Amendment 0002.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

1. CONTRACT ID CODE

5. PROJECT NO. (If applicable)2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ.NO.

PAGE OF PAGES

6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6)

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

CODE

9A. AMENDMENT OF SOLICITATION NO.

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended , by one of the following methods: (a) By completing

Items 8 and 15, and returning is extended, is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required.)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

(x) A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO THE AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation date, etc.) SET FORTH IN ITEM 14.

E. IMPORTANT: Contractor is not, is required to sign this document and return

ORDER NO. IN ITEM 10A.

1 24

0002 03/24/2020

FEDERAL AVIATION ADMINISTRATION

AAQ-500 - REGIONAL ACQUISITIONS

2200 S. 216TH STREET

DES MOINES WA 98198-6547

AAQ530ANM-AFN

x

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

separate letter or telegram which includes a reference to the solicitation and amendment number. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED AT

THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted , such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted ; or (c) By ___________ 1 x x

697DCK-20-R-00168

1 copies to the issuing office.

02/11/2020

(x)

See attachment page.

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. CONTRACT AUTHORITY 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

(Signature of person authorized to sign) (Signature of Contracting Officer)

Mark S. Salum

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 10A, as heretofore changed, remains unchanged and in full force and effect .

Attachment Page

14. Description of Amendment (continued): It has been determined necessary and in the best interest of the government to amend the solicitation to provide responses to Requests for Information (RFIs); extend the offer due date and time; and provide updated specifications and drawings.

14.1. The offer due date and time is hereby extended. All offers are due no later than 5:00 pm Pacific Time on Friday, April 3, 2020.

14.2. The following responses are provided to RFIs:

A. It was discussed at the site walk-thru that the isolation valves for each boiler were replaced within the last 5 years and these valves could be re-used. The drawing package provided with the solicitation references replacing the isolation valves at each boiler. Please advise.

FAA Response: Re-use the existing Isolation valves and label to identify the position of the valves on the boiler. Clean and replace with non-asbestos gaskets and verify its operation. Notify COR immediately if isolation valves are not reusable.

B. Specification Section 23 09 00 1.1b – Please provide contact information of the local Schneider Electric/Andover representative.

FAA Response: Representative for SCHNEIDER ELECTRIC in Albuquerque, NM:

IntraWorks Inc.

7910 Lorraine Ct. NE b Albuquerque, NM 87113 Contact: Mr. ERIC BERSON; Tel: 505-796-1111

C. Please provide a plumbing sketch of demo and tie-in points for the new RO System.

FAA Response: See solicitation package attachment 4 – water treatment system pictures.

D. Once outside air louvers are removed for removal/installation of boilers, can the contractor install temporary fire-rated plywood closure of that opening during construction? Once all boilers are replaced the removable louver section will be re-installed.

FAA Response: Yes, keep louvers off until all boilers are replaced. Additionally, stairwell will be removed to lower and remove boilers from areaway.

E. What is the government requirement for run-time of each new boiler before they will allow the demo/install of the next boiler in sequence?

FAA Response: After cleaning and boil out, as a minimum, run for 4 hours on diesel; 48 hours on natural gas under facility load. Follow manufacturer’s and code recommendations. Coordinate with COR and ESU personnel.

F. Please confirm the NAICS Code for this opportunity. The cover page of the RFO Solicitation Package states 238160, while Section L (page 470 of 475) states 238220.

FAA Response: The NAICS code for this opportunity is 238220. The original RFO cover page contained a typographical error.

G. Section M, Evaluation Criteria 1 (page 474 of 475) states “The offeror shall submit … evidence that the firm possesses manufacturer certifications to install the specific products proposed for installation on this project. The offering firm must provide a copy of its certification …” As this solicitation is for a construction contract and not a manufacturer’s product contract, please clarify if the bidder is still required to submit a certification. If so, what type or types of certifications are permissible as evidence?

FAA Response: A manufacturer’s certification or evidence of a distributor’s authority to sell, service, commission, and warrant the boiler system is required as part of the evaluation criteria. For Certification requirements refer to SECTION: 23 52 39; PART 3 -

EXECUTION

H. Please advise if CPARS or Prior Past Performance Questionnaires can be submitted in lieu of new Customer Satisfaction Surveys, as some References have either since retired, or moved on to other agencies.

FAA Response: Past performance customer satisfaction surveys are required.

I. We are no longer able to locate this project on beta.SAM.gov. Please advise.

FAA Response: The project can be found here:

https://beta.sam.gov/opp/d21f53c526584372a321da2cded2a2ed/view

J. The Government has included Breeching and Stack Specification 23 51 00. Is the Government intending to replace the existing breeching/stacks, or is the bidder/offeror to remove and reinstall existing? Please advise.

FAA Response: This question is addressed in RFI response paragraph U.

K. Specification section 23 52 39-1.2.A.1 calls for a “Wet-Back” boiler configuration. Sub-section 2.2.A also makes this configuration distinction. Sub-sections 1.8.A.1 and 2.2.C.1(1) are calling for the refractory assemblies to be mounted in the Boiler doors.

This is a description of a “Dry-Back” Boiler configuration. Which type of Boiler does the design intent expect to be provided? Please reference the attached for the highlighted portions of this specification section.

FAA Response: Revised Design Specification Section 23 52 39 (Revised: 3/3/2020) is attached and will be incorporated into any subsequent award unless further amended.

Revision Summary:

SECTION 23 52 39; Item 1.2.A.1: Added Dry-Back (instead of wet-back).

SECTION 23 52 39; Item 1.8.A.1: Added: Refractory (and insulation) in front & rear doors.

SECTION 23 52 39; Item 2.2.A: Added Dry-Back (instead of wet-back) SECTION 23 52 39; Item 2.2.C.1: Statement is correct (no change) SECTION 23 52 39; Item 2.6.F.1: 3.0 HP is correct (no change)

L. The Equipment Schedule, drawing M809, calls for a 2HP burner blower motor on the Boilers. Specification section 23 52 39-2.7.F.1 calls for a 3HP burner blower motor.

Please confirm which rating is correct. We believe the 3HP rating is correct. This additional power would aid in achieving the 30ppm NOx rating at altitude for the exhaust.

Do you concur?

FAA Response: Drawing ZAB-D-ARTCC-M809 (Attached) supersedes and replaces the original drawing provided with the solicitation. This drawing will be incorporated into any subsequent award unless otherwise amended.

Revision Summary:

Burner horsepower changed to 3.0 HP, instead of 2.0 HP

M. The “Boil Out” procedure for the new Boilers and the initial Chemical Treatment will require a significant cost for the chemicals and treatment contractor time. Please clarify if this chemical treatment work for the new boiler installation is to be included in the contractor bid proposal, or if the FAA Facility will be responsible for it through their chemical maintenance contract.

FAA Response: The following are the chemicals suggested to be used for Chemical Treatment. See attached specifications. Note: Details are available with the respective chemical distributor.

Chemicals:

1. System Cleaner: CL-490

2. Closed System Inhibitor: CS-5584

Procedure:

1. Clean the boilers with an alkaline cleaner, CL-490.

2. Add CS-5584 Corrosion Inhibitor.

With 1,200 gallons of total boiler water volume (3 x 400 gallons per boiler) it will only take 12 gallons of cleaner, and 5 gallons of corrosion inhibitor.

Reminder: After cleaning and Boil Out, as a minimum, run for 4 hours on diesel; 48 hours on natural gas; Follow manufacturer’s recommendations and code requirements.

See RFI response E for further details.

Contractor shall include the cost of chemical treatment with the firm’s proposal.

N. Who is the chemical company that is used for boilers? What type of chemicals are used;

rust inhibitors, etc.?

FAA Response:

INDUSTRIAL WATER ENGINEERING

8701 Alameda Park Drive NE Albuquerque, NM 87113

505.345.5055 cell: 505.228.2461 www.industrialwaterengineering.com

O. Are we including 4” valve replacement for the valves that were not replaced?

FAA Response: No. See RFI response paragraph A.

P. Are you requiring bid bonds on project?

FAA Response: Bid guarantees are not required; however, the awardee will be required to obtain payment and performance bonds for this project.

Q. Is an insurance certificate required as well for bidding purposes?

FAA Response: An insurance certificate is not required for bidding. The awardee will be required to obtain commercial liability insurance and name the FAA as additional insured under the resultant contract.

R. Customer satisfaction survey goes to previous customers and directly to the contracting officer?

FAA Response: Customer satisfaction surveys are to be completed by reference points of contact and shall be returned to the contracting officer as part of the offeror’s technical proposal. Please do not have reference points of contact send customer satisfaction surveys directly to the contracting officer.

S. Will the offer due date be amended?

FAA Response: See Amendment 0002 paragraph 14.1.

T. During the site visit we noticed that 2 of the Boilers have their underground power feed stubbed up in the equipment pad under the Boilers. This necessitated the raising of the Boilers off the pads to allow the above ground conduit to be routed out from under the equipment. Is it the design intent to re-use the existing conduit for these 2 Boilers, or would you prefer that new overhead conduits be run to allow the Boilers to sit properly on the equipment pads? Please advise.

FAA Response: Replace power feeds to Motor Control Center for Boilers: B-1A, B-1B and B-1C, reusing existing raceways. Use solid conductor: 12 AWG (TW or THHW).

Refer to design specifications: section: 26 05 19; Item: 2.2 D for MCC schedules and essential bus one line diagram. The following drawings are hereby attached as a reference and will be incorporated into any subsequent award unless otherwise amended:

ZAB-D-ARTCC-E017B - E/G Power Panel Boards and MCC’s Replacement;

New Panel Boards and Motor Control Centers Schedules

ZAB-D-ARTCC-E018B - E/G Power Panel Boards and MCC’s Replacement;

Essential Bus One Line Diagram, New Work

Contractor shall notify COR if the conductors cannot be removed. Contractor shall field verify and replace the power feeds and routing to the Motor Control Centers for the boilers.

U. The exhaust breeching for all 3 Boilers terminate in a common distribution box for the stacks. The exhaust path is currently an “up and away” positive grade type discharge that has no power actuated backdraft dampers in any of the individual Boiler’s exhaust runs. We don’t find a requirement that these dampers be installed, but please confirm that they are not required or if the design intent is to include them. If not required, please be aware that most modern Boilers have contact points and control logic to operate these dampers as part of the start sequence should you want to incorporate them in the future. Please advise.

FAA Response: Boiler Exhaust System: Install a manual stack damper preferably, with an electrical interlock as a safety feature for each boiler which can be manually closed when the boiler is off line and for servicing and maintenance requirements.

Gas Supply: Each boiler’s natural gas fuel train should have two actuator assisted electric shutoff valves with Proof of Closure Switches, so a vent valve will not be required. Also, each boiler should have two (2) lubricated plug cocks to isolate the gas train from gas either entering or leaving the fuel train when closed.

Contractor shall provide manual stack damper with an electrical interlock as a safety feature and include the cost of this item within the firm’s respective proposal. Contractor must field-verify.

V. In order to facilitate the planning of a more concise work plan for the bid, please advise as to the current storage capacity of the existing RO water system.

FAA Response: The existing system has two 200 gallon tanks, salvage tanks and return to FAA. Specifications call for a new complete system, match capacity.

W. Item 13.A of the solicitation states “Sealed offers in original and 1 copies to perform the work required are due at the place specified in Item 8”. Item 8 is your e-mail address. Is this an e-mail only bid, or are we required to mail an original and 1 copy for bid review? If so, what address are the hard copies to be mailed to? Please advise.

FAA Response: Please email offers to mark.salum@faa.gov. There is no requirement to send a hard copy.

X. Please confirm the set-aside for this project. The cover page of the RFO Solicitation Package lists it as “Full and Open Competition”, beta.SAM does not list the set-aside, and GovWin lists it as “Small Business”.

FAA Response: This requirement is not set aside for any socioeconomic category and is open for full competition among all responsible firms (full and open competition). Both the official government point of entry (beta.sam.gov) and the solicitation package have the socioeconomic set-aside listed correctly.

All other terms and conditions of the original solicitation remain unchanged. Firms interested in offering shall submit signed/acknowledged copies of all solicitation amendments with the firm’s offer. Offers that do not include signed/acknowledged copies of all amendments may be deemed non-responsive.

Attachments:

Boiler Specifications Section 23 52 39 – Date: 3/3/20 (10 Pages) Drawing ZAB-D-ARTCC-M809 – Date: 3/4/20 (1 Page) Drawing ZAB-D-ARTCC-E017B – Date: 3/19/13 (1 Page) Drawing ZAB-D-ARTCC-E018B – Date: 3/19/13 (1 Page) Chemical Cut Sheets (3 Pages)

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SECTION 23 52 39 - FIRE-TUBE BOILERS (Revised: Date: March 3, 2020)

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes packaged, factory-fabricated and -assembled boilers, trim, and accessories for generating hot water with the following configurations and burners:

1. Horizontal, Dry-back fire-tube boiler.

2. Combination natural gas and fuel oil #2 burner.

3. Boiler and burner BacNet controls interface.

1.3 ACTION SUBMITTALS

A. Product Data: Include performance data, operating characteristics, furnished specialties, and accessories.

B. Shop Drawings: For boilers, boiler trim, and accessories. Include elevations, details, and attachments to other work.

1. Dimensional Drawings:

a. Factory Drawing showing specific dimensional information and listing all major components and service connections.

b. Catalogue dimension sheets are not acceptable.

2. Wiring Diagrams: Power, signal, and control wiring.

1.4 INFORMATIONAL SUBMITTALS

A. Source quality-control reports.

B. Field quality-control reports.

C. Warranty: Special warranty specified in this Section.

D. Other Informational Submittals:

1. Startup service reports.

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1.5 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For boilers, components, and accessories to include in emergency, operation, and maintenance manuals.

1.6 QUALITY ASSURANCE

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use.

B. ASME Compliance: Fabricate and label boilers to comply with ASME Boiler and Pressure Vessel Code.

C. ASHRAE/IESNA 90.1 Compliance: Boilers shall have minimum efficiency according to "Gas and Oil Fired Boilers - Minimum Efficiency Requirements."

D. UL Compliance: Test Boilers for compliance with UL 726, "Oil-Fired Boiler Assemblies." UL 726, "Oil- Fired Boiler Assemblies" and UL 795, "Commercial-Industrial Gas Heating Equipment." UL 795, "Commercial-Industrial Gas Heating Equipment." Boilers shall be listed and labeled by a testing agency acceptable to authorities having jurisdiction.

1.7 COORDINATION

A. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete, reinforcement, and formwork requirements are specified with concrete.

1.8 WARRANTY

A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace front- and rear-door refractories and heat exchangers of boilers that fail in materials or workmanship within specified warranty period.

1. Horizontal, Fire-Tube and Fire-Box Boilers: Refractory (and insulation) in front and rear doors, 10 years from date of startup by factory-authorized personnel.

2. 15-Year Pro-rated Pressure Vessel Warranty, PART 2 - PRODUCTS

2.1 HORIZONTAL, FIRE-TUBE BOILERS

A. Manufacturer: Subject to compliance with requirements, provide the following product:

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1. Cleaver-Brooks Boilers

2. Superior Boilers

3. Or equal.

2.2 MANUFACTURED UNITS

A. Description: The boiler shall be a four pass, Dry-backed horizontal firetube updraft boiler with five

(5) square feet of heating surface per rated boiler horsepower. It shall be mounted on a heavy steel frame with integral forced draft burner and burner controls. The complete package boiler shall be approved as a unit by Underwriters Laboratories and shall bear the UL/ULC label.

1. The boiler shall be completely preassembled and fire tested at the factory.

1. The unit shall be ready for immediate mounting on floor or simple foundation and ready for attachment of water, steam, fuel, electrical, vent and blowdown connections.

B. Pressure Vessel Design:

1. The boiler shall be constructed in accordance with ASME Boiler Code and must receive authorized boiler inspection prior to shipment. A copy of the inspection report shall be furnished to the FAA Contractor Officer.

1. The hot water return and outlet connections shall be located on the top center line of the boiler.

The boiler shall be designated to rapidly mix the return water with the boiler water. Forced internal circulation shall be used.

2. A dip tube shall be included as an integral part of the water outlet.

3. Two lifting eyes shall be located on the top of the boiler.

C. Front and Rear Doors:

1. The boiler shall be hinged or davited. Doors are to be sealed with fiberglass tadpole gaskets and fastened tightly using heavy cap screws that thread into replaceable brass nuts.

1. Rear refractory and insulation shall be contained in the formed door, which must swing open for inspection of brick work.

2. The boiler tubes shall not include turbulators, swirlers or other add-on appurtenances.

3. Front and rear tube sheets and all flues must be fully accessible for inspection and cleaning when the doors are swung open. The shell must be furnished with adequate hand holes to facilitate boiler inspection and cleaning.

4. The exhaust gas vent shall be located near the front of the boiler on the top center line and shall be capable of supporting 1,000 lbs. and shall contain a stack thermometer.

5. Observation ports for the inspection of flame conditions shall be provided at each end of the boiler.

D. Casing:

1. The boiler insulation shall consist of a 2 inch blanket under a sectional preformed sheet metal lagging. This insulation must be readily removable and capable of being reinstalled, if required.

1. The entire boiler based frame and other components shall be factory painted before shipment using a hard finish enamel coating.

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2.3 BURNER - COMBINATION GAS AND OIL BURNERS

A. Burner:

1. Mode of Operation: Operation shall be full modulation principle. The burner shall always return to low fire position for ignition.

B. Blower:

1. Motor: Comply with requirements specified in Section: 23 05 13 “Common Motor Requirements for HVAC Equipment”.

2. Air for combustion shall be supplied by a forced draft blower mounted in the front boiler door, above the burner, to eliminate vibration and reduce noise level.

2. Maximum sound level of the boiler/burner package shall not exceed 85 dbA (when measured in accordance with ABMA Sound Test Standards).

3. The impeller shall be cast aluminum, radial blade, carefully balanced, and directly connected to the blower motor shaft.

4. Combustion air damper and cam operated fuel metering valves shall be operated by a single damper control motor that regulates the fire according to load demand.

C. Fuel Series - Light Oil or Natural Gas Fired:

1. Burner Type – The burner, integral with the front head of the boiler, shall be a combination of the low pressure air atomizing type for oil and high radiant multi-port type for gas. The burner shall be approved for operation with either CS12-48 Commercial No. 2 Oil or natural gas.

5. NOx Emissions on Natural Gas will be limited to less than 30 PPM.

6. Gas Pilot - The gas pilot shall be premix type with automatic electric ignition. An electronic detector shall monitor the pilot so that the primary fuel valve cannot open until flame has been established. The pilot train shall include two manual shut-off valves, solenoid valve, pressure regulator and pressure gauge.

7. Oil Burner:

a. Oil Pump - An oil pump with a capacity of approximately twice the maximum burning rate shall be included.

1) Separate motor driven pump set, shipped loose, to be installed in a location favorable to the oil storage tank, shall be provided.

2) Pump characteristics: HP: 1/4HP; GPH: 115; RPM: 1750; Single Stage

b. Oil Burner Piping - Fuel oil piping on the unit shall include oil pressure regulating devices, oil metering controls, solenoid shutoff valves, pressure gauges and fuel strainer, all integrally mounted on the unit. Select one of the following:

1) A fuel oil controller shall be provided to combine all of the fuel oil controls into a single casting which is mounted on the front door of the unit. A single tip retractable nozzle shall be used for the low pressure air atomizing burner.

2) Low pressure air atomizing oil supply to the burner.

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a) Separate air compressor module mounted on boiler base rail with low atomizing air pressure switch.

D. Gas Train: Control devices and modulating control sequence shall comply with requirements in

ASME CSD-1.

E. Gas Pilot: Intermittent electric-spark pilot ignition with 100 percent main-valve and pilot-safety shutoff with electronic supervision of burner flame.

F. Oil Pilot: Intermittent electric-spark pilot ignition with 100 percent main-valve and pilot-safety shutoff solenoid with cadmium sulfide or UV scanner flame-safety control.

2.4 TRIM

A. Include devices sized to comply with ANSI B31.9, "Building Services Piping."

B. Controllers/Transmitters: Operating, firing rate, and high limit.

C. Safety Relief Valve: ASME rated.

D. Pressure and Temperature Gage: Minimum 3-1/2-inch diameter, combination water-pressure and - temperature gage. Gages shall have operating-pressure and -temperature ranges so normal operating range is about 50 percent of full range.

E. Boiler Air Vent: Automatic.

F. Drain Valve: 1 ¼” NPT.

G. If the returning water temperature to the boilers will be below 150°F, a factory supplied blend pump assembly shall be supplied with each boiler to minimize boiler thermal shock and the potential for excessive condensation of the flue gas due to the low water temperatures.

2.5 CONTROLS

A. Refer to Section 23 09 00 "Instrumentation and Control for HVAC."

B. Each boiler shall be factory equipped with a Boiler Control System providing technology and functions.

1. Each Boiler Control System shall be factory equipped with a pre-configured Programmable Logic Controller with OPC Ethernet I/P standard communication capabilities and a 6 inch color touch screen Human Machine Interface (HMI).

8. Dedicated Independent Burner Management System for Flame Safeguard Control.

9. Automatic sequencing of the boilers through standby, pre-purge, pilot flame establishing period, main flame establishing period, run and post purge.

10. Parallel Positioning Combustion Control for maximum of two Fuels including combustion air damper and Flue Gas Recirculation damper control.

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11. Hawk Master Panel with Lead/Lag capabilities for up to 4 boilers. System shall be provided with a sequence to automatically rotate sequence in which boilers are fired. Rotation shall be based on the elapsed time.

E. Building Automation System Interface: Factory-install hardware and software to enable building automation system to monitor and display boiler status and alarms.

1. Hardwired Points:

a. Monitoring: On/Off status, low water level alarm and flow alarm.

b. Control: On/off operation and hot water supply temperature set-point adjustment.

2. A communication interface with building automation system shall enable building automation system operator to remotely monitor the boiler from an operator workstation. Control features available, and monitoring points displayed, locally at boiler control panel shall be available through building automation system. Refer to 23 09 00 Instrumentation and Control for HVAC for details on graphical OWS requirements.

2.6 ELECTRICAL POWER

A. Single-Point Field Power Connection: Factory-installed and -wired switches, motor controllers, transformers, and other electrical devices necessary shall provide a single-point field power connection to boiler.

1. House in NEMA 250, Type 1enclosure.

2. Wiring shall be numbered and color-coded to match wiring diagram.

3. Install wiring outside of an enclosure in a metal raceway.

4. Field power interface shall be to fused disconnect switch.

5. Provide branch power circuit to each motor and to controls with a disconnect switch or circuit breaker.

6. Provide each motor with overcurrent protection.

2.7 CAPACITIES AND CHARACTERISTICS

A. Heating Medium: Hot water.

B. Design Pressure Rating: 30 psig.

C. Safety Relief Valve Setting: 30 psig.

D. Design Water Temperature: 250 deg F.

E. Number of Passes: Four (4)

F. Burner Blower:

1. Motor Horsepower: 3.0 HP

2. RPM: 1750

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G. Electrical Characteristics:

1. Volts: 460 V.

2. Phase: Three.

3. Hertz: 60.

2.8 SOURCE QUALITY CONTROL

A. Test and inspect factory-assembled boilers, before shipping, according to ASME Boiler and Pressure Vessel Code.

B. Burner and Hydrostatic Test: Factory adjust burner to eliminate excess oxygen, carbon dioxide, oxides of nitrogen emissions, and carbon monoxide in flue gas and to achieve combustion efficiency; perform hydrostatic test.

C. Allow Owner access to source quality-control testing of boilers. Notify Architect 14 days in advance of testing.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Before boiler installation, examine roughing-in for concrete equipment bases, anchor-bolt sizes and locations, and piping and electrical connections to verify actual locations, sizes, and other conditions affecting boiler performance, maintenance, and operations.

1. Final boiler locations indicated on Drawings are approximate. Determine exact locations before roughing-in for piping and electrical connections.

B. Examine mechanical spaces for suitable conditions where boilers will be installed.

C. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 BOILER INSTALLATION

A. Equipment Mounting: Install boilers on cast-in-place concrete equipment base(s) using elastomeric pads. Comply with requirements for equipment bases specified in Division 03, Section “Cast-in-Place Concrete”. Comply with requirements for vibration isolation devices specified in Division 23 Section 253 05 48.13 "Vibration and Seismic Controls for HVAC Piping and Equipment".

1. Minimum Deflection: 1/4 inch.

2. Coordinate sizes and locations of concrete bases with actual equipment provided. Cast anchor-bolt inserts into bases.

3. Install dowel rods to connect concrete base to concrete floor. Unless otherwise indicated, install dowel rods on 18-inch centers around the full perimeter of concrete base.

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4. For supported equipment, install epoxy-coated anchor bolts that extend through concrete base, and anchor into structural concrete floor.

5. Place and secure anchorage devices. Use setting drawings, templates, diagrams, instructions, and directions furnished with items to be embedded.

6. Install anchor bolts to elevations required for proper attachment to supported equipment.

7. Install on [4-inch- (100-mm-)] or [6-inch- (150-mm-)] high concrete base designed to withstand, without damage to equipment, seismic force required by code. Coordinate height of base with Resident Engineer (COR).

B. Install gas-fired boilers according to NFPA 54.

C. Install oil-fired boilers according to NFPA 31.

D. Assemble and install boiler trim.

E. Install electrical devices furnished with boiler but not specified to be factory mounted.

F. Install control wiring to field-mounted electrical devices.

3.3 CONNECTIONS

A. Piping installation requirements are specified in other Sections. Drawings indicate general arrangement of piping, fittings, and specialties.

B. Install piping adjacent to boiler to allow service and maintenance.

C. Connect gas piping to boiler gas-train inlet with union. Piping shall be at least full size of gas train connection. Provide a reducer if required.

D. Connect oil piping full size to burner inlet with shutoff valve and union.

E. Connect hot-water piping to supply- and return-boiler tappings with shutoff valve and union or flange at each connection.

F. Connect steam and condensate piping to supply- and return-boiler tappings with shutoff valve and union or flange at each connection.

G. Install piping from safety relief valves to nearest floor drain.

H. Install piping from safety relief valves to drip-pan elbow and to nearest floor drain.

I. Install piping from equipment drain connection to nearest floor drain. Piping shall be at least full size of connection. Provide an isolation valve if required.

J. Connect breeching full size to boiler outlet. Comply with requirements in Section 235100 "Breechings, Chimneys, and Stacks" for venting materials.

K. Install flue-gas recirculation duct from vent to burner. Comply with requirements in Section 235100 "Breechings, Chimneys, and Stacks" for recirculation duct materials.

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L. Ground equipment according to Section 260526 "Grounding and Bonding for Electrical Systems."

M. Connect wiring according to Section 260519 "Low-Voltage Electrical Power Conductors and Cables."

3.4 FIELD QUALITY CONTROL

A. Testing Agency: Engage a qualified testing agency to perform tests and inspections.

B. Perform tests and inspections and prepare test reports.

1. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect components, assemblies, and equipment installations, including connections.

C. Tests and Inspections:

1. Perform installation and startup checks according to manufacturer's written instructions.

2. Leak Test: Hydrostatic test. Repair leaks and retest until no leaks exist.

3. Operational Test: Start units to confirm proper motor rotation and unit operation. Adjust air-fuel ratio and combustion.

4. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment.

a. Burner Test: Adjust burner to eliminate excess oxygen, carbon dioxide, oxides of nitrogen emissions, and carbon monoxide in flue gas and to achieve combustion efficiency.

b. Check and adjust initial operating set points and high- and low-limit safety set points of fuel supply, water level, and water temperature.

c. Set field-adjustable switches and circuit-breaker trip ranges as indicated.

D. Remove and replace malfunctioning units and retest as specified above.

E. Prepare test and inspection reports.

F. Occupancy Adjustments: When requested within 12 months of date of Substantial Completion provide on-site assistance in adjusting system to suit actual occupied conditions. Provide up to two visits to Project during other than normal occupancy hours for this purpose.

G. Performance Tests:

1. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect component assemblies and equipment installations, including connections, and to conduct performance testing.

2. Boilers shall comply with performance requirements indicated, as determined by field performance tests. Adjust, modify, or replace equipment in order to comply.

3. Perform field performance tests to determine the capacity and efficiency of boilers.

a. For dual-fuel boilers, perform tests for each fuel.

b. Test for full capacity.

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c. Test for boiler efficiency at low fire: 25, 50, 75, 100 percent firing rate.

4. Repeat tests until results comply with requirements indicated.

5. Provide analysis equipment required to determine performance.

6. Provide temporary equipment and system modifications necessary to dissipate the heat produced during tests if building systems are not adequate.

7. Notify Architect in advance of test dates.

8. Document test results in a report and submit to Architect.

3.5 DEMONSTRATION

A. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain boilers. Video training sessions. Refer to Section 017900 "Demonstration and Training."

B. Video training sessions. Refer to Division 01 Section “Demonstration and Training”.

END OF SECTION 23 52 39

Rev. 5-30-2019 Page 1 of 1

CL-490

SYSTEM CLEANER

APPLICATION CL-490 is formulated to remove dirt, oil, grease, and other organic contaminants from recirculating hydronic systems. Contaminants are stripped away from exposed surfaces and kept in suspension for removal at final flush. CL-490 is used in boilers, chilled and hot water loops, and heat exchangers.

DESCRIPTION CL-490 is a non-hazardous liquid formulation blend of low foaming detergents, dispersants, alkalinity builder, chelate, and corrosion control agents. This product is designed to clean water-side surfaces in newly installed and/or retrofitted hydronic systems, in preparation for treatment passivation and ongoing reliable system protection.

After cleaning with CL-490, normal water treatment procedures should begin immediately to prevent flash rusting of surfaces.

DOSAGE &

FEEDING

CL-490 should be added at the rate of 1 gallon per 100 gallons of system volume.

• Water Temp <100 °F: Circulate the cleaning solution for at least 12 hours and preferably 36-72 hours.

• Water Temp 100-120 °F: Circulate the cleaning solution for at least 8 hours and preferably 24-36 hours.

After cleaning, flush the cleaner and debris from the system with fresh water, until the system is at raw water conditions and no PTSA residual is detected within the recirculating bulk water. Once complete, treat the system with the appropriate corrosion inhibitor. If the preferred flush is not possible, drain the system, refill with fresh water and circulate. Drain the system once more and refill with fresh water, then treat with the appropriate corrosion inhibitor.

RELATED

INFORMATION

CL-490 should be added where it will be thoroughly mixed with the bulk water. If system water pH is above discharge limits, pH can be lowered by addition of citric or boric acid.

PACKAGING CL-490 liquid is packaged in 5-gallon pails.

HANDLING &

PRECAUTIONS

Please refer to SDS before handling any products.

FOR CHEMICAL EMERGENCY, SPILL, LEAK, FIRE, EXPOSURE, OR ACCIDENT

CALL CHEMTREC DAY OR NIGHT 1-800-424-9300

For Non-emergency Product Information call 1-800-543-6519 between 8 a.m. and 4:30 p.m. Mountain time.

PHYSICAL

PROPERTIES

Color Amber Liquid pH ~11.0 Specific Gravity 1.014

STORAGE Product should be stored in a clean dry place with container closed. Keep container from freezing and keep closed when not in use. Product will not deteriorate with storage.

Recommended shelf-life is 2 years.

CS-5584 1/19/2019 Rev 4 Page 1 of 2

CS-5584

CLOSED SYSTEM INHIBITOR

APPLICATION CS-5584 is a blend of sodium nitrite, borax, organic corrosion inhibitors, and polymeric dispersants for the treatment of chilled water closed loop and hot water closed loop-heating systems. CS-5584 is compatible with systems containing propylene and ethylene glycol antifreezes.

DESCRIPTION CS-5584 has inhibitors for ferrous and non-ferrous metals. CS-5584 is designed for systems that contain iron, copper, bronzes, aluminum, and steel-copper couples. CS- 5584 has buffers to neutralize any acids present or future acids formed by thermal breakdown of organic materials.

DOSAGE &

FEEDING

CS-5584 should be applied:

Hot water systems 700-1200 ppm as NaNO2

Chilled water systems 700-1200 ppm as NaNO2

Glycol water systems 1000-1400 ppm as NaNO2.

RELATED

INFORMATION

CS-5584 should be added with a chemical injection pump at the DA storage or directly into the boiler. If CS-5584 is added via a dilution tank, the water used for dilution should be softened water. The dilution water should not be stirred excessively. Plastic or stainless steel feed equipment is recommended. U.S.D.A. AUTHORIZED FOR USE IN

FEDERALLY INSPECTED MEAT AND POULTRY PLANTS.

PACKAGING Control dosage is based on the nitrite test kit.

HANDLING &

PRECAUTIONS

Please refer to MSDS before handling any products.

FOR CHEMICAL EMERGENCY, SPILL, LEAK, FIRE, EXPOSURE, OR ACCIDENT

CALL CHEMTREC DAY OR NIGHT 1-800-424-9300

For Non-emergency Product Information call 1-800-543-6519 between 8 a.m. and 4:30 p.m. Mountain time.

PHYSICAL

PROPERTIES

Color Clear to yellow liquid Specific Gravity 1.20-1.35 pH >12.0

STORAGE Product should be stored in a clean dry place with container closed. Keep container from freezing and keep closed when not in use.

CS-5584 1/19/2019 Rev 4 Page 2 of 2

GREEN

CHEMISTRY

CS-5584 is formulated and applied following the 12 EPA guidelines for Green Chemistry:

1. CS-5584 is designed to be used in its entirety, with the container being recyclable. No fillers or other product modifiers are added. The manufacturing process produces no byproduct, and only rinse water is used to clean the production equipment. All rinse water is recycled.

2. IWE products use state-of-the art chemical technology to optimize, scale prevention, corrosion protection, microbial control, and fouling minimization.

Products are designed for maximum safety. Using IWE products will allow the facility to maximize energy, water, and chemical dollar savings, while minimizing impact to the environment, employees, and customers of the facility. No potential for chemical contact with the employees and customers of the facility.

No noxious odors as may be experienced from other chemicals. No disposal issues. The design allows for 100% use of the products.

3. No acids and minimal caustics are added during the manufacturing process. In most liquid water treatment chemicals, substantial amounts of hazardous caustic are required to be added to maintain solubility of the components.

4. IWE products are packaged in recycled containers.

5. During the manufacturing process, there are no stoichiometric reagents used.

The only catalysts required are heat and cooling during the process. No waste is produced in the process.

6. Production of the IWE products does not require the addition of binders, or supplemental caustics to enhance solubility of the product.

7. By not using binders or solubility enhancers in the production process, all of the raw materials added are utilized and no by products or other forms of waste are produced in production or at the point of application.

8. No solvents or other auxiliary chemicals are used in the production of IWE products.

9. IWE products are designed to be utilized at ambient temperatures. IWE products are proven to improve thermal efficiency of boilers and chillers.

10. All the components utilized in the IWE products are biodegradable at a Waste Water Treatment Plant. All components meet discharge regulations to Municipal Water Treatment Plants.

11. IWE products are designed to be controlled using real time internet based control systems and data logging. Excess chemical use is avoided. On line monitoring of system cycles, feed activated by demand, and other types of feed and control are made using our program IWeservice.com.

12. IWE products are among the safest chemicals to be designed and available for use in facilities operations. IWE staff provides chemical systems so the customer does not need to handle chemicals. Our staff is trained in chemical safety and chemical transportation.

CS-5584 PDS