Typical Piping — Redundant Chillers
CHILLER 1 | CHILLER 2 |
CRACs
Components inside dashed lines are included with the chillers and CRACs. All other items (valves, piping, etc.) are
Note
| Storage tank — optional* | | Expansion tank**** |
| Isolation valves | | Heat exchanger |
| Flex connections | | Pressure gauges/petcocks |
| Check valves | | Air vent connection port |
| Chilled water temperature sensor** | | Dual pump |
| | Electric heater | |
| Pressure reducing/fill valve | | Balance valve/drain plug |
| Air separator and vent*** | | Flow switch |
*To provide the coldest possible water to the load, install the optional storage tank on the leaving side of the chiller
**Chilled water temperature sensor should be wired to both chillers.
***Install at the highest point in the system.
****When applied in redundant chillers, disconnect the expansion tank and install a single expansion tank in the common header.
4 | Supplemental Installation Information for APC Chillers |
