Chilled Water Piping Connections
Process Pump Discharge (Single Well). Connect process pump discharge to the chiller evaporator water inlet. Size to the chilled water flow rate. Chiller evaporator inlet and outlet should have valves and temperature and pressure gauges. Outlet of the evaporator is connected to the chilled process water supply.
Process Pump Discharge (Dual Well). Connect directly to the chilled water process supply. Size according to process flow requirements.
Return (Single Well). Connect the chilled water returning from the process to the pump tank threaded return inlet. Size this line according to the chilled water flow rate.
Makeup. Connect a 1” (approximately 25 mm) water line from a city water source to the makeup inlet to maintain the water level in the pump tank.
Overflow. Connect the overflow outlet to an approved, trapped drain to permit excess water in the pump tank to overflow to the drain. Size the overflow line according to the size of the pump tank. (Consult specifications on page 23.) Do not connect to draw if glycol is used in the system.
To Drain. Connect to a 2” (approximately 51 mm) line leading to an approved, trapped drain. Do not connect to draw if glycol is used in the system.
Bypass (Single Well). Optional: recommended on single pump systems. Pipe full size to the
3-8 Initial Start-up
•Remove all tools, foreign matter and debris from the pump tank reservoir and piping.
•Complete all piping leading to and from the pump tank. Observe all applicable codes.
•Complete all electrical wiring. Observe all applicable codes.
•Prepare all related equipment in the system for operation.
•Leak check piping. Flush and clean system.
Pump Tanks | Chapter 3: Installation | 15 of 36 |
