235416_Fuel-Fired_Heaters_GS_June_2014.pdf

CONSTRUCTION ISSUE

Architectural & Refrigeration Upgrade

Commissary - Fort Myer, VA 28 Apr 2015

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SECTION 23 54 16

FUEL-FIRED HEATERS

(Edited from DeCA June 2014 Design Criteria)

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Gas fired unit heaters.

2. Gas fired rooftop furnaces.

3. Tubular infrared heaters.

B. Related Sections:

1. Division 01 Section Mechanical, Refrigeration, Food Service Equipment and Electrical Coordination.

2. Division 01 Section Quality Control.

3. Division 01 Section Closeout Procedures.

4. Division 23 Section Hangers and Supports for HVAC Piping and Equipment.

5. Division 23 Section Common Motor Requirements for HVAC Equipment.

6. Division 23 Section Duct Insulation.

7. Division 23 Section Breechings, Chimneys, and Stacks.

8. Division 23 Section Instrumentation and Control Devices for HVAC.

9. Division 26 Electrical.

1.2 QUALITY CONTROL

A. The following publications form a part of this Specification to the extent they are applicable:

1. ASHRAE 103 - Heating Seasonal Efficiency of Central Furnaces and Boilers, Methods of Testing.

2. NEMA MG 1 - Motors and Generators.

3. NFPA 54 (AGA Z223.1) - National Fuel Gas Code.

4. NFPA 70 - National Electrical Code.

5. NFPA 90A - Installation of Air Conditioning and Ventilating Systems.

6. NFPA 90B - Installation of Warm Air Heating and Air Conditioning Systems.

7. NFPA 211 - Chimneys, Fireplaces, Vents, and Solid Fuel Burning Appliances.

1.3 SUBMITTALS

A. Submittals for Review:

1. Division 01 Section Quality Control: Procedures for submittals.

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2. Product Data: Provide manufacturer's literature and data indicating rated capacities, weights, accessories, electrical nameplate data, and wiring diagrams.

3. Shop Drawings: Indicate assembly, required clearances, and locations and sizes of field connections.

4. Operation and Maintenance Data.

B. Submittals For Information:

1. Division 01 Section Quality Control: Procedures for submittals.

2. Manufacturer's Instructions: Indicate rigging, assembly, and installation instructions.

C. Submittals At Project Closeout:

1. Division 01 Section Closeout Procedures.

2. Operation and Maintenance Data: Include manufacturer's descriptive literature, operating instructions, maintenance and repair data, and parts listing.

3. Warranty: Submit manufacturers warranty and ensure forms have been filled out in

Government's name and registered with manufacturer.

4. Manufacturer Qualifications: Company specializing in manufacturing the Products specified in this Section with minimum three years experience.

5. The Contractor shall submit all certifications and testing data as a supplement to previously submitted O & M manuals at contract closeout.

1.4 REGULATORY REQUIREMENTS

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

PART 2 - PRODUCTS

2.1 GAS FIRED UNIT HEATERS

A. Acceptable Manufacturers:

1. Reznor/Thomas & Betts Corporation.

2. Lennox Industries, Inc.

3. Modine Manufacturing Company.

4. Trane.

B. Units: Self-contained, packaged factory assembled, pre-wired unit consisting of cabinet, supply fan, heat exchanger, burner, controls, and accessories. Provide separated combustion type where scheduled.

1. Heating: Natural gas fired.

2. Discharge Louvers: Individually adjustable horizontal and vertical louvers to match cabinet finish on propeller fan units.

3. Downturn nozzle: 60 degree nozzle to match outlet and cabinet finish on centrifugal fan units.

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C. Cabinet: Galvanized steel with baked enamel finish easily removed and secured access doors, glass fiber insulation and reflective liner.

D. Supply Fan: Propellor or Centrifugal forward curved type as scheduled with direct or belt drive.

E. Heat Exchanger: Type E-3 stainless steel welded construction.

F. Gas Burner:

1. Separated combustion type.

2. Gas valve provides 100 percent safety gas shut-off; 24 volt combining pressure regulation, safety pilot, manual set (On-Off), pilot filtration, automatic electric valve.

3. Electronic pilot ignition, with electric spark igniter with electronic flame supervision motor.

4. Non-corrosive combustion air blower with permanently lubricated motor.

5. Concentric flue kit.

G. Operating Controls:

1. Room Sensort: Provide a wall mounted sensor to cycle burner to maintain room temperature setting utilizing RMCS system.

2. Supply Fan Control: Energize from bonnet temperature independent of burner controls, with adjustable timed off delay and fixed timed on delay, with manual switch for continuous fan operation.

2.2 GAS FIRED ROOFTOP FURNACES

A. Acceptable Manufacturers:

1. Reznor.

2. Lennox Industries, Inc.

3. Modine.

4. Trane.

B. Units: Self-contained, power vented, rooftop, packaged, factory assembled, pre-wired unit consisting of cabinet and supply fan assembly, and duct furnaces each consisting of heat exchanger, burner, and roof curb.

C. Cabinet: Galvanized steel with baked enamel finish, easily removed and secured access doors, glass fiber insulation and reflective liner.

D. Supply Fan: Centrifugal type rubber mounted with belt drive, variable pitch motor pulley.

E. Filter: One inch thick glass fiber throw-away type, located to filter air before fan.

F. Gas Fired Duct Furnace Units: Self-contained, power vented, packaged, factory assembled, pre-wired unit consisting of cabinet, heat exchanger, burner, controls, and accessories.

1. Heat Exchanger: Stainless steel welded construction.

2. Gas Burner:

a. Power vented, modulating type with adjustable combustion air supply.

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b. Gas valve provides 100 percent safety gas shut-off; 24 volt combining pressure regulation, safety pilot, manual set (On-Off), pilot filtration, automatic electric valve.

c. Electronic pilot ignition, with electric spark igniter and electronic flame supervision.

d. Non-corrosive power venter with permanently lubricated motor.

3. Gas Burner Safety Controls:

a. Limit Control: Fixed stop at maximum permissible setting, de-energizes burner on excessive bonnet temperature, automatic resets.

G. Operating Controls:

1. Room Sensort: Provide a wall mounted sensor to cycle burner to maintain room temperature setting utilizing RMCS system.

2. Supply Fan Control: Energize from bonnet temperature independent of burner controls, with adjustable timed off delay and fixed timed on delay, with manual switch for continuous fan operation.

H. Disconnect Switch:

1. Provide a factory mounted disconnect switch in the control panel.

I. Roof Curb:

1. Roof Mounting Curb: 14 inches high galvanized steel, channel frame with gaskets, nailer strips, insulated, top to be level, designed in accord with Division 23 Section Hangers and Supports for HVAC Piping and Equipment.

2.3 TUBULAR INFRARED HEATERS

A. Acceptable Manufacturers:

1. Gas-Fired Products Inc., Space-Ray Div.

2. Reznor.

3. Schwank Inc.

4. Solaronics, Inc.

B. Units: Packaged, partially factory assembled, pre-wired unit consisting of cabinet, burner, heat exchanger, radiant tube, reflector, controls; for natural gas.

C. Heat Exchanger: Aluminized tubular steel combustion chamber with aluminized steel tube with aluminum reflector.

D. Gas Burner:

1. Gas Burner: Forced Draft type with adjustable combustion air supply.

2. Gas valve provides 100 percent safety gas shut-off; 24 volt combining pressure regulation, safety pilot, manual set (On-Off), pilot filtration, automatic electric valve.

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PART 3 - EXECUTION

3.1 EXAMINATION

A. Division 01 Section Quality Control: Verification of existing conditions before starting work.

B. Verify that space is ready for installation of units and openings are as indicated on Shop Drawings.

C. Verify that proper power supply is available.

D. Verify that proper fuel supply is available for connection.

3.2 INSTALLATION

A. Install in accordance with NFPA 90A and NFPA 90B.

B. Install gas fired units to NFPA 54.

C. Provide vent connections to NFPA 211. Refer to Division 23 Section Breechings, Chimneys, and Stacks.

D. Install unit heaters and dust furnaces with vibration isolation. Refer to Division 23 Section Vibration and Seismic Controls for HVAC Piping.

E. Provide operating controls; refer to Division 23 Section Instrumentation and Control Devices for

HVAC.

F. Provide connection to electrical power systems.

3.3 TUBULAR INFRARED HEATERS

A. Install all controls and all electrical power control wiring and devices from the point of electrical connection shown on the Electrical Drawings.

END OF SECTION