Industrial Water Cooled Chillers 5 – 50kW


  • Description
  • Technical Data
  • Pump performance
  • Options
  • About Thermex Solution


Thermex chillers are designed supply chilled water to heat developing processes. The unit are manufactured in Australia to suit local conditions and give our customer the solutions they need

Thy can be installed indoors or outdoors and can be configured to supply chilled water for

  • Potable water applications
  • Process cooling from an internal buffer tank
  • Process cooling to an external buffer tank


The chillers are supplied with – as standard

  • An internal buffer tank to protect the compressor from excessive start, close temperature tolerance, reduces thermal spikes and allows for vented design with no need for hydronics kit
  • Suitable for indoor or outdoor installation
  • Rugged galvanized steel construction
  • Components sourced from the industry’s leading suppliers
  • R407c refrigerant for efficient operation and one of the lowest GWP of all contemporary refrigerants
  • Integrated circulation pump
  • Comprehensive 12 months warranty on all parts and labour
  • Highly accurate electronic controller
  • 316SS plate heat exchanger evaporator
  • Comprehensive factory testing before dispatch
  • Evaporator protection on all models

Chiller Application

Industrial process chillers are designed to circulate water to a heat producing process via a water pump. The water brings the heat back to the chiller where the compression cycle cools the water before it is returned to the heat process.

Water cooled chiller generally rely on a cooling tower for heat rejection and are supplied with a shell and tube condenser

Technical Data

Technical Data

Model TC05W3 TC10W3 TC12W3 TC13W3 TC14W3
System type Chiller Heat rejection Water
Capacity 10C Supply Cooling tower water 29.5/35C kW 5.1 9.0 12.0 13.2 14.6
Total power input kW 1.85 2.57 3.24 3.49 3.73
Heat rejection kW 6.95 11.6 15.25 16.7 18.3
Total running current Amps 5.5 6.9 8.3 7.8 9.0
Motor size HP 1.8 3 4 4.5 5
Chilled water flow rate l/s 0.3 0.5 0.6 0.7 0.7
Cooling tower flow rate l/s 0.4 0.6 0.75 0.9 0.9
Water connections 1” FBSP – chilled water
Water connection 1” FBSP – condenser water
Shipping weight – dry Kg 170 175 180 185 185
Buffer Tank Litres 80 160


Model TC18W3 TC20W3 TC24W3 TC27W3 TC32W3
System type Chiller Heat rejection Water
Capacity 10C supply 29.5/35 Cooling tower water kW 18.4 20.3 24.3 27.4 31.9
Total power input kW 5.0 5.81 6.16 6.72 7.63
Heat rejection kW 23.4 26.1 30.46 34.1 39.5
Total running current Amps 10.4 12.7 12.7 14.3 15.8
Motor size HP 6 7 8 9 10
Chilled water flow rate l/s 0.9 1.0 1.2 1.4 1.6
Cooling tower flow rate l/s 1.1 1.2 1.5 1.6 1.9
Water connections 1” FBSP chilled water 1 ½”
Water connections mm 1” FBSP – condenser water 1 ½” FBSP
Shipping weight – dry Kg 220 250 250 275 300
Buffer Tank Litres 160 400


Model TC35W3 TC40W3 TC45W3 TC60W3 TC75W3
System type Chiller Heat rejection Water
 Capacity 10C supply 29.5/35 Cooling tower water kW 36.6 40.5 46.8 62.0 78.5
Total power input kW 9.46 11.12 12.12 15.2 18.4
Heat rejection kW 46.1 51.2 59.0 77.2 97.0
Total running current Amps 18.7 21.3 27.0 30.2 37.0
Motor size HP 12 13 15 20 26
Chilled water flow rate l/s 1.1 2.0 2.2 3.0 3.7
Cooling tower flow rate l/s 2.2 2.6 2.8 3.7 4.6
Water connections 1 1/2” FBSP – chilled water 2”
Water connections 1 ½” FBSP 2” FBSP
Shipping weight – dry Kg 350 400 450 500 600
Buffer Tank Litres 400



Selecting the chiller


Pump performance

Pump performance

The unit will usually be supplied with a primary circulating pump as standard.

THERMEX can customize the pump for particular applications and these should be specified at the time of order – the standard pump supplied with the chiller is sized to produce 350kPa of pressure external to the chiller at the required flow rate

The unit has an internal water bypass designed to protect the heat exchanger – it should not be closed under any circumstances

Pump model Amp draw – 1 Ph Amp draw – 3 Ph Motor rating – kW Model
P2 3.1 0.65 TC05-TC10
P3 3.1 0.65 TC12 to TC15
P4 3.1 1.5 TC18 to TC20
P5 3.0 1.2 TC24 to TC27
P6 3.0 1.2 TC20 – TC30
P7 4.8 2.2 TC32 to TC75
RPM 2900
Approvals CE, WRAS, ACS, TR, EAC
Housing Cast iron
Impeller Stainless steel 316


Close tolerance (CT)   The chiller can be manufactured with either a hot gas bypass valve or a VFD on the compressor for close temperature tolerance. Standard tolerance achievable is ±0.5C depending on load conditions

The valve acts as to unload the refrigeration effect to the evaporator as the chilled water temperature approached set point.

If the compressor is fitted with a VFD this will slow the compressor down as water temperature approaches set point and speed it up as it approached set point plus hysteresis. The software has a PID loop to ensure maximum efficiency and maintain temperature control.

BMS Connectivity The chiller can be connected to the high or low level BMS

Low level connectivity will be dry contact for

–        Master run

–        Master fault

High level connectivity is Modbus, SNMP and Bacnet over Ethernet without the need for a gate way

Tandem/ N+1  (T) The chiller can be wired if they are to be installed in a N+1 arrangement so the lead chiller manages the duty cycling of the chillers and controls the chillers if a fault should develop in one of the chillers
Potable water supply (I) The chiller can be manufactured to deliver water for potable water application. A typical installation requires the chiller to be connected to the main water and the pressure from the main is used to supply the process.

The chiller will have a heat exchanger installed which will cool the mains water to the supply temperature in a single pass

If the process does not require water the chillers operation is unaffected

This method of construction also allows the chiller to be used to cool water temperatures above 25C

Soft starters In installations where the power supply is not robust soft starters can be supplied on the compressors to limit the in-rush current on compressor start up.
Redundant pumps The units can be supplied with 2 pumps that duty cycle to share the wear and tear. The software can also start the pump sitting in redundancy if the duty pump develops a fault
Pump UPS (U) The electrical box can be supplied with a separate set of terminals to allow an uninterruptable power supply to be wired so the pump will run continuously – this allows the chiller to keep pumping cold water to the process in the event the 3 phase supply develops and issue and allows the process to shut down in a managed way
Castors The chiller can be supplied on wheels for ease of re-location

All operational cooling capacity, power consumption and current draw data shown above is based on the chiller operating at the limit of its design and is intended to be an indication only.

Each chiller will be individually designed to customer requirements and a detailed product specification will be supplied at time of order including installation instructions and dimensions. The power consumed by the unit and the current it will draw vary depending on how the chiller is constructed. The chillers performance may also vary slightly from the figures above again based on customer requirements.

THERMEX Solutions product range is subject to change without notice


  • THERMEX Solutions warrants all it products for 12 months from the agreed commissioning date – no later than 30 days from invoicing date.
  • The warranty is to the first purchases of the unit
  • The warranty covers all parts and labour to rectify the unit
  • The warranty is subject to THERMEX Solutions terms and conditions which will be provided at the time of order
  • Warranty is subject to Thermex Solutions full terms and conditions


About Thermex Solution

Thermex Solutions is Australia’s largest manufacturer of small capacity specialsied industrial water chillers. The technical team at Thermex have a combined 50 years in the Australian chiller industry – no other company can offer this level of engineering support for our customers critical applications.

Rather than offer imported chillers Thermex has dedicated itself to providing locally specified and manufactured chillers which are supplied with components sourced from the industry’s leading suppliers. With specifying chillers experience counts and no other company has the experience to offer the advice and solutions the market requires.

As the Australian market grows and diversifies, Thermex can offer expert advice on chillers, heat pumps, variable speed high efficiency scroll chillers, air handling and more.

Thermex is back by a nationwide team of service technicians who are trained in the operation and maintenance of Thermex chillers