- 1). Verify the actual loads designed or anticipated in the system to successfully pipe chillers in parallel configurations according to manufacturer specifications. This is determined by the designed temperature change needed in the water solution to effectively move the heat generated by the device or process and eject it out of the system via water-to-air or water-to-water condensers.
- 2). Size the piping according to chiller manufacturer specifications so it provides adequate water flow to effectively move the heat from the device or process back to the chillier for ejection from the system. The rate of flow should be equal to or higher than the chiller manufacturer design specifications.
- 3). Determine the pressure drop in the piping header on the inlet and outlet of the chillers according to manufacturer specifications to ensure a balanced water flow to each of the parallel chillers. They must have the same pressure drop to aid in making sure the flow is equal through each of the chillers. It makes no difference if there are two chillers or many; the overall system flow must be adequate to support the specifications of all the chillers in the system.
- 4). Install balancing valves in the headers to regulate the water flow through each of the chillers according to manufacturer specifications. The flow can be determined by calculating the water temperature drop or by installing ports for a flow meter. A common flow meter used is the Taco meter designed by the Taco pump company.
- 5). Lay piping according to manufacturer instructions once the chillers are in position and the design has been verified. Once completed and the system is filled with water, the flow can be verified and the controls for the chillers can be tested. Using the Taco flow meter (with pumps running) connect the hoses to the manufacturer-specified ports across the orifice in the flow tap module. When the flow has been determined to be correct, the chillers are ready for service.
- Advertisement -
- Advertisement -