Project Name
Project Number
UEPH Complex
Statement of Work
26 November 2001
constraints, a chiller may be assembled, leak-tested, charged, 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. Chiller shall be provided with factory installed insulation on
surfaces subject to sweating including the liquid cooler and water boxes. Chiller shall be
provided from the factory with a single point wiring connection for incoming power supply.
Magnetic across-the-line motor starters with overload protection shall be provided for each
factory supplied pump. Chiller shall include all customary auxiliaries deemed necessary by the
manufacturer for safe, controlled, automatic operation of the equipment. Evaporator, absorber,
condenser, generator(s), and heat exchanger(s) shall be of the shell-and-tube type construction
and be in accordance with ASME BPV VIII Div 1. Chiller shall be provided with a forced draft,
flame retention type burner and fuel train assembly. Burner shall be the [single] [dual] fuel type
capable of burning [natural gas] [propane] [and] [number 1 fuel oil] [number 2 fuel oil] [diesel].
Burner and fuel train shall be listed by the underwriters laboratories (UL). 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 control system interfaces.
10-9.4
Cooling towers. Each tower shall be the [induced] [forced] mechanical draft,
[crossflow] [or] [counterflow], factory fabricated, factory-assembled type. Towers shall conform
to NFPA 214. Fire hazard rating for plastic impregnated materials shall not exceed 25. Plastics
shall not drip or run during combustion. Determine ratings by ASTM E 84 or NFPA 255. Casing
shall be constructed Type 304 stainless steel or FRP. Basin shall be completely watertight and
constructed of Type 304 stainless steel or FRP. The fill shall be [PVC formed sheets arranged
in a honeycomb or waveform configuration] [or] [treated Douglas-fir, hemlock or redwood]. Fill
shall be removable or otherwise made accessible for cleaning. Provide space supports as
required to prevent sagging and misalignment, and provide for an even mixing of air and water.
Structural supports shall be provided in accordance with the recommendations of the
manufacturer of the tower unless otherwise indicated. Water distribution systems shall be
accessible and permit flexibility of operation. Systems shall be self-draining and nonclogging.
Provide drift eliminators in tower outlet to limit drift loss to not over 0.02 percent of specified
water flow. Fans shall be the [centrifugal] [or] [adjustable-pitch propeller] type, constructed of
Type 304 stainless steel, aluminum or an aluminum alloy, or FRP.
10-9.5
Closed circuit coolers. Casing shall be constructed of hot-dip galvanized steel with
fan section constructed of stainless steel. Coil and frame shall be steel and hot-dip galvanized
after fabrication. Access doors or panels suitably sized and located shall be provided for access
for cleaning, repair, or removal. Provide discharge damper controls to minimize heat loss during
reduced operation and electric heater in sump for freeze protection.
10-9.6
Evaporative condensers. Condenser shall be rated and tested in accordance with
requirements of ASHRAE 64. Condenser shall include fans, water pump with suction strainer,
electric motor and drive equipment, water eliminators if required, condensing coil, liquid receiver
if required, water pan or sump, spray nozzles or water-distribution pan, water strainer, water
make-up assembly, bleeder with flow valve of the needle valve type sized for the flow required
or a fixed orifice, enclosure with suitable access doors, and air-inlet and outlet openings. No
water shall carry over into the unit discharge outlet. Enclosure shall be constructed of [18 gauge
hot-dip galvanized steel] [aluminum], reinforced and braced. Access doors or panels suitably
SOW-140