threaded-eye rod hangers with lock nuts and heat-duct hangers, threaded-eye
bolts with expansion screws, brackets, platform and mounting frame, and
vibration isolators. Locate equipment in such a manner that working space
is available for servicing, such as vacuum pump and burner removal, access
to automatic controls, and lubrication. Provide electrical isolation of
dissimilar metals. Clean interior of casings or cabinets before and after
completion of installation.
3.1.2
Vents
NFPA 54 and NFPA 211. Provide vents with weatherproofing flashings in
accordance with Section 07600 FLASHING AND SHEET METAL.
3.1.3
Electrical Work
NFPA 70 and Division 16, "Electrical Work."
When replacing original
control wires, provide No. 16 AWG with minimum 105 degrees C insulation.
3.2
FIELD QUALITY CONTROL
Administer, schedule, and conduct specified tests. Furnish personnel,
instruments and equipment for such tests. Correct defects and repeat the
respective inspections and tests. Conduct inspections and testing in the
presence of the Contracting Officer.
3.2.1
Test Instruments and Apparatus
Provide instruments and apparatus currently certified as being accurate to
within one percent of their full scale. Use gages with a maximum scale
between 1 1/2 and 2 times test pressure.
3.2.2
Field Inspection
Prior to initial operation, inspect equipment installation to ensure that
indicated and specified requirements have been met.
3.2.3
Field Tests
3.2.3.1
Fuel Piping Pressure Tests
[Pneumatically test gas piping at 1 1/2 times operating pressure and check
for leakage with soap solution.] [Hydrostatically test fuel oil piping at
1 1/2 times maximum working pressure.]
3.2.3.2
Fire Tests for Nonelectrical Heating Equipment
Test combustion controls and equipment with specified fuel at 100 percent
full rated load. During tests, verify proper operation of controls. Adjust
burners for maximum efficiency using Orsat or similar apparatus. Maintain
firing for at least four hours [, and where high-low-off combustion
controls are provided, operate the heating equipment for one hour at low
fire and 3 hours at high fire]. For acceptable combustion efficiency,
allow maximum 4.5 percent carbon dioxide in flue gases.
3.2.3.3
Insulation-Resistance Tests for Electrical Equipment
At the completion of wiring, test 600 volt wiring to verify that no short
circuits exist before or after the attachment of electrical heating
equipment to the power source. Make tests with an instrument which applies
SECTION 15760N
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