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Water/Glycol Cooling

EMP’s unique TK (Thermal Kit) water/glycol cooling systems are compact, single or multi-fan, systems that provide heat rejection ranging from 90,000 to 290,000 btu/h. Each system is ideal as a primary cooling unit for various types of small equipment, a supplemental cooler on larger vehicles, or even power electronics cooling on hybrid and electric vehicles.

TK systems also include our brushless electric fans and feature uTMC system controllers developed in-house. Models are available in both 12 and 24 volts, and pusher or puller configurations. Control strategy can be configured as temperature control, CAN/J1939, PWM, or On/Off. UL and CSA approved versions are available.

EMP Brushless Electric Fan

All of our TK series coolers feature EMP fans. EMP’s fans are brushless, controllable, reversible, and built from a cast aluminum shroud that can withstand even the harshest environments.

Fans on temperature controlled TK models are speed controlled by the system controller based on fluid temperature feedback. This allows for optimal thermal management and little fluid temperature variation, while also helping to prevent heat exchanger clogging in dirty environments. Fan speed on PWM and J1939 CAN controlled models can be configured by the customer.

Temperature controlled TK coolers include an EMP CM20 controller, while the on/off, CAN, and PWM controlled versions feature a C20 controller or an integrated fan controller. The controller receives input from sensors or the vehicle to determine precise cooling demand, and drives the fan accordingly. CM20 and C20 controllers also provide full diagnostic capability.

Heat exchangers on TK coolers are of bar/plate construction and fabricated from an aluminum alloy that has been proven through stringent testing to be superior to copper-brass construction in durability and efficiency, while also weighing less.

Temperature controlled TK models contain an integrated wiring harness assembly that will not break down or degrade when exposed to petroleum based fluids and glycol. The harness is built using connectors and interface terminals that are IP69k rated waterproof and dustproof.

The fan(s) on TK coolers can be reversed periodically as a part of routine vehicle maintenance. This helps keep the heat exchanger cooling fins free of debris and functioning properly. Fan reverse can be controlled by a CAN/J1939 command, as a timed event, or by ignition on.

Fans on temperature controlled TK coolers are speed controlled by the CM20 controller based on coolant temperature feedback. This allows for optimal thermal management and little fluid temperature variation, while also helping to prevent heat exchanger clogging in dirty environments. Fan speed on PWM and CAN controlled models can be configured by the customer.

TK coolers come in both 12 and 24-volt versions to allow for easy installation on most vehicles by eliminating the need for an auxiliary power circuit. Units are also available in both pusher and puller configurations to maximize mounting location adaptability. Control strategy and fan speed can be configured as variable-speed temperature control, custom-speed PWM or CAN control, or single-speed on/off. A WP29 water pump and/or 2-quart degas bottle are available as optional accessories.

Any engine power used for cooling is directly subtracted from the horsepower available for driving the wheels, hydraulics, PTOs, etc. TK electric coolers manage coolant temperature while consuming much less power than a system cooled by a belt-driven fan or hydraulic fan.

Temperature controlled TK coolers receive coolant temperature feedback from a thermistor sensor and drive the fans as necessary to maintain an optimal coolant temperature. This eliminates overheating and overcooling due to changes in ambient temperature and cooling demand.

EMP-Link and J1939 CAN versions allow two-way communication to support diagnostics. J1939 CAN communications support J1939 messages defined for Secondary OBD Devices.

TK can be controlled through the following communication protocols: On-Off, J1939 CAN, PWM , EMP-Link (Proprietary LIN), and Temp Sensor. EMP-Link and J1939 CAN versions allow two-way communication to support diagnostics. J1939 CAN communications support J1939 messages defined for Secondary OBD Devices. PWM version provides tach-out feedback (RPM).

Specifications - Various TK Examples
TypeTK1TK3TK4
Maximum Heat Rejection Rate90,000 Btu/h200,000 Btu/h (12V)
240,000 Btu/h (24V)
200,000 Btu/h (14V)
240,000 Btu/h (28V)
Overall Package Weight16 lbs100 lbs105 lbs
Heat Exchanger MaterialAluminumAluminumAluminum
Shroud MaterialAluminumSteelSteel
Maximum Continuous Operating Termperature203° F203° F203° F
Minimum Continuous Operating Termperature-40° F-40° F-40° F
Maximum Coolant Temperature257° F230° F230° F
Fan ConfigurationPush or PullPush or PullPush or Pull
Voltage12V
24V
12V
24V
12V
24V
Maximum Current25 Amps75 Amps100 Amps
Maximum Power0.47 hp (12V)
0.94 hp (24V)
1.41 hp (12V)
2.82 hp (24V)
1.88 hp (12V)
3.76 hp (24V)
Maximum Fan Speed4000 RPM (12V)
5000 RPM (24V)
4000 RPM (12V)
5000 RPM (24V)
4000 RPM (12V)
5000 RPM (24V)
Maximum Operating Pressure25 psi20 psi20 psi
Supply and Return Hose Inner Diameter1 in1 in1 in
Optional Degas Hose Inner Diameter1/4 in
Maximum Coolant Flow Rate50 gpm100 gpm100 gpm
Coolant Capacity1.5 Qt4.3 gal4.3 gal
Control InputsOn/Off
CAN/J1939
PWM
Thermistor
On/Off
CAN/J1939
PWM
Thermistor
On/Off
CAN/J1939
PWM
Thermistor
Degas Bottle Optional Capacity2 Qt
Fan reversal ControlPush button
Timed
Ignition On
Push button
Timed
Ignition On
Push button
Timed
Ignition On
TK3 Performance
Water/Glycol Cooling TK3 Performance Diagram
TK4 Performance
Water/Glycol Cooling TK4 Performance Diagram
TK1 Schematic
Water/Glycol Cooling TK1 Schematic Diagram
TK1 Alternative Schematic
Water/Glycol Cooling TK1 Alternative Schematic Diagram
TK3 and TK4 Schematic
Water/Glycol Cooling TK3 and TK4 Schematic Diagram