Chiller connection fittings are crucial for linking a chiller to a system, using various components#

Chiller pipe connections involve linking chilled water supply/return lines to the unit, requiring specific components like valves (isolation, non-return), flow meters, and strainers for control, filtration, and maintenance, using proper jointing (threaded/welded) and insulation, ensuring vibration isolation, and coordinating with electrical systems for seamless operation. Key steps include installing isolation valves, check valves (NRV), expansion joints, and strainers to protect equipment and allow servicing, always ensuring correct pipe flow direction and proper insulation. 

Key Components & Fittings

Isolation Valves: Butterfly or gate valves for shutting off flow for maintenance.

Check Valves (NRV): Prevents water backflow when pumps stop, protecting the pump.

Strainers: Filters debris from the water, mounted with flow direction arrows.

Expansion Joints/Loops: Accommodates thermal expansion and contraction.

Flow Meters: Measures water flow for efficiency monitoring.

Vibration Pads: Isolates chiller unit from the building structure. 

Connection Process

Preparation: Ensure pipe ends are clean, deburred, and properly threaded if needed.

Mounting: Use approved clamps to connect extension pipes to chiller nozzles, preventing stress.

Jointing: Apply approved joint compound for threaded joints, ensuring correct tightness; use appropriate welding practices for larger pipes.

Component Installation: Install strainers (arrow pointing towards chiller), valves, and meters as per design.

Insulation: Apply thermal insulation to all chilled water pipes, sealing gaps.

Testing: Release nitrogen, then pressure test the system for leaks. 

Best Practices

Support: Adequately support piping to avoid strain on chiller nozzles.

Flow Direction: Always orient components like strainers and valves according to flow direction.

Coordination: Work closely with electrical and BAS (Building Automation System) contractors.

Safety: Purge nitrogen before connecting to prevent injury.