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4A.2 Temperature Control for 8- and 10-Ton Process Chiller
Liebert 8- and 10-ton process chillers include a Sporlan Electronic Hot Gas Bypass Valve and con-
troller. This control provides a precise method of capacity control by bypassing hot gas to the
evaporator inlet. Figure 3B shows a schematic representation of this piping system.
Figure 3B Piping bypass to evaporator inlet
The system is factory-piped and wired. Figure 3C shows the connections to the control board.
Figure 3C Electronic hot gas bypass valve
Compressor
Condenser
SDR-4
TCB
Receiver
Catch-Aall
See-All
Solenoid
Valve
TEV
Distributor
External Equalizer
Evaporator
SDR-4
Fitting size available - 3/8" or 1-1/8 ODF
8.21
8.08
Maintenance 18C