SOR - IHAT CRAC Unit Replacement 28 Jan 26.pdf

B1020 IHAT CRAC UNITS

STATEMENT OF REQUIREMENTS

For

B1020 IHAT CRAC Unit Replacement

412 Electronic Warfare Group

Edwards AFB, California

Rev. 1 1/28/2026

1.0 PURPOSE:

The Electronic Warfare Group (EWG) at Edwards AFB, CA, requires the replacement and upgrade of two existing Direct Expansion (DX) Computer Room Air Conditioning (CRAC) unit systems, including condensing units, located at Bldg. 1020 Rm. 400. The existing systems are at the end of their functional lifespan, exhibiting reduced efficiency and unsustainable performance.

2.0 GENERAL REQUIREMENTS:

2.1. Coordination: The contractor shall coordinate all work with the designated Project Manager to minimize disruptions to ongoing operations and classified work within the facility and prevent unauthorized movement of personnel and equipment.

2.2. Personnel Security: All contractor personnel accessing the work site must be US citizens, cleared by the customer's security, and possess a daily temporary worker's badge.

2.3. Work Area Maintenance: The contractor is responsible for maintaining a clean and safe work area and for the timely removal and disposal of all waste materials in accordance with all applicable federal, state, and local regulations.

2.4. Damage Repair: The contractor is responsible for repairing or replacing any items damaged by contractor employees or subcontractors during the project at no additional cost to the government.

3.0 FUNCTIONAL REQUIREMENTS:

The contractor shall provide a complete solution, including all labor, materials, and equipment, to achieve the following functional requirements:

3.1. Procurement and Delivery:

3.1.1. The contractor shall submit specifications and documentation of the proposed DX CRAC unit systems, including capacities, dimensions, energy consumption, and compliance with industry standards, for government approval prior to procurement.

3.1.2. The contractor shall ensure that all equipment is properly packaged and transported to the site.

3.2. Performance:

The replacement DX CRAC unit systems shall meet or exceed the following performance criteria:

3.2.1. Cooling Capacity: Provide at least 26 tons and up to 30 tons of cooling capacity per unit.

3.2.2. Redundancy: Operate in an N+1 redundancy configuration with a rotation interface (zone control).

3.2.3. Energy Efficiency: Employ variable speed fans and controls to optimize energy consumption based on current cooling load.

3.2.4. Electrical Compatibility: Be compatible with the existing 480V, 3Ø power supply and available 125A circuit breakers for CRAC units and 25A circuit breakers for condensing units.

3.2.5. Physical Constraints: Be sized to fit within the existing equipment locations: condensing units on the exterior roof and CRAC units inside the IHAT mechanical room.

3.2.6. Leak Detection: Incorporate leak detection sensors and notification alarms.

3.2.7. Building Automation: Provide BACnet communications capability for integration with the existing building management system.

3.2.8. Humidity Control: CRAC unit must be capable of maintaining humidity levels to ensure optimal performance and reliability of the IT equipment. The CRAC units shall be capable of maintaining the relative humidity (RH) within the controlled environment within the range of 30% to 40% , under typical operating load conditions. Target is 35%.

3.3 Decommissioning and Removal:

3.3.1 Remove and dispose of existing DX CRC unit system equipment and materials in accordance with all applicable environmental regulations and policies.

3.4 Installation:

3.4.1. Installation of the new CRAC unit systems shall be performed by qualified personnel and in accordance with manufacturer specifications and industry’s best practices, using existing infrastructure where applicable. Downtime to the serviced facility shall be minimized.

3.4.2. Due to some of the lines being high temp, a protection shield/barrier is desired for safety reasons, while still allowing the high temp lines to dissipate heat efficiently.

3.5 Integration:

3.5.1. The new DX CRAC unit systems must be integrated into the building's Siemens Desigo control system via BACnet for real-time and remote monitoring through the nearest building patch panel.

3.5.2. The contractor will need to work with Siemens to provide panel, connection, and programming.

3.6. Testing and Validation:

3.6.1. Comprehensive testing must be conducted to verify that the new CRAC units and associated equipment are fully functional and perform to specifications. The testing process should encompass all operational modes of the units.

3.6.2. Airflow testing shall be conducted to verify proper cooling distribution.

3.6.3. Temperature and humidity levels shall be monitored to ensure the serviced environment is maintained within acceptable limits in accordance with performance specifications.

4.0. TECHNICAL REQUIREMENTS AND CONSTRAINTS

4.1. Optional Penetration Modification:

4.1.1. The contractor shall assess the viability of using existing penetrations and shall notify the government project manager if new or modified penetrations are required.

4.1.2. In the event that existing mechanical ducting and penetrations need to be modified to support the new system, a detailed plan for any new or modified penetrations must be submitted to the government for review and approval before work commences.

4.1.3. ICD/ICS 705 Compliance: Should any work require the modification or creation of penetrations on the facility's perimeter walls, the work must be performed in strict accordance with the most current version of ICD/ICS 705, "Technical Specifications for Construction and Management of Sensitive Compartmented Information Facilities. The contractor is responsible for understanding and adhering to all requirements for perimeter penetrations outlined within this standard.

4.1.4. The primary objective is to ensure any and all modifications maintain the physical, acoustic, and radio-frequency (RF) integrity of the perimeter.

4.1.5. The contractor is responsible for demonstrating a thorough understanding of and compliance with these standards.

5.0 ACCEPTANCE CRITERIA

The following criteria must be met for the government to accept the completed work:

5.1. All CRAC units and condensing units are installed according to the manufacturer's specifications and industry’s best practices.

5.2. All units are functioning properly and meeting performance specifications.

5.4. The site is clean and free of debris.

5.5. All required documentation (manuals, warranties, test results, etc.) have been submitted and approved.

6.0 DELIVERABLES

The Contractor shall provide the following deliverables:

Deliverable Description Delivery

Material and Equipment Spec Sheets

Submittal of specifications for all materials and equipment for approval

Prior to purchase

Penetration Plan (if required)

Plan to address key ICD/ICS 705 considerations, such as, acoustic integrity RF integrity, physical security, and installation techniques.

Prior to commencing any perimeter wall work

Installation Report Detailed account of the installation process and any deviations made

Within 5 days of installation completion

Test and Performance Report Evaluation results confirming the functionality and performance of CRAC units

Within 10 days of testing completion

Technical and Operators Manuals

Manufacture information to maintain, troubleshoot, and repair equipment

Within 5 days of installation completion

Warranty Documents Detailed coverage, exclusions, and claim procedures.

Within 10 days of testing completion

7.0 REFERENCE INFORMATION

7.1. Existing CRAC unit details: * DATA AIRE * Model: DAAD-2634 * 26Ton, 3Ø, 460V * Downflow Air Cooled

7.2. Existing condensing unit details: * DATA AIRE * Model: DARC-5034 * 50Ton, 3Ø, 460V