Complete Compiled Specification.pdf - Peck Ormsby Construction

Mode of Operation
Boiler shall include integral factory wired operating controls to control all operation and energy input of the boiler.
The controller shall have the ability to vary boiler input throughout its full range to maximize the condensing
capability of the boiler without header temperature swings.
The boiler will operate to vary header temperature setpoint linearly as an externally applied 4-20 ma signal is
supplied. Unit shall operate with an Inverse Efficiency Curve, with known Part Load Value Efficiencies.
Maximum efficiency shall be achieved at minimum firing input. Main Header outlet temperature shall not be
more than +/-2F from setpoint at any point of operation. The boiler shall have LCD display for monitoring of all
sensors and interlocks.
Warranty
The pressure vessel of boiler shall carry an unconditional, non-prorated 10 year warranty against leakage due to
defective materials or workmanship. The heat exchanger tubes/combustion chamber assembly shall be
warranted against failure due to thermal stress failure or condensate corrosion for a prorated five year period. A
Warranty Certificate must be issued to the owner from the manufacturer and a copy of warranty be submitted for
engineers approval.
Field Services
Contractor shall provide the services of a local factory authorized representative to supervise all phases of
equipment startup. A letter of compliance with all factory recommendations and installation instructions shall be
submitted to the engineer with operation and maintenance instructions.
Boiler shall be Aerco or Fulton
AIR COOLED CHILLER:
SYSTEM DESCRIPTION
Microprocessor controlled, air-cooled liquid chiller utilizing scroll compressors, low sound fans
QUALITY ASSURANCE
A. Unit shall be rated in accordance with ARI Standard 550/590, latest revision (U.S.A.).
B. Unit construction shall comply with ASHRAE 15 Safety Code, UL 1995, and ASME applicable codes
(U.S.A. codes).
C. Unit shall be manufactured in a facility registered to ISO 9001:2000 Manufacturing Quality Standard.
D. Unit shall be full load run tested at the factory.
DELIVERY, STORAGE AND HANDLING
A. Unit shall be stored and handled per unit manufacturer's recommendations.
EQUIPMENT
A. General:
Factory assembled, single-piece or factory-matched duplex chassis, air-cooled liquid chiller.
Contained within the unit cabinet shall be all factory wiring, piping, controls and refrigerant charge.
B. Unit Cabinet:
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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION March 2, 2009
HEATING-COOLING 15700-2