Fig. 52 — Chiller Control Schematic
1C
—
Refrigerant Pump Contactor
2C
—
Liquid Bypass Valve Contactor (Option)
3C
—
Economizer Vent Valve Contactor (Option)
4C
—
Free Cooling Valve Contactor (Option)
1CB
—
Control Power Circuit Breaker
2CB
—
Control Power Circuit Breaker
1TB
—
L1, L2, L3 – Main 3-Phase Power
1TB
—
LL2, LL1 – 1-Phase Control Power
2TB
—
Control Power Wiring Terminal Block
3TB
—
24 VAC Control Power Wiring Terminal Block
4TB
—
VFD Communication and Interlock
5TB
—
Customer Field Connection Terminal Block
ETHERNET SWITCH
—
Remote Connectivity Ethernet Connection
HFR
—
High Float Level Switch Relay
HPR
—
High Pressure Switch Relay
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