Z2DA--Replace Auxiliary Chiller

Statement of Work (SOW) / Performance Work Statement (PWS)

This document specifies the requirements for hydronic piping systems, including chilled water, heating hot water, and drain piping, as well as extensions of domestic water make-up piping for HVAC systems.

• Installation of various types of piping, including steel, copper, and CPVC, adhering to specified standards and materials.

• Requirements for pipe fittings, including threaded, welded, flanged, and specialized types.

• Specifications for valves, including shut-off, butterfly, globe, angle, and check valves, with detailed requirements for materials, pressure ratings, and operation.

• Inclusion of strainers, flexible connectors, expansion joints, and hydronic system components such as air purgers, air separators, and expansion tanks.

• Requirements for water flow measuring devices and associated test provisions.

• Installation of electrical heat tracing systems for outdoor piping exposed to freezing temperatures.

• Adherence to applicable publications from organizations like ASME, ASTM, AWS, EJMA, MSS, and TEMA.

• Compliance with specific sections of "COMMON WORK RESULTS FOR HVAC" and "HVAC WATER TREATMENT."

• Requirements for leak testing, flushing, and cleaning of piping systems.

• Startup and testing procedures, including manufacturer recommendations and COR approval.

• As-built documentation, including updated literature, data, and drawings.

Not explicitly stated in this document, but implied to be for a construction or installation project.

• All materials and components must meet or exceed specified standards.
• Welder qualifications must be current and formally certified.
• Submittals, including shop drawings, product data, and samples, are required.
• Quality assurance measures, including product traceability and manufacturer compliance, are mandated.
• Installation must follow specified procedures for piping, joints, expansion joints, seismic bracing, leak testing, flushing, cleaning, and water treatment.
• Training and demonstration for VA operating personnel are required.

Solicitation / RFP / RFQ

This document specifies requirements for Hydronic Pumps used in Heating, Ventilating, and Air Conditioning (HVAC) systems. It details the technical specifications, materials, and performance criteria for these pumps.

• Pumps must operate continuously without overheating or producing excessive noise.

• Pumps must be of a single manufacturer, with interchangeable parts.

• Materials specified include cast iron, bronze, and stainless steel for various components.

• Motors must be high efficiency, inverter duty, and open drip proof, operating at 1750 RPM unless otherwise noted.

• Heating pumps must handle water up to 107 degrees C (225 degrees F).

• Pumps must be factory tested and meet specified performance criteria.

• Variable speed pumps require specific controllers and operation as shown on drawings.

• In-line, base-mounted, end suction, or double suction types are detailed with specific material and construction requirements.

• Pumps must be designed for servicing without disturbing piping or removing the motor.

• Coupling guards meeting OSHA requirements are mandatory.

• Pump connections are to be flanged.

• The document references various sections for General Requirements, Shop Drawings, Sustainable Construction, Commissioning, Seismic Restraint, Common Work Results for HVAC, Motor Requirements, Noise and Vibration Control, Testing and Balancing, and Hydronic Piping.

• Submittals must include manufacturer's literature, data, characteristic curves (head-capacity, efficiency-capacity, brake horsepower-capacity, NPSHR-capacity), and operating/maintenance manuals.

• A System Readiness Checklist completed by a qualified technician is required.

• Training plans and instructor qualifications must be submitted.

• As-built drawings are required, including AutoCAD versions with specific layering.

• Certification documentation with test results is required 21 working days prior to final inspection.

• Not explicitly stated in this document.

• Applicable publications from ASME and ASTM are referenced.

• Field modifications to bearings or impellers are prohibited; non-compliant pumps must be returned to the manufacturer.

• A manufacturer's technical representative must provide 4 hours of instruction on system operation and maintenance.

Form / Attachment / Pricing Sheet

This document is a sign-in sheet, likely from a pre-solicitation conference or a similar event related to a government contracting opportunity. It records the names, organizations, and contact information (email addresses and phone numbers) of attendees.

• Names of individuals who attended.
• Their respective organizations.
• Contact information, including email addresses and phone numbers.

This sign-in sheet provides contact information for individuals and companies who have expressed interest in the opportunity. Bidders can use this information to identify potential partners, competitors, or to network with other interested parties. It may also indicate which companies are actively engaged with the opportunity.

Amendment / Modification

This amendment provides Government responses to vendor questions and posts the sign-in sheet from the pre-bid site visit for Solicitation 36C24626B0004.

Key clarifications include:

• Superintendent & SSHO: Must be authorized to act in the name of the prime contractor and must be on-site at all times while work is commencing. They can be the same individual if qualified.

• Asbestos/Lead: No known Asbestos Containing Material (ACM) or lead is present in the work areas.

• ICRA Requirements: Not anticipated to require negative air, sticky mats, or plastic barriers, as work is in a mechanical room and outside Building 3, with dust generation to be minimized.

• Chiller Replacement: The manufacturer is not specified, but must meet Buy American and SOW requirements. The contractor must use the current concrete pad; if the new chiller exceeds its size, the contractor is responsible for demolition and construction at no additional cost, subject to VA approval.

• Pumps: If pumps are independently controlled, they require new drives. Otherwise, new pumps should be controlled by the new chiller.

• Chiller Specs: Screw or scroll chillers are acceptable. The contractor must ensure adequate amperage for the proposed chiller using the two existing circuits, or properly abandon the second circuit if not required.

• Piping: Fusion piping is not permitted; welded steel is required.

• Insulation/Heat Tape: Specifications are provided in section 23 07 11.

• Crane Setup: Any potential road closures require VA engineering and safety approval.

• Expansion Tank: Contractor must verify the existing 44-gallon expansion tank is adequate for the proposed new chiller.

• Testing & Balancing (T&B): T&B is not required; contractor must verify flow across the primary chiller loop.

• Responses to vendor questions regarding various project aspects (staffing, safety, materials, scope, etc.).

• Attached documents include:

  • Site Visit Sign-In Sheet(s)
  • Specification 23 07 11 HVAC Insulation
  • Specification 23 21 23 Hydronic Pumps
  • Specification 23 21 13 Hydronic Piping
  • Specification 236400 Packaged Water Chillers

• Offers must acknowledge receipt of this amendment. The bid due date and time remain unchanged.

• Bidders should complete Block 18 of the SF 1442 on their submitted offer to acknowledge this and any other amendments.

Specification

This document specifies requirements for scroll air-cooled water chillers, complete with accessories. It details the technical specifications, materials, and performance standards for these units.

• Chillers must be factory-assembled and tested, with a minimum of two compressors and a maximum of eight, mounted on a single welded steel base.

• Units must be capable of operating with HCFC-134a or HCFC-410a refrigerants.

• Performance ratings (part load and full load efficiency) must not exceed those shown on drawings.

• Chillers must comply with AHRI 550/590 standards and applicable ASHRAE, ASME, ASTM, NEMA, NFPA, and UL standards.

• Sound pressure levels must not exceed specified maximums.

• Compressors must be hermetically sealed, positive-displacement type, mounted on vibration isolators.

• Condensers must be air-cooled integral type with extended surface fin and tube design, factory air-tested.

• Evaporators must be shell and tube design, tested to ASME Boiler and Pressure Vessel Code standards.

• Insulation must be a minimum of 20 mm thickness of flexible-elastomeric thermal insulation.

• Controls must be microprocessor-based, stand-alone, in a NEMA 3R enclosure, with a display showing various operational parameters.

• Safety functions must include shutdown for loss of chilled water flow, low chilled water temperature, compressor overload, freeze protection, starter fault, high/low oil pressure, and recycling pumpdown.

• Controls must provide leaving chilled water temperature reset based on a signal from the Energy Control Center (ECC).

• Chiller control panels must use BACnet for communication with building automation systems.

• A 5-year warranty for motor and compressor, including materials, parts, and labor, is required.

• Refrigerant and oil must be provided for maximum capacity operation; any refrigerant lost during the warranty period due to equipment failure must be replaced at no cost to the Government.

• Submittals must include manufacturer's literature, data (rated capacity, pressure drop, efficiency, refrigerant, fan performance, accessories, installation/startup procedures, wiring diagrams, sound/noise data), maintenance/operating manuals, run test reports, and product certificates.

• Manufacturer's factory-trained representative must perform startup and testing.

• A written report outlining test and inspection results must be submitted.

• 8 hours of training must be provided by a manufacturer's certified representative for VA personnel.

Not specified in this document.

• This document is Section 23 64 00 of a larger specification.
• Applicable publications from various organizations are listed.

Statement of Work (SOW) / Performance Work Statement (PWS)

This document specifies requirements for HVAC insulation, including materials, installation, and quality assurance, to ensure thermal efficiency and condensation control for various HVAC systems.

• Field-applied insulation for HVAC piping, ductwork, and equipment.

• Definitions of terms related to insulation, vapor retarders, and temperature ranges (e.g., ASJ, FSK, HPS, LPS, HWH).

• Requirements for various insulation materials including Mineral Fiber, Mineral Wool, Rigid Cellular Phenolic Foam, Polyisocyanurate Closed-Cell Rigid, Flexible Elastomeric Cellular Thermal, Cellular Glass, and Calcium Silicate.

• Specifications for insulation facings and jackets, adhesives, mastics, cements, mechanical fasteners, and reinforcement finishes.

• Detailed installation procedures for different types of insulation on various components (ductwork, piping, equipment).

• Specific requirements for firestopping material and flame/smoke characteristics of assembled systems.

• Pipe insulation schedule detailing material, thickness, and size based on operating temperature and service.

• Flame spread index not to exceed 25 and smoke developed index not to exceed 50, as per ASTM, NFPA, and UL standards.

• Vapor retarders must have specific permeance ratings (e.g., 0.02 perms for ASJ, 0.001 perms for vapor barrier jackets).

• Materials must be compatible with service temperatures and not contribute to corrosion.

• Insulation must be installed in a first-class manner, continuous, and properly sealed.

Not explicitly stated in this document, as it focuses on material and installation specifications.

• Compliance with referenced Federal Specifications, Military Specifications, ASTM standards, and NFPA codes.
• Materials must be non-combustible or limited combustible with specified flame and smoke characteristics.
• Specific requirements for insulation on exterior or exposed locations, and for freeze protection.
• Provisions for removable insulation for maintenance access.
• Inspection and approval by the VA COR for underground insulation.

Other / Unclassified

This document is a sign-in sheet for a Pre-Bid Conference / Site Visit held on December 23, 2025, for the "Replace Auxiliary Chiller" project (Project No. 565-24-113) at the Fayetteville VAMC. It lists attendees, their organizations, phone numbers, and email addresses.

This document provides a record of entities that attended the pre-bid conference and site visit. This information can be useful for bidders to understand who else is interested in the opportunity and potentially for networking or identifying competitors.

Form / Attachment / Pricing Sheet

This document is a data plate for an Airstack Air-Cooled Chiller, model number ASP020XC12A2AL1AAAS-R410A. It provides technical specifications and safety information for the unit.

• Manufacturer: MULTISTACK
• Model Number: ASP020XC12A2AL1AAAS-R410A
• Electrical Ratings: 208 VAC, 3 Phase, 60 Hz
• Compressor Amps: C1: 35 RLA, 239 LRA, 10 HP; C2: 35 RLA, 239 LRA, 10 HP
• Fan Motor Amps: FAN1: 7.4 FLA, 40 LRA, 2 HP; FAN2: 7.4 FLA, 40 LRA, 2 HP
• Minimum Circuit Ampacity: 94
• Maximum Fuse/CB Size: 150
• Refrigerant: R-410A
• Charge: 100
• Factory Test Pressure: 585 PSI (High Side), 235 PSI (Low Side)
• Serial Number: AB 06-010
• Certifications: AHRI Certified (Standard 550/590), ETL Certified to UL STD 1995 and CAN/CSA STD C22.2 no.236
• Intended Use: Outdoor Use
• Warning: Electrical shock hazard (in French and English)

This data plate provides critical technical specifications for a specific chiller model. Bidders may need this information to understand the equipment's capabilities, power requirements, and operational parameters if this chiller is part of the opportunity's scope or if it needs to be compatible with existing infrastructure.

Form / Attachment / Pricing Sheet

This document is a photograph labeled "Photo 1 - Existing Airstack Chiller at Bldg. 3.pdf". It serves as a visual reference for the existing airstack chiller unit located at Building 3.

• The image displays an outdoor view of a building's exterior, specifically showing a large, multi-unit airstack chiller system.
• The chiller units appear to be branded with "Airstack".
• Associated piping and smaller outdoor air conditioning units are also visible.
• The surrounding area includes a paved surface with some markings and a small shed.

This photograph provides visual context for the existing HVAC equipment at Building 3. Bidders responding to an opportunity related to this building may use this image to understand the current state of the airstack chiller system, which could be relevant for site surveys, scope definition, or proposal preparation.

Form / Attachment / Pricing Sheet

This document contains architectural drawings related to the "M103 AHU Bldg. 3 Mech Room 20 Chilled Water 2014" project. It details the "Temporary Work" and "New Work" for the chilled water system in Building Three of the VA Hospital in Fayetteville, North Carolina.

• Building Three Chilled Water System - Temporary Work: Shows existing chilled water piping, air handling units (AHUs), and airstack chillers, indicating temporary connections and modifications.
• Building Three Chilled Water System - New Work: Depicts new chilled water piping, isolation valves, and connections for the system upgrade.
• Specifications: Includes notes on pipe material (Schedule 40 steel pipe) and scale (1/4" = 1'-0").
• Project Information: Identifies the project as "UPGRADE CHILLED WATER SYSTEM" for VA Medical Center, Fayetteville, NC, Project No. 565-11-123, Drawing No. M103.

This drawing provides critical visual information about the existing and proposed chilled water system infrastructure. Bidders can use this to understand the scope of work, the physical layout of the mechanical room, existing conditions, and the extent of new installations required for the opportunity. It is essential for estimating labor, materials, and potential site challenges.

Solicitation

This is an Invitation for Bid (IFB) for Project 565-24-113, which involves the replacement of an auxiliary chiller at Building 3 of the Fayetteville VA Medical Center. The magnitude of construction is estimated between $250,000 and $500,000. This procurement is a Total SDVOSB Set-Aside.

• Remove and replace the existing 120-ton auxiliary chiller at Building 3.

• Integrate the new chiller with the existing Building Automation System (BAS) using BACNET compliant controls.

• Install two (2) 250 gpm pumps in an adjacent mechanical room and integrate them into the BAS.

• All work must comply with applicable Federal and State regulations, VA master specifications, NFPA, and UL standards.

• Contractor must provide Operation & Maintenance manuals and warranty documentation upon completion.

• Contract Type: Firm-Fixed-Price.

• Period of Performance: To be completed within 6 months of Notice to Proceed (NTP).

• Sealed bids are to be submitted electronically via email to Michael.Proctor2@va.gov.

• Bids are due by January 26, 2026, 3:00 PM EDT.

• Virtual Bid Opening: January 27, 2026, 11:30 AM EST.

• Questions Due Date: January 2, 2025, 10:00 AM EDT.

• A site visit is scheduled for December 23, 2025, at 10:00 AM EST.

• This is a Total SDVOSB Set-Aside.

• Offerors must provide proof of SDVOSB certification in the SBA certification database.

• Offerors must return the VA Notice of Limitations on Subcontracting - Certificate of Compliance (VAAR 852.219-75).

• NAICS Code: 238220 (Plumbing, Heating, and Air-Conditioning Contractors) with a Size Standard of $19 Million.

• Bid Guarantee is required if the bid exceeds $150,000 (20% of bid price or $3M, whichever is less).

• Offerors must acknowledge all amendments posted to SAM.gov prior to bid closing.

Specifications / Technical Document

This document provides project specifications for Project no. 565-24-113, "Replace Auxiliary Chiller for Building 3" at the Fayetteville, NC VAMC. The specifications detail requirements for general construction, demolition, HVAC systems, and direct-digital control systems for HVAC.

• General Requirements: Includes safety, site preparation, security, and general construction tasks.
• Demolition: Specifies the removal of utilities, equipment, and existing structures.
• HVAC and Controls: Details the direct-digital control system for HVAC, including integration with existing systems, BACnet compliance, and specific component requirements.
• Safety Requirements: Outlines comprehensive safety protocols, including accident prevention plans, hazard analyses, personal protective equipment, and specific safety procedures for various activities.
• Reference Standards: Lists applicable publications and standards from various professional organizations and government agencies.

This document provides detailed technical specifications and requirements for the "Replace Auxiliary Chiller for Building 3" project. Bidders should review these specifications to understand the scope of work, technical requirements, safety protocols, and any specific materials or systems that must be incorporated into their proposals. Particular attention should be paid to the HVAC and direct-digital control system requirements, as well as the extensive safety regulations.