Renovation of a mixed-use development in Joplin, Missouri. Completed plans call for the renovation of a educational facility.

Removal and Replacement of Boilers at Memorial Education Center 1.1 Removal of old (2) Raypak Boilers and disposal Supply and Installation of (4) 1 million BTU condensing boilers (4 million BTU total) It is the contractor's responsibility to obtain any and all work permits. 1.2 SUMMARY A. This Section includes packaged, factory-fabricated and -assembled, gas-fired, fire-tube condensing boilers, trim, and accessories for heating hot water. 1.3 SUBMITTALS A. Product Data: Include performance data, operating characteristics, furnished specialties, and accessories. B. 1. Wiring Diagrams: Power, signal, and control wiring. C. Source quality-control test reports: Indicate and interpret test results for compliance with performance requirements before shipping. D. Field quality-control test reports: indicate and interpret test results for compliance with performance requirements. E. Warranty: Standard warranty specified in this Section. 1.4 INFORMATIONAL SUBMITTALS 1.5 CLOSEOUT SUBMITTALS A. Operation and Maintenance Data: For boilers to include in emergency, operation, and maintenance manuals. JOPLIN SCHOOLS REMOVAL AND REPLACEMENT OF BOILER AT MEMORIAL EDUCATION CENTER 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. AHRI Compliance: Boilers shall be AHRI listed and must meet the minimum efficiency specified under AHRI BTS-2000 as defined by the Department of Energy in 10 CFR Part 431. E. ANSI Compliance: Boilers shall be compliant with ANSI Z21.13 test standards for US and Canada. F. CSA Compliant: Boilers shall be compliant with CSA certification. 1.7 COORDINATION 1.8 WARRANTY A. Standard Warranty: Boilers shall include manufacturer's standard form in which manufacturer agrees to repair or replace components of boilers that fail in materials or workmanship within specified warranty period. 1. Warranty Period for Fire-Tube Condensing Boilers: a. Heat Exchanger, Pressure Vessel and Condensation Collection Basin shall carry a 10 year limited warranty against defects in materials or workmanship and failure due to thermal shock. b. All other components shall carry a one year warranty from date of boiler start up. 2. Warranty shall include a 1-year labor warranty. PART 2 - PRODUCTS 2.1 MANUFACTURERS Boiler of equal product by one of the following: 1. Aereo 2. Fulton 3. Laars Heating Systems Company. 4. Lochinvar Corporation. 5. NTI 6. Raypak 2.2 CONSTRUCTION A. Description: Boiler shall be natural gas fired, fully condensing, and fire tube design. The boiler shall be factory-fabricated, factory-assembled, and factory-tested, fire-tube condensing boiler with heat exchanger sealed pressure tight, built on a steel base; including insulated jacket; flue gas vent; combustion-air intake connections; water supply, return, and condensate drain connections; and controls. B. Heat Exchanger: The heater exchanger shall bear the ASME "H" stamp for 160 psi working pressure and shall be National Board listed. The heat exchanger shall be constructed of a fully welded 316L stainless steel and of fire tube design. The heat exchanger shall be Model Turndown Minimum Input Maximum Input FB 751 15:1 50,000 - 1,000,000 H. Ignition: Spark ignition with 100 percent main-valve shutoff with electronic flame supervision. I. Casing: 1. Jacket: Heavy gauge primed and painted steel jacket with snap-in closures. 2. Control Compartment Enclosures: NEMA 250, Type 1 A. 3. Insulation: Minimum inch thick, mineral fiber insulation surrounding the heat exchanger. 4. Combustion-Air Connections: Inlet and vent duct collars. J. Characteristics and Capacities: As shown on the equipment schedules on the plans. 2.3 TRIM A. Safety Relief Valve: 1. Size and Capacity: 50 lb. 2. Description: Fully enclosed steel spring with adjustable pressure range and positive shutoff; factory set and sealed. designed for a single-pass water flow to limit the water side pressure drop. There shall be no banding material, bolts, gaskets or "O" rings in the heat exchanger design. Cast iron, aluminum, or condensing copper tube boilers will not be accepted. C. Condensate Collection Basin: Fully welded 316L stainless steel. D. Intake Filter and Dirty Filter Switch: Boiler shall include an intake air filter with a factory installed air pressure switch. The pressure switch will alert the end user on the screen of the boiler that the intake filter is dirty and needs to be changed. E. Pressure Vessel: The pressure vessel shall be in accordance with ASME Section IV pressure vessel code. The pressure vessel shall be designed for a single-pass water flow to limit the water side pressure drop. Pressure drop shall be no greater than 3.2 psi at 180 gpm. The pressure vessel shall contain a volume of water no less than: Model Water Content FB 751 73 gallons F. Burner: Natural gas, forced draft single burner premix design. The burner shall be high temperature stainless steel with a woven Fecralloy outer covering to provide modulating firing rates. The burner shall be capable of the stated gas train turndown without loss of combustion efficiency. . Blower: Boiler shall be equipped with a pulse width modulating blower system to precisely control the fuel/air mixture to provide modulating boiler firing rates for maximum efficiency. The burner firing sequence of operation shall include pre-purge, firing, modulation, and post-purge operation. 1. Motors: Comply with requirements specified in Division 23 Section "Common Motor Requirements for HVAC Equipment." G. Gas Train: The boiler shall be supplied with two gas valves designed with negative pressure regulation and shall be capable of the following minimum turndowns