Project Name
Project Number
UEPH Complex
Statement of Work
26 November 2001
10-9.1
Packaged air cooled liquid chillers. Units shall be assembled, leak-tested, charged
(refrigerant and oil), and adjusted at the factory. Chiller shall be provided with factory installed
insulation on surfaces subject to sweating including the liquid cooler, suction line piping,
economizer, and cooling lines. Chiller shall include all customary auxiliaries deemed necessary
by the manufacturer for safe, controlled, automatic operation of the equipment. Chiller shall be
provided with a single point wiring connection for incoming power supply. Factory installed
insulation shall be provided on all suction piping from the evaporator to the compressor and on
the liquid cooler shell. Where motors are the gas-cooled type, factory installed insulation shall
be provided on the cold-gas inlet connection to the motor per manufacturer's standard practice.
Compressors shall be scroll, reciprocating, rotary screw or centrifugal type. Scroll and
reciprocating chillers shall be constructed and rated in accordance with ARI 590. Rotary screw
chillers shall be constructed and rated in accordance with ARI 550 or ARI 590 as applicable.
Centrifugal chillers shall be constructed and rated in accordance with ARI 550. Chiller shall
conform to ASHRAE 15. Refrigerants shall be one of the fluorocarbon gases. Refrigerants shall
have number designations and safety classifications in accordance with ASHRAE 34.
Refrigerants shall meet the requirements of ARI 700 as a minimum. Refrigerants shall have an
Ozone Depletion Potential (ODP) of less than or equal to 0.05. Chiller shall be provided with a
complete factory mounted and prewired [electric] [microprocessor based control system].
Controls package shall contain as a minimum a digital display or acceptable gauges, an on-
auto-off switch, motor starters, power wiring, control wiring, and disconnect switches. Controls
package shall provide operating controls, monitoring capabilities, programmable setpoints,
safety controls, and EMCS interfaces.
10-9.2
Water cooled liquid chillers. Total chiller system shall be constructed and rated in
accordance with ARI 590. Individual chiller components shall be constructed and rated in
accordance with the applicable ARI standards. Chiller shall be assembled, leak-tested, charged
(refrigerant and oil), and adjusted at the job site by a factory representative. Unit components
delivered separately shall be sealed and charged with a nitrogen holding charge. Unit assembly
shall be completed in strict accordance with manufacturer's recommendations. Chiller shall
operate within capacity range and speed recommended by the manufacturer. Parts weighing
50 pounds or more which must be removed for inspection, cleaning, or repair, shall have lifting
eyes or lugs. Chiller components (excluding field installed refrigerant piping) shall be provided
with factory installed insulation on surfaces subject to sweating. Chiller shall include all
customary auxiliaries deemed necessary by the manufacturer for safe, controlled, automatic
operation of the equipment. Refrigerants shall be one of the fluorocarbon gases. Refrigerants
shall have number designations and safety classifications in accordance with ASHRAE 34.
Refrigerants shall meet the requirements of ARI 700 as a minimum. Refrigerants shall have an
Ozone Depletion Potential (ODP) of less than or equal to 0.05. Chiller shall be provided with a
complete factory mounted and prewired [electric] [microprocessor based control system].
Controls package shall contain as a minimum a digital display or acceptable gauges, an on-
auto-off switch, motor starters, power wiring, control wiring, and disconnect switches. Controls
package shall provide operating controls, monitoring capabilities, programmable setpoints,
safety controls, and EMCS interfaces.
10-9.3
Absorption Liquid Chiller. Chiller shall be constructed and rated in accordance with
ARI 560 and shall bear the appropriate underwriter's laboratories (UL) label. Chiller shall be the
[single-stage] [two-stage] hermetic, water-cooled type design. Chiller shall be [indirectly-fired
with [steam] [hot water]] [directly-fired with a [single] [dual] fuel burner]. [For direct-fired units,
ratings for cooling capacity, fuel consumption, and COP shall be based on the higher heating
value (HHV) or the specific type of fuel utilized.] Unless necessary for delivery purposes, chiller
shall be assembled, leak-tested, charged, and adjusted at the factory. In lieu of delivery
SOW-139
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