LYH ASR HVAC Replacement SOW.pdf

FAA ATO

EASTERN SERVICE AREA

ASR (Airport Surveillance Radar) HVAC Replacement

LYH – Lynchburg, Va

October 2019

STATEMENT OF WORK

1.0 SCOPE:

Furnish all labor, equipment and materials to remove the existing 15 ton packaged rooftop unit and replace it with two 20-ton rooftop units (RTUs) on the buildings North end. The main RTU HVAC system shall use one unit as a primary with the second unit to be a backup with automatic change over controls. Installation of the new units will require new exterior ductwork with Siamese connection to the interior ductwork, new interior ductwork, and an extension to the existing concrete pad. Five wall mounted Bard units will be removed after installation of the two larger packaged units. The office area will control temperature via a new ¾ ton mini split system capable of both heating and cooling. Systems shall be complete, functional, and operational in all respects.

The following items are a summary of the project and are provided solely for the purpose of describing the general nature of the work. The Contractor is responsible for accomplishing all items of work identified in the applicable drawings, specifications, and provisions of the contract:

• Ductwork modification in accordance with SMACNA. See attached drawing (.PDF).

• All electric cooling with no heat RTUs (Submittal required)

• Units shall have low ambient controls

• Units shall have winter start kits

• Units shall have factory installed convenience outlets

• Units shall have factory installed disconnect switches

• Units shall have factory or field installed transient electrical surge protection systems as specified in the body of this document.

• Furnish and install electrical power to the new units from the existing electrical service in accordance with NEC.

• A direct digital control (DDC) system should be provided to monitor and operate the

Main Equipment Room RTUs. The DDC system will control operations such as startup, shutdown, switchover, etc.

• Modify equipment pads as needed.

• Removal and disposal of old equipment

• Patch and paint any holes left behind by removal of old units.

• Cap and seal any penetrations left behind by removal of old conduit or wire.

The final outcome of this project will be a complete and functional HVAC system as described and in accordance with the manufacturer’s installation/operation instructions and this document.

2.0 SUBMITTALS:

The Contractor shall submit product information for FAA approval regarding the HVAC units, sequence-of-operation and other key material and information regarding this project. The above submittals will be reviewed by the Government and be approved / disapproved or approved as noted. The Contractor shall not proceed with procurement of material and equipment until the Government approves the submittals.

3.0 WARRANTIES:

The Contractor shall warrant all materials, equipment and labor for all work performed under this contract. This warranty, including factory start-up, shall be for a period of one calendar year beginning upon the date of contract acceptance inspection (CAI). The warranty shall be unconditional and the Contractor shall furnish all labor and materials required to repair or replace defective or failed portions of the contract work. Any warranty repairs shall be mobilized and on-site within a maximum of 24 hours after notification by the Government for any failure which causes the mechanical system to be inoperative. Other failures or defects which have no operational impact to the facility shall be corrected within a maximum of 15 calendar days after notification by the Government. Years 2-5 shall carry a parts and labor warranty (including but not limited to Compressors) with the same response times required for the first year. The Contractor shall furnish to the Resident Engineer (R.E.) the manufacturer's certificate of this warranty stating the beginning and ending dates of the period of coverage. Also, guarantee that each piece of apparatus shall have a capacity or performance of not less than that specified when the apparatus is operating under specified design conditions.

4.0 PERFORMANCE TIME:

The Contractor shall complete the installation of the units within 45 calendar days after Notice- To-Proceed. The time required for the Government to review, comment and approve the submittals, and equipment ordering lead time will not be included in the Contractor’s performance time.

Notice-To-Proceed with the construction phase will not be granted until the Contractor certifies to the Contracting Officer that all required materials and equipment, as approved by the Government, are in his possession and ready for installation.

5.0 SCHEDULE OF WORK:

All work shall be performed during normal daytime hours of 7:00 AM to 3:30 PM unless otherwise approved by the R.E. Alternate work schedules such as 10 hours per day for 4 days per week are acceptable; subject to the total work time per week must not exceed 40 hours. All work schedules proposing more than 8 hours of work per day must be approved in advance by the Resident Engineer. No work shall be scheduled or performed on Saturdays, Sundays or federal holidays, or during holiday maintenance moratorium periods, unless approved in advance.

Maintenance moratorium periods usually occur for approximately 10 days around Thanksgiving and for approximately two weeks around Christmas. Exact dates will be provided during the pre-construction meeting.

6.0 AVAILABILITY OF UTILITIES:

Electricity and water are available for the Contractor’s use. Sanitary facilities may not available for use at this site. The Contractor should make provisions for a portable toilet.

Trash removal shall be the Contractor’s responsibility. Furnish appropriate waste receptacles and service to pick up and transport all waste material to an approved commercial dump or waste processing facility.

7.0 SITE VISIT:

Interested bidders may arrange a site visit by contacting:

Mr. Joe Seifert - ASR Technician, 540-265-2290 Joe.Seifert@faa.gov Lynchburg ASR Facility 4530 Candlers Mountain Rd., Lynchburg, VA

8.0 SPECIFICATIONS

SECTION 23 01 00 COMMON WORK RESULTS HVAC

SECTION 23 05 13 COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT

SECTION 23 05 29 HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

SECTION 23 05 53 IDENTIFICATION FOR HVAC PIPING AND EQUIPMENT

SECTION 23 05 93 TESTING, ADJUSTING, AND BALANCING FOR HVAC

SECTION 23 23 00 REFRIGERANT PIPING

SECTION 23 31 13 METAL DUCTS

SECTION 23 33 00 AIR DUCT ACCESSORIES

SECTION 23 37 13.23 REGISTERS AND GRILLES

SECTION 23 74 16.13 PACKAGED, LARGE-CAPACITY, ROOFTOP AIRCONDITIONING

UNITS

SECTION 23 81 26 SPLIT-SYSTEM AIR-CONDITIONERS

SECTION 26 05 00 COMMON WORK RESULTS FOR ELECTRICAL

SECTION 26 05 00.10 BASIC ELECTRICAL MATERIALS AND METHODS

SECTION 26 05 05 SELECTIVE DEMOLITION FOR ELECTRICAL

SECTION 26 05 19 LOW VOLTAGE CABLES

SECTION 26 05 23 CONTROL VOLTAGE ELECTRICAL POWER CABLES

SECTION 26 05 26 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS

SECTION 26 05 29 HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS

SECTION 26 05 33 RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS

SECTION 26 05 53 IDENTIFICATION OF ELECTRICAL SYSTEMS

SECTION 26 08 00.13 TESTING AND INSPECTING ELECTRICAL EQUIPMENT

SECTION 26 24 16 PANELBOARDS

SECTION 26 28 00 ENCLOSED SWITCHES AND CIRCUIT BREAKERS

SECTION 26 28 13 FUSES

mailto:Joe.Seifert@faa.gov