3.0 INSTALLATION
FIGURE 3.8A:
COOLING TOWER WATER PIPING SCHEMATIC
Figure 3.8B shows the suggested wiring arrangement necessary to interconnect the unit, pump
and tower fan motor. The entire system starts and stops automatically.
Figure 3.8C shows an alternate wiring arrangement. Each unit is individually controlled by its
room thermostat. The unit control circuit is energized by the pump motor starter. Starting the
pump motor also starts the tower fan.
After the pump is started manually, it will continue to operate until the stop button is pushed.
This arrangement is suggested where there will be a long run of condenser water piping that
might be heated excessively during the off periods with automatic operation.
In each case, the wiring is such that there is water circulation through the condenser when units
are running.
FIGURE 3.8B: UNIT CONTROL ON
WATER FLOW
* 220VA available per unit for cooling tower pumps and fans
FIGURE 3.8C: ALTERNATE UNIT
CONTROL ON WATER
FLOW
* 220VA available per unit for cooling tower pumps and fans
