Tab 3f(SOW) MCN ASR HVAC replace_Redacted.pdf

SCOPE OF WORK

FOR REPLACING TWO EXISTING 12.5-TON

Pad Mounted PACKAGED COOLING UNITS

AT THE

AIRPORT SURVEILLANCE RADAR (ASR) SYSTEM

Middle Georgia Regional AIRPORT Approximate GPS address:342 NW Industrial BLVD Macon, GA

1. GENERAL.

1.1. These specifications cover the requirements of the Federal Aviation Administration for removing two existing 12.5-ton packaged HVAC units and furnishing and installing two new 12.5-ton packaged HVAC units (similarly configured) at the Airport Surveillance Radar facility in Tallahassee, FL.

1.2. The requirements of these specifications are intended to be in conformity with all current building, electrical, mechanical and OSHA codes. If they are found to be in conflict, the contractor shall notify the FAA COR prior to continuing. The contractor shall also adhere to all Federal, state, and local labor and safety statutes that may apply.

1.3. ACRONYMS AND ABBREVIATIONS.

AF - Airway Facilities ASR – Airport Surveillance Radar Btu – British Thermal Unit CFM - Contractor Furnished Material cfm – cubic feet per minute CO - Contracting Officer COR - Contracting Officer's Representative DO – FAA District Office FAA - Federal Aviation Administration GFM - Government Furnished Material MAX - Maximum MIN - Minimum NTP - Notice To Proceed SSC - System Support Center (local FAA) MCN – Identifier for Macon, GA

MCN ASR HVAC Replacement - 18064475

2/22/24 property of the contractor and shall be transported from the site and disposed of in a legal manner. Demolition and removal work shall be performed in compliance with safety procedures, applicable requirements of the State and local regulations, and with Federal and FAA requirements.

2.8 SAFETY STANDARDS. Contractors shall comply with all

applicable federal, state, and local requirements for protecting the safety of the contractors’ employees, building occupants, and the environment. In particular, all applicable standards of the Occupational Safety and Health Administration (OSHA) shall be followed when working in accordance with this specification.

2.9 WORKING CONDITIONS. Construction/demolition shall in no way interfere with Air Traffic Control Operations. Extreme care shall be exercised so as not to cause any interference or interruption of service from this facility. It is absolutely mandatory that the contractor protects FAA personnel, communication, electrical and mechanical equipment both inside and outside the building from damage caused by work impact, water, debris or dust. The contractor shall have the overall responsibility for the performance and enforcement of all forms of protection within the premises against any damages due to work performed under this contract. Any damages incurred, as a result of construction activity during the performance of this contract will be repaired/replaced immediately by the contractor at no cost to the

FAA.

2.10. DRAWINGS. All drawings submitted for this projects are for reference only, and should not be used for specifying the new units.

3. SUBMISSIONS.

3.1 Prior to job start, the contractor shall submit to the CO the following:

a. Product data sheets on the two new HVAC units which show that all specified items set forth in Section 4.4 are met or exceeded.

b. Product data sheets for new Thermostat and compatibility with existing ECU controller

c. Phasing and work plan

d. Project schedule

e. Start up and testing plan

f. single line diagram reflective of DDC controls, points monitored, fire alarm panel interfaces and sequence of operation for fan shut down criteria.

MCN ASR HVAC Replacement - 18064475 2/22/24

All submissions should be submitted within 10 days from contract award for a determination of specification compliance by the Government prior to said product manufacture.

4. MATERIAL.

4.1. GENERAL. All material specified herein shall be supplied, transported, maintained handled installed and stored by the contractor. All material estimates and measurements are the responsibility of the contractor.

4.2. MATERIAL SPECIFICATIONS. All material shall adhere to the guidelines and specifications set forth in the latest editions of the UL, and ASTM publications. Items 4.4. through 4.7. are major CFM items, however, they are not inclusive of all CFM items.

4.3. EXISTING UNITS. The two existing units to be removed and disposed are: American Standard Trane, model #TCH151C400CB. See Exhibit A for additional detail on existing units.

4.4. NEW UNITS. Each new unit shall be cooling only (no heat

option); outdoor, pad mounted; horizontal supply/return (to match existing supply/return configuration); Trane model # TSJ150B4S00 00A0A1A100C1 or equal, and shall include the following features (See Exhibit B for additional detail on the units selected as the basis of design):

4.4.1. ARI Certification.

4.4.2. Cooling capabilities shall be based on 95-degree F DB

entering condenser and 80 degrees F DB/67 degrees F WB entering evaporator.

4.4.3. Dual hermetic scroll compressor with suction and

discharge service valves, vibration isolators, crankcase heaters, sight glass, and filter dryer.

4.4.4. Independent refrigeration circuits for full backup.

4.4.5. Low pressure/loss of charge protection, dual freeze

protection and high pressure switches.

4.4.6. Multispeed direct drive for evaporator.

MCN ASR HVAC Replacement - 18064475

4.4.7. Insulated cabinet with 500-hour salt spray protection, pre-painted, galvanized steel, with stainless steel drip pan.

4.4.8. Coils shall have factory-applied dipped phenolic

coating.

4.4.9. Dedicated horizontal supply and return configurations, to match existing duct configuration.

4.4.10. Constant air volume controls.

4.4.11. Superior airside performance up to 2.0” net ESP.

4.4.12. Full cable ready DDC controls are standard.

4.4.13. High efficiency evaporator fan motors.

4.4.14. Service option package (available individually):

- Hinged access panels

- Non-fused internal circuit breaker

- Non-powered 115V GFCI Convenience Outlet

4.4.15. Condenser coil hail guards.

4.4.16. Low ambient kit (0 deg F), consisting of:

- variable fan control (motor master)

- heated receiver on discharge line

4.4.17. Ignore economizer mode; do not install outside air

intake hoods.

4.4.18. Provide factory-recommended pleated filters. Provide

initial set and spare set for each unit.

4.4.19. Units shall be wired at factory so that when thermostat set point is satisfied, all compressors shall immediately de-energize.

4.4.20. A new digital wall mounted thermostat must be provided to replace the old thermostat, and must be capable of interconnecting with the existing lad / lag controller (ECU control panel - see Exhibit C pictures below).No temperature setbacks or WiFi connectivity required. Contractor must submit product for consideration and approval prior to installation.

5.2. Ensure unit to be replaced is electrically disconnected by properly locking-out/tagging-out its pertinent circuit breaker in the distribution panel. Disconnect all wiring to the unit.

5.3. Remove unit after disconnecting ducting, fastening

hardware, conduits, and wiring.

5.4. Install new unit, level and plumb, atop pad. Attach to

curb with new, stainless steel hardware per manufacturer’s recommendation.

5.5. Replace the power wiring from existing exterior safety

switch to new unit. Install new supply wiring in existing and new (if necessary) rigid galvanized steel/flex conduit (NTE 6 foot lengths) to the new HVAC unit’s power panel.

5.6. Install vibration collars and reattach existing supply and return ducts as necessary to provide a sealed supply–and-return air-duct system into the facility.

5.7. Install a temporary thermostat so as to operate the

remaining old unit. Reuse the old control system by tying in the new units controls interface to the existing building DDC workstation. Reconnect conduits and terminate power wiring.

5.8. Install new control wiring from the existing DDC control panel to the new unit’s control panel. If the new cooling unit’s panel is in a location in which existing conduit and/or wiring is insufficient in length, the contractor shall furnish and install new cables and conduit as necessary. No splices are permitted.

5.9. Demonstrate proper operation of the unit in the “either-or” configuration with the other unit by using existing thermostat configuration and settings.

5.10. Remove and dispose of the existing old unit.

5.11. Repeat the installation procedure for the other unit after the operation of the first new unit has demonstrated that it can sustain the facility heat load. Remove temporary thermostat and demonstrate operability of the units via their on-board controls and via the building DDC control panel.

6. CLEANUP.

6.1. Before final inspection, the contractor shall thoroughly clean within the construction limits and the surrounding areas affected by this work, including the following:

a. All construction facilities, debris, and rubbish shall be removed from the buildings and the site on a daily basis.

b. All tools, scaffolding, temporary utility connections, building, etc., belonging to the contractor or used under his direction shall be removed from the site.

6.2. All grounds, walkways, and other areas adjacent to the work shall be restored to the original condition before the contractor is released.

7. INSPECTIONS. The contractor shall allow the COR, or other persons designated by the CO, complete access to all portions of the work. The COR shall coordinate and schedule a final inspection date. All work shall be accepted when all work required by this contract, including punch list items, is finished and has passed inspection.

8. Reference

a) Characteristics of existing HVAC units

Table 4 Maximum Unit and Corner Weights (Lbs) and Center of Gravity Dimensions (In.)

Maximum Weights (Lbs) Corner Weights (Lbs)1 Center of Gravity (In.)

Shipping Net A B C D Length Width

1776 1408 474 349 248 337 45 30 Note:

1. Corner weights are given for information only.

Table 5 — Gross Cooling Capacities (MBH) Ambient Temperature

85 95 105 115 Enter Dry Entering Wet Bulb

CFM Bulb 61 67 73 61 67 73 61 67 73 61 67 73

Airflow (F) MBH SHC MBH SHC MBH SHC MBH SHC MBH SHC MBH SHC MBH SHC MBH SHC MBH SHC MBH SHC MBH SHC MBH SHC 75 137.0116.0157.0 90.2 166.0 60.8 127.0110.0151.0 87.1 163.0 58.5 116.0105.0140.0 82.3 158.0 55.8 106.0 99.7 128.0 80.6 152.0 52.8

4500 80 140.0139.0158.0111.0167.0 82.9 130.0130.0151.0109.0164.0 80.8 122.0122.0141.0104.0159.0 77.8 114.0114.0128.0 98.5 152.0 74.6 85 149.0149.0158.0132.0169.0100.0142.0142.0151.0131.0165.0 99.4 133.0133.0141.0126.0159.0 98.2 125.0125.0130.0121.0152.0 96.0 90 158.0 158.0 160.0 153.0 170.0 118.0 152.0 152.0 154.0 152.0 166.0 118.0 145.0 145.0 145.0 145.0 160.0 118.0 137.0 137.0 137.0 137.0 153.0 117.0 75 141.0123.0159.0 93.4 167.0 61.6 131.0117.0154.0 90.9 164.0 59.4 120.0112.0144.0 86.6 159.0 56.8 109.0107.0132.0 81.0 153.0 53.7

5000 80 145.0145.0160.0116.0168.0 84.1 136.0136.0154.0114.0165.0 82.4 128.0128.0144.0110.0161.0 80.9 119.0119.0132.0105.0154.0 77.5 85 155.0155.0161.0138.0170.0103.0148.0148.0155.0138.0166.0102.0140.0140.0145.0135.0161.0102.0131.0131.0134.0129.0154.0100.0 90 162.0 162.0 163.0 160.0 172.0 121.0 157.0 157.0 157.0 157.0 168.0 122.0 151.0 151.0 151.0 151.0 163.0 123.0 143.0 143.0 143.0 143.0 155.0 122.0 75 145.0129.0161.0 95.8 168.0 62.6 134.0124.0156.0 94.4 165.0 60.4 123.0119.0147.0 90.4 161.0 57.8 112.0112.0135.0 85.1 154.0 54.6

5500 80 150.0150.0162.0119.0169.0 85.2 142.0142.0156.0119.0167.0 84.0 133.0133.0147.0116.0162.0 82.4 124.0124.0135.0111.0155.0 80.1 85 158.0158.0163.0143.0172.0104.0153.0153.0157.0144.0168.0104.0146.0146.0149.0143.0163.0105.0137.0137.0137.0137.0156.0104.0 90 165.0 165.0 165.0 165.0 173.0 123.0 161.0 161.0 161.0 161.0 170.0 126.0 156.0 156.0 156.0 156.0 164.0 127.0 149.0 149.0 149.0 149.0 157.0 127.0 75 148.0136.0162.0 97.9 168.0 63.5 137.0131.0157.0 97.1 166.0 61.4 126.0125.0150.0 94.3 162.0 58.9 116.0116.0138.0 89.0 155.0 55.6

6000 80 154.0154.0163.0123.0170.0 86.2 147.0147.0158.0124.0168.0 85.8 138.0138.0150.0122.0162.0 83.3 128.0128.0138.0117.0156.0 82.2 85 161.0161.0165.0147.0172.0106.0157.0157.0160.0150.0169.0106.0151.0151.0152.0150.0164.0107.0142.0142.0142.0142.0158.0107.0 90 167.0 167.0 167.0 167.0 174.0 126.0 164.0 164.0 164.0 164.0 171.0 128.0 159.0 159.0 159.0 159.0 166.0 131.0 153.0 153.0 153.0 153.0 159.0 132.0

NOTES:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling subtract indoor fan heat.

2. MBH = Total Gross Cooling Capacity

3. SHC = Sensible Heat Capacity

MCN ASR HVAC Replacement - 18064475

General Information Figure 3-2 Unit Dimensional Data

UNITS A B C D E F G H J K

TC*100B 49 63-5/16 94-5/16 39-3/8 6-13/16 13/16 8-3/8 2-3/16 28-5/8 2

TC*125C

TC*,150D,151C 50-1/8 71-5/16 107-5/16 48-3/8 6-5/8 13/16 8-3/8 2-11/16 29-5/16 2

TC*155B,175C

TC*180B,210C

TC*181C,200B 54 85-5/16 122-5/16 64-1/2 6-13/16 13/16 8-15/16 2-11/16 33-3/16 3

TC*240B,250B

TC*300B,301C

Table 3-1 Typical Unit Weights & Point Loading Data

Unit Net Corner Wts. (lbs) Models Weight A B C D

TC*100C 879 302 225 150 202

TC*125C 1161 389 307 205 260

TC*150D 1319 446 339 230 303

TC*151C 1408 474 349 248 337

TC*155B 1371 482 350 227 312

TC*180B 1498 547 358 234 359

TC*181C 1838 627 461 317 431

TC*175C 1452 500 378 247 327

TC*210C 1654 565 425 285 378

TC*211C 1921 643 495 341 442

TC*200B 1850 654 487 303 406

TC*240B 1913 679 482 312 440

TC*241C 2011 692 523 343 453

TC*250B 1906 661 507 320 418

TC*300B 1906 661 507 320 418

TC*301C 2016 695 524 343 454

* Downflow or Horizontal Note: Corner weights are given for information only.

Unit is to be supported continuously by a curb or equivalent frame support.

Foundation

Horizontal Units If the unit is installed at ground level, elevate it above the snow line. Provide concrete footings at each support location with a “full perimeter” support structure or a slab foundation for support. Refer to Table 3-1 for the unit’s operating and point loading weights when constructing a footing foundation.

Anchor the unit to the slab using hold down bolts or isolators.

Isolators should be installed to minimize the transmission of vibrations into the building.

For rooftop applications, ensure the roof is strong enough to support the combined unit and support structural weight. Re-fer to Table 3-1 for the unit operating weights. Anchor the unit to the roof with hold-down bolts or isolators.

Check with a roofing contractor for proper waterproofing pro-cedures.

Ductwork

Figure 3-3 illustrates the supply and return air openings as viewed form the rear of the unit. Refer to Table 3-2 for the unit opening dimensional data.

Elbows with turning vanes or splitters are recommended to minimize air noise due to tubulance and to reduce static pressure. The first elbow in the ductwork leaving the unit should be downstream of the supply air opening at least 3-1/ 2 times the diameter of the supply fan.

When attaching the ductwork to the unit, provide a water tight flexible connector at the unit to prevent operating sounds from transmitting through the ductwork.

All outdoor ductwork between the unit and the structure should be weather proofed after installation is completed.

Figure 3-3 Horizontal Unit Supply & Return Air Openings

Table 3-2 Horizontal Unit Supply & Return Opening Dimensions

UNITS A B C D E F G H

TCH125C 22-1/2 18 17-3/16 2 3-15/16 41-7/16 16

TCH150D,151C 26-1/2 19-9/16 24-9/16 2 3-15/16 42-1/2 6

TCH155B,180B

TCH175C,210C

TCH181C,200B 26-1/2 24-1/16 27-9/16 2 3-15/16 46-7/16 5-3/8

TCH211C,240B

TCH241C,250B

TCH300B,301C

Roof Curb

Downflow The roof curbs for these units consists of a “full perimeter” enclosure to support the unit.

Before installing any roof curb, verify;

1. That it is the correct curb for the unit,

2. That it includes the necessary gaskets and hardware,

3. That the purposed installation location provides the required clearance for proper operation.

4. Insure that the curb is level and square. The top surface of the curb must be true to assure an adequate curb-to-unit seal.

Step-by-step curb assembly and installation instructions ship with each accessory roof curb kit. Follow the instructions carefully to assure proper fit-up when the unit is set into place.

Note: To assure proper condensate flow during operation, the unit (and curb) must be as level as possible.

If the unit is elevated, a field constructed catwalk around the unit is strongly recommended to provide easy access for unit maintenance and service.

Recommendations for installing the Supply Air and Return Air ductwork joining the roof curb are included in the curb in-struction booklet. Curb ductwork must be fabricated and in-stalled by the installing contractor before the unit is set into place.

Note: For sound consideration, cut only the holes in the roof deck for the ductwork penetrations. Do not cut out the entire roof deck within the curb perimeter.

If a Curb Accessory Kit is not used:

a. The ductwork can be attached directly to the factory-provided flanges around the unit’s supply and return air openings. Be sure to use flexible duct connections at the unit.

b. For “built-up” curbs supplied by others, gaskets must be installed around the curb perimeter flange and the supply and return air opening flanges.

Ductwork

Figure 3-4 illustrates the supply and return air openings as viewed form the top of the unit. Refer to Table 3-3 for the unit opening dimensional data.

Elbows with turning vanes or splitters are recommended to minimize air noise due to tubulance and to reduce static pressure. The first elbow in the ductwork leaving the unit should be downstream of the supply air opening at least 3-1/ 2 times the diameter of the supply fan.

Figure 3-4 Downflow Unit Supply & Return Air Openings Table 3-3 Downflow Unit Supply & Return Air Opening

Tag Data - 6- 25 Ton PKGD Precedent Unitary Rooftops (Qty: 2)

Item Tag(s) Qty Description Model Number

A1 PREC-2,

PREC-2-1

2 6- 25 Ton PKGD Precedent Unitary Rooftop TSJ150B4S00**00A0A1A100C1

Product Data - 6- 25 Ton PKGD Precedent Unitary Rooftops Item: A1 Qty: 2 Tag(s): PREC-2, PREC-2-1

DX Cooling Standard Efficiency R-410A

12.5 Ton

460/60/3 Symbio 700 Hinged Access Panels Through the Base Electric Non-Fused Disconnect Switch Unpowered 20A Convenience Outlet Advanced Controls and BACnet BAS Return and Supply Air Smoke Detector Clogged Filter Switch (CFS) and Fan Fail Switch (FFS) Toolless coil guards 3-year parts, coils & controls 5-year compressor parts only warranty 3 - 24 x 18 x 2 filters 3 - 18 x 18 x 2 filters Low Ambient Kit (Field Installed) High Static Drive

Important Notes:

• This facility is a 24x7x365 facility. No cooling setbacks or sleep cycles are allowed for this facility.

o Facility cooling is required 24x7. Contractor must maintain space cooling with a 70 deg cooling set point. Only one unit shall be out of service at a time, and only taken out of service when the new unit and all incidental materials are on-site and ready for installation.

• Units shall be furnished with duct mounted smoke detectors on both the supply and return air sides.

These duct smokes shall report back to the existing DDC control panel and shall send a supervisory alarm to the building fire alarm control panel. Detection of smoke by either duct smoke detector shall result in a fan shutdown and associated messages relayed to the DDC and building fire alarm control panel.

• If a connection exists between the existing HVAC units and the building EES counterpoise, the contractor must restore that grounding connection between the new HVAC units and existing building counterpoise.

• Existing pads and conduit shall be reused to the maximum extents practical.

• No electrical splices are permitted on this project

• Units shall be started up and commissioned by a manufacturer certified technician prior to entering operable status.

• an extended 5 year parts and labor warranty must be provided in writing at completion of the project.

• The existing units are interconnected with a common DW trunk line with a barometric back draft damper installed for each unit within the existing ductwork. Contractor must ensure that while one unit is out of service, the back draft dampers function as intended such that conditioned air does not escape through the DW associated with the unit being replaced.

Unit Overview - TSJ150B4S00**00A0A1A100C1000000000000000

Application Unit Size Supply Fan External Dimensions (in.) Operating Weight EER IEER/SEER Elevation

DX Cooling / Electric Heat 12.5 Ton

Airflow Total Static Pressure Height Width Length

1262.0 lb 11.00 14.20 0.00 ft 5000 cfm 0.500 in H2O 4.24 ft 5.26 ft 8.30 ft

Unit Features Hinged Service Access/Filters Hinged Access Panels Through the Base Provisions Electric Disconnect / Circuit Breaker Non-Fused Disconnect Switch

Convenience Outlet Unpowered 20A Convenience Outlet

Unit Electrical Voltage/phase/hertz 460/60/3

MCA 31.00 A

MOP 40.00 A

Condenser Fan FLA 2.20 A Evaporator Fan FLA 5.50 A Compressor 1 RLA 13.60 A Compressor 2 RLA 6.30 A Compressor Power 11.37 kW

System Power 13.27 kW

Controls Unit Controls Symbio 700

Communications Option Advanced Controls and BACnet BAS System Monitoring Controls 1 Clogged Filter Switch

Smoke Detector Return and Supply Air

Cooling Section Entering Dry Bulb 80.00 F Entering Wet Bulb 67.00 F

Ambient Temp 95.00 F Leaving Coil Dry Bulb 59.04 F Leaving Coil Wet Bulb 57.65 F Leaving Unit Dry Bulb 60.55 F Leaving Unit Wet Bulb 58.25 F

Saturated Discharge Temperature 123.73 F Saturated Suction Temperature 50.01 F

Capacity Gross Total 147.42 MBh

Gross Latent 33.00 MBh Gross Sensible 114.43 MBh

Net Total 144.20 MBh Net Sensible 111.20 MBh

Net Sensible Heat Ratio 77.12 % Fan Motor Heat 0.52 MBh

Refrig Charge-Circuit 1 11.4 lb

Fan Section Indoor Fan Data

Airflow Application Horizontal Design ESP 0.500 in H2O

Component SP 0.000 in H2O Heat SP 0.000 in H2O Total SP 0.500 in H2O

Supply Fan Count 1.00 Number Indoor Fan Drive Type Variable Direct

Indoor Fan Quantity 1.00 Number Indoor Fan Type BC Plenum

Indoor Fan Performance Airflow 5000 cfm

Supply Motor Horsepower 4.600 hp Indoor Motor Operating Power 1.933 hp

Indoor RPM 1476 rpm Outdoor Fan Data

Outdoor Fan Drive Type Direct Outdoor Fan Quantity 1.00 Number

Outdoor Fan Type Propeller

Field Installed Accessories Low Ambient Kit yes

Acoustics Sound Path 63 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz

Ducted Discharge 85 dB 85 dB 79 dB 76 dB 71 dB 67 dB 67 dB 66 dB Ducted Inlet 82 dB 79 dB 75 dB 67 dB 63 dB 62 dB 59 dB 58 dB

Outdoor Noise 88 dB 90 dB 96 dB 95 dB 92 dB 87 dB 83 dB 75 dB Note:Ducted Discharge and Ducted Inlet Sound in accordance with AHRI 260-2017 Note:Outdoor Sound in accordance with AHRI 370-2015

2024/02/20 16:23:23

-Utilized as a safety device.

-Opens to prevent freezing temperatures on evaporator coil.

-Temperature will need to rise to 50°F before closing.

-Utilized in low airflow or high outside air applications (cooling only).

Indoor Fan

- Direct drive plenum fan design - 6 to 25 tons units.

- Plenum fan design - backward-curved fan wheel along with an external rotor direct drive variabl e speed indoor motor.

- Supply fan speed adjustments can be made using the Symbio 700 or Mobile App.

- Motors are thermally protected.

- Variable speed direct drive motors are high efficiency - 6 to 25 tons.

Through-the-Base Electrical with Disconnect Switch -3-pole, molded case, disconnect switch with provisions for through-the-base electrical connections.

-Disconnect switch installed within unit in a water tight enclosure.

-Wiring provided from the switch to the unit high voltage terminal block.

-Switch cULus agency recognized.

Note: Disconnect switch sized per NEC and cULus guidelines but will not be used in place of unit overcurrent protection.