19AS2025Q0031 Supply & Installation of two (2) Cooling Towers for Chillers

The U.S. Embassy in Canberra issued Request for Quotations (RFQ) number 19AS2025Q0031 for the supply and installation of two cooling towers for chillers. The solicitation, dated August 11, 2025, requires interested companies to submit quotations by September 11, 2025, at 5:00 PM AEST. A pre-quotation conference will be held on August 21, 2025, at 11:00 AM AEST at the Embassy site. Key requirements for submission include SF-1449, pricing details, representations and certifications, additional information from Section 3, and proof of SAM registration. The selected contractor will be responsible for the comprehensive removal, supply, and installation of two Baltimore or equivalent cooling towers, including design, engineering, procurement, testing, commissioning, and training. The project emphasizes adherence to health and safety regulations, a one-year warranty on equipment and workmanship, and compliance with various FAR and DOSAR clauses. Payments for foreign firms will be in Australian dollars, while U.S. firms can opt for U.S. dollars. The document outlines detailed work arrangements, responsibilities, and a Quality Assurance and Surveillance Plan.

The document outlines mechanical equipment specifications for a facility, detailing components such as two cooling towers with two variable speed drives (VSDs), four motorized control bypass valves (Valves 11, 12, 25, 26) for chilled water, and various pumps. Specifically, it lists two condenser water pumps (5.5 kW with two VSDs), two secondary chilled water pumps (30 kW), two primary chilled water pumps (4 kW with two VSDs), and two PAS building pumps (0.75 kW). This list is indicative of a procurement or design specification within a federal, state, or local government RFP, likely for a building's HVAC or water management system.

This document is a Cooling Tower Selection Report for a Baltimore Aircoil Company PCT Series cooling tower, model PCT0505-P3-I, in Australia, dated August 26, 2024. It details the design conditions, engineering specifications, and sound performance for a single unit. Key design parameters include a flow rate of 19.81 l/s, a heat rejection of 460 kW, and a fan motor power of 3.73 kW. The report provides physical dimensions, weights, and required clearances. Thermal performance is CTI certified. It also includes comprehensive sound pressure and power level data at various distances and frequencies, with a total A-weighted sound power of 94 dB. A material specification sheet outlines options for various components, emphasizing stainless steel and FRP construction for durability and compliance with standards like ASHRAE 90.1 and MEPS2-2006.

This amendment addresses questions regarding Solicitation Number 19AS2025Q0031 for the Supply & Installation of two (2) Cooling Towers for Chillers at the U.S. Embassy Canberra. The due date for offers is September 11, 2025, at 5:00 PM AEST. Key information includes the provision of chilled water system drawings and site photos as attachments. The new cooling towers and VSD/VFD must interface with the existing Carrier i-Vu BMS/BAS system using BACnet/IP or Modbus TCP/IP protocols, requiring unique network addresses and a dedicated connection for each fan. The specifications for the cooling towers are PCT0505-P3-I, with a flow rate of 19.81 L/s, hot water temp of 35 °C, cold water temp of 29.44 °C, and a heat rejection of 460 kW per tower. Installation requires motorized bypass valves, vibration isolators, condensate drains, electrical connections, and flexible connectors. The replacement process must be sequential, one tower at a time, to ensure continuous HVAC system operation and minimize impact.