SOW Replace Bldg 1 Air Handler Canal Point FL Rev5 FINAL.pdf

United States Department of Agriculture Agricultural Research Service

STATEMENT OF WORK

Replace Bldg 1 Air Handler

USDA ARS Sugarcane Field Station 12990 North US Highway 441

Canal Point, FL 33438

Tochie Ezento Date: 1/26/2021

1.0 CONTRACT PROJECT:

Project Title: Replace Bldg 1 Air Handler

Project Location: USDA, ARS, Sugarcane Field Station 12990 US Highway 441 N Canal Point, FL 33438.

2.0 PROJECT CONTACT PERSONS:

Name and Address Phone / Email

Contracting Officer

(CO)

Shalunda Mix 141 Experiment Station Rd Stoneville, MS 38776

Office: 662-686-5346 Shalunda.mix@usda.gov

Engineering Project Manager (EPM / COR)

Tochie U. Ezento 141 Experiment Station Rd Stoneville MS 38776

Office: 832-866-1194 tochie.ezento@usda.gov

Administrative Officer

(AO)

Audra MacNaught, AO 12990 US Hwy 441 N Canal Point, Florida 33438

Office: 561-924-5227 (ext.19) audra.macnaught@usda.gov

Location Monitor (LM)

George Carpenter 12990 Hwy 441N Canal Point, FL 33438

Office: 561-924-5227 (ext. 116) george.carpenter@usda.gov

Research Leader (RL)

Dr. Duli Zhao 12990 US Hwy 441 N Canal Point, Florida 33438

Office: 561-924-5227 (ext.17) duli.zhao@usda.gov

Safety, Health, & Environmental Management Branch (SHEMB) Representative

David Daniels 950 College Station Rd Athens GA 30605

Office: (706) 248-8194 david.daniels@usda.gov

3.0 SCOPE OF SERVICES:

The Contractor shall provide all professional services necessary for the accomplishment of the contract project and such required services shall be in accordance with requirements as described herein.

a. The Contractor shall provide services for the following tasks marked by an “X”:

[X] Provide a cost proposal to complete the project as per project requirements.

[X] Provide and install all material and or equipment to complete scope of work as required by the project.

mailto:tochie.ezento@usda.gov mailto:george.carpenter@ars.usda.gov mailto:david.daniels@usda.gov

4.0 PROJECT DESCRIPTION AND REQUIREMENTS:

Contractor shall remove the current air handling unit (designated ERU-1) and replace it with one that is similar in size, footprint, capacity, electrical connections and other requirements. The parts of the AHU that are prone to corrosion shall be coated with corrosion resistant material. Existing ductwork is in relatively good condition and will not be replaced, except for any torn or damaged portion. The existing VFD shall be reused. Contractor shall perform testing and balancing (TAB) services to proportionally balance all diffusers and grills after the AHU has been installed.

Contractor shall drain chilled water system, flush, and refill. Contractor shall remove existing chemicals in the shot feeder, calculate the volume of chilled water for the system, and install required amount of chemicals into the system to inhibit corrosion. The Government will furnish the Nu-Calgon B20 water treatment product.

Specifications for the AHU (ERU) are contained in Appendix D and performance data is provided in Appendix A. Although it is not mentioned in the specifications, a freezestat shall be provided prior to the cooling coil (see paragraph C below and Appendix E for ERU-1 Controls Schematic). A new supply fan and VFD were installed in 2015. The supply fan materials provided are shown in Appendix B.

A room layout with original design airflow requirements is shown in Appendix F and final TAB report from work performed to install a makeup air unit in 2015 are included in Appendix G. The TAB report results do not match the design data. Because of this and the fact that room numbers are not provided in the report, prior to removing the existing AHU, the contractor shall take preliminary airflow measurements in each room and record them to ensure the final TAB results match as closely as possible. Contractor shall ensure laboratories are negatively pressurized.

After testing and balancing has been completed, commissioning should be performed on the newly installed AHU with the location monitor as an observer, to ensure it is performing as required before acceptance. The sequence of operations for the AHU are as follows:

A. Occupied and Unoccupied Modes:

AHU shall be started from the Direct Digital Controls (DDC) control system whenever the hand-off-auto (H.O.A.) switch is in the auto position and manually started whenever the H.O.A.

switch is in the hand position.

Occupied Mode: Upon a signal from the DDC system the outdoor air damper will open. When the damper is fully open a signal from its end switch shall signal the DDC system which will start the AHU fan provided all safeties (i.e., smoke detector, freezestat, etc.) are not in alarm.

B. Pre-heat Coil All Modes: The DDC system shall energize the electric heating coil in (4 minimum) stages from the temperature sensing element and transmitter in the coil discharge air to maintain the set point of 55°F.

C. Freeze Protection: All Modes – A freezestat, located prior to the cooling coil shall stop the supply fan, cause the outside air damper to return to its normal position, and shall initiate a low temperature alarm if the temperature drops below 35°F. Return to the normal mode of operation shall require manual reset at the freezestat. The DDC panel shall monitor the freezestat through auxiliary contacts and shall indicate an alarm condition when the freezestat trips.

D. Cooling Coil Valve Control: When the unit is running the normally closed cooling coil valve shall modulate to maintain the set point of the cooling coil discharge air temperature sensor (54°F adjustable). When the unit fan is not running, the valve shall return to its normal position.

Pictures and an existing AHU footprint dimension sketch are provided in Appendix C. Contractor shall verify information provided with the physical air handling unit on site.

All items that require access, such as for operating, cleaning, servicing, maintenance, and calibration, shall be easily and safely accessible by persons standing at ground level, or standing on a permanent platform, without the need for portable ladders. Examples of these items include, but are not limited to, valves, coils, filters and strainers, control devices. Prior to commencing installation work, refer any conflicts between this requirement and contract documents to the COR for resolution. Failure of the Contractor to resolve or point out any issue will result in the Contractor correcting at no additional cost or time to the Government.

PROJECT SCHEDULE: The timeframe for this project should not exceed 150 calendar days after Notice to Proceed (NTP) has been issued. Lead time for procurement of equipment and materials has also been factored in this duration.

5.0 PRE-CONSTRUCTION

a. Pre-Construction Submittals

Prior to Construction the following submittals must be submitted to the Contracting Officer (CO) for approval:

1. Work hours (include, daily start, stop time and scheduled workdays)

2. High level Schedule.

3. Construction Cost Proposal presented in a cost break-out format resembling a Schedule of Values will be submitted in MS Excel with all formulas intact and not protected. Written work proposal will be submitted in MS Word.

4. Accident Prevention Plan (APP)

5. The construction contractor (CC) shall provide to the CO a list of contract personnel of the general and subcontractors, who will be emergency contacts, including address, and telephone numbers for use in an emergency. As changes occur and additional information becomes available, the CC shall update the list.

6. Contractor must always have a superintendent on the job when working on this project certified per Contractor’s APP. It is acceptable to utilize any subcontractor’s superintendent if certified and included in APP.

6.0 GENERAL REQUIREMENTS:

6.1 Demolition:

a. Contractor shall coordinate demolition of existing installation with location monitor.

b. All disturbances of existing systems shall be thoroughly coordinated with the location monitor to prevent disconnecting equipment that might jeopardize on-going research.

c. Contractor shall legally dispose of all equipment/materials that will not be retained.

d. Contractor shall divert project waste to recycle where practical. The Contractor shall track and document the amount of waste diverted to recycle. The Contractor shall submit diversion documentation as part of closeout. If no waste is diverted to recycle, the Contractor shall submit a letter stating this and why diversion was not practical.

6.2 Submittals (Digital Only, No Hard Copies):

Provide manufacturer’s descriptive literature/shop drawings for all materials and equipment to the COR for review. The descriptive literature shall be annotated/ highlighted to show its conformance with contract requirements. Contractor is responsible for any costs incurred for equipment ordered without prior approval. Required submittals:

a. AHU and associated equipment, drawings, operating manual, etc.

6.3 Protection of Work and Property/Safety Requirements:

a. The Contractor shall protect the work site, and all existing property and structures within the limits of the construction activities or that may be affected thereby until acceptance of the work. Any damage to property shall be repaired at the Contractor’s expense, to pre-damaged condition to the satisfaction of the COR.

b. Safety and health matters, as they relate to the work, are the exclusive responsibility of the Contractor. The Contractor shall furnish, erect, and maintain barricades, warning lights, signs, guards, or take other precautions as may be required by law or local authorities.

c. The Contractor shall provide all safety equipment/devices, MSDS, personal protective equipment and clothing as required for its employees. Copies of all MSDS shall be provided to the COR.

d. The Contractor as well as the on-site supervisor will have completed no less than 30 hours of OSHA approved safety training. All other Contractor employees will have no less than 10 hours of OSHA approved safety training

6.4 Temporary Facilities:

a. Temporary utilities (electricity) may be furnished to the Contractor by the Government, if so requested. The Contractor shall maintain and protect all such utilities during construction and shall repair or replace any items damaged through its own negligence.

b. Should the Contractor require any power or utility shutdowns during construction, the Contractor shall obtain the appropriate notification lead time from location monitor prior to the need date.

6.5 Materials and Equipment:

a. The material and equipment to be furnished under these contract documents shall be the standard products of manufacturers regularly engaged in the production of such materials and equipment and shall be the manufacturer’s latest standard design.

b. All materials and equipment to be incorporated in the work shall be handled and stored by the manufacturer, fabricator, suppliers and Contractor before, during and after shipment in a manner to prevent warping, twisting, breaking, chipping, rusting and any injury, theft or damage of any kind to the materials and equipment. All materials and equipment furnished by the Contractor shall be subjected to inspection and approval by the CO/COR.

6.6 Cleanup:

The construction site shall always be kept clean and free of debris. Restore areas disturbed as nearly as possible to the original appearance and condition. Upon completion of the project, and prior to final inspection, the Contractor shall remove from the premises all unused materials, trash, and debris resulting from the work to the satisfaction of the COR.

6.7 Equipment Warranty:

a. Extended Equipment/Product Warranties: Obtain and furnish to the Contracting Officer all written warranties for equipment/products that have extended warranties (warranty periods exceeding the standard one-year warranty) furnished under the contract. The warranty period shall begin on the same date as project acceptance and shall continue for the full/product warranty period. The warranties shall be fully executed and delivered to the Contracting Officer prior to final acceptance of the project completion.

6.8 Final Payment/Contract Closeout: Deliverables before FINAL PAYMENT

a. One (1) year warranty on work.

b. Contractor payroll

c. Final invoice

d. Installation and operating manuals for air handler unit

e. Startup Report

Appendices

• Appendix A – Air handler unit performance data

• Appendix B – Supply fan materials

• Appendix C – Existing unit pictures and footprint dimensions sketch

• Appendix D – Existing unit specifications

• Appendix E – ERU-1 Controls Schematic

• Appendix F – Room layout (with original design airflow requirements)

• Appendix G – Final test and balance report

Appendix A – Air handler unit performance data

Appendix B – Supply fan materials

Appendix C – Existing unit pictures and footprint dimensions sketch

Picture 1

Picture 2

Picture 3

Picture 4

Picture 5

Existing AHU footprint dimension sketch

Appendix D – Existing unit specifications

ENERGY RECOVERY UNITS

1. REFERENCES

A. ABMA STD 9 - Load Ratings and Fatigue Life for Ball Bearings.

B. ABMA STD 11 - Load Ratings and Fatigue Life for Roller Bearings.

C. AMCA 99 - Standards Handbook.

D. AMCA 210 - Laboratory Methods of Testing Fans for Rating.

E. AMCA 300 - Reverberant Room Method for Sound Testing of Fans.

F. AMCA 301 - Methods for Calculating Fan Sound Ratings from Laboratory Test Data.

G. AMCA 500 - Test Methods for Louvers, Dampers and Shutters.

H. ARI 410 - Standard for Forced-Circulation Air-Cooling and Air-Heating Coils.

I. ARI 430 - Standard for Central-Station Air-Handling Units.

J. ARI Guideline D - Application and Installation of Central Station Air-Handling Units.

K. NEMA MG1 - Motors and Generators.

L. NFPA 70 - National Electrical Code.

M. SMACNA - HVAC Duct Construction Standards - Metal and Flexible.

N. UL 900 - Standard for Air Filter Units.

O. UL - Fire Resistance Directory.

1.1 REGULATORY REQUIREMENTS

A. Products Requiring Electrical Connection: Listed and classified by Underwriters Laboratories Inc., as suitable for the purpose specified and indicated.

1.2 DELIVERY, STORAGE, AND PROTECTION

Section 15010 – Basic Mechanical Requirements: Delivery, Storage, and Protection.

Accept products on site in factory-fabricated protective containers, with factory-installed shipping skids and lifting lugs. Inspect for damage.

Store in clean dry place and protect from weather and construction traffic. Handle carefully to avoid damage to components, enclosures, and finish.

1.3 ENVIRONMENTAL REQUIREMENTS

Do not operate units until ductwork is clean, filters are in place, bearings lubricated, and fan has been test run under observation.

1.4 WARRANTY

1.5 EXTRA MATERIALS

A. Supply one set of fan belts and filters.

PART 2 PRODUCTS

2.1 GENERAL DESCRIPTION

A. Configuration: Fabricate including:

1. Fan

2. Cooling coil.

3. Electric heating coil.

4. Enthalpy energy recovery wheel.

5. Filters.

B. Performance Base: Sea level.

2.2 CASING

A. Construction: Unit shall be constructed for outdoor installation in complete weather-proof housing. Fabricate on channel base and drain pan of welded steel. Assemble sections with gaskets and bolts.

1. Outside Casing:

a. Galvanized Steel: 18 gages.

b. Finish: Manufacturers standard paint on exterior.

2. Inside Casing:

a. Galvanized Steel: 22 gages.

3. Structural Base:

a. Structural Channel: 25” thick, all welded, and epoxy coated.

4. Floor Plate:

a. Galvanized Steel: 22 gage.

B Insulation:

1. Walls and Roof: Mineral wood.

a. "U" value at 75 degrees F (42 degrees C): Maximum 0.10 Btu/hr/sq ft/degrees F.

b. Density: 2 inch thick, 3 lbs/cu ft.

2. Floor: Foil faced insulation.

C. Finish: Baked enamel.

D. Access Doors: Access will be provided through large hinged, tightly sealed doors. Access doors will be constructed of the same materials as the unit casing. Each door will be provided with two cam type handles and two heavy duty hinges to achieve maximum sealing. Handles are to be internal and external for opening from the inside or outside of the unit. All doors will be air pressure closing.

E. Lights: Provide in accessible sections suitable for damp locations with wire guards, factory wired to weatherproof switch and pilot light and duplex outlet mounted on casing exterior.

F. Drain Pans: Construct from single thickness 304 stainless steel with welded corners. Pitch to drain connection. Provide drain pans under cooling coil section. Banks with more than one coil high will have insulated intermediate 304SS condensate pans individually piped to the lower pan.

G. Weatherproof Casing Finish: Seal fixed joints with flexible weather tight sealer. Seal removable joints with closed-cell foam gasket. Provide cap strips over roof flanges. Provide rain caps and gaskets on access doors.

2.3 FANS

A. Type: Fans will be of the centrifugal PLENUM TYPE, designed without a scroll type housing.

Fans will incorporate a wheel, heavy gauge reinforced steel inlet plate with removable spun inlet cone, structural steel frame, and shaft and bearings in the AMCA Arrangement 3 configuration to form a heavy-duty integral unit. All fan wheels will be tapered spun wheel cones or shrouds providing stable flow and high rigidity. The wheels will be non-overloading type. The blades will be securely welded, die-formed backward curved (16” and smaller) or airfoil (18” and larger) type, designed for maximum efficiency and quiet operation. Fan wheels shall be statically and dynamically balanced.

B. Performance Ratings: Conform to AMCA 210 and label with AMCA Certified Rating Seal.

C. Sound Ratings: AMCA 301; tested to AMCA 300 and label with AMCA Certified Sound Rating Seal.

D. Bearings: Self-aligning, grease lubricated, ball or roller bearings with lubrication fittings extended to exterior of casing with copper tube and grease fitting rigidly attached to casing.

E. Mounting: Locate fan and motor internally on welded steel base coated with corrosion resistant paint. Factory mount motor on slide rails. Provide access to motor, drive, and bearings through removable casing panels or hinged access doors. Mount base on vibration isolators.

2.4 BEARINGS AND DRIVES

A. Bearings: Heavy duty pillow block type, self-aligning, grease-lubricated ball bearings or roller bearings, or ABMA 11, L-50 life at 400,000 hours.

B. Shafts: Solid, hot rolled steel, ground and polished, with key-way, and protectively coated with lubricating oil. Shafts will be sized for first critical speed of at least 1.25 times the maximum speed for the class.

C. V-Belt Drive: Cast iron or steel sheaves, dynamically balanced, bored to fit shafts, and keyed.

Variable and adjustable pitch sheaves for motors 15 hp and under selected so required rpm is obtained with sheaves set at mid-position; fixed sheave for 20 hp and over, matched belts, and drive rated as recommended by manufacturer or minimum 1.5 times nameplate rating of the motor.

D. Belt Guard: Fabricate to SMACNA Standard; 0.106 inch thick, 3/4 inch (20 mm) diamond mesh wire screen welded to steel angle frame or equivalent, prime coated. Secure to fan or fan supports without short circuiting vibration isolation, with provision for adjustment of belt tension, lubrication, and use of tachometer with guard in place.

2.5 COILS

A. Casing: Provide access to both sides of coils. Enclose coils with headers and return bends fully contained within casing. Slide coils into casing through removable end panel with blank off sheets and sealing collars at connection penetrations.

B. Drain Pans: 24 inches downstream of coil and down spouts for cooling coil banks more than one coil high.

C. Air Coils: Certify capacities, pressure drops, and selection procedures in accordance with ARI 410.

Fabrication:

1. Tubes: 5/8-inch OD seamless copper expanded into fins, brazed joints.

2. Fins: Rippled Aluminum. Plate fins. Fins will have full drawn collars to provide a continuous surface over entire tube.

3. Casing: Die formed channel frame of galvanized steel.

E. Water Cooling Coils:

1. Headers: Cast iron, seamless copper tube, or prime coated steel pipe with brazed joints.

2. Configuration: Drainable, with threaded plugs for drain and vent; threaded plugs in return bends and in headers opposite each tube.

3. Coils will have equal pressure drop through all circuits and will be circuited for counterflow operation.

4. The complete coil core will be tested with 315 psig air pressure and be suitable for operation at 250 psig working pressures. Individual tube test and core tests before installation of headers will not be considered satisfactory. Use of internal restrictive devices to obtain turbulent flow will not be acceptable. Vents and drains will be furnished on all coils. Coils will be rated in accordance with ARI.

F. Electric Coils:

1. Assembly: UL 1096 listed and labeled, with terminal control box and hinged cover, splice box, coil, casing, and controls.

2. Coil: Exposed helical coil.

3. Casing: Die formed channel frame of galvanized steel.

4. Controls: Automatic reset thermal cut-out, built-in magnetic contactors, control circuit transformer and fuse, manual reset thermal cut-out, air flow proving device, fused disconnect. The electric heater will be controlled by a discharge air duct mount sensor and thermostat with a 0° to 120°F range. The sensor and thermostat will be shipped with the unit for field installation.

5. Electric Heater Control, Multiple Step – The step controller will receive control signals from the DDC controls panel.

2.6 ENTHALPY RECOVERY WHEEL

A. The rotor media will be made of aluminum and coated with a non-migrating solid absorbent layer prior to being formed into the honeycomb media structure to ensure that all surfaces are coated, and that adequate latent capacity is provided. Desiccant coatings that are sprayed on or dip coated, or desiccants that must be reapplied over time are not acceptable. In addition, the two faces of the energy wheel shall be covered and sealed with a two-part polymer heavy duty coating specifically chosen for chemical resistance.

B. The rotor media shall be tested to a flame spread of less than 25 and a smoke developed of less than 50 when rated in accordance with ASTM E-84. This test data shall be provided as part of the submittal.

C. The desiccant shall be inorganic and specifically developed for the selective adsorption of water vapor. The desiccant shall utilize a 3A molecular sieve certified by the manufacturer to have an internal pore diameter distribution which limits adsorption to materials not larger than the critical diameter of a water molecule (2.8 angstroms).

D. Equal sensible and latent recovery efficiencies must be clearly documented, and certification conducted in accordance with ASHRAE 84 guidelines, including design conditions, and provided over the full capacity range of 400-1000 ft/min face velocities. The results shall be presented in accordance with ARI 1060 standards.

E. Wheel shall be tested to document that the desiccant material utilized does not transfer pollutants typically encountered in the indoor air environment.

F. The cross-contamination and performance certification reports must be provided for engineering review as part of the submittals for this project.

G. Media Cleaning: The media shall be cleanable with low temperature steam, hot water or light detergent, without degrading the latent recovery. Dry particles up to 800 microns shall freely pass through the media.

H. Purge Sector: The unit shall be with a factory set, field adjustable purge sector designed to limit cross contamination to less than .04 percent of that of the exhaust airstream concentration when operated under design conditions.

I. Rotor Seals: The rotor shall be supplied with labyrinth seals, which at no time are required to make contact with any rotating surface of the exchanger rotor face. These multi-pass seals will utilize four labyrinth stages for optimum performance.

J. Rotor Support System: The rotor media shall be provided in segmented fashion to allow for field erection or replacement of one section at a time without requiring side access. The media shall be rigidly held by a structural spoke system made of extruded aluminum.

K. Rotor Housing: The rotor housing shall be structural framework which limits deflection of the rotor due to air pressure loss to less than 1/32”. The housing shall be made of galvanized steel to prevent corrosion. The rotor shall be supported by two pillow block bearings which can be maintained or replaced without the removal of the rotor from its casing or the media from its spoke system.

L. Drive System: The rotor shall be driven by a link belt system. A/C motors will be utilized.

M. Temperature Control Panel: The control system will include four linearized thermistor sensors as follows: (1) Proportional temperature controller mounted in the supply airstream. (2) differential summer/winter changeover sensors mounted in the outdoor and returns airstreams. (3) Frost prevention sensor located in the exhaust airstream. (4) Digital readout of the temperature readings recorded by these sensors and control setpoints is displayed by the control panel.

N. Digital Performance Display Module: Digital readout confirming the effectiveness of the energy wheel via temperature readings recorded by these sensors and control set points will be displayed by the control panel.

2.7 FILTERS

A. Outside Air: Each filter will consist of a 6” thick, pleated media, disable non-woven cotton and synthetic fabric media, media support grid and enclosing frame. The filter media will have an average efficiency of 65% on ASHRAE Test Standard. The filter shall be listed by Underwriter’s Laboratories as Class 2. A bank of galvanized universal holding frames will be arranged for upstream access. Provisions will be made on the downstream side of the frames to prevent filter blowout from moisture or overloading.

B. Exhaust Air: High efficiency filters – Mounted in their own filter bank will be 12” deep high performance (BAG) filters, deep pleated, totally rigid and consisting of high density glass microfiber media with chemically bonded backer, individual pockets, media support grid, contour stabilizers, diagonal support bracing and enclosing frame. The media will have an average efficiency of 95%. The filter shall be listed by Underwriter’s Laboratories as Class 2.

C. Filter Gauges: 2-inch diameter diaphragm actuated dial in metal case, with static pressure tips.

2.8 DAMPERS

A. Outside Air: Factory mounted dampers of galvanized steel and edge and jamb seals in galvanized frame, with galvanized steel axles in self-lubricating brass bearings, in opposed blade arrangement. Dampers will have two position electric actuators with integral limit switch operating at 24 VAC.

B. Damper Leakage: Maximum 2 percent at 4-inch wg differential pressure when sized for 2000 fpm face velocity.

C. Exhaust Air Dampers: Dampers will be gravity operated backdraft type. Dampers will have aluminum frames and blades, with blade seals for low leakage performance.

PART 3 EXECUTION

3.1 INSTALLATION

A. Manufacturer's instructions.

B. Install in accordance with ARI 435.

C. Isolate fan section with flexible duct connections; refer to Section 15910.

D. Install fan assemblies on spring vibration isolators with flexible connections between fan and fan wall. Install isolated fans with resilient mountings and flexible electrical leads.

E. Provide fixed sheaves required for final air balance.

F. Make connections to coils with unions or flanges.

G. Hydronic Coils:

1. Hydronic Coils: Connect water supply to leaving air side of coil (counterflow arrangement).

2. Provide shut-off valve on supply line and lock shield balancing valve with memory stop on return line.

3. Locate water supply at bottom of supply header and return water connection at top.

4. Provide float operated automatic air vents at high points complete with stop valve.

5. Ensure water coils are drainable and provide drain connection at low points.

H. Insulate coil headers located outside air flow as specified for piping.

I. Electric Duct Coils: Wire in accordance with NFPA 70.

Appendix E – ERU-1 Controls Schematic

Appendix F – Room layout (with original design airflow requirements)

Appendix G – Final test and balance report

CERTIFIED TEST AND BALANCE REPORT

PERFECT BALANCE, INC.

P. O. Box 1584 50 South U.S. Hwy 1, Suite 307 Jupiter, Florida 33468-1584 Jupiter, Florida 33477

(561) 575-4919 (561) 746-0726 (fax)

PROJECT: USDA

U. S. Horticultural Research Laboratory Building 1, HVAC Repairs

12990 US 441

Canal Point, Florida

ENGINEER: Clark, Nexsen 440 Martin Luther King Jr. Blvd.

Macon, GA 31201

This is to certify that Perfect Balance, Inc. has balanced the systems described herein to their optimum performance capabilities. The test and balancing has been performed in accordance with the standard requirements and procedures of the Associated Air Balance Council and the results of these tests are herein recorded.

Associated Air Balance Council Certification Number 91-09-22

William C. Halm Test and Balance Engineer March 9, 2016 (Revised)

Test Date: 03-02 & 03-09-2016 Readings By: Chillemi Page 1 of 7

Summary

1. This is a revised report subsequent to the report dated 03-02-2016, including additional information as requested by the design engineer.

2. The building was slightly negative, and the exhaust system was slightly lowered per the direction of the design engineer. The building is now .0055” positive, but it was an extremely windy day. A new exhaust traverse and exhaust grille flows have been revised in this report.

3. Tests of the electric heating coils has been included. We found only one out of thirteen coils operational.

Test Date: 03-02 & 03-09-2016 Readings By: Chillemi Page 2 of 7

Rectangular Duct Traverse Report

Project: USDA System: ERV Unit

Location: 12990 US 441, Bldg 1, Canal Point, Florida

Location

Zone

Duct Size

Duct Area

(Sq Ft)

Design Velocity

(FPM)

Actual Velocity

(FPM)

Design

CFM

Actual

CFM

Remarks

Intake Grille Outside Air 44X33 10.01 663.8 617 6645 6176 Supply Duct Outside Air 26X26 4.69 1416.8 1077 6645 5051

1125 *

Intake Grille Exhaust Air 38X26 6.86 815 417.6 2865 5591 Exhaust Duct Exhaust Air 26X24 4.33 752 661.7 2865 3256 **

Remarks: *Internal supply bypass to exhaust.

**Lowered air flow per engineer’s direction.

Test Date: 03-02 & 03-09-2016 Readings By: Chillemi Page 3 of 7

Air Outlet Test Report

Project: USDA System: ERU Supply Grilles

Location: 12990 US 441, Bldg 1, Canal Point, Florida Test Apparatus: Flowhood

Area Served/ Room Number

No. Type Size Design

CFM

Prelim

CFM

Prelim

CFM

Final

CFM

Remarks

NA* 1 CD Existing 380 196 310 NA* 2 CD Existing 360 158 168 NA* 3 CD Existing 385 195 173 NA* 4 CD Existing 135 88 88 NA* 5 CD Existing 100 95 95 NA* 6 CD Existing 380 259 237 NA* 7 CD Existing 180 154 137 NA* 8 CD Existing 180 189 189 NA* 9 CD Existing 330 254 222 NA* 10 CD Existing 330 152 152 NA* 11 CD Existing 330 239 219 NA* 12 CD Existing 815 387 584 NA* 13 CD Existing 185 81 152 NA* 14 CD Existing 185 154 129 NA* 15 CD Existing 590 334 581 NA* 16 CD Existing 245 289 255 NA* 17 CD Existing 910 508 508 NA* 18 CD Existing 625 284 284

SUPPLY TOTAL 6645 4483

Remarks: *Room names or numbers are not shown on plans.

Test Date: 03-02 & 03-09-2016 Readings By: Chillemi Page 4 of 7

Project: USDA System: ERU Exhaust Grilles

Location: 12990 US 441, Bldg 1, Canal Point, Florida Test Apparatus: Flowhood

No. Type Size Design

CFM

Prelim

CFM

Prelim

CFM

Final

CFM

Remarks

NA* 1 EG Existing 775 460 820 796 No Grille NA* 2 EG Existing 545 918 473 591 NA* 3 EG Existing 480 401 401 511 NA* 4 EG Existing 480 431 431 524 NA* 5 EG Existing 585 292 292 370

EXHAUST TOTAL 2865 2792

Remarks: *Room names or numbers are not shown on plans.

**Rebalanced exhaust.

Test Date: 03-02 & 03-09-2016 Readings By: Chillemi Page 5 of 7

Project: USDA System: MAU-1

Location: 12990 US 441, Bldg 1 Canal Point, Florida Test Apparatus: Flowhood

No. Type Size Design

CFM

Prelim

CFM

Prelim

CFM

Final

CFM

Remarks

Supply Air - - - 1000 880 1095

Test Date: 03-02 & 03-09-2016 Readings By: Chillemi Page 6 of 7

Electric Duct Heater

Project: USDA

Location: 12990 US 441, Bldg 1, Canal Point, Florida

Location/Number Design

KW

Rated

Volts/Phase Stages Actual

KW

Actual

Volts Actual Amps

DH-1 8.0 230/3/60 2 0 232-237-236 0

DH-2 5.0 230/3/60 1 0 232-237-236 0

DH-3 4.0 230/3/60 1 0 232-237-236 0

DH-4 2.0 230/3/60 1 0 232-237-236 0

DH-5 11.0 230/3/60 2 0 232-237-236 0

DH-6 2.0 230/3/60 1 0 232-237-236 0

DH-7 2.0 230/3/60 1 0 232-237-236 0

DH-8 6.0 230/3/60 2 0 232-237-236 0

DH-9 4.0 230/3/60 1 0 232-237-236 0

DH-10 6.0 230/3/60 2 0 232-237-236 0

DH-11 3.0 230/3/60 1 0 232-237-236 0

DH-12 3.0 230/3/60 1* 2.81 232-237-236 7.0-7.0-6.8

DH-13 5.0 230/3/60 2 0 232-237-236 0

Remarks: *Actually two stages, prints show single stage.

**All duct heaters inoperative, except one.

A C T U A L D E S I G N

Test Date: 03-02 & 03-09-2016 Readings By: Chillemi Page 7 of 7

Project: USDA, 12990 US 441, Bldg 1, Canal Point, Florida

Instrument Calibration Rep

Instrument

Manufacturer

Model Number

Serial Number

Range

Calibration

Date Sound Level Meter Quest Tech 2900 HWB070002 20 db to 140 db 10-05-15 Octave Band Analyzer Quest Tech 2900 HWB070002 31.5 to 16khz 10-05-15 Sound Level Calibrator Quest Tech QC-10/20 QIB070041 1khz (114db) 10-05-15 Vibration Meter Quest Tech VI-100 QHB110007 .01-19.99 in/sec 08-14-15 Hydrodata Multimeter Shortridge HDM-300 W94078 .01” to 150 psi 08-28-15 Transit Time Flowmeter Polysonics DCT7088 B02KC023 0 TO 50 ft/sec 08-27-15 Flowhood Shortridge ADM-860 M88982 20 to 2500 CFM 09-01-15 Velometer Shortridge ADM-860 M88982 0 to 30000 FPM 09-01-15 Pyrometer Fluke 52 K/J 474502 -328 to +1400 F 10-01-15 Electronic Tachometer Pioneer 36 3575-6 0 to 12000 RPM 10-01-15 Volt/Ampmeter AWS DSA2007 DD712313 0 to 600 amps 09-15-15 Duct Leakage Kit United McGill LTK-8 NA NA NAP Digital Light Meter Greenlee 93-172 00000826 .01 to 5000 Fc NAP Mercury Thermometer Taylor 6301 NAP -40 to +120 F NAP Mercury Thermometer Taylor 630 NAP 0 to +220 F NAP Dial Thermometer Universal H23-039 NAP -40 to +120 F NAP Dial Thermometer Universal H23-040 NAP 0 to +220 F NAP Incline Manometer Dwyer 100.5 3575-1 0” to 1.0” NAP Incline Vertical Manometer Dwyer 400-5L 3575-2 0” to 5.0” NAP U-Tube Manometer Dwyer 1223-36WM 3575-8 0” to 36.0” NAP Pitot Tube Dwyer NAP 3575-3 18” NAP Pitot Tube Dwyer NAP 3575-4 36” NAP VelGrid Shortridge VLG84 1406-7 14” X 14” NAP VelProbe Shortridge SVP18 1406-8 18” NAP Magnehelic Gauge Dwyer 2000-0 R70902CS73 0” to ½” NAP Magnehelic Gauge Dwyer 2001 R80623RI67 0” to 1” NAP Magnehelic Gauge Dwyer 2005 R80425RI28 0” to 5” NAP

Remarks: