01 10 00 Summary of Work MXF 20.pdf

FEDERAL AVIATION ADMINISTRATION MAY 2020

MXF ASR-9 HVAC REPLACEMENT

SUMMARY OF WORK 01 10 00 - 1

SECTION 01 10 00 - SUMMARY OF WORK

PART 1 - GENERAL

1.1 WORK COVERED BY CONTRACT DOCUMENTS

A. Work of this Contract comprises general construction of:

1. Provide a detailed phased demolition / construction plan (Submittal Required).

2. Selectively remove the existing canopy support column that blocks access to the mechanical equipment room. Two, flanking temporary supports will be installed before removal of the support column. Original support shall be reinstalled after other work is complete. Plan and material will require FAA approval (Submittal Required).

3. Contractor shall LOTO (lock out and tag out) all electrical power for Air Handling Units (AHU) AHU-1, AHU-2, and associated Condensing Units (CU) CU-1A, CU-1B, CU-2A and CU-2B.

4. Insure that the Temporary HVAC system remains functional at all times. It shall be the back-up system for the facility. Remove and replace one existing HVAC system at a time. (AHU-1, CU-1A &CU-1B) or (AHU-2, CU-2A & CU-2B).

5. Remove AHU-1, and AHU-2. Removal shall include unit, base mounts, unit anchor supports, refrigerant, refrigerant piping, power conductors, control wiring with conduit.

The existing disconnect switches, power conduit, pipe and conduit supports; and associated circuit breakers to remain and be reused. Modified conduit length as needed to power new AHUs.

6. Remove existing AHUs isolation dampers, damper actuator and controls. Hard ductwork to remain.

7. Remove ductwork flexible connection for AHUs. Hard ductwork to remain.

8. Remove CU-1A, CU-1B, CU-2A and CU-2B. Removal shall include unit, base mounts, refrigerant, refrigerant piping, control wiring and conduit, disconnect switches, power conductors back to, and including, circuit breaker. Existing interior conduit (1.5 inch Min., Electric Metallic Tube) shall remain and be reused as practical for new equipment.

Unused conduit and supports shall be removed.

9. Furnish and install new AHU-1, 2 and CU-1, 2. Units shall be installed as per manufacture’s recommendations, drawings and specifications. The final product will be

SUMMARY OF WORK 01 10 00 - 2

two fully functioning HVAC systems in a lead / lag relationship controlled by the OAS

2.5 HVAC controller, Government Furnished Material (GFM). Submittal required for AHU, CU, refrigerant piping, valves and all refrigerant circuit components. (Submittal Required).

10. System performance (Cooling Capacity, CFM, Electrical Data, etc) shall meet the requirements as scheduled or as referenced on drawing and in specifications.

11. AHUs shall be interlocked with new supply side motor driven isolation damper(s) (Submittal Required)..

12. For vibration isolation, AHUs shall be fitted a factory supplied subbase and steel spring isolators, as well as flex duct connections (Submittal Required)..

13. Condensing units shall be installed with factory approved rubber isolators. Units shall be firmly anchored to the exiting concrete pad with approved expansion bolts and washers and screws (Submittal Required)..

14. Condensing units will be fitted with low ambient controls, in the form of condenser fan speed modulation, each fan / refrigerant circuit shall be modified with a factory approved field installation of the following (Submittal Required):

a. Head Pressure Control kit (transducer and controller)

b. Variable speed fan motor

c. Other miscellaneous manufacturer’s recommendation

15. Furnish and Install heavy duty, NEMA 4X Stainless Steel, 100amps, 3 pole, fused disconnect switches for CU-1 and CU-2 (Submittal Required).

16. AC units to be fully grounded and bonded

17. All outdoor conduit for power and controls between equipment (AHU, CU and Controller) shall be 1 ½” and ¾” shall be U/L listed rigid type with threaded connections, respectively (Submittal Required)..

18. Liquide-tight flexible conduit, sized to match rigid conduit, shall be limited to the final points of connection to the equipment and a length no greater than 6 feet.

Liquid –tight flexible conduit shall be U/L listed (Submittal Required).

19. All flexible conduits shall be provided with an external bonding jumper in addition to the internal equipment grounding conductor. The bonding jumper shall be a 6 AWG green-insulated stranded copper conductor. The bonding jumper shall terminate on fittings listed for grounding at each end of the flexible conduit.

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20. Electical work shall comply with FAA electrical standard, FAA-STD-019e, lightning and surge protection, grounding, bonding ,and shielding requirements for facilities and electronic equipment, FAA-C-1217G, Electrical work, Interior, and NEC.

21. Furnish and install new smoke detectors for each AHUs, interlocked with unit operation, installed and operated in according with applicable code, International Mechanical Code (IMC) and National Fire Protection Association (NFPA) (Submittal Required)..

22. Provide 5 year whole unit parts, labor, and refrigerant warranty on Air Handling Units and Condensing Units. Warranty includes, but not limited to, compressors, evaporator coil, condensing coils, refrigerant piping and refrigerant pipe accessories (filter drier, sight glass, solenoid valves, etc.).

23. Provide 1 year parts and labor warranty on all other materials furnished.

24. Provide factory certified training to FAA staff members for the proper operation, maintenance and troubleshooting of the HVAC systems.

25. Startup system with a factory certified technician and a manufacture’s approved procedure and checklist. An office report shall be submitted for each system, see DX- Model-Floor-Mounted-Unit Start-Up Checklist within the specifications for further guidance (Submittal Required)..

1.2 CONTRACT METHOD

A. Construct the Work under a single lump sum contract, subject to the provisions of Earned Value Management.

1.3 WORK SEQUENCE

A. Construction Work stages shall be defined by the Contractor. The following sequence is provided as General Guidance Only. Additional phasing may be necessary due to site availability restrictions. Portions of Stages may be simultaneous.

1.4 CONTRACTOR USE OF PREMISES

A. The FAA shall have the right of unlimited access to the premises.

B. Assume full responsibility for protection and safekeeping of project materials under this

Contract.

1.5 MATERIALS DELIVERY TO THE SITE

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A. All material orders for delivery to the site shall use as a delivery address the address of the tower. Delivery trucks shall not pass in front of the terminal.

1.6 CONSTRUCTION AREA LIMITS

A. The limits of construction material storage areas, equipment storage areas, parking areas, and other areas as required by the Contractor shall be as shown on the plans or as approved by the COR. Should Contractor find it necessary or advantageous to use any additional offsite area for any purpose whatsoever, Contractor shall, at its expense, provide and make its own arrangements for the use of such additional offsite areas.

PART 2 - PRODUCTS

NOT USED

PART 3 - EXECUTION

NOT USED

END OF SECTION 01 10 00

SUMMARY OF WORK 01 10 00 - 5

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