Compact Recirculating Chillers

KT Chiller Range

Applied Thermal Control KT recirculating chillers were originally designed as laboratory coolers, they are compact with a small footprint but robust in design. The chillers are vented on all faces and located on casters to allow for flexible use, including being effortlessly situated either on or beneath benches.

ATC KT chillers are designed and manufactured to our customers’ requirements, they are created for use with applications in laboratory, research, and manufacturing processes. Quiet and reliable in use the range of chillers provide accurate temperature control to 0.1°C precision with a choice of recirculating chillers, water-to-water heat exchangers, and air blast coolers.

With a tough design supporting research and applications that are in constant use, ATC chillers offer great reliability with up to 51100 BTU (15kW) cooling capacity. Available as UL-CSA compliant via ETL Mark option on both indoor and outdoor chillers. We have over 20 years’ experience supplying chillers from 1600 BTU (480W) through to 51100 BTU (15kW) cooling capacity. With the expertise of supplying internationally we work alongside a vast range of original equipment manufacturers and end users, offering specialist tailored advice and solutions to your cooling requirements. This is supported by a friendly efficient UK team who are on hand to assist with any technical queries and a professional network of global distributors and service agents.

Supporting our international customers, ATC chillers a have a variable power supply, allowing for easy change of voltage or frequency supply from one region to another at a flick of a switch. This is backed by an extensive network of trusted partners and skilled service agents to support our global customers.

You can protect your equipment and add a service contract to support your chiller in use. We understand the need to keep an application running and that it is not always possible to return a chiller to base for assessment and repair. We have a team of UK based factory trained emergency call out engineers who can assess and if possible fix machines on site.

The range of ATC chillers provide precision temperature control and are available with many standard options and optional accessories suitable for use within scientific and industrial applications. Each chiller is specifically designed and manufactured to suit each customers requirement. We have experience in working with food manufacturers, cosmetics producers, scientific instrument support markets (electron microscopes, X-ray diffraction, ICPMS etc.), semiconductor process, breweries, ophthalmic lens manufacturing equipment, induction heating, and more recently the chillers of choice for commercial digital printing and laser lithography markets worldwide.

KTR Chiller

A user friendly and reliable chiller unit with 1600 BTU (480W) cooling capacity. An economic purchase, ideal for OEM applications. ·

1600 BTU (480W) Cooling capacity (at 17⁰C set point)
Simple plug in and use unit ·
Ultra compact design
Economic purchase and in operation
Easy filling from the top with simple cap
Large bright LED display
Standalone filling level indicator, easy to access and change
Splash proof keypad with integrated mains switch
Reliable microprocessor PID temperature control
Vents are located on all faces for flexible installation
Pressure gauge Internal by pass valve to adjust pump pressure, as standard
Permissible temperature in return line +70⁰C
Alarm output, potential free change over contact (maximum 30 VA)
Low liquid level protection with optical and audible alarm signal

KTC Chiller

A robust and compact recirculating chiller offering a 1600 BTU (480W) cooling capacity, displaying high and low temperature alarms.

Digital temperature display
1600 BTU (480W) cooling capacity (at 17⁰C set point)
Factory set temperature
Adjustable temperature alarms
Easy filling from the top with simple cap
Chillers are built to specification/order
All units can be customized to fit specific application
Designed for laboratory, but with a robust steel enclosure so can be deployed in almost any environment
Simple operation and an ergonomic design
Large bright LED display
Standalone filling level indicator, easy to access and change
Splash proof keypad with integrated mains switch
Reliable microprocessor PID temperature control
Vents are located on all faces for flexible installation
Pressure gauge Internal by pass valve to adjust pump pressure, as standard
Permissible temperature in return line +70⁰C
Alarm output, potential free change over contact (maximum 30 VA)
Low liquid level protection with optical and audible alarm signal
Chillers are built to specification/order
All units can be customized to fit specific application

KTD Chiller

The KTD chiller is a self-contained unit for precision chilling offering 1600 BTU (480W) cooling capacity, with full temperature control and display. ·

Ultra-compact design
1600 BTU (480W) cooling capacity (at 17⁰C set point)
Versatile temperature control and alarm
Easy filling from the top with simple cap
Simple operation and an ergonomic design
Large bright LED display
Standalone filling level indicator, easy to access and change
Splash proof keypad with integrated mains switch
Reliable microprocessor PID temperature control
Vents are located on all faces for flexible installation
Pressure gauge Internal by pass valve to adjust pump pressure, as standard
Permissible temperature in return line +70⁰C
Alarm output, potential free change over contact (maximum 30 VA)
Low liquid level protection with optical and audible alarm signal

KT1 Chiller

The neat KT1 chiller takes the cooling capacity up to 3400 BTU (1000W) with full control of temperature stability to +/-0.1°C.

3400 BTU (1000W) cooling capacity (at 20⁰C set point)
Full temperature control
Versatile flow rates and pressures
Easy filling from the top with simple cap
Simple operation and an ergonomic design
Large bright LED display
Standalone filling level indicator, easy to access and change
Splash proof keypad with integrated mains switch
Reliable microprocessor PID temperature control
Vents are located on all faces for flexible installation
Pressure gauge Internal by pass valve to adjust pump pressure, as standard
Permissible temperature in return line +70⁰C
Alarm output, potential free change over contact (maximum 30 VA)
Low liquid level protection with optical and audible alarm signal

Instruction Manuals


KT Chiller Instruction Manual	Download PDF
KT1 Chiller Instruction Manual	Download PDF

Download the full spec sheet here


Cooling capacity (setpoint 20°C, ambient 20°C)	KTR/1600 BTU (480W)	KTC/1600 BTU (480W)	KTD/1600 BTU (480W)	KT1/3400 BTU (1000W)
Physical attributes
Physical dimensions (LxWxH) (mm)	330x315x515	330x315x515	330x315x515	370x450x540
Weight (kg)	30	30	30	55
Noise level (dB(A))	55	55	55	58
Toolless access	No	No	No	No

Temperature control attributes
Technology	Vapour Compression	Vapour Compression	Vapour Compression	Vapour Compression
Temperature range (standard)	Ambient dependant	Ambient dependant	+4°C to +35°C	+4°C to +35°C
Control method	Ambient tracking	Ambient tracking	Ambient tracking or PID	PID
Temperature stability (with constant load)	±0.2°C	±0.2°C	±0.1°C	±0.1°C
Temperature resolution	0.1°C	0.1°C	0.1°C	0.1°C

Water circuit attributes
System volume (L)	1.5	1.5	1.5	2
Pump type	1) 2L/min Rotary vane (PD)	1) 2L/min Rotary vane (PD)	1) 2L/min Rotary vane (PD)	1) 5L/min Rotary vane (PD)
	2) 3L/min Rotary vane (PD)	2) 3L/min Rotary vane (PD)	2) 3L/min Rotary vane (PD)	2) 10L/min Rotary vane (PD)
	3) 6L/min Rotary vane (PD)	3) 6/min Rotary vane (PD)	3) 6/min Rotary vane (PD)	3) 17/min Rotary vane (PD)
Pump capability	1) 6bar@2L/min	1) 6bar@2L/min	1) 6bar@2L/min	1) 6bar@5L/min
	2) 6bar@3L/min	2) 6bar@3L/min	2) 6bar@3L/min	2) 6bar@10L/min
	3) 1bar@1L/min, 0.33bar@4L/min	3) 1bar@1L/min, 0.33bar@4L/min	3) 1bar@1L/min, 0.33bar@4L/min	3) 1bar@1L/min, 0.33bar@4L/min
Pressure control (settable pressure relief valve)	Internal, *not on centrifugal pump	Internal, *not on centrifugal pump	Internal, *not on centrifugal pump	Internal, PRV, 20-150psi
Standard fittings	1/2" Female + 3/4 Male	1/2" Female + 3/4 Male	1/2" Female + 3/4" Male	1/2" Female + 3/4 Male
	w/ 1/4" male thread to 10mm barb	w/ 1/4" male thread to 10mm barb	w/ 1/4" male thread to 10mm barb	3/8" + 1/2" hose barbs
Standard chemical compatibility	Hexid Fluid, Water, Propylene Glycol	Hexid Fluid, Water, Propylene Glycol	Hexid Fluid, Water, Propylene Glycol	Hexid Fluid, Water, Propylene Glycol

Electrical attributes
Option 1	1Ø, 115V, 60Hz, 4.5A	1Ø, 115V, 60Hz, 4.5A	1Ø, 115V, 60Hz, 4.5A	1Ø, 115V, 60Hz, 10A
Option 2	Ø, 230V, 50Hz, 2.5A	Ø, 230V, 50Hz, 2.5A	Ø, 230V, 50Hz, 2.5A	1Ø, 230V, 50Hz, 7A
Option 3	Switchable (see below)	Switchable (see below)	Switchable (see below)	Switchable (see below)
Option 4
Option 5
Switchable configuration 1Ø, 115V/60Hz, 220V/60Hz, 230V/50Hz	Yes	Yes	Yes	Yes
Switchable configuration 1Ø, 208V/60Hz, 220V/60Hz, 230V/50Hz	Yes	Yes	Yes	Yes

Safety and fault indicator
Over-current restart mode	Manual	Manual	Manual	Manual
Empty fluid reservoir alarm	N/A	Visual, lamp	Visual and audible	Visual, lamp
Low fluid flow alarm	N/A	N/A	N/A	Visual, lamp
Temperature out of range alarm	N/A	Visual, lamp	Visual and audible	Visual, lamp
Compressor HP switch	Standard	Standard	Standard	Standard
Motor thermal overload	Standard	Standard	Standard	Standard
Emergency off	Standard, via MCB	Standard, via MCB	Standard, via MCB	Standard, via Fuse
Warranty options	2 year parts, 1 year labour	2 year parts, 1 year labour	2 year parts, 1 year labour	2 year parts, 1 year labour
	Enhanced warranty options	Enhanced warranty options	Enhanced warranty options	Enhanced warranty options

Options available
Remote alarm/power-off; SA00001	N/A	N/A	N/A	N/A
Low temperature pack; SA00002	N/A	N/A	Available, to -20°C	Available, to -20°C
High temperature pack; SA00003	N/A	N/A	Available, to +80°C	Available, to +80°C
Water cooled KT; SA00004	Available	Available	Available	N/A
Water cooled K1; SA00005	N/A	N/A	N/A	N/A
Water cooled K4/K6/K9/K12; SA00006	N/A	N/A	N/A	N/A
Water cooled K3 SA00007	N/A	N/A	N/A	N/A
Non-return solenoid pack; SA00008	Available	Available	Available	Available
Low flow alarm (KT); SA00010	Available	Available	Available	Standard
Onboard RS485 data protocol; SA00011	N/A	N/A	Available	Available
In-line Deionising cartridge and fittings; SA00013	Available	Available	Available	Available
Castors to replace rubber feet; SA00015	Available	Available	Available	Standard
CPC quick release connectors; SA00016	Available	Available	Available	Available
Installation kit; SA00017	Available	Available	Available	Available
UL approved version	Available	Available	Available	Available
DI water compatible	Available	Available	Available	Available
High ambient pack	N/A	N/A	N/A	N/A
Outdoor pack	N/A	N/A	N/A	N/A
Shelter pack	Available	Available	Available	Available
Service contract	Available	Available	Available	Available
Filter on outlet/inlet	Available	Available	Available	Available
Flow meter pack SA……..	N/A	N/A	N/A	N/A
Stainless enclosure	Available	Available	Available	Available

Please contact us for further details on this chiller range.

Low Temperature Pack

This low temperature option can be fitted to allow a chiller to be operated below +4°C and to be controlled down to -15°C.

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Heater Pack

The normal upper limit of the process temperature is 35°C. It is possible to raise this up to 65°C by means of a heater pack (higher temperatures can be achieved, following discussion with an ATC salesperson). Heater packs are typically installed into chiller systems where it is necessary to maintain a specific temperature range, and the cooling capacity of the chiller alone is not sufficient to achieve the desired range.

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Water-Cooled Condensers

Water-cooled condensers are commonly used in chillers to remove heat from the refrigerant and transfer it into a primary cooling circuit. In a recirculating chiller system, the refrigerant absorbs heat from the process or space, and transfers it to the water-cooled condenser.

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Non Return / Solenoid Valve

The non-return/solenoid option can be fitted to prevent back siphoning of fluid into the chiller during maintenance.

They are recommended when the chiller and application are at different levels (more than 2 metres height difference), or where a long length of flexible tubing is used between the chiller and the application. It is also advisable to add non-return/solenoid valves in situations where pipe-runs will be going up into ceiling ducts.

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