INFRARED POSITIVE PRESSURE TUBE GAS HEATING SYSTEM

***** Fostoria Industries, Inc. manufactures two types of gas fired infrared heaters used for comfort heating. The heater type covered by this guide specification is a positive pressure, gas infrared tube heating system consisting of a gas burner which heats a continuous metal tube and a reflector which directs infrared energy onto the floor or other objects. The other type manufactured by Fostoria Industries, Inc. is a high intensity gas infrared heater with cast aluminum burners, ceramic rayheads, and aluminum reflector.

This guide specification, SECTION 15540 - INFRARED POSITIVE PRESSURE TUBE GAS HEATING SYSTEM, can be used to specify Fostoria's Fostoria Gas Infrared Tube Heater. Fostoria's other gas fired infrared heater, Fostoria High Intensity Gas Infrared Heater, can be specified using SECTION 15540 – HIGH INTENSITY INFRARED GAS HEATER.

Fostoria Industries, Inc. also manufactures electric infrared heaters which can be specified using the guide specifications SECTION 15761 - QUARTZ LAMP INFRARED HEATERS and SECTION 15762 - METAL SHEATH INFRARED HEATERS.

Infrared radiation is invisible electromagnetic radiation with wavelengths longer than those of visible light. Infrared rays pass through the air and do not create heat until they strike an opaque object. Infrared heaters direct energy onto people and objects. Re-radiation from floors and other objects in turn heats the surrounding air. Infrared energy travels at the speed of light in straight lines from the heat source. This energy diffuses as a function of the square of the distance it travels from the heat source. Intensity therefore decreases in a proportional manner. For example, at 20 feet from the heat source energy intensity is 1/4 the intensity developed at 10 feet.

Heating levels will be determined by mounting height, spacing, reflector beam pattern, and gas input. For each Fostoria heater there are options for gas input, sizes, and method of installation. Refer to Fostoria product literature for availability of options, standard sizes, and guidelines for selection of heater model. Various options are listed in this specification section, but not all options apply to all heaters. The specifier will need to select the appropriate options, verify their availability, and delete non-applicable models and options. *****

PART 1 - GENERAL
1.1 / SUMMARY
A. / Section includes: Overhead mounted, gas-fired, positive pressure, tube, infrared heating system consisting of a gas burner which heats a continuous metal tube and a reflector which directs infrared energy downward.
***** List other specification sections dealing with work directly related to this section such as the following. *****
B. / Related sections:
***** Suspension rods, bracing, and other support components for mounting heaters may need to be designed for specific applications, detailed on Drawings, and specified in other sections. *****
1. / Section 05500 - Metal Fabrications: Metal [channels] [angles] [rods] [bracing] [fasteners] and other components for supporting heaters.
2. / Section 15190 - Fuel Piping: [Natural] [Liquid petroleum] gas piping and specialties for servicing infrared heaters.
3. / Section 16100 - Wiring Methods: Electrical supply, conduit, wiring, boxes, and wiring devices for infrared heater controls.
1.2 / REFERENCES
**** List by number and full title reference standards referred to in remainder of the specification section. Delete non-applicable references. *****
A. / ASTM A463 - Steel Sheet, Aluminum-Coated by the Hot-Dip Process.
1.3 / SUBMITTALS
A. / Submit in accordance with Section 01330 - Submittal Procedures:
1. / List of proposed products and product data.
2. / Shop drawings showing heating system layout, spacing, dimensions, method of attachment, structural support, and gas connections.
3. / Electrical wiring diagrams for connection of heater controls.
4. / Manufacturer's safety, installation, and maintenance instructions.
5. / Copy of warranty required by Paragraph 1.4 for review by Architect.
1.4 / QUALITY ASSURANCE
A. / Source limitation: Obtain infrared heating system from single manufacturer as a complete unit.
B. / Infrared heating system shall be certified for use in the United States and Canada by Canadian Standards Association (CSA) and shall bear CSA label.
1.5 / WARRANTY
A. / Provide under provisions of Section 01770 - Closeout Procedures:
1. / Five (5) year warranty for all tubing.
2. / One (1) year warranty for all other components.
PARTS 2 - PRODUCTS
2.1 / ACCEPTABLE MANUFACTURERS
A. / Fostoria Industries, Inc., P.O. Box 986, Fostoria, Ohio 44830-0986; 800-495-4525;
B. / Manufacturers of equivalent products submitted and approved in accordance with Section 01630 - Product Substitution Procedures.
2.2 / INFRARED CONTINUOUS TUBE GAS HEATING SYSTEM
**** Fostoria Gas Infrared Tube Heaters use a gas burner to generate heat which is distributed and vented through a continuous metal tube. A continuous, V-channeled aluminum reflector is positioned directly above the heating tube. This reflector directs infrared energy downward to people, objects, and floor. Fostoria Industries, Inc provides a straight tube series, Series FTH, with 59 models each with a specific gas input and tube length. The Series FTH configuration places the burner end and the vent end on opposite sides of the straight tube heating system. Fostoria Industries, Inc. also offers a modular U configuration tube heater, Series FUT. This series has 31 models each with a different gas input and overall tube length. The Series FUT configuration places the burner and vent ends at the same side of the U shaped heating system. Model numbers are in the format XXX-GI-G-TL where:
XXX is the series designation either FTH or FUT.
GI is gas input in BTUH multiplied by 1000.
G is type of gas where N indicates natural gas and P indicates liquid petroleum gas.
TL is total tube length in feet.
The specifier will need to select the model numbers and associated attributes from Fostoria product literature. *****
A. / Type: Overhead mounted, gas-fired, infrared, pre-wired, pre-piped, continuous tube heating system; Fostoria Gas Infrared Tube Heater Model [_____]-[_____]-[_____]-[_____] as manufactured by Fostoria Industries, Inc.
B. / Operation: System consists of gas fired burner assembly to generate heat which is distributed and vented through a continuous metal tube with a reflector positioned above tube to direct infrared energy downward.
***** For FTH Series select straight tube configuration and for FUT Series select U shaped tube configuration. *****
C. / System configuration: [Straight tube] [U shaped tube].
***** Depending on heater model, the overall tube length can vary in 5 feet increments (1524 mm) from 10 to 80 feet for straight tube configurations and from 20 to 80 feet for U shaped tubes. Select appropriate length as determined from Fostoria product literature and as indicated by model number. *****
D. / Total nominal tube length: [[10][15] [20] [25] [30] [35] [40] [45] [50] [55] [60] [65] [70] [75] [80] feet] .
***** Cross sectional dimensions of Series FTH tube and reflector are 16 inches wide by 8 inches high and for Series FUT are 35½ inches wide by 8 inches high. *****
E. / Cross sectional dimensions of tube and reflector: [[16] inches] wide by [[8] inches] high.
***** Depending on heater model, BTUH input can vary from 40,000 to 200,000. Select appropriate value from table in Fostoria product literature and as indicated by model number. *****
F. / BTU per hour input: [40,000] [60,000] [75,000] [100,000] [125,000] [150,000] [175,000] [200,000].
***** State type of fuel to be used and as indicated in model number. *****
G. / Type of fuel: [Natural gas] [Liquefied petroleum gas].
***** Typically the first 10 feet (3 m) of tube for Fostoria Gas Infrared Tube Heaters is the combustion chamber where the gas flame occurs. The remaining section of tubing is referred to as the heat exchanger. *****
H. / Tube: Fabricated from hot rolled (black) carbon steel.
1. / Combustion chamber: 4” Dia./16ga alumi-therm (an aluminized titanium alloy steel)
2. / Heat exchanger: 4” Dia./16ga hot rolled black carbon steel.
3. / Optional heat exchanger: 4” Dia./16ga aluminized – painted black
I. / Reflectors: Deep "V" channel type fabricated from 0.025 inch thick mill finish from aluminum and can be individually rotated from 0 to 45 degrees.
J. / Burner: Pre-wired and pre-piped with ½” FPT gas inlet and 120 VAC, single phase, 60 Hz electrical supply. Factory tested and ready to hang.
K. / Controls: Hot surface ignition, 100 percent safety shut-off. Control shall sense wattage draw of hot surface igniter before opening gas valve.
2.3 / HEATER ACCESSORIES
***** Fostoria Gas Infrared Tube Heaters are typically suspended from ceilings with chains. *****
Note: Chain & S-hooks included with heater to allow for a 24" suspension.
1. / 24V Control Kit
2. / 120V Thermostats & 24V Thermostats
3. / 45° Elbow Kit & 90° Elbow Kit
4. / Flexible 24” Gas Supply Hose
5. / 4” Sidewall Vent Kit (B Type)
6. / 4” Roof Vent Kit (B Type)
7. / Combustion Air Inlet Cap (4” w/bird screen)
8. / Unvented Exhaust Cap (required for all unvented applications)
9. / Reflector End Cap Kit (2caps)
10.
11.
12. / Mounting Chain and S-hook Kit (16’ of chain, (4) S-hooks)
Reflector Side Shields
Reflector Bottom Shields
PART 3 - EXECUTION
3.1 / PREPARATION
A. / Coordinate layout and installation of ceiling mounted infrared heating system with [lighting fixtures,] [mechanical equipment,] [air diffusers] [ductwork,] [fire-suppression system,] and other adjacent construction components to ensure there are no conflicts and minimum distances from infrared heating fixtures are maintained.
B. / Coordinate requirements for blocking, structural supports, and bracing to ensure adequate means for support and installation of infrared heating system.
C. / Coordinate requirements for gas fuel supply.
D. / Coordinate requirements for power supply, conduit, and wiring required for infrared heating system.
3.2 / INSTALLATION
A. / Comply with manufacturer's written safety and installation instructions and reviewed shop drawings.
***** Recommended mounting heights above floor surface vary from 10 to 30 feet depending on heater model and whether heater is mounted horizontally or at an angle. Recommendations are listed in Fostoria product literature. Heights may be indicated on drawings or listed in this section. In order to avoid potential conflicts, mounting heights should not be indicated in both drawings and specifications. *****
B. / Install infrared heating system at locations and heights indicated on Drawings. Ensure that the following minimum clearances from combustible surfaces are maintained:
***** Clearances may be reduced for noncombustible surfaces. Consult Fostoria Product literature for variations to the following minimum clearances. *****
1. / Side: 0° Tilt 40,000-100,000 [40 inches].
Side: 0° Tilt 125,000-200,000 [52 inches].
R/H Side: 45° Tilt 40,000-100,000 [64 inches].
R/H Side: 45° Tilt 125,000-200,000 [79 inches].
L/H Side : 45° Tilt 40,000-200,000 [8 inches].
2. / Top: 0° Tilt 40,000-100,000 [6 inches].
Top: 0° Tilt 125,000-200,000 [8 inches].
Top: 45° Tilt 40,000-100,000 [10 inches].
Top: 45° Tilt 125,000-200,000 [12 inches].
3. / Below: 0° Tilt 40,000-100,000 [70 inches].
Below: 0° Tilt 125,000-200,000 [82 inches].
Below: 45° Tilt 40,000-100,000 [73 inches].
Below: 45° Tilt 125,000-200,000 [85 inches].
Note: Clearances can be reduced by 50% at locations 25 feet downstream from burner.
C. / Install heating fixtures securely to supporting substrate so that fixtures are level and aligned with each other and adjacent building elements. Use type and length of fastener as recommended by manufacturer for type of substrate.
D. / Suspended ceiling installation: Suspend heating system from ceiling with chains as detailed on Drawings. Attach suspension members to mounting brackets integral with system components.
E. / Where gas piping and electrical conduit is exposed, align vertically and horizontally and parallel with lines of building. Coordinate mounting heights and spacing of components so that finished work is neat and orderly and presents an organized appearance.
F. / Connect to control devices in accordance with Section [16100 - Wiring Methods] [_____].
G. / Controls: Install controls [and thermostats] in accordance with manufacturer's wiring diagrams and instructions.
3.3 / TESTING AND DEMONSTRATION
A. / Inspect installation to verify secure and proper mounting. Test heating system to verify operation, control functions, infrared pattern coverage, and that operating components are functional. Correct deficiencies.
B. / Demonstrate operation of heating system to Owner's designated representatives.
3.4 / PROTECTING
A. / Protect infrared heating system after installation from damage from construction operations. If damage occurs, remove and replace damaged components as required to provide system in original, undamaged condition.
END OF SECTION
INFRARED POSITIVE PRESSURE TUBE GAS HEATING SYSTEM