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radiators, hot water pipes, etc. Any lengths of tubing that are exposed to high ambient temperatures should be
insulated to prevent condensation and/or significant liquid heat loss.
After ensuring that the system is free from the obstruction, that all valves are open, and the reservoir when avail-
able is full, push the CONTROL POWER switch to the “ON” position. The pump should now be operating.

Process Water Flow, Units Without Reservoir (Optional)

Follow standard plumbing practices and local codes in making water connections. The Chiller inlet and outlet
connections are 3/4”. Flexible hose and fittings are recommended for plumbing the system. A No. 20 mesh
strainer should be installed on the Chiller inlet to prevent foreign particles from entering the system and should
be cleaned monthly. Lines should be routed with as few bends as possible. Prevent lines from running near
radiators, hot water pipes, etc. Any lengths of tubing that are exposed to high ambient temperatures should be
insulated to prevent condensation and/or significant water heat loss.
Proper priming of the water lines is essential to prevent pump cavitation. Be certain all air has been purged from
the lines before operating the pump for an extended period of time. Be sure to remove any loops in the lines that
may trap air. The pump must have a supply of water with the level of the water above the inlet of the Chiller.
The supply tank must feed the Chiller from the side of the tank below the water level (see Figure 2).
FIGURE 2. EXTERNAL RESERVOIR WATER LEVEL
WATER
LEVEL
WATER
LEVEL
WATER
LEVEL
WATER
LEVEL
CHILLER
INLET
LINE
CHILLER
INLET
LINE
CHILLER
INLET
LINE
CHILLER
INLET
LINE
CHILLER
W/O TANK
CHILLER
W/O TANK
CHILLER
W/O TANK
CHILLER
W/O TANK
EXTERNAL
RESERVOIR
EXTERNAL
RESERVOIR
EXTERNAL
RESERVOIR
EXTERNAL
RESERVOIR
WATER LEVEL IS
BELOW CHILLER INLET AIR CAN BE TRAPPED IN
CHILLER INLET WATER FEEDING FROM
TOP OF TANK
CORRECTINCORRECT INCORRECT INCORRECTTHERMOSTAT ADJUSTMENT

Standard Thermostat

The following procedure should be followed to adjust the standard thermostat: