TC 120
682.98767.00 • 10/04/2018
25
Heaters
The specially designed 9 kW three-phase electrical immersion heater heats the water,
and the controller regulates the temperature. The standard heater has an incoloy
sheath for best heat transfer.
Immersion heaters at 12 kW, 18 kW, or 24 kW are available options for these models,
depending upon the heating needs of the process. All models are built to provide full
or partial heat as required by the process and determined by the controller, providing
more precise temperature control.
Solenoid Valves
TC 120 temperature control systems use rugged, industrial design solenoids with
replaceable coils and/or internal components. Depending on required cooling
capacity, solenoid valves are available in sizes ranging from
1
/
4
” to
3
/
4
”;
1
/
2
” x
9
/
16
” and
3
/
4
” x
3
/
4
”.
Motorized Modulating Valves
Optional
Optional motorized modulating valves are recommended for large cooling applications where
the process temperature is very near the cooling water supply temperature. The gradual
shutoff they provide also eliminates water hammer. The option includes a complete valve and
motor package in place of a long-life solenoid valve.
The motorized modulating valve has infinite positioning.
Water Hammer Arrestor (Shock Stop)
Optional
Shock waves from fast-operating solenoid valves may damage some process systems. For
these applications, a welded metal bellows-type shock stop with a pre-charged and sealed
nitrogen blanket can be installed in the cooling piping.
Pump Starter
TC 120 temperature controller’s high quality IEC-rated pump motor starters are industrial
grade motor controls with overload and overcurrent protection with manual reset.
Transformer
High quality industrial design transformers are specified to suit incoming voltage on the
application and provide 115 VAC control voltage. The transformer is protected by primary
fusing with secondary grounding.
Heater Contactor
Your TCU unit uses high-quality IEC-rated industrial-grade electromechanical contactors for
heater controls.
Cooling
The controller automatically regulates cooling by opening and closing the solenoid valve or
modulating valve. For direct injection, the unit cools by removing the required amount of
warm water from the system. This process permits an equal amount of cool plant water to