TC110 Series
Water Temperature Control Units 882.03888.00
•
09/19/2018
19
3-8
Making Cooling Water Connections
Water In — ¾”
The cooling water supply inlet from a cooling tower, a chiller, or a city water supply.
If a non-relieving device such as a regulator, ball valve,
or check valve is installed on the WATER IN line,
you MUST install an expansion tank
of at least ½ gallon (about 2 liters) capacity.
Failure to do so can result in system overpressure from thermal expansion.
Install the tank configured as shown below:
Check the expansion tank frequently to make sure it is not flooded.
Water Out
Size Depends on Solenoid Valve Used
The cooling water outlet leading back to the cooling tower, chiller, or drain.
Net supply pressure should be between 25 psig and 55 psig (172 kPa/1.7 bar and 379
kPa/3.8 bar). Net supply below 15 psig (103 kPa/1.10 bar) may allow water to flash to
steam, cavitate the impeller, and damage the pump, which prevents the unit from cooling
properly. Operation above 55 psig (379 kPa/3.8 bar) may cause premature opening of the
relief valve from pump pressure and pressure surges.
Pressure Relief — ¾”
The pressure relief valve, located at the back of the unit.
