ARFQ 0608 DCR2500000046 - Addendum No. 1.pdf

ARFQ 0608 DCR2500000046

REQUEST FOR QUOTATION

CHILLER REPLACEMENT PROJECT

MOUNT OLIVE CORRECTIONAL COMPLEX AND JAIL

CHILLER REPLACEMENT 1 ADDENDUM NO. 1

PROJECT

ADDENDUM NO. 1

Questions:

Q1: Do the new chillers tie into the existing piping that feeds the existing Chillers?

A1: Yes

Q2: Are you referring to “Chiller Controls” as the control panel that is on the Chiller?

A2: Yes

Q3: I assume the (4) new valves go on the tie in points outside at the chillers (2 valves per chiller?)

A3: Yes

Q4: Are you referring to “Pump Controls” as the VFD for each pump (4)

A4: Yes

Q5: In the bid package you listed model numbers of: Filter feeder, water softener, electric actuators. But none of these items are listed on scope of work. Please clarify

A5: The contractor must replace the filter feeder, water softener, and electric actuators with new.

Q6: Page 7, D states that there was no glycol installed in the system. Does that mean that the existing piping has electrical heat trace and contractor is not responsible to fill the entire system Up with Glycol?

A6: Yes, the contractor must replace the existing heat trace with new.

Q7: There is no mention of a BAS on the chiller system. Is it currently being controlled by a

BAS and if so, what brand?

A7: Yes, the existing system is the Metasys by Johnson Control, Inc. The contractor must reconnect the BAS system to the new chiller system.

Q8: The pump spec’s that are in bid documents does not include the gpm’s or the total head feet. Can you please provide that info?

A8: The new pumps must meet the following requirements:

CHILLER REPLACEMENT 2 ADDENDUM NO. 1

A8a: 20 HP pumps must be 480 GPM’s at 100 total head (feet) A8b: 5 HP pumps must be 480 GPM’s at 25 total head (feet)

Q9: On the (4) pumps that are being replaced, do you also want new suction diffuser for each pump?

A9: Yes, the contractor must replace the existing with new.

Q10: Can the bid date be extended one week?

A10: Yes

Q11: Is there currently glycol the system, if so what percentage and will the new need to be added?

A11: There is no glycol in the existing system.

Q12: Is there a specific control system/contractor for the facility?

A12: The existing system is the Metasys by Johnson Control, Inc.

Q13: Is a new water softener to be installed as part of the scope?

A13: Yes, a new water softener must be installed.

Q14: Is a new chemical pot feeder part of the scope?

A14: Yes, the contractor must install a new pot feeder.

Q15: The bid documents mention replacing the pumps and pump controls. What work is part of the pump controls?

A15: The contractor must replace the primary and secondary pump controls.

Q16: Are new speed drives required for the new pumps?

A16: Yes

Q17: Are new control valves or actuators part of the scope?

A17: Yes

Q18: Is there any insulation requirements/specifications?

CHILLER REPLACEMENT 3 ADDENDUM NO. 1

A18: The insulation for new must match the existing insulation.

Q19: For the pump install do we need to include following material in our bid:

Q19a: New triple duty valves?

A19a: Yes, the contractor must replace the existing with new.

Q19b: Suction diffusers?

A19b: Yes, the contractor must replace the existing with new.

Q19c: Pressure gauges and thermostats?

A19c: Yes, the contractor must replace the existing with new.

Q19d: Chemical feeder?

A19d: Yes, the contractor must replace the existing with new.

Q19e: Flex connectors for supply and return piping?

A19e: Yes

Q19f: 2 new motor starters for pumps?

A19f: Yes, the contractor must replace the existing with new.

Q19g: 2 new speed drive for pumps?

A19g: Yes, the contractor must replace the existing with new.

Q19h: 2 new control actuator and valves for the main loop?

A19h: Yes, the contractor must replace the existing with new.

Q19i: VFD fuse panel gets reused?

A19i: Yes

Q19j: New expansion tank and isolation valves and drains?

A19j: Yes, the contractor must replace the existing with new.

Q19k: New water softener valves?

A19k: Yes, the contractor must replace the existing with new.

Q20: What controls does the building have and everything needs to be tied back in?

A20: The existing system is the Metasys by Johnson Control, Inc.

Q21: For the Chiller:

CHILLER REPLACEMENT 4 ADDENDUM NO. 1

Q21a: Do we Reuse the old electrical disconnect A21a: Yes

Q21b: All pipe insulation outdoors need to be re insulated and metal lagged?

A21b: Yes

Q21c: All piping can be grooved pipe and fittings?

A21c: Yes

Q21d: New pressure gauges for the chiller?

A21d: Yes

Q22: All chiller vendors only sell screw compressor with R513-a and Scroll with R-454b. You had screw with 454b

A22: The contractors must provide the new chillers with R-513A.

Clarifications:

C1: Please see the attached mandatory pre-bid sign-in sheet from March 21, 2025.

C2: The bid time and date has changed: 10:30 AM E.S.T. on April 11, 2025