A

1. We will need to know if these are pumps/fans/variable torque loads or constant torque loads.

The VFD’s will serve as the power source between the main service panel and fan motors of each air handler, the load varies during a power outage or voltage drop, the fans will constantly run at a set parameter within the VFD.

2. We also need to know the required short circuit rating desired e.g 65KAIC, etc. and if an input circuit breaker or disconnect is needed as well.

The required short circuit rating desired current rating must be followed by the manufacture’s recommendations and specifications chart that’s provided with each VFD purchase, current, size, and voltage, we will utilize the I/O terminals for the motor control.

3. Do you need a circuit breaker or fusible disconnect switch?

ABB ACH550 VFD’s has a disconnect switch/Circuit breaker mounted on the VFD, non-Fusible.

4. What is the required SCCR for the panel?

The required SCCR for the panel 100KA.

5. Do you want the VFD keypad mounted on the enclosure door?

The VFD will be mounted on the opposite side of the wall or the air handler, designated mounting brackets.

6. What pilot devices are required (H-O-A switch, VFD-Off-Bypass switch, Run light, Fault light, etc.).

AAB VFD has and, H-O-A switch and VFD bypass switch with run/fault indicators.

7. Is the application for variable torque or constant torque?

Constant torque, the VFD at times will ramp down however the horse power remains the same.

8. The specification mentions 0.5Hz to 200Hz as the frequency range. Is this just a “typical” manufacturer spec or do you really need frequency above 60Hz? If the answer is above 60Hz, then the application details are critical. As you know available torque rolls off linearly above 60Hz, so by the time they hit 200Hz, the motor would theoretically only be able to produce about 60 / 200 = 30% of its rated torque. The real number will be lower because higher speeds increase the friction and windage losses. My best guess is that 20% is more realistic.

This is the manufactures specifications, we operate under 60 hertz we average our motors at 35 to 45 hertz, the manufacture specifies what the VFD capabilities can achieve if needed.

9. I have a question regarding the VFD’s on this request. I am assuming you are replacing existing Installed VFD’s, would you happen to know or have the unit information that these VFD’s are installed on?

ABB is a manufacturer of VFD drives, but the drives are installed in bigger Air Conditioning assemblies. If the existing unit information is provided, I may be able to locate the exact VFD that works for said unit.

The VFD’s are installed on Air Handler #12-2C Service Bay 2-5, building 100.