Amen03 HP476 Pump Schedule -1.pdf

This document is a Statement of Work or Performance Work Statement detailing HVAC chiller system requirements and modifications.

The contractor must provide chiller compound enlargement and equipment pad construction. The primary deliverable is procurement and installation of a new chiller system with modifications to existing piping infrastructure. The chiller specifications include: minimum capacity of 112 tons at 54°F entering water temperature and 40°F leaving water temperature, with 192 gallons per minute flow rate at 95°F entering air temperature, maximum 7-foot water pressure drop, and 460-volt, 3-phase, 60-hertz electrical service. The chiller must achieve a minimum adjusted efficiency of 0.98 kilowatts per ton, calculated through a weighted formula across multiple operating capacities (100%, 85%, 65%, and 35%), with efficiency inclusive of condenser fan energy consumption.

The contractor must also reuse the existing chilled water pump, performing testing, adjustment, and balancing to achieve 575 gallons per minute flow at 107 feet of discharge head. Following system balance completion, the impeller must be trimmed to match actual operating conditions plus 10 percent discharge pressure margin. The existing pump is an Armstrong Model 3/4/10, 4600-series unit operating at 3485 revolutions per minute.