Specifications for
Reflect-O-Ray® EDS 6 GAS FIRED SYSTEMS
PART 1 - GENERAL
It is the intent of this
specification to identify design requirements and minimum standards for the quality,
construction, delivery, installation, and operation of the low intensity, vacuum vented,
gas fired infrared heating equipment. Minor variations, in accordance with standard
practice, shall be indicated on the shop drawings and submitted for approval.
1.1 - CODES AND STANDARDS
1. The entire heating system shall be designed certified
to:
a. United States - CSA Certified to "Gas Infrared Heaters" conforming to the ANSI
Z83.20 - (Current Standard).
b. Canada - CSA Certified "Gas Infrared Heaters" conforming to
CSA 2.34 (Current Standard).
1.1.2 Installation shall conform to
local codes and local gas authorities including the National Electrical Code, National
Fuel Gas Code, and applicable ANSI, NFPA & CAN/CGA & CSA codes.
1.2 - QUALITY ASSURANCE
1.2.1 The material construction and operation of
the infrared heating equipment shall conform to the performance specifications contained
herein. Approved manufacturer is: Combustion Research Corporation, 2516 Leach Rd.,
Rochester Hills, MI, 48309; Tel. No. 248.852.3611, Fax. No. 248.852.9165.
1.2.2 Manufacturer shall warrant mechanical and
electrical components for a period of one year from original invoice date.
1.2.3 Manufacturer shall warrant radiant tube for a
period of ten (10) years (against internally created corrosion) from the original invoice
date provided system is installed and maintained in accordance with the owner's manual -
see warranty statement for details.
1.2.4 System shall be furnished complete with
Burner(s), Vacuum Exhauster(s), Tubular infrared emitters, Fittings, Reflector Shields,
Hangers and System Controls.
1.3 - MANUFACTURER AND INSTALLER QUALIFICATIONS
1.3.1 The low intensity, gas fired infrared heating
system shall be a product of a manufacturer who has had at least ten years experience in
design and fabrication and who is regularly engaged in the manufacture of the type of gas
fired low intensity infrared heating equipment specified herein. Only manufactures who can
submit evidence of actual installations of comparable designed construction, and that the
products have proven practical, durable, and require a minimum of maintenance, will be
qualified under this specification.
1.3.2 Installation of the gas fired low intensity
infrared heating equipment shall be by supervised by an authorized representative of the
heater manufacturer and shall be in accordance with approved installation drawings.
Mechanics shall be skilled and experienced in the erection of the low intensity infrared
heating equipment of the type specified herein.
1.4 - DELIVERY AND STORAGE
1.4.1 Materials shall be shipped in the
manufacturers standard protective packaging to the designated site.
1.4.2 The installing contractor is responsible for
receiving, unloading, and storage of materials. Storage shall be in dry locations free
from dust and water and available for inspection and handling. Handle equipment carefully
to prevent damage. Remove damaged items that cannot be restored to like new condition and
replace with new items.
PART 2 - PRODUCT
2.1 - BURNERS
2.1.1 Burners shall be capable of
firing at 240,000 BTU/hr or 360,000 BTU/hr inputs, with natural gas and at 240,000 BTU/hr
or 360,000 BTU/hr inputs, with LP (propane) gas.
2.1.2 Burner power requirements 24 Volt, 60 Hz AC
40VA.
2.1.3 Burners shall include the following features:
a) Burners shall operate under a negative (vacuum) pressure.
b) Fitted with a 6" diameter combustion air inlet with a fixed combustion
air-metering orifice.
c) Burners shall be fitted a differential air pressure switch so as to prove
adequate combustion air is present before burner fires.
d) Burners shall be fitted with solid state, (3) try, (1) hour reset electronic
controls with spark ignition & 100% lockout in event of low fire or main flame
failure.
e) Burner(s) shall have a minimum 15-second pre-purge before ignition.
f) Burner(s) shall casing to be constructed of 16 Ga. aluminized steel, powder
coated.
g) Burner(s) shall be fitted with inspection window for visual inspection of spark
and flame.
h) Burner(s) shall be fitted with 3 indicator lights - "Power On",
"Air Flow On", & "Burner On".
i) Burner controls, differential pressure switch, gas valve, electrical
wiring, etc. shall be segregated from the combustion air supply.
2.1.4 Burner(s) and vacuum
exhauster are to be electrically interlocked.
2.2 - VACUUM EXHAUSTER
2.2.1 Dynamically balanced forward inclined fan
wheel constructed of stainless steel with a cast iron hub.
2.2.3 Direct Drive.
2.2.4 Inlet cone and venturi plate engineered for
maximum efficiency.
2.2.5 16 gauge aluminized steel housing and
mounting bracket to be powder coated.
2.2.6 Motor to be one half (1/2) HP dual voltage
(115/230V 6.2/3.1 Amps) or one (1) HP dual voltage (115/230 V 12/6 Amps) - 3450 RPM, 60 Hz
capacitor start internally protected, class B insulation. Sealed ball bearings front and
rear.
2.2.7 Vibration isolating rubber mounts.
2.2.8 Stainless steel bird screen on side wall
venting.
2.2.9 Six-inch (6.0") Stainless steel
insulated flexible vibration isolation connector.
2.3 - SYSTEM CONTROLS
2.3.1 Thermostat provided by equipment
manufacturer, 115V, 16 amp rating.
2.3.2 Each system, which includes a vacuum exhauster and burner(s), shall be
wired so that they are electrically interlocked and controlled by thermostat action.
2.4 - RADIANT TUBE HEAT EXCHANGING NETWORK
2.4.1 Combustion tube shall
be 20' long 16 gauge alumatherm steel 6.0" OD swaged one end.
2.4.2 Balance of radiant tubing shall be
constructed of patented; spiral wound 22 gauge aluminized steel, 6.0" OD.
2.4.3 Elbows and tube coupler to be made of min. 18
gauge-aluminized steel, swaged at both ends so as to fit into 6.0" spiral tube.
2.4.4 Reflectors to be made of minimum 0.025 bright
aluminum.
2.4.5 Tubing and reflector hangers to be made of
0.25" Dia. Zinc plated CRS.
2.4.6 All tubing joints to be sealed and
mechanically fastened with self drilling and tapping screws in accordance with ANSI
Standard Z83.6 (current standard), paragraph 1.7, item 1.7.3.
2.4.7 All radiant tubing to be continuously covered
by the reflector , i.e. radiant tube elbows, "U' bends and fittings to be covered by
reflectors -- NO GAPS BETWEEN REFLECTORS. Reflectors are to be overlapped a minimum of
one-inch (1") and secured together with sheet metal screws allowing for one unsecured
overlap joint for expansion on each straight run exceeding ten feet (10').
2.4.8 Minimum length of radiant tubing per 100,000
Btu/hr of input shall be 40 lineal feet.
2.4.9 The maximum firing rate shall be 2000 Btu/hr
per square foot of radiant tubing surface area. The total radiant tubing surface area is
the radiant tubing which is covered by reflectors and associated with one vacuum
exhauster.
2.5 - COMBUSTION AIR
2.5.1 Outside combustion air (if
used) is to be provided without the use of supplementary supply blowers or fans.
2.5.2 Outside combustion air ducting to be minimum
of 6" OD (S&D PVC or galvanized stovepipe).
2.6 - SYSTEM PERFORMANCE
2.6.1 System shall attain a net
exhaust temperature of not less than 200°F in a 15 min. run cycle and shall not exceed a
maximum net temperature of 275°F.
2.6.2 System STEADY STATE EFFICIENCY shall be a
minimum of 82%, maximum 87%. The system cyclic efficiency shall be a minimum of 85%,
maximum 91% (this is based on a 15 min. run time).
2.6.3 System shall be a non-condensing dry tube
system. i.e. - After a minimum run time of 8 min. all condensation will cease and moisture
will exit the system in a vapor state.
PART 3 - EXECUTION
3.1 - INSTALLATION
3.1.1 Power
Requirements: It is the installers' responsibility to verify the correct power
requirements for the project.
3.1.2 Fuel Supply and
Distribution:
a) A suitably designed gas distribution system
shall be installed per shop drawings.
b) Each burner assembly shall be furnished with a stainless steel gas connector with
manual shut off valve.
3.1.3 Assembly: Assemble and install
the heating system in accordance with the installation manual and shop drawings.
3.1.4 Cleaning: Clean reflectors as may be required
and touch up painted surfaces as may be needed.
3.1.5 Testing: Upon completion of installation,
including work by other trades, adjust and test the heating system in accordance to the
manufacturer's owners manual. Adjust and re-test heating system until entire installation
is fully operable and acceptable.
END OF SECTION
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