Florida A&M University-Steam Decentralization Project ... SPEC for University...A. Clean and disinfect potable-water storage tanks. B. Use purging and disinfecting procedure prescribed

Florida A&M University-Steam Decentralization Project 100% Issued for Construction

August 29,2012 GEl Project # 11060

SECTION 221223- FACILITY INDOOR POTABLE-WATER STORAGE TANKS

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:

1. Steel, pressure, potable-water storag'e tanks. 2. Steel, precharged, potable-water storage tanks.

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product indicated.

1. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for water storage tanks.

2. Include rated capacities, operating characteristics, and furnished specialties and accessories.

1.4 INFORMATIONAL SUBMITTALS

A. Product Certificates: For each type of potable-water storage tank, from manufacturer.

B. Source quality-control reports.

C. Purging and disinfecting repotis.

1.5 QUALITY ASSURANCE

A. ASME Compliance for Steel Tanks: Fabricate and label steel, ASME-code, potable-water storage tanks to comply with ASME Boiler and Pressure Vessel Code: Section VIII, "Pressure Vessels," Division 1.

B. Comply with NSF 61, "Drinking Water System Components - Health Effects," for potable-

water storage tanks. Include appropriate NSF marking.

FACILITY INDOOR POTABLE-WATER STORAGE TANKS 221223- 1


August 29, 2012 GEl Project# 11060

1.6 COORDINATION

A. Coordinate sizes and locations of concrete bases with actual equipment provided.

PART 2- PRODUCTS

2.1 STEEL, PRESSURE, POTABLE-WATER STORAGE TANKS

A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into theWork include, but are not limited to, the following:

1. 2.

Adamson Global Technology Corporation.

3. Aldrich Company, Inc.

4. Cemline Corporation.

5. Flo Fab inc.

6. GSW Water Heating.

7. HESCO Bastion Ltd.

8. Lochinvar Corporation.

9. PVI Industries, LLC. Precision Boilers.

10. Raypak. 11. 12.

RBI; a Mestek company.

13. RECO USA.

14. State Industries, Inc. Smith, A. 0. Water Products Co.; a division of A. 0. Smith Corporation.

15. Weben-Jarco, Inc. 16. 17.

Wendland Manufacturing Corp.

18. Wood, John Co. Wessels Company.

B. Description: Steel, horizontal and vertical, pressure-rated tank with cylindrical sidewalls.

C. Construction: ASME code, steel, constructed with nontoxic welded joints, for 125-psig

working pressure.

D. Manhole: Watertight, for tank more than 36 inches in diameter; same pressure rating as tank.

E. Tappings: Factory-fabricated steel, welded to tank before testing and labeling.

1. NPS 2 and Smaller: ASME Bl.20.1, with female thread. 2. NPS 2-1/2 and Larger: ASME B16.5, flanged.

F. Specialties and Accessories: Include tappings in tank and the following:

1. Pressure relief valve. 2. Pressure gage. 3. Thermometer. 4. Air-charging connection. 5. Gage glass, brass fittings, compression stops, and gage-glass guard.

FACILITY INDOOR POTABLE-WATER STORAGE TANKS 221223-2



G. Horizontal Tank Suppmis: Factory-fabricated steel saddles, welded to tank before testing and

labeling.

H. Vetiical Tank Supports: Factory-fabricated steel legs or steel skiti, welded to tank before testing and labeling.

I. Tank Interior Finish: Materials and thicknesses complying with NSF 61 barrier materials for

potable-water tank linings. Extend finish into and through tank fittings and outlets.

1. Lining Material: Glass.

2.2 SOURCE QUALITY CONTROL

A. Test and inspect potable-water storage tanks according to the following tests and inspections and prepare test repotis:

1. Pressure Testing for ASME-Code, Potable-Water Storage Tanks: Hydrostatically test to

ensure structural integrity and freedom from leaks. Fill tanks with water, vent air, pressurize to 1-1/2 times tank pressure rating, disconnect test equipment, hold pressure for 30 minutes with no drop in pressure, and check for leaks.

2. Pressure Testing for Non-ASME-Code, Pressure, Potable-Water Storage Tanks: Hydrostatically test to ensure structural integrity and freedom fi·om leaks at pressure of 50 psig above system operating pressure, but not less than 150 psig. Fill tanks with water, vent air, pressurize tanks, disconnect test equipment, hold pressure for two hours with no drop in pressure, and check for leaks.

B. Repair or replace tanks that fail test with new tanks, and repeat until test is satisfactory.

PART 3- EXECUTION

3.1 INSTALLATION

A. Install water storage tanks on concrete bases, level and plumb, firmly anchored. Anange so devices needing servicing are accessible.

1. Install horizontal tanks on fabricated steel suppotis and saddles.

B. Anchor tank supports and tanks to substrate.

C. Install thermometers and pressure gages on water storage tanks and piping if indicated. Thermometers and pressure gages are specified in Section 220519 "Meters and Gages for Plumbing Piping."

D. Install the following devices on tanks where indicated:

1. Pressure relief valves. 2. Temperature and pressure relief valves. 3. Vacuum relief valves.

FACILITY INDOOR POTABLE-WATER STORAGE TANKS 221223 - 3



4. Connections to accessories.

E. After installing tanks with factory finish, inspect finishes and repair damages to finishes.

3.2 CONNECTIONS

A. Piping installation requirements are specified in Section 221116 "Domestic Water Piping." Drawings indicate general arrangement of piping, fittings, and specialties.

B. Install piping adjacent to potable-water storage tanks to allow service and maintenance.

c. Connect water piping to water storage tanks with unions or flanges and with shutoff valves.

Connect tank drains with shutoff valves and discharge over closest floor drains.

1. General-duty valves are specified in Section 220523 "General-Duty Valves for Plumbing Piping."

a. Valves NPS 2 and Smaller: Gate or ball. b. Valves NPS 2-1/2 and Larger: Gate or butterfly. c. Drain Valves: NPS 3/4 gate or ball valve. Include outlet with, or nipple in outlet

with, ASME B1.20.7, 3/4-11.5NH thread for garden-hose service, threaded cap, and chain.

2. Water Piping Connections: Make connections to dissimilar metals with dielectric

fittings. Dielectric fittings are specified in Section 221116 "Domestic Water Piping."

3.3 IDENTIFICATION

A. Identify system components. Comply with requirements for identification specified in Section 220553 "Identification for Plumbing Piping and Equipment."

3.4 FIELD QUALITY CONTROL

A. Perform the following final checks before filling:

1. Verify that air precharge in precharged tanks is correct. 2. Test operation of tank accessories and devices. 3. Verify that pressure relief valves have correct setting.

a. Manually operate pressure relief valves. b. Adjust pressure settings.

4. Verify that vacuum relief valves are conect size.

a. Manually operate vacuum relief valves. b. Adjust vacuum settings.

B. Filling Procedures: Follow manufacturer's written procedures. Fill tanks with water to

operating level.

FACILITY INDOOR POTABLE-WATER STORAGE TANKS 221223-4



3.5 CLEANING

A. Clean and disinfect potable-water storage tanks.

B. Use purging and disinfecting procedure prescribed by authorities having jurisdiction or, if

method is not prescribed, use procedure described in AWWA C652 or as described below:

1. Purge water storage tanlcs with potable water. 2. Disinfect tanks by one of the following methods:

a. Fill tanks with water-chlorine solution containing at least 50 ppm of chlorine.

Isolate tanks and allow to stand for 24 hours. b. Fill tanlcs with water-chlorine solution containing at least 200 ppm of chlorine.

Isolate tanks and allow to stand for three hours.

3. Flush tanks, after required standing time, with clean, potable water until chlorine is not present in water coming from tank.

4. Submit water samples in sterile bottles to authorities having jurisdiction. Repeat procedure if biological examination made by authorities having jurisdiction shows evidence of contamination.

C. Prepare written repotis for purging and disinfecting activities.

END OF SECTION 221223

FACILITY INDOOR POTABLE-WATER STORAGE TANKS 221223 - 5



SECTION 232123 - HYDRONIC PUMPS

PART 1- GENERAL

1.1 SUMMARY

A. Section Includes:

1. Close-coupled, in-line centrifugal pumps. 2. Close-coupled, end-suction centrifugal pumps. 3. Separately coupled, horizontally mounted, in-line centrifugal pumps. 4. Separately coupled, vmtically mounted, in-line centrifugal pumps. 5. Separately coupled, base-mounted, end-suction centrifugal pumps. 6. Automatic condensate pump units.


A. Product Data: For each type of pump.

B. Shop Drawings: For each pump.

1. Show pump layout and connections. 2. Include setting drawings with templates for installing foundation and anchor bolts and

other anchorages. 3. Include diagrams for power, signal, and control wiring.

1.3 CLOSEOUT SUBMITTALS

A. Operation and maintenance data.

PART 2- PRODUCTS

2.1 CLOSE-COUPLED, IN-LINE CENTRIFUGAL PUMPS

A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Armstrong Pumps Inc. 2. ITT Corporation; Bell & Gossett. 3. TACO Incorporated.

B. Description: Factory-assembled and -tested, centrifugal, overhung-impeller, close-coupled, in-

line pump as defined in HI 1.1-1.2 and HI 1.3; designed for installation with pump and motor shafts mounted horizontally or vertically.

HYDRONIC PUMPS 232123- 1


August29, 2012 GEl Project# 11060

C. Pump Construction:

1. Casing: Radially split, cast iron, with threaded gage tappings at inlet and outlet, and

threaded companion-flange connections. 2. Impeller: ASTM B 584, cast bronze; statically and dynamically balanced, keyed to shaft,

and secured with a locking cap screw. For constant-speed pumps, trim impeller to match specified performance.

3. Pump Shaft: Steel, with copper-alloy shaft sleeve. 4. Seal: Mechanical seal consisting of carbon rotating ring against a ceramic seat held by a

stainless-steel spring, and bellows and gasket. Include water slinger on shaft between motor and seal.

5. Pump Bearings: Oil or grease lubricated with external lubrication capability.

D. Motor: Rigidly mounted to pump casing, manufactured by Siemens.

1. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

2. Comply with NEMA designation, temperature rating, service factor, and efficiency requirements for motors specified in Division 23 Section "Common Motor Requirements for HVAC Equipment."

a. Enclosure: Totally enclosed, fan cooled b. Materials: Cast iron. c. Motor Bearings: Permanently lubricated ball bearings. d. Efficiency: Premium efficient.

E. Capacities and Characteristics- see drawing schedules.

2.2 CLOSE-COUPLED, END-SUCTION CENTRIFUGAL PUMPS


1. Armstrong Pumps Inc. 2. ITT Corporation; Bell & Gossett. 3. Lancaster Pump. 4. TACO Incorporated.

B. Description: Factory-assembled and -tested, centrifugal, overhung-impeller, close-coupled, end-

suction pump as defined in HI 1.1-1.2 and Hll.3; designed for installation with pump and motor shafts mounted horizontally.


1. Casing: Radially split, cast iron, with replaceable bronze wear rings, drain plug at bottom

and air vent at top of volute, threaded gage tappings at inlet and outlet, and flanged connections.

HYDRONIC PUMPS 232123 - 2


August 29, 2012 GEI Project# 11060

2. Impeller: ASTM B 584, cast bronze; statically and dynamically balanced, keyed to shaft,

and secured with a locking cap screw. For constant-speed pumps, trim impeller to match specified performance.

3. Pump Shaft: Steel, with copper-alloy shaft sleeve . 4. Mechanical Seal: Carbon rotating ring against a ceramic seat held by a stainless-steel

spring, and bellows and gasket. Include water slinger on shaft between motor and seal. 5. Pump Bearings: Oil or grease lubricated with external lubrication capability.

D. Motor: Rigidly mounted to pump casing with integral pump suppoti, manufactured by Siemens.

1. Electrical Components, Devices, and Accessories: Listed and labeled as defined in

NFPA 70, by a qualified testing agency, and marked for intended location and application.


a. Enclosure: Totally enclosed, fan cooled b. Enclosure Materials: Cast iron . c. Motor Bearings: Permanently lubricated ball bearings. d. Efficiency: Premium efficient.

E. Capacities and Characteristics see drawing schedules:

2.3 SEPARATELY COUPLED, HORIZONTALLY MOUNTED, IN-LINE CENTRIFUGAL PUMPS

A. Manufacturers: Subject to compliance with requirements, available manufacturers offering

products that may be incorporated into the Work include, but are not limited to, the following:


B. Description: Factory-assembled and -tested, centrifugal, overhung-impeller, separately coupled,

in-line pump as defined in HI 1.1-1.2 and HI 1.3; designed for installation with pump and motor shafts mounted horizontally.


1. Casing: Radially split, cast iron, with threaded gage tappings at inlet and outlet, and

threaded companion-flange connections. 2. Impeller: ASTM B 584, cast bronze; statically and dynamically balanced, and keyed to

shaft. For pumps not frequency-drive controlled, trim impeller to match specified performance.

3. Pump Shaft: Steel, with copper-alloy shaft sleeve . 4. Mechanical Seal: Carbon rotating ring against a ceramic seat held by a stainless-steel

spring, and Buna-N EPT bellows and gasket. Include water slinger on shaft between motor and seal.




August 29,2012 GEl Project# 11060

D. Motor: Resiliently mounted to pump casing, manufactured by Siemens.




a. Enclosure: Totally enclosed, fan cooled b. Enclosure Materials: Cast iron. c. Motor Bearings: Permanently lubricated ball bearings. d. Efficiency: Premium efficient.

E. Capacities and Characteristics- see drawings schedules.

2.4 SEPARATELY COUPLED, VERTICALLY MOUNTED, IN-LINE CENTRIFUGAL PUMPS




in-line pump as defined in HI 1.1-1.2 and HI 1.3; designed for installation with pump and motor shafts mounted vetiically.


1. Casing: Radially split, cast iron, with threaded gage tappings at inlet and

outlet, replaceable bronze wear rings, and threaded companion-flange connections. 2. Impeller: ASTM B 584, cast bronze; statically and dynamically balanced, keyed to shaft,

and secured with a locking cap screw. For pumps not frequency-drive controlled, trim impeller to match specified performance.

3. Pump Shaft: Steel, with copper-alloy shaft sleeve. 4. Seal: Mechanical seal consisting of carbon rotating ring against a ceramic seat held by a

stainless-steel spring, and bellows and gasket. Include water slinger on shaft between motor and seal.


D. Shaft Coupling: Axially split spacer coupling.

E. Motor: Rigidly mounted to pump casing with lifting eyebolt and suppmiing lugs in motor enclosure, manufactured by Siemens.






2. Comply with NEMA designation, temperature rating, service factor, and efficiency

requirements for motors specified in Division 23 Section "Common Motor Requirements for HVAC Equipment."

a. Enclosure: Totally enclosed, fan cooled b. Enclosure Materials: Cast iron. c. Motor Bearings: Permanently lubricated ball bearings. d. Efficiency: Premium efficient.

F. Capacities and Characteristics see scehdule on drawings:

2.5 SEPARATELY COUPLED, BASE-MOUNTED, END-SUCTION CENTRIFUGAL PUMPS

A. Basis-of-Design Product: Subject to compliance with requirements, provide product indicated on Drawings or comparable product by one of the following: 1. Armstrong Pumps Inc. 2. Aurora Pump; Division ofPentair Pump Group. 3. ITT Corporation; Bell & Gossett. 4. PACO Pumps. 5. Peerless Pump Company. 6. TACO Incorporated.


end-suction pump as defined in HI 1.1-1.2 and HI 1.3; designed for base mounting, with pump and motor shafts horizontal.

c. Pump Construction:

1. Casing: Radially split, cast iron, threaded gage tappings at inlet and outlet, drain plug at

bottom and air vent at top of volute, and flanged connections. Provide integral mount on volute to support the casing, and provide attached piping to allow removal and replacement of impeller without disconnecting piping or requiring the realignment of pump and motor shaft.

2. Impeller: ASTM B 584, cast bronze; statically and dynamically balanced, keyed to shaft, and secured with a locking cap screw. For pumps not frequency-drive controlled, trim impeller to match specified performance.

3. Pump Shaft: Stainless steel. 4. Seal: Mechanical seal consisting of carbon rotating ring against a ceramic seat held by a

stainless-steel spring, and EPT bellows and gasket. 5. Pump Bearings: Grease-lubricated ball bearings in cast-iron housing with grease fittings.

D. Shaft Coupling: Molded-rubber insert and interlocking spider capable of absorbing vibration.

EPDM coupling sleeve for variable-speed applications.

E. Coupling Guard: Dual rated; ANSI Bl5.1, Section 8; OSHA 1910.219 approved; steel; removable; attached to mounting fi·ame.

F. Mounting Frame: Welded-steel frame and cross members, factory fabricated fi·om

ASTM A 36/A 36M channels and angles. Fabricate to mount pump casing, coupling guard, and motor.




G. Motor: Secured to mounting frame, with adjustable alignment, manufactured by Siemens.




a. Enclosure: Totally enclosed, fan cooled b. Motor Bearings: Permanently lubricated ball bearings. c. Efficiency: Premium efficient.

H. Capacities and Characteristics see schedule on drawings:

2.6 AUTOMATIC CONDENSATE PUMP UNITS

A. Basis-of-Design Product: Subject to compliance with requirements, provide product indicated on Drawings or comparable product by one of the following:

1. Beckett Corporation. 2. Hartell Pumps Div.; Milton Roy Co. 3. Little Giant Pump Co. 4. Mepco, LLC.

B. Description: Packaged units with conosion-resistant pump, plastic tank with cover, and

automatic controls. Include factory- or field-installed check valve and a 72-inch- (1800-mm-) minimum, electrical power cord with plug.

2.7 PUMP SPECIALTY FITTINGS

A. Suction Diffuser:

1. Angle pattern. 2. 175-psig (1204-kPa) 300-psig (2060-kPa) pressure rating, cast ductile-iron body and end

cap, pump-inlet fitting. 3. Bronze startup and bronze or stainless-steel permanent strainers. 4. Bronze or stainless-steel straightening vanes. 5. Drain plug. 6. . Factory-fabricated suppoti.

B. Triple-Duty Valve:

1. Angle or straight pattern. 2. 175-psig pressure rating, cast -iron body, pump-discharge fitting. 3. Drain plug and bronze-fitted shutoff, balancing, and check valve features. 4. Brass gage ports with integral check valve and orifice for flow measurement.




PART 3- EXECUTION

3.1 PUMP INSTALLATION

A. Comply with HI 1.4.

B. Install pumps to provide access for periodic maintenance including removing motors, impellers, couplings, and accessories.

c. Independently support pumps and piping so weight of piping is not supported by pumps and weight of pumps is not supported by piping.

D. Automatic Condensate Pump Units: Install units for collecting condensate and extend to open

drain.

E. Equipment Mounting: Install base-mounted pumps on cast-in-place concrete equipment bases.

1. Coordinate sizes and locations of concrete bases with actual equipment provided. 2. Construct bases to withstand, without damage to equipment, seismic force required by

code. 3. Construct concrete bases 4 inches high and extend base not less than 6 inches in all

directions beyond the maximum dimensions of base-mounted pumps unless otherwise indicated or unless required for seismic-anchor support.

F. Equipment Mounting: Install base-mounted pumps on cast-in-place concrete equipment base(s)

using elastomeric pads.

1. Minimum Deflection: 114 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 full perimeter of concrete base. 4. For supp01ted 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 high concrete base designed to withstand, without damage to equipment,·

seismic force required by code.

G. Equipment Mounting: Install in-line pumps with continuous-thread hanger rods and elastomeric hangers of size required to suppott weight of in-line pumps.

1. Comply with requirements for hangers and suppotts specified in Division 23 Section

"Hangers and Suppotts for HVAC Piping and Equipment."

3.2 ALIGNMENT

A. Engage a factory-authorized service representative to perfonn alignment service.

HYDRONIC PUMPS 232123-7



B. Comply with requirements in Hydronics Institute standards for aligmnent of pump and motor

shaft. Add shims to the motor feet and bolt motor to base frame. Do not use grout between motor feet and base fi·ame.

C. Comply with pump and coupling manufacturers' written instructions.

D. After aligmnent is correct, tighten foundation bolts evenly but not too firmly. Completely fill

baseplate with nonshrink, nonmetallic grout while metal blocks and shims or wedges are in place. After grout has cured, fully tighten foundation bolts.

3.3

A.

B.

c.

D.

E.

F.

G.

H.

I.

J.

K.

CONNECTIONS Drawings indicate general arrangement of piping, fittings, and specialties. Where installing piping adjacent to pump, allow space for service and maintenance.

Connect piping to pumps. Install valves that are same size as piping connected to pumps.

Install suction and discharge pipe sizes equal to or greater than diameter of pump nozzles.

Install triple-duty valve on discharge side of pumps.

Install suction diffuser and shutoff valve on suction side of pumps. Install flexible connectors on suction and discharge sides of base-mounted pumps between pump casing and valves. Install pressure gages on pump suction and discharge or at integral pressure-gage tapping, or install single gage with multiple-input selector valve. Install check valve and gate or ball valve on each condensate pump unit discharge. Ground equipment according to Division 26 Section "Grounding and Bonding for Electrical Systems." Connect wiring according to Division 26 Section "Low-Voltage Electrical Power Conductors and Cables."





SECTION 235313- BOILERFEEDWATERPUMPS

PART 1- GENERAL



1.2 SUMMARY

A. This Section includes the following:

1. Feedwater pumps and receivers.

1.3 DEFINITION

A. NPSH: Net-positive suction head.


A. Product Data: For each type of product indicated. Include rated capacity, temperature and NPSH required, pump performance curves with selection points clearly indicated, and furnished specialties and accessories.

B. Shop Drawings: Include plans, elevations, sections, details, dimensions, weights, loadings,

required clearances, method of field assembly, and attachments to other work.

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


A. Operation and Maintenance Data: For feedwater equipment to include in emergency, operation, and maintenance manuals.


A. Regulatory Requirements: Fabricate and test unit according to ASME PTC 12.1, "Closed Feedwater Heaters."

B. 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.

BOILER FEEDWATER PUMPS 235313-1



c. ASME Compliance: ASMEB31.1, "Power Piping," for systems more than 15 psig. Safety valves and pressure vessels shall bear the appropriate ASME label.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Preparation for Shipping: Clean flanges and exposed-metal surfaces and treat with anticorrosion compound after assembly and testing. Protect flanges, pipe openings, and nozzles with wooden flange covers or with screwed-in plugs.

B. Store units in dry location.

c. Retain protective flange covers and machined-surface protective coatings during storage.

D. Protect bearings and couplings against damage fi·om sand, grit, and other foreign matter.

E. Comply with manufacturer's written rigging instructions.

1.8 COORDINATION

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

PART 2 - PRODUCTS

2.1 FEEDWATER UNITS

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Reimer. 2. 3.

Alyan Pump.

4. BFS Industries, LLC. Aurora Pump; Pentair Pump Group.

5. 6.

Bryan Boilers; Bryan Steam, LLC.

7. Cleaver-Brooks; Div. of Aqua-Chem, Inc.

8. Deaerating Designs; a division of Precision Boilers, Inc.

9. Eastern Industrial Products, Inc.; Smith-Koch, Inc. Div. Domestic Pump; a unit ofiTT Fluid Technology.

10. Flotronics, Inc. 11. 12.

Gerow Equipment Co.; Pump & Hydraulic Division.

13. Hurst Boiler & Welding Company, Inc.

14. Industrial Steam.

15. Lockwood Products, Inc.; Sub. of John L. Underwood Co., Inc. Lattner Boiler Manufacturing.

16. MEPCO (Marshall Engineered Products Co.)17.

.

18. PVI Industries, LLC. Parker Boiler Co.




19. 20.

Roth Pump Company; a subsidiary ofRoy E. Roth Co.

21. Shippensburg Pump Co., Inc. Sellers Engineering Co.

22. Skidmore. 23. 24.

Stickle Steam Specialties Co., Inc.

25. Superior Boiler Works, Inc.

26. U.S. Deaerator Co.

US Filter.

B. Description: Factory-assembled and -tested unit consisting of a receiver, (Four) feedwater pumps, controls, and the following features and accessories:

1. Liquid-filled industrial thermometer graduated in both Fahrenheit and Celsius. 2. Level gage glass with stops at top and bottom. 3. Lifting eyes. 4. Companion flanges. 5. Pump, suction and discharge isolation valve, inlet strainer, discharge check valve, and

liquid-filled pressure gage. 6. Makeup Water Assembly: Float operated with integral valve with inlet strainer and

three-valve bypass. 7. Feedwater Heater: Sparge tube, thermostat, and control valve. 8. Factory-Installed Pipe, NPS 2-112 and Smaller: ASTM A312 (seamless) Schedule 80.

a. Stainless steel Fittings: ASTM A403 ASME Class 250.

9. Factory-Installed Pipe, NPS 3 and Larger:

a. ASTMA312 (seamless) Schedule 80. b. Fittings: ASTM A403; wall thickness to match adjoining pipe. c. Wrought Cast- and Forged-Steel Flanges and Flanged Fittings: ASME B16.5,

Class 150, including bolts, nuts, and gaskets.

C. Receiver:

1. Material: Stainless steel. 2. Additional corrosion protection:

a. 0.19-inch thickness allowance. b. Electrolytic corrosion-inhibitor anode.

3. Factory-Applied Insulation and Jacket: Minimum thickness of2 inches for mineral-fiber pipe and tank insulation. Cover insulation with stucco-embossed aluminum jacket.

4. Mounting Arrangement: Floor mounted on stand.

5. Mounting Frame: Structural-steel stand to support receiver and pumps.

D. Horizonal Feedwater Pump and motor: Flange-mounted, close-coupled, turbine; rated for 80 psig minimum working pressure and a continuous water temperature of at least 225 deg F.

1. Motor: Totally enclosed fan-cooled enclosure.

E. Control panel shall be unit mounted and factory wired and include the following:




1. NEMA 250, Type 4 enclosure. 2. Single-point field power interface to fused disconnect switch .

a. Branch power circuit to each motor and to controls with a disconnect switch or

circuit breaker.

3. NEMA-rated motor controller for each motor, and include a hand-off-auto switch and overcurrent protection.

a. Sequencing control for stand-by feedwater pump. Stand-by pump shall be able to

pump to each boiler through a selector switch.

4. Terminal blocks with numbered and color-coded wiring to match wiring diagram. 5. Wiring outside of an enclosure in a conduit. Make connections to motor with liquid tight

conduit. 6. Removable control mounting plate. 7. Visual indication of status and alarm. 8. Audible alarm and silence switch.

F. Feedwater Pump Control Sequence:

1. Corresponding boiler water-level controller starts and stops pump to maintain boiler water-level set point.

2. Visual indication of pump on status. 3. Visual alarm indication of pump failure. 4. Upon failure, operator shall be able to cross connect stand-by pump and select the boiler

which the stand-by pump will serve.

G. Receiver Makeup Water Control Sequence:

1. Electric level controller operates electric control valve to maintain receiver water-level set point.

2. Visual and audible alarm indication of low and high receiver-water level.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Before feedwater unit 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 feedwater unit performance, maintenance, and operations.

1. Final feedwater unit locations indicated on Drawings are approximate. Determine exact

locations before roughing-in for piping and electrical connections. 2. Proceed with installation only after unsatisfactory conditions have been corrected.




3.2 INSTALLATION

A. Install feedwater skid level on concrete base. Concrete base is specified in Division 23 Section

"Common Work Results for HVAC," and concrete materials and installation requirements are specified in Division 03.

B. Install unit to permit access for maintenance.

c. Suppoti piping independent of pumps.

D. Install patis and accessories shipped loose.

3.3 CONNECTIONS A. Piping installation requirements are specified in other Sections. Drawings indicate general

arrangement of piping, fittings, and specialties.

B.

c.

D.

E.

3.4

A.

Install piping adjacent to machine to allow service and maintenance. Connect makeup water piping and cooling-water piping with reduced-pressure backflow preventers. Install overflow drain piping to nearest floor drain. Install vents and extend to outdoors; terminate with elbow turned down and an insect screen. FIELD QUALITY CONTROL Manufacturer's Field Service: Engage a factory-authorized service representative to inspect, test, and adjust components, assemblies, and equipment installations, including connections. Repoti results in writing.

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, and to assist in testing.

C. Tests and Inspections:

1. Inspect field-assembled components, equipment installation, and piping and electrical

connections for compliance with manufacturer's written instructions. 2. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and

equipment. 3. Check bearing lubrication. 4. Verify proper motor rotation. 5. Start up service. 6. Repoii results in writing.

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




3.5 ADJUSTING

A. Adjust boiler water-level controls to properly stage unit.

B. Set field-adjustable, makeup water and cooling-water controls.

3.6 CLEANING

A. Clean equipment internally; remove coatings applied for protection during shipping and storage, foreign material, and oily residue according to manufacturer's written instructions.

B. Clean strainers.

3.7 DEMONSTRATION

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





SECTION 235700- HEAT EXCHANGERS FOR HVAC

PART 1- GENERAL



1.2 SUMMARY

A. Section includes double wall plate heat exchangers.

1.3 DEFINITIONS

A. TEMA: Tubular Exchanger Manufacturers Association.


A. Product Data: For each type of product.

1. Include rated capacities, operating characteristics, and furnished specialties and accessories.

1.5 INFORMATIONAL SUBMITTALS

A. Coordination Drawings: Equipment room, drawn to scale, on which the following items are shown and coordinated with each other, using input from installers of the items involved:

1. Tube-removal space. 2. Structural members to which heat exchangers will be attached.

B. Source quality-control reports.

C. Field quality-control reports.

D. Sample Warranty: For manufacturer's warranty.


A. Operation and Maintenance Data: For heat exchangers to include in emergency, operation, and maintenance manuals.

HEATEXCHANGERSFORHVAC 235700- 1



1.7 WARRANTY

A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or

replace components of domestic-water heat exchangers that fail in materials or workmanship within specified wa11'anty period.

1. Failures include, but are not limited to, the following:

a. Structural failures including heat exchanger, storage tank, and suppotis. b. Faulty operation of controls. c. Deterioration of metals, metal finishes, and other materials- beyond normal use.

2. Warranty Periods: From date of Substantial Completion.

a. Plate, Domestic-Water Heat Exchangers:

1) Brazed-Plate Type: One year. 2) Plate-and-Frame Type: One year.

PART 2- PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

2.2 GASKETED-PLATE HEAT EXCHANGERS


1. Alfa Laval Inc. 2. API Heat Transfer Inc. 3. APV; a brand of SPX Corporation. 4. Armstrong Pumps, Inc. 5. Delta T Heat Exchangers. 6. ITT Corporation; Bell & Gossett. 7. Mueller, Paul, Company. 8. Polaris Plate Heat Exchangers. 9. SEC Heat Exchangers. 10. Sondex, Inc. USA 11. TACO Incorporated. 12. Thermo Dynamics Ltd. 13. Tranter, Inc.

B. Configuration: Freestanding assembly consisting of frame suppoti, top and bottom carrying and

guide bars, fixed and movable end plates, tie rods, individually removable plates, and one-piece gaskets.

C. Frame:

HEATEXCHANGERSFORHVAC 235700-2



1. Capacity to accommodate 35 percent additional plates. 2. Painted carbon steel with provisions for anchoring to support.

D. Top and Bottom Carrying and Guide Bars:

1. Plate carrying and guiding bar shall be carbon steel/Aluminum up to 8 inch connection and for above 8 inch connection, the surfaces of the carrying and guide bars that come into contact with the plates shall be 304 stainless steel.

E. Tie Rods and Nuts: Steel or stainless steel.

F. Plate Material: 0.024 inch thick before stamping; Type 304 or Type 316 stainless steel. Plates

shall be double wall

to prevent intermixing.

G. Gasket Materials: Glue free and suitable for system fluids, either Nitrile or EPDM.

H. Piping Connections: Factory fabricated of materials compatible with heat-exchanger shell. Attach tappings to shell before testing and labeling. Piping connections 2.5" diameter and larger shall be studded port design with metal lining (same as plate material). Piping connection less than 2" diameter shall be NPT.

I. Enclose plates in solid aluminum removable shroud.

2.3 SOURCE QUALITY CONTROL A. Hydrostatically test heat exchangers to minimum of one and one-half times pressure rating

before shipment. · B. Heat exchangers will be considered defective if they do not pass tests and inspections.

c. Prepare test and inspection reports.

PART 3- EXECUTION

3.1

A.

B.

c.

3.2

A.

EXAMINATION Examine areas for compliance with requirements for installation tolerances and for structural rigidity, strength, anchors, and other conditions affecting performance of heat exchangers. Examine roughing-in for heat-exchanger piping to verify actual locations of piping connections before equipment installation. Proceed with installation only after unsatisfactory conditions have been corrected. GASKETED-PLATE HEAT-EXCHANGER INSTALLATION Install metal shroud over installed gasketed-plate heat exchanger according to manufacturer's written instructions.

HEATEXCHANGERSFORHVAC 235700- 3



3.3 CONNECTIONS

A. Comply with requirements for piping specified in other Section 232113 "Hydronic Piping" and

Section 232116 Hydronic Piping Specialties." Drawings indicate general arrangement of piping, fittings, and specialties.

B. Maintain manufacturer's recommended clearances for tube removal, service, and maintenance. C. Install piping adjacent to heat exchangers to allow space for service and maintenance of heat

exchangers. Arrange piping for easy removal of heat exchangers. D. Install shutoff valves at heat-exchanger inlet and outlet connections. E. Install relief valves on heat-exchanger heated-fluid connection and install pipe relief valves, full

size of valve connection, to floor drain. F. Install vacuum breaker at heat-exchanger steam inlet connection. G. Install thermometer on heat-exchanger and inlet and outlet piping, and install thermometer on

heating-fluid inlet and outlet piping. Comply with requirements for thermometers specified in Section 230519 "Meters and Gages for HVAC Piping."

H. Install pressure gages on heat-exchanger and heating-fluid piping. Comply with requirements

for pressure gages specified in Section 230519 "Meters and Gages for HVAC Piping."

3.4

3.5

FIELD QUALITY CONTROL A. Perform the following tests and inspections:

1. Leak Test: After installation, charge system and test for leaks. Repair leaks and retest until no leaks exist.

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

B. Heat exchanger will be considered defective if it does not pass tests and inspections. c. Prepare test and inspection reports.

CLEANING A. After completing system installation, including outlet fitting and devices, inspect exposed

finish. Remove burrs, dirt, and construction debris and repair damaged finishes. B. Refer to Facility Water Distribution and Domestic Water Piping for additional cleaning

requirements for potable water heat exchangers.

3.6 DEMONSTRATION A. Train Owner's maintenance personnel to adjust, operate, and maintain heat exchangers.

HEATEXCHANGERSFORHVAC 235700-4




HEAT EXCHANGERS FOR HVAC 235700-5


August 29, 2012 GEI Project # 11060

DEDICATED OUTDOOR-AIR UNITS 237433 - 1

SECTION 237433 - DEDICATED OUTDOOR-AIR UNITS

PART 1 - GENERAL



1.2 SUMMARY

A. Section includes factory-packaged units capable of supplying up to 100 percent outdoor air and

providing cooling and heating. 1.3 ACTION SUBMITTALS

A. Product Data: shall include dimensions, weights, capacities, certifications, component

performance, electrical characteristics, casing construction details, wiring interconnections, gauges and material finishes.

B. The submittal shall provide all technical information relevant to the product being provided,

including but not limited to, all the information shown in the schedules of this specification. It is the responsibility of the supplier to highlight any variances his equipment has with the requirements of this specification whether or not pre-approval has been obtained. Information shall be provided in the same measurement units as indicated elsewhere in this specification.

C. The submittal shall provide fan curves, with specified operating points clearly plotted.

D. The submittal shall provide coil selection worksheets, clearly showing proper consideration for

altitude, air density, glycol corrections and indicate coil tube fin and casing construction.

E. The submittal shall provide filter information, including: initial APD, final APD, dust spot efficiency, final dust holding capacity, filter media description, filter frame details, and filter removal details.

F. The manufacturer shall submit electrical requirements for power supply wiring including wiring

diagrams for interlock and control wiring, clearly indicating factory-installed and field-installed wiring.

G. The manufacturer shall submit the manufacturers recommended installation instructions.


A. Operation and Maintenance Data: For units to include in emergency, operation, and

maintenance manuals.




1.5 MAINTENANCE MATERIAL SUBMITTALS

A. Furnish extra materials that match products installed and that are packaged with protective

covering for storage and identified with labels describing contents.

1. Fan Belts: One set for each belt-driven fan. 2. Filters: One set for each unit.


A. The following shall be used as selection criteria and shall be as specified: airflow rates, external static pressures, water flow rates. The following are to be equaled or bettered: coil face velocities, filter face velocities, casing leakage rates, casing and base deflection. The following shall be met within 10% of specified values: water pressure drop.

B. Units shall be produced by a recognized manufacturer who maintains a local service agency and

parts stock.

C. Air handling units and major components shall be products of manufacturing firms regularly engaged in production of such equipment whose products have been in satisfactory use in similar service for not less than 10 years.

D. Fans shall conform to AMCA bulletins regarding testing and construction. Airfoil fans shall

bear the AMCA certified rating seal for airflow and sound.

E. Coils shall be ARI certified.

F. Filter media shall be ULC listed.

G. Units with factory wiring shall be factory UL/ETL/CSA approved and labeled. Failure to comply with this requirement will necessitate the manufacturer, at his expense, to have a certified UL/ETL/CSA representative inspect the equipment prior to affixing a label.

1.7 WARRANTY

A. Special Warranty: Manufacturer agrees to replace components of units that fail in materials or

workmanship within specified warranty period. PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Basis of Design Product: Subject to compliance with requirements, provide the product

indicated on Drawings by Haakon Industries. A comparable product by one of the following will be considered only with prior approval:

1. Greenheck Fan.




2. Munters Corporation, Dehumidification Division; Des Champs Products.

2.2 PERFORMANCE REQUIREMENTS

A. General Fabrication Requirements: Comply with requirements in ASHRAE 62.1, Section 5 - "Systems and Equipment," and Section 7 - "Construction and System Start-up."

B. Wind-Restraint Performance:

1. Basic Wind Speed: 120 mph. 2. Building Classification Category: II. 3. Minimum 10 lb/sq. ft multiplied by the maximum area of unit projected on a vertical

plane that is normal to the wind direction and 45 degrees either side of normal.

2.3 GENERAL

A. The manufacturer shall provide the factory assembled air handling unit in configuration as indicated on the drawings. The unit shall include all specified components installed at the factory. Field fabrication of units and their components will not be accepted.

B. The unit shall be designed to be supported by a concrete pad.

C. Units too large to be legally shipped by truck may be shipped to the site in sections. Otherwise

units shall be shipped in one piece.

2.4 CASING

A. Walls and roofs shall be constructed of 16 gauge galvanized steel 4” thick acoustic thermal panels. The inner liner shall be 22 gauge solid galvanized steel. Insulation shall be 4” thick 3 lb. density fiberglass. All permanently joined flanged panel surfaces shall be sealed with an individual strip of 1/8” x 3/8” tape sealer. Wall seams shall be turned inward to provide a clean flush exterior finish. All panel seams shall be sealed during assembly to produce an airtight unit.

B. Outdoor units shall have roof panels broken outward to provide a lapped joint watertight seal.

Outdoor roofs shall be sloped a minimum of 5/8” away from the access side.

C. All panels shall be joined on 8” centers using cadmium plated TEK screws.

D. All insulation edges shall be protected with metal lagging. Insulation systems using stickpins or adhesives are not acceptable.

E. Stiffeners of angle steel shall be supplied as required to maintain casing deflection criteria of

1/200 at 1.5 times the working pressure. If panels cannot meet this deflection, an additional internal reinforcing shall be added.




2.5 BASE CONSTRUCTION

A. Units shall be constructed from structural steel C-channel around the perimeter of the unit with

intermediate channel and angle iron supports. Units less than or equal to 20’ in length shall have a minimum 4” channel, and units greater than 20’ in length shall have a minimum 6” channel.

B. A 12 gauge checker plate floor shall be installed on the base. The floor shall be flat, reinforced

from below, with all seams continuously welded. Drive screw attachment and caulking are not acceptable. The base shall be provided with lifting lugs, a minimum of four [4] per unit section. The base shall be insulated with 2” fiberglass insulation and sheeted with a 22 gauge galvanized steel liner. Floors that “oil can” are not acceptable.

C. The manufacturer shall provide a 1.5” perimeter collar around the entire unit and around each

floor opening to ensure the unit is internally watertight. The entire base shall act as an auxiliary drain pan and hold up to 1.5” of water.

D. The manufacturer shall provide auxiliary drains in fan sections downstream of cooling coils and

in mixing sections.

E. All drain connections on floor mounted air handling units shall terminate at the side of the unit.

F. Maximum base deflection shall be ¼” on 240” unsupported span.

2.6 ACCESS DOORS

A. Access doors shall be manufactured from 16 gauge galvanized steel. The doors shall be double

wall construction with 22 gauge solid metal liner on the inside. Corners of the doors shall be continuously welded for rigidity. 4” 3 lb/cu ft. density insulation shall be sandwiched between the 16 gauge outer layer and the 22 gauge inner layer. Doors MUST be the same thickness as the unit casing to maximize thermal and acoustical resistance. A 12” round hermetically sealed double glazed laminated glass window shall be provided in each door. Hinges shall be continuous piano type stainless steel.

B. Two [2] “Ventlok” Model #310 high pressure latches operable from either side of the door shall

be provided. The door opening shall be fully gasketed with continuous ½” closed cell hollow round black gasketing and a metal encapsulated reinforcing backing that mechanically fastens to the door frame. Door frames shall be made from 16 gauge galvanized steel with the outside of the door flush with the unit. Fan compartments must have a door of minimum width to remove the motor.

C. All access doors must swing against the air pressure. i.e. positive pressure plenum doors must

swing in.

2.7 NON-SCROLLED FANS – PLENUM TYPE

A. Fans shall be airfoil as indicated in the schedule or the fans shall be centrifugal plenum type, designed without a scroll type housing. Fans shall incorporate a wheel, heavy gauge reinforced




steel inlet plate with removable spun inlet cone, structural steel frame, and shaft and bearings in AMCA Arrangement 3 configuration as an entire assembly.

B. All fan wheels shall have tapered spun wheel cones or shrouds providing stable flow and high

rigidity. The wheels shall be non-overloading type.

C. The blades shall be continuously-welded, die-formed Airfoil type, designed for maximum efficiency and quiet operation. Partial welding will not be acceptable on airfoil blades.

D. Impellers shall be statically and dynamically balanced and the complete fan assembly shall be

test balanced at the operating speed prior to shipment.

E. Shafts shall be sized for first critical speed of at least 1.43 times the maximum speed for the class. Bearings shall be heavy duty, grease lubricated, anti-friction ball or roller, self-aligning, pillow block type and selected for minimum average bearing life in excess of 200,000 hours at the maximum class RPM.

F. The manufacturer shall provide OSHA approved fully enclosed metal belt guard sides of

galvanized steel and an expanded metal face. The belt guard shall be sized to allow either sheave to be increased by two sizes.

G. The plenum fan assembly MUST have an enclosed safety screen as per OSHA Standards.

H. Fans shall have inlet OSHA approved inlet screens.

2.8 VIBRATION ISOLATION

A. An integral all welded steel vibration isolation base shall be provided for the fan and motor.

B. Isolators shall be free standing with sound deadening pads and leveling bolts.

C. The spring diameter to compressed operating height ratio shall be 1 to 1.

D. The spring deflection shall be 2”.

E. Isolators shall have earthquake restraints.

2.9 MOTORS AND DRIVES

A. VFDs shall be by ABB, Yaskawa, Siemens or approved equal by Siemens project management

B. Fan motors shall be mounted and isolated on the same integral base as the fan.

C. Fan motors shall be heavy duty, high efficiency open drip proof. Motors shall meet USA EPAct of 2010.

D. The v-belt drive shall have a variable pitch sheave for motors less than 7.5 hp and a constant

pitch sheave for motors of 7.5 or greater hp rated at 1.2 times the motor nameplate.




2.10 COILS

A. Fins shall have collars drawn, belled and firmly bonded to the tubes by means of mechanical

expansion of the tubes. No soldering or tinning shall be used in the bonding process. Coils shall be mounted in the unit casing to be accessible for service. Capacities, pressure drops and selection procedure shall be certified in accordance with ARI Standard 410.

B. Coils shall be fully enclosed within the casing and cooling coils shall be on mounted 304

stainless steel angle racks manufactured to allow coils to slide out individually. Heating coils shall be mounted on galvanized angle racks manufactured to allow coils to slide out individually.

C. Removable coil access panels shall be provided for removal of coils through the casing wall.

Coils shall be individually removable towards the access side. Coils must be individually racked, removable through the side access panels.

D. The manufacturer shall provide drain pans for all cooling coils. Drain pans shall be

continuously welded 304 stainless steel. The coil section must have intermediate drain pans and shall be interconnected with 1” stainless steel drain lines. Drain pans shall be IAQ sloped and fully drainable.

E. Coils shall be designed for chilled water or hot water service.

F. All pipe connections shall be on the same unit end, extended through the casing for ease of

connection.

G. Water coils handling recently mixed air, or direct outside air, shall be fully drainable by removing a single threaded plug for each coil row.

H. The primary surface shall be round seamless 5/8” .020 O.D. copper tube on 1½” centers,

staggered in the direction of airflow. All joints shall be brazed.

I. The secondary surface shall consist of rippled aluminum plate fins for higher capacity and structural strength. Fins shall have full drawn collars to provide a continuous surface cover over the entire tube for maximum heat transfer. Bare copper tube shall not be visible between fins and the fins shall have no openings or holes which might accumulate lint and dirt. Tubes shall be mechanically expanded into the fins to provide a continuous primary to secondary compression bond over the entire finned length for maximum heat transfer rates.

J. The casings shall be constructed of continuous galvanized steel. Coil side plates shall be of

reinforced flange type.

K. The coil connection locations shall permit universal mounting of the coil for right or left hand airflow and have equal pressure drop through all circuits. Coils shall be circuited for counterflow heat transfer to provide the maximum mean effective temperature difference for maximum heat transfer rates.

L. Headers on water coils shall be seamless copper tubing. The headers shall have intruded tube

holes to provide a large brazing surface for maximum strength and inherent flexibility.




M. The complete 5W coil core shall be tested with 315 pounds air pressure under warm water and

be suitable for operation at 250 psig working pressures. Individual tube and core tests before installation of headers is not considered satisfactory. Hydrostatic tests alone will not be acceptable. Water cooling coils shall be circuited for drainability.

2.11 FILTERS

A. Prefilters shall be 30% efficient, pleated and disposable. Each filter shall consist of a non- woven cotton and synthetic fabric media, media support grid and enclosing frame. The filter shall be listed by Underwriters’ Laboratories as Class 2.

B. Prefilters shall be installed in a prefabricated channel rack.

C. Prefilters shall be lift-out where access is available upstream of the filter, or slide out when

access is not available.

2.12 LIGHTS

A. Marine lights with a protective metal cage and glass seals, complete with duplex receptacles, shall be installed on the wall across from the access doors. A switch with an indicator light shall be installed on the unit. Electrical power shall be 120V/1/60.

2.13 FILTER GAUGES

A. The manufacturer shall provide Dwyer 2000 photohelic gauges.

B. Magnehelic gauges shall be accurate to ±2% of full range.

C. One gauge shall be provided for each filter bank.

D. Gauges shall be recessed into the cabinet casing.

2.14 FINISH

A. The unit shall be finish painted with two components, etch bond primer and alkyd enamel. The color shall be selected by the Owner. All uncoated steel shall be painted with grey enamel. All metal surfaces shall be prepainted with vinyl wash primer to ensure paint bonds to metal. All outdoor units shall be finish coated with polyurethane paint.

2.15 LOUVERS

A. Louver blades of extruded aluminum construction shall be fixed on a 45° angle and on 4” centers.

B. Frames shall be of extruded aluminum, minimum 4” wide.




C. Birdscreen shall be galvanized mesh with 0.5” x 0.5” openings and shall be fixed to the rear

with cadmium plated screws.

D. The finish shall be natural mill finish.

2.16 HOODS

A. Fresh air and exhaust air hoods shall be provided complete with 0.5” x 0.5” birdscreen and finished to match the color of the units.

B. Hoods shall be of 16 gauge galvanized steel construction.

C. The manufacturer shall provide continuous rain gutters with drain connections around the

perimeter of the hood.

2.17 ALUMINUM AIRFOIL DAMPERS

A. Aluminum airfoil frames and blades shall be a minimum of 12 gauge extruded aluminum. Blades shall be of a single unit airfoil design 6” wide.

B. Frames shall be extruded aluminum channel with grooved inserts for vinyl seals. Standard

frames shall be 2” x 4” x 5/8” on the linkage side, 1” x 4” x 1” on the other 3 sides.

C. Pivot rods shall be 7/8” hexagon extruded aluminum interlocking into the blade section. Bearings shall be of a double sealed type with a Celcon inner bearing on a rod within a Polycarbonate outer bearing inserted into the frame to prevent the outer bearing from rotating.

D. The bearing shall be designed so there are no metal-to-metal or metal-to-bearing riding surfaces.

The interconnecting linkage shall have a separate Celcon bearing to eliminate friction inside the linkage.

E. Blade linkage hardware shall be installed in a frame outside the airstream. All hardware shall

be of non-corrosive, reinforced cadmium plated steel.

F. Damper seals shall be designed for minimum air leakage by means of overlapping seals.

G. Jack shaft assemblies shall be provided for multiple damper installations.

2.18 DAMPER OPERATORS

A. The manufacturer shall provide factory installed electric damper operators with all linkage and

hardware internally mounted.

B. The manufacturer shall ensure operators are mounted in easily accessible sections of the air handling unit.




2.19 AIR LEAKAGE TESTING

A. The unit manufacturer shall factory pressure test each air handling unit to ensure the leakage

rate of the casing does not exceed 1.0% of the unit air flow at 1.5 times the rated static pressure. A leakage test shall be performed with VSD and humidifier panels installed.

B. The test shall be conducted in accordance with SMACNA duct construction manual. A

calibrated orifice shall be used to measure leakage airflow.

C. An officer of the manufacturing company shall certify test results and forward copies of the certified test results to the consultant.

D. “Double duct” or “side by side” units shall have each duct or side tested independently.

E. Positive pressure plenums shall be tested positively and negative pressure plenums shall be

tested negatively.

2.20 HEAT PIPE

A. Catalogued or published ratings shall be those obtained from tests carried out by the manufacturer or an independent testing agency signifying adherence to codes and standards in force. The manufacturer shall provide confirmation of testing.

B. In order to be considered, heat pipe manufacturers must have a minimum five years experience

in building heat pipes and be able to supply a list of commissioned installations for a period of over four years.

C. Heat pipe is constructed from one 1” integral finned tube. The fin is integral to the container

wall and continuous with the tube, creating a one piece tube and fin design.

D. The circumferential capillary wick shall be an integral part of the inner tube wall to provide a completely wetted surface for maximum heat piping capacity with minimum heat transfer resistance. Tubes designed for water or fluid flow and tubes with no inner capillary wick are not acceptable. An inner striation used to induce turbulence in fluid flows is not acceptable as a capillary wick. Tubes shall contain flow separators to provide laminar flow within the tubes at full design heat transfer capacity. Heat wheels or plate type heat exchangers are not permitted.

E. Refrigerants used shall be classified as Group 1 in CSA – B52 Safety Code for Mechanical

Refrigeration.

F. A vertical partition shall be provided and located as specified in the schedule isolating the exhaust and supply airstream from each other in order to prevent cross contamination. A drain pan shall be provided on the exhaust air discharge side of the heat recovery coil. The drain pan shall be of welded construction and tilted to a common drain point.

G. The Thermosyphon Run Around Heat Pipe Loop shall be controllable in the range of off to full

capacity by means of a Sporlan Electronic Stepper Valve located in the interconnecting liquid line.




H. The Sporlan electronic stepper valve shall be provided with a 24V transformer and Sporlan

control card able to accept 0-10VDC signal or 4-20ma signal as required by DDC control system.

2.21 ELECTRICAL

A. The manufacturer shall factory wire, test, and have all air handling units approved by CSA, ETL or UL.

B. Custom air unit shall be provided with factory mounted VFDs housed within a weather proof

NEMA 3R electrical cabinet. Electrical cabinet shall be accessible through a piano hinged access door with lockable handles. Factory mounted, lockable, unit mounted disconnect shall be accessible without opening the electrical cabinet, per NEC. Custom Air unit shall be provided with a single point power connection and fused branch power wiring.

C. The manufacturer shall supply one [1] single point power connection for each unit. The

manufacturer shall wire all 120 V/208V/60 Hz/1 Ph components such as lights, convenience outlet, controls, heaters, etc. from a panel with circuit breakers for each type of electric device. The panel for 120 V/208 V/60 Hz/3 Ph is fed from a separate service.

D. The manufacturer shall label and number code all wiring and electrical devices in accordance

with the unit electrical diagram. The manufacturer shall mount the devices in a control panel inside the unit’s service enclosure or on the outside and ensure the control panel meets the CSA, ETL or UL.

E. The manufacturer shall provide a system of motor control including all necessary terminal

blocks, motor contactors, motor overload protection, grounding lugs, auxiliary contactors and terminals for the connection of external control devices or relays. The manufacturer shall individually fuse all fan and branch circuits.

F. The manufacturer shall provide wiring from the motors to the motor control in accordance with

CSA, ETL or UL and contained by EMT conduit with liquid tight connections. The manufacturer shall seal the casing penetrations in a manner that eliminates air leaks.

2.22 TEST PORTS

A. The manufacturer shall provide Duro Dyne IP-4 test ports for unit air stream testing in each plenum section between each component within the AHU.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of the Work.




B. Examine roughing-in for piping, ducts, and electrical systems to verify actual locations of

connections before equipment installation.

C. Examine equipment supports for suitable conditions where units will be installed.

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

3.2 INSTALLATION

A. Comply with manufacturer's rigging and installation instructions for unloading units and

moving to final locations.

B. Equipment Mounting: Install floor or on-grade mounted units on a level cast-in-place concrete equipment bases.

1. Coordinate sizes and locations of concrete bases with actual equipment provided. Cast

anchor-bolt inserts into bases. 2. 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. 3. For supported equipment, install epoxy-coated anchor bolts that extend through concrete

base, and anchor into structural concrete floor. 4. Place and secure anchorage devices. Use setting drawings, templates, diagrams,

instructions, and directions furnished with items to be embedded. 5. Install anchor bolts to elevations required for proper attachment to supported equipment. 6. Install on concrete base of sufficient strength to support the units.

C. Install wall- and duct-mounted sensors. Install control wiring and make final connections to

control devices and unit control panel.

D. Install separate devices furnished by manufacturer and not factory installed.

E. The contractor shall provide all water piping so as to ensure that water circuits are serviceable and excessive lengths of pipe need not be dismantled.

F. The contractor shall provide valves in water piping upstream and downstream of each coil to

isolate the coils for maintenance and to balance and trim the system.

G. The contractor shall provide drain valves and vent cocks to each coil.

H. The contractor shall provide strainers ahead of all pumps and automatic modulating valves.

I. The contractor shall provide certified wiring schematics to the electrical division for the equipment and controls.

J. The contractor shall provide all necessary control wiring as recommended by the manufacturer.

K. The contractor shall provide condensate traps in accordance with the manufacturer’s recommendations.




L. Install new filters at completion of equipment installation and before testing, adjusting, and

balancing.

M. Install drain pipes from unit drain pans to sanitary drain. 3.3 CONNECTIONS

A. Where installing piping adjacent to units, allow space for service and maintenance.

B. Hydronic Piping Connections:

1. Comply with requirements in Section 232113 "Hydronic Piping" and Section 232116 Hydronic Piping Specialties."

2. Install shutoff valve and union or flange on each supply connection and install balancing valve and union or flange on each return connection.

C. Duct Connections:

1. Comply with requirements in Section 233113 "Metal Ducts." 2. Drawings indicate the general arrangement of ducts. 3. Connect ducts to units with flexible duct connectors. Comply with requirements for

flexible duct connectors in Section 233300 "Air Duct Accessories."

D. Electrical Connections: Comply with requirements for power wiring, switches, and motor controls in electrical Sections.

1. Install electrical devices furnished by unit manufacturer but not factory mounted.

3.4 STARTUP SERVICE

A. Perform startup service: Units shall not be operated for any purpose, temporary or permanent,

until ductwork is clean, filters are in place, bearings lubricated, and the fan has been test run under observation.

B. Complete installation and startup checks according to manufacturer's written instructions.

1. Inspect casing insulation for integrity, moisture content, and adhesion. 2. Verify that clearances have been provided for servicing. 3. Verify that controls are connected and operable. 4. Verify that filters are installed. 5. Clean coils and inspect for construction debris. 6. Verify bearing lubrication. 7. Clean fans and inspect fan-wheel rotation for movement in correct direction without

vibration and binding. 8. Adjust fan belts to proper alignment and tension. 9. Start unit. 10. Inspect and record performance of interlocks and protective devices including response to

smoke detectors by fan controls and fire alarm. 11. Operate unit for run-in period.




12. Calibrate controls. 13. Adjust and inspect high-temperature limits. 14. Verify operational sequence of controls. 15. Measure and record the following airflows. Plot fan volumes on fan curve.

a. Supply-air volume. b. Exhaust-air flow. c. Outdoor-air flow.

C. After startup, change filters, verify bearing lubrication, and adjust belt tension.

D. Remove and replace components that do not properly operate and repeat startup procedures as

specified above.

E. Prepare written report of the results of startup services. 3.5 ADJUSTING

A. Adjust initial temperature and humidity set points.

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

C. Occupancy Adjustments: When requested within 12 months from 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.

3.6 DEMONSTRATION

A. Minimum 4 hours training shall be provided by a factory authorized representative for training

to the owner's maintenance personnel to adjust, operate, and maintain units. END OF SECTION 237433



CONDENSING BOILERS 235216 - 1

SECTION 235216 - CONDENSING BOILERS

PART 1 - GENERAL



1.2 SUMMARY

A. This Section includes packaged, factory-fabricated and -assembled, gas-fired, water-tube,

and cast aluminum condensing boilers, trim, and accessories for generating hot water. 1.3 SUBMITTALS

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

accessories.

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

C. Source quality-control test reports.

D. Field quality-control test reports.

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

F. Warranty: Special warranty specified in this Section.

G. Other Informational Submittals:


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 795, "Commercial-Industrial Gas

Heating Equipment." Boilers shall be listed and labeled by a testing agency acceptable to authorities having jurisdiction.

E. ANSI/ASME CSD-1 Compliance: Boiler shall comply with the controls and safety devices

required on automatically operated boilers. 1.5 COORDINATION

A. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases.

Concrete, reinforcement, and formwork requirements are specified in Division 03. 1.6 WARRANTY


replace components of boilers that fail in materials or workmanship within specified warranty period.

1. Warranty Period for Water-Tube Condensing Boilers:

a. Heat exchanger: 10 years from date of initial installation warranty against material

or workmanship defects; 20 years from date of installation for thermal shock

b. Burner: 5 years from date of initial installation against material or workmanship defect

c. All other components: 1 year from date of initial installation, or 18 months from

date of factory shipment

2. Warranty Period for Cast-Aluminum Condensing Boilers:

a. Heat Exchanger and Burner: 5 years from date of shipment

b. Failure due to thermal shock: 10 years from date of shipment

c. All other components: 1 year from date of startup, warranty against material or workmanship defects; provided startup is completed within 6 months from the date of shipment

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Basis-of-Design Product: Subject to compliance with requirements, provide the product

indicated on Drawings or a comparable product by one of the following:

1. Patterson-Kelley; a division of Harsco Industrial 2. Camus Hydronics Ltd.




2.2 MANUFACTURED UNITS

A. Camus DynaForce

B. Description: Factory-fabricated, -assembled, and -tested, water-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. Water heating service only.

C. Heat Exchanger: Stainless-steel

D. Combustion Chamber: Stainless steel, sealed.

E. Burner: Natural gas, forced draft drawing from gas premixing valve.

F. Blower: Centrifugal fan to operate during each burner firing sequence and to prepurge and

postpurge the combustion chamber.

1. Motors: Comply with requirements specified in Division 23 Section "Common Motor Requirements for HVAC Equipment."

a. Motor Sizes: Minimum size as indicated. If not indicated, large enough so driven

load will not require motor to operate in service factor range above 1.0.

G. Gas Train: Combination gas valve with manual shutoff and pressure regulator.

H. Ignition: direct electric spark ignition and 100 percent main-valve shutoff.


A. Patterson-Kelley Mach

B. Description: Factory-fabricated, -assembled, and -tested, cast aluminum condensing boiler with heat exchanger sealed pressure tight, built on a steel base; including insulated jacket; flue-gas vent; water supply, return, and condensate drain connections; and controls. Water heating service only.

C. Heat Exchanger: cast aluminum

D. Header: removable, fabricated steel

E. Burner: Natural gas, forced draft; burner observation port.

F. Blower: Centrifugal fan, forced draft. Include prepurge and postpurge of the combustion

chamber.







G. Gas Train: Combination gas valve with manual shutoff and pressure regulator. Include 100

percent safety shutoff with electronic flame supervision.

H. Ignition: Electric-spark ignition with 100 percent main-valve shutoff with electronic flame supervision.

I. Water: pH level shall be maintained between 6.0 and 8.5.

2.4 TRIM

A. Comply with ASME CSD-1

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

C. Aquastat Controllers: Operating, firing rate, and high limit.

D. Safety Relief Valve: ASME rated.

E. 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.

F. Boiler Air Vent: Manual.

G. Drain Valve: Minimum NPS 3/4 hose-end gate valve.

2.5 CONTROLS

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

B. Boiler operating controls shall include the following devices and features:

1. Control transformer. 2. Set-Point Adjust: Set points shall be adjustable. 3. Sequence of Operation: Electric, factory-fabricated and field-installed panel to control

burner firing rate to reset supply-water temperature inversely with outside-air temperature. Refer to drawings for reset schedule.

a. Include master control function with automatic, alternating-firing sequence for

multiple boilers to ensure maximum system efficiency throughout the load range and to provide equal runtime for boilers. Master control function shall provide optimal/alternate firing sequence for cascade or parallel-sequential firing.

C. Burner Operating Controls: To maintain safe operating conditions, burner safety controls

limit burner operation.

1. High Cutoff: Manual reset stops burner if operating conditions rise above maximum boiler design temperature.

2. Low-Water Cutoff Switch: Electronic probe shall prevent burner operation on low water. Cutoff switch shall be manual-reset type.




3. Blocked Inlet Safety Switch: Manual-reset pressure switch field mounted on boiler

combustion-air inlet. 4. Audible Alarm: Factory mounted on control panel with silence switch; shall sound alarm

for above conditions. 5. Manual reset high & low gas pressure switches

D. Building Automation System Interface: Factory install hardware and software to enable

building automation system to monitor, control, and display boiler status and alarms.

1. Hardwired Points:

a. Monitoring: On/off status, common trouble alarm, low water level alarm

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

c. BACnet MSTP

2.6 ELECTRICAL POWER

A. Controllers, Electrical Devices, and Wiring: Electrical devices and connections are specified

in Division 26 Sections. 2.7 VENTING KITS

A. Kit: Complete system, ASTM A 959, Type 29-4C stainless steel, pipe, vent terminal,

thimble, indoor plate, vent adapter, condensate trap and dilution tank, and o-ring/gasket. 1. The flue vent shall be sized in accordance with boiler and flue vent manufacturer’s

requirements. Refer to drawings for basis of design.

B. Combustion-Air Intake: Complete system, stainless steel, pipe, vent terminal with screen, inlet air coupling, and sealant.


A. 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.

B. Test and inspect factory-assembled boilers, before shipping, according to ASME Boiler and

Pressure Vessel Code.

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




2.9 BOILER CIRCULATING (PRIMARY) PUMP

A. Boiler provider shall provide boiler circulating pump, strainer, multipurpose valve and

required accessories shall be with the boiler. Refer to pump schedule for requirements. 2.10 BOILER SKID

A. Mechanical provisions

1. Boiler provider shall provide boiler with a pre-fabricated primary hot water piping skid for a multiple boiler application with all required components for a complete and working installation including but not limited to the following: a. Gas train piping b. Flue c. Boiler circulating(primary) pump and required accessories d. Reverse return primary piping sized according to plans e. Relief, condensate neutralization with freeze protection and all required

components and accessories 2. Refer to boiler schedule for locations requiring boiler skids.

B. Electrical provisions

1. Skid should include all electrical connections, including but not limited to the following: a. Electrical service panels and associated transformers mounted on the skid b. Lighting including electrical circuits mounted on the skid c. Receptacles, disconnect and motor starters, including feeder from electrical panel

mounted on the skid 2. Refer to electrical drawings for size, quantity and additional information

C. Architectural provisions

1. Boiler cover roofing and siding: Provide factory-formed metal panels designed to be field

assembled by lapping side edges of adjacent panels and mechanically attaching panels to supports using exposed fasteners in side laps. Include accessories required for weather tight installation.

2. Tapered-Rib-Profile, Exposed-Fastener Metal Roof and Wall Panels: Formed with

raised, trapezoidal major ribs and intermediate stiffening ribs symmetrically spaced between major ribs.

a. Basis-of-Design Product: Subject to compliance with requirements, provide

Berridge Manufacturing Co., “R” Panel or comparable product by one of the following:

1. CENTRIA Architectural Systems. 2. MBCI; a division of NCI Building Systems, L.P. 3. McElroy Metal, Inc.

b. Metallic-Coated Steel Sheet: Zinc-coated (galvanized) steel sheet complying with

ASTM A 653/A 653M, G90 (Z275) coating designation, or aluminum-zinc alloy- coated steel sheet complying with ASTM A 792/A 792M, Class AZ50




(Class AZM150) coating designation; structural quality. Prepainted by the coil- coating process to comply with ASTM A 755/A 755M.

1. Nominal Thickness: 0.028 inch (0.71 mm). 2. Exterior Finish: Two-coat fluoropolymer. 3. Color: As indicated by manufacturer's designations.

c. Major-Rib Spacing: 12 inches (305 mm) o.c. d. Panel Coverage: 36 inches (914 mm). e. Panel Height: 1.25 inches (32 mm). f. Color: To be specified by FAMU.

3. Boiler cover structure: Boiler supplier to provide fully engineered steel skid and structure

to support boilers, boiler metal roof and metal siding as indicated on the drawings. Boiler supplier to be responsible for structural engineering of support system to withstand all structural design loads indicated on the structural drawings.

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. Install boilers level on concrete base. Concrete base is specified in Division 23 Section


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

C. Assemble and install boiler trim.

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

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




3.3 CONNECTIONS

A. Piping installation requirements are specified in other Division 23 Sections. Drawings

indicate general arrangement of piping, fittings, and specialties.

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

C. 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.

D. Connect piping to boilers, except safety relief valve connections, with flexible connectors of

materials suitable for service. Flexible connectors and their installation are specified in Division 23 Section "Common Work Results for HVAC,"

E. 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.

F. Connect hot-water 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. Boiler Venting:

1. Install flue venting kit and combustion-air intake. 2. Connect full size to boiler connections

I. Ground equipment according to Division 26 Section "Grounding and Bonding for Electrical

Systems."

J. Connect wiring according to Division 26 Section "Low-Voltage Electrical Power Conductors and Cables."


A. Perform tests and inspections and prepare test reports.



B. 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. Check and adjust initial operating set points and high- and low-limit safety set

points of fuel supply, water level and steam pressure. b. Set field-adjustable switches and circuit-breaker trip ranges as indicated.

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

D. 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.

E. Performance Tests:

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

a. Test for full capacity. b. Test for boiler efficiency at 20, 40, 60, 80, and 100 percent of full capacity.

Determine efficiency at each test point.

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. 9. The authorized boiler manufacturer’s representative shall be responsible for required

boiler performance testing. 3.5 DEMONSTRATION

A. The boiler provider shall provide 4 hours start up assistance per boiler.

B. The boiler provider shall provide the Owner's maintenance personnel 4 hours of training per

shift, to adjust, operate, and maintain boilers. END OF SECTION 235216



1.8 WARRANTY


replace pressure vessel that fail in materials or workmanship within specified wananty period.

1. Warranty Period for pressure vessel: 7 years from date of date of shipment.

PART 2- PRODUCTS

2.1 WATER-TUBEBOILERS

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1.

Miura Boiler

B. Description: Factory-fabricated, -assembled, and -tested boiler with vertical, fast recovery, multi-water tube design with rectangular headers attached to both ends. The design shall incorporate a "floating" header, which allows for fast expansion and contraction of the boiler tubes, regardless of feed water temperature or heating requirements, including insulated jacket, flue-gas vent, combustion-air intake connections, water supply and return connections, and controls.

C. Boiler Construction:

1. Multiple, vertical water tube. Once through, forced flow steam generator with no fixed steam or water line.

2. The water tubes shall be of straight, vertical construction being swaged at both ends. The water tubes shall be 2-3/8" outer diameter, SA-178A material (0.126" minimum thick), electric residence weld pipe, exceeding ASME codes. All water tubes shall be welded to the top and bottom headers.

3. The boiler shall be furnished with an adequate number of inspection openings to facilitate internal inspection and cleaning.

4. Lifting lugs shall be provided to facilitate rigging. 5. Boiler shall come with a skid mounted, steel frame. 6. The boiler shall come complete with an inner and outer casing. The inner casing must be

fabricated of minimum 16 gauge steel. There shall be insulation between the inner and outer casings such that the outer casing temperature will not exceed 120°F at maximum boiler capacity.

D. Burner:

1. Burner operation shall be three stage (Hi-Low-Off), step-fire control suitable for

operation on Natural Gas (or propane).

2. The burner shall be complete with integral motor and blower (forced draft fan of the centrifugal type) for supplying adequate combustion air with normal vent.

3. The following items shall be incorporated to the boiler/burner:

STEAM WATER-TUBE BOILERS 235233-3



a. A gas-electric igniter, an observation port and mounting brackets for pilot

and main flame scanner b. The main gas train shall be completely piped to each boiler and shall

include: two main gas actuator valves, ball valve type shut off valve, a main and pilot gas pressure regulator (suitable for 3 to 5 PSIG gas supply pressure).

4. Other equipment furnished on the gas train shall include high and low gas and air pressure switches.

E. Trim:

1. Water volume control shall consist of a low water cut-out and feed water pump

control probe in the boiler body tube; as well as three additional probes in a modified water column, two for pump control and one for low water cut-out with manual reset

2. Two water tube thermocouples located on selected water tubes shall be included

to detect temperature rise due to scale build-up or due to low water volume. This sensor when activated will shut down the boiler and trigger an alarm.

3. ASME code rated safety relief valve.

4. Steam pressure gauge and a pressure sensor with additional digital display.

5. Steam pressure switches, one high limit steam pressure switch and manual reset and one

back up control switch.

6. Each boiler must have an adequate horizontal separator to eliminate carry-over due to load swings. '

7. There shall be no "manholes" but two inch inspection plugs for internal inspection of the

header and tubes.

F. Boiler Feed Pump 1. Multi-staged centrifugal type pump, manufactured by Grundfos. Pump is sized to

suit boiler, and for use up to 225°F water from a deaerator. The material construction ofthe pump must be stainless steel and having mechanical seals.

2. The pumps shall be complete with electric motor drive, TEFC motor. 3. Boiler feed pump control shall be of the ON-OFF type, controlled by the boiler

thru the starter provided. The pump should be located under the water source with a minimum of7.5 feet of water height above the pump suction.

G. Economizer

1. Economizers shall be supplied for each of the boilers. The economizer shall be gas to liquid heat exchanger, designed to utilize heat in the boiler flue gasses to preheat boiler feed water.

2. Economizers shall be installed on the boiler, completely piped with minimal field assembly required.




3. Economizers shall consist of ASME section I pressure vessel, insulated and

covered with painted outer casings. It shall be drainable and suitable for dry operation in an emergency.

H. Blowdown System

1. The boiler shall be equipped with an automatic and manual blowdown system on each boiler. The automatic continuous blowdown system shall include a sensor, solenoid valve and a strainer.

I. Forced Draft Fan

1. Sized to provide all air required for combustion by blower with normal vent conditions.

2. The boiler is complete with a blower and connected to the combustion air duct. 3. Noise level shall not exceed 85 dbA one meter from the :fi·ont of the boiler.

J. Controls:

1. Refer to Section 230900 "Instrumentation and Control for HVAC." 2. Boiler operating controls shall include the following devices and features:

a. Control transformer. b. Sequence of Operation: Electric, factory-fabricated and field-installed panel to

control burner firing rate to maintain system pressure setpoint.

3. Fact

a. ory Controls:

Control panel to be mounted in the front of the boiler for easy access. b. Control panel shall be steel, with hinged door. c. Panel to contain an BL controller which provide a complete safety control and additional boiler management, feed water pump and blower motor starter control switches, control circuit transformer, indicating light, alarm buzzer. d. Flame safeguard controller shall be a Miura BL Controller. e. The boiler shall be equipped with the Miura BL Controller capable of

displaying the status of the boiler, alarms, cautions, settings and fault history. f. The panel cover shall clearly display the BL Display Module with controls to scroll through burner information. It shall also have an ON-OFF push button combustion control and an emergency stop push button switch. g. All electrical equipment shall be in conformity with the National Electrical Code. Oil, heat, and moisture resistant wiring materials must be used throughout. h. Provide different alarms to sound on different error situations. i. Wiring inside the panel shall be through clearly identified terminal strip.

STEAM WATER-TUBE BOILERS 235233- 5



4. Building Automation System Interface: Factory install hardware and software to enable

building automation system to monitor, control, and display boiler status and alarms via BacNetiP. a. A communication interface with building automation system shall enable building

automation system operator to remotely control and 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.


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 1 enclosure. 2. Wiring shall be numbered and color-coded to match wiring diagram. 3. Install factory wiring outside of an enclosure in a metal raceway. 4. Field power interface shall be to a fused disconnect switch. 5. Provide branch power circuit to each motor and to controls with disconnect switch or

circuit breaker. 6. Provide each motor with overcunent protection.


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




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






A. Install boilers level on concrete base. Concrete base is specified in Division 23 Section "Common Work Results for HVAC," and concrete materials and installation requirements are specified in Division 03.


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

D. 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.


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 steam and condensate piping to supply-, return-, and blowdown-boiler tappings with

shutoff valve and union or flange at each connection.

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

F. 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.

G. Boiler Flue Venting:

1. Connect full size to boiler connections. Comply with requirements in Section 235100 "Breechings, Chimneys, and Stacks."

H. Connect breeching to full size of boiler outlet. Comply with requirements in Section 235100

"Breechings, Chimneys, and Stacks" for venting materials.

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

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

Systems."

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









1. Perform installation and stmiup 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


equipment. a. Check and adjust initial operating set points and high- and low-limit safety set

points of fuel supply, water level, and steam pressure. b. Set field-adjustable switches and circuit-breaker trip ranges as indicated.



E. Performance Tests:


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 ofthe boilers.

a. For dual-fuel boilers, perform tests for each fuel. b. Test for full capacity. c. Test for boiler efficiency at each firing step. Determine efficiency at each test

point.

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 repoti and submit to Architect.

3.5 DEMONSTRATION

A. The boiler provider shall provide 4 hours stmi up assistance




SECTION 235216- CONDENSING BOILERS

PART 1- GENERAL



1.2 SUMMARY

A. This Section includes packaged, factory-fabricated and -assembled, gas-fired, water-tube, and cast aluminum condensing boilers, trim, and accessories for generating hot water.

1.3 SUBMITTALS

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

B. Shop Drawings: For boilers, boiler trim, and accessories. Include plans, elevations, sections,

details, and attachments to other work.

C. Source quality-control test repmis.

D. Field quality-control test reports.

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

F. Warranty: Special warranty specified in this Section.

G. Other Infotmational Submittals:


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.


Vessel Code.

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

CONDENSING BOILERS 235216- 1



B. The boiler provider shall provide the Owner's maintenance personnel 8 hours of training to

adjust, operate, and maintain boilers.






A. Camus DynaForce

B. Description: Factory-fabricated, -assembled, and -tested, water-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. Water heating service only.

C. Heat Exchanger: Stainless-steel

D. Combustion Chamber: Stainless steel, sealed.

E. Burner: Natural gas, forced draft drawing from gas premixing valve.

F. Blower: Centrifugal fan to operate during each burner firing sequence and to prepurge and

postpurge the combustion chamber.




G. Gas Train: Combination gas valve with manual shutoff and pressure regulator.

H. Ignition: direct electric spark ignition and 100 percent main-valve shutoff.


A. Patterson-Kelley Mach

B. Description: Factory-fabricated, -assembled, and -tested, cast aluminum condensing boiler with heat exchanger sealed pressure tight, built on a steel base; including insulated jacket; flue-gas vent; water supply, return, and condensate drain connections; and controls. Water heating service only.

C. Heat Exchanger: cast aluminum

D. Header: removable, fabricated steel

E. Burner: Natural gas, forced draft; burner observation pmt.

F. Blower: Centrifugal fan, forced draft. Include prepurge and postpurge of the combustion

chamber.




CONDENSING BOILERS 235216-3



D. UL Compliance: Test boilers for compliance with UL 795, "Commercial-Industrial Gas


E. ANSI/ASME CSD-1 Compliance: Boiler shall comply with the controls and safety devices

required on automatically operated boilers.

1.5 COORDINATION

A. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete, reinforcement, and formwork requirements are specified in Division 03.

1.6 WARRANTY

A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace components of boilers that fail in materials or workmanship within specified wa11'anty period.

I. Warranty Period for Water-Tube Condensing Boilers:

a. Heat exchanger: I 0 years from date of initial installation warranty against material

or workmanship defects; 20 years from date of installation for thermal shock

b. Burner: 5 years from date of initial installation against material or workmanship defect

c. All other components: I year from date of initial installation, or 18 months from

date of factory shipment

2. Wa11'anty Period for Cast-Aluminum Condensing Boilers:

a. Heat Exchanger and Burner: 5 years from date of shipment

b. Failure due to thermal shock: 10 years from date of shipment

c. All other components: 1 year from date of startup, wa11'anty against material or workmanship defects; provided startup is completed within 6 months from the date of shipment

PART 2- PRODUCTS

2.1 MANUFACTURERS

A. Basis-of-Design Product: Subject to compliance with requirements, provide the product indicated on Drawings or a comparable product by one of the following:

1. Patterson-Kelley; a division ofHarsco Industrial 2. Camus Hydronics Ltd.




G. Gas Train: Combination gas valve with manual shutoff and pressure regulator. Include 100

percent safety shutoff with electronic flame supervision.

H. Ignition: Electric-spark ignition with 100 percent main-valve shutoff with electronic flame supervision.

I. Water: pH level shall be maintained between 6.0 and 8.5.

2.4 TRIM

A. Comply with ASME CSD-1

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

C. Aquastat Controllers: Operating, firing rate, and high limit.

D. Safety Relief Valve: ASME rated.

E. 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.

F. Boiler Air Vent: Manual.

G. Drain Valve: Minimum NPS 3/4 hose-end gate valve.

2.5 CONTROLS

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

B. Boiler operating controls shall include the following devices and features:

1. Control transformer. 2. Set-Point Adjust: Set points shall be adjustable. 3. Sequence of Operation: Electric, factory-fabricated and field-installed panel to control

burner firing rate to reset supply-water temperature inversely with outside-air temperature. Refer to drawings for reset schedule.

a. Include master control function with automatic, alternating-firing sequence for

multiple boilers to ensure maximum system efficiency throughout the load range and to provide equal runtime for boilers. Master control function shall provide optimal/alternate firing sequence for cascade or parallel-sequential firing.

C. Burner Operating Controls: To maintain safe operating conditions, burner safety controls

limit' burner operation.

1. High Cutoff: Manual reset stops burner if operating conditions rise above maximum boiler design temperature.

2. Low-Water Cutoff Switch: Electronic probe shall prevent burner operation on low water. Cutoff switch shall be manual-reset type.




3. Blocked Inlet Safety Switch: Manual-reset pressure switch field mounted on boiler

combustion-air inlet. 4. Audible Alarm: Factory mounted on control panel with silence switch; shall sound alarm

for above conditions. 5. Manual reset high & low gas pressure switches

D. Building Automation System Interface: Factory install hardware and software to enable

building automation system to monitor, control, and display boiler status and alarms.

1. Hardwired Points:

a. Monitoring: On/off status, common trouble alarm, low water level alarm

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

c. BACnet MSTP


A. Controllers, Electrical Devices, and Wiring: Electrical devices and connections are specified

in Division 26 Sections.

2.7 VENTING KITS

A. Kit: Complete system, ASTM A 959, Type 29-4C stainless steel, pipe, vent te1minal, thimble, indoor plate, vent adapter, condensate trap and dilution tank, and o-ring/gasket.

1. The flue vent shall be sized in accordance with boiler and flue vent manufacturer's requirements. Refer to drawings for basis of design.

B. Combustion-Air Intake: Complete system, stainless steel, pipe, vent terminal with screen,

inlet air coupling, and sealant.


A. 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.

B. Test and inspect factory-assembled boilers, before shipping, according to ASME Boiler and

Pressure Vessel Code.

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




2.9 BOILER CIRCULATING (PRIMARY) PUMP

A. Boiler provider shall provide boiler circulating pump, strainer, multipurpose valve and

required accessories shall be with the boiler. Refer to pump schedule for requirements.

2.10 BOILER SKID

A. Mechanical provisions 1. Boiler provider shall provide boiler with a pre-fabricated primary hot water piping skid

for a multiple boiler application with all required components for a complete and working installation including but not limited to the following: a. Gas train piping b. Flue c. Boiler circulating(primary) pump and required accessories d. Reverse return primary piping sized according to plans e. Relief, condensate neutralization with freeze protection and all required

components and accessories 2. Refer to boiler schedule for locations requiring boiler skids.

B. Electrical provisions

1. Skid should include all electrical connections, including but not limited to the following: a. Electrical service panels and associated transformers mounted on the skid b. Lighting including electrical circuits mounted on the skid c. Receptacles, disconnect and motor starters, including feeder from electrical panel

mounted on the skid 2. Refer to electrical drawings for size, quantity and additional information

C. Architectural provisions

1. Boiler cover roofing and siding: Provide factory-formed metal panels designed to be field

assembled by lapping side edges of adjacent panels and mechanically attaching panels to supports using exposed fasteners in side laps. Include accessories required for weather tight installation.

2. Tapered-Rib-Profile, Exposed-Fastener Metal Roof and Wall Panels: Formed with

raised, trapezoidal major ribs and intermediate stiffening ribs symmetrically spaced between major ribs.

a. Basis-of-Design Product: Subject to compliance with requirements, provide

Berridge Manufacturing Co., "R" Panel or comparable product by one ofthe following:

1. CENTRIA Architectural Systems. 2. MBCI; a division ofNCI Building Systems, L.P. 3. McElroy Metal, Inc.

b. Metallic-Coated Steel Sheet: Zinc-coated (galvanized) steel sheet complying with

ASTM A 653/A 653M, G90 (Z275) coating designation, or aluminum-zinc alloy- coated steel sheet complying with ASTM A 792/A 792M, Class AZ50




(Class AZM150) coating designation; structural quality. Prepainted by the coil- coating process to comply with ASTM A 755/A 755M.

1. Nominal Thickness: 0.028 inch (0.71 mm). 2. Exterior Finish: Two-coat fluoropolymer. 3. Color: As indicated by manufacturer's designations.

c. Major-Rib Spacing: 12 inches (305 mm) o.c. d. Panel Coverage: 36 inches (914 mm). e. Panel Height: 1.25 inches (32 mm). f. Color: To be specified by FAMU.

3. Boiler cover structure: Boiler supplier to provide fully engineered steel skid and structure

to support boilers, boiler metal roof and metal siding as indicated on the drawings. Boiler supplier to be responsible for structural engineering of support system to withstand all structural design loads indicated on the structural drawings.

PART 3- EXECUTION

3.1 EXAMINATION




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



A. Install boilers level on concrete base. Concrete base is specified in Division 23 Section



C. Assemble and install boiler trim.

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

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




3.3 CONNECTIONS

A. Piping installation requirements are specified in other Division 23 Sections. Drawings

indicate general arrangement of piping, fittings, and specialties.


C. Install piping fi·om equipment drain connection to nearest floor drain. Piping shall be at least full size of connection. Provide an isolation valve if required.

D. Connect piping to boilers, except safety relief valve connections, with flexible connectors of

materials suitable for service. Flexible connectors and their installation are specified in Division 23 Section "Common Work Results for HVAC,"

E. 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.

F. Connect hot-water 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. Boiler Venting:

1. Install flue venting kit and combustion-air intake. 2. Connect full size to boiler connections

I. Ground equipment according to Division 26 Section "Grounding and Bonding for Electrical

Systems."

J. Connect wiring according to Division 26 Section "Low-Voltage Electrical Power Conductors and Cables."



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


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


equipment.




D. Other Informational Submittals:

1. ASME "A" Stamp Certification and Report: Submit "A" stamp certificate of

authorization as required by authorities having jurisdiction, and document hydrostatic testing of piping external to boiler.

2. Startup service reports.


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


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.


Vessel Code.

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

D. I=B=R Compliance: Boilers shall be tested and rated according to HI's "Rating Procedure for

Heating Boilers" and "Testing Standard for Commercial Boilers," with I=B=R emblem on a nameplate affixed to boiler.

E. UL Compliance: Test boilers for compliance with UL 795, "Commercial-Industrial Gas


F. Design, documentation, fabrication and testing shall comply with A.S.M.E., A.S.T.M.,

A.N.S.I., c-UL, and U.L. standards.

G. Boiler package is to bear UL or c-UL label.

H. Pressure piping and fittings shall comply with the A.N.S.I. B31.1 Code.

I. Flanges and fittings shall comply with the A.N.S.I. B16.5, B16.11, or B16.9 Code.

J. ANSI/ASME CSD-1 Compliance: Boiler shall comply with the controls and safety devices required on automatically operated boilers.

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.




SECTION 235233- STEAM WATER-TUBE BOILERS

PART 1 - GENERAL



1.2 SUMMARY

A. This Section includes packaged, water-tube boilers, trim, and accessories for generating steam with the following configurations, burners, and outputs:

1. Low NOx, high-pressure steam boiler with a design pressure of 170 PSIG for

operation for 70 to 150 PSIG with full steam output within five (5) minutes from a cold start-up

2. Step-fired burner, forced draft fan, gas train, valves, BL controller, boiler trim, and refractory

3. Factory assembled and tested for full steam performance prior to shipping 4. The boiler and economizer shall meet ASME Section I, be registered with

National Board, and be approved and listed as a package by ULand c-UL. Upon request, the boiler shall be able to meet FM, and/or ASME-CSDl.


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

B. Shop Drawings: For boilers, boiler trim, and accessories. Include plans, elevations, sections,

details, and attachments to other work.

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

2. Submittals shall be provided with the proposal and shall include: Specification table, boiler assembly, dimensional and electrical drawings; system diagrams and pipe connection/orientation drawings.

1.4 INFORMATIONAL

SUBMITTALS A. Source quality-control

test reports.

B. Field quality-control test reports.

C. Wa11'anty: Special warranty specified in this Section.




a. Check and adjust initial operating set points and high- and low-limit safety set

points of fuel supply, water level and steam pressure. b. Set field-adjustable switches and circuit-breaker trip ranges as indicated.



E. Petformance Tests:


equipment installations, including connections, and to conduct performance testing. 2. Boilers shall comply with performance requirements indicated, as detennined by field

perfonnance tests. Adjust, modify, or replace equipment to comply. 3. Petform field petfonnance tests to determine capacity and efficiency of boilers.

a. Test for full capacity. b. Test for boiler efficiency at 20, 40, 60, 80, and 100 percent of full capacity.

Determine efficiency at each test point.

4. Repeat tests until results comply with requirements indicated. 5. Provide analysis equipment required to determine performance. 6. Provide temporaty equipment and system modifications necessaty 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. 9. The authorized boiler manufacturer's representative shall be responsible for required

boiler perfotmance testing.

3.5 DEMONSTRATION

A. The boiler provider shall provide 4 hours start up assistance per boiler.

B. The boiler provider shall provide the Owner's maintenance personnel 4 hours of training per shift, to adjust, operate, and maintain boilers.



Documents

Florida A&M University-Steam Decentralization Project ... SPEC for University...A. Clean and disinfect potable-water storage tanks. B. Use purging and disinfecting procedure prescribed