Aqua Thermal X R Series User manual

User Manual Thermal X - R Series Chillers Page 1
Revision 2
AUGUST 2019
Thermal X - R Series
Owner’s Manual
This guide applies to the following models: R150 to R4000.
Aqua Cooler Pty Ltd
U14, 2-12 Knobel Court
Shailer Park 4128 Qld
www.aquacooler.com.au
1300 AQUA COOLER
1300 278 286

User Manual Thermal X - R Series Chillers Page 2
Table of Contents
Introduction..........................................................................................................................................4
General Information..........................................................................................................................4
Denomination....................................................................................................................................4
Safety ................................................................................................................................................5
First Aid ............................................................................................................................................6
Installation Requirements ....................................................................................................................6
Installation of the Water Path............................................................................................................7
Water Connection Fittings by Model (Male BSPT) .........................................................................8
Electrical Installation ........................................................................................................................8
Preparations For Starting the Chiller ...................................................................................................8
Operating Sequence ..........................................................................................................................9
Operating Precautions.......................................................................................................................9
CHLF2-60....................................................................................................................................10
CHLF4-60....................................................................................................................................10
CHLF12-40..................................................................................................................................11
CDMF20-4...................................................................................................................................11
CDMF32-30.................................................................................................................................12
Aqua Cooler Controller......................................................................................................................12
Unlocking the Keypad on the Aqua Cooler Controller...................................................................12
Operational Logic of Controller.........................................................................................................13
Start Up...........................................................................................................................................13
Temperature Control-Set Point.......................................................................................................13
Temperature Control-Max and Min Set Point ................................................................................13
Temperature Control-High and Low Temperature Alarm Stop......................................................13
Fan Speed Control-Optional ...........................................................................................................13
High/Low Pressure Control ............................................................................................................14
Water Flow/Pump Control..............................................................................................................14
Compressor Hold Time...................................................................................................................14
Alarm Acknowledge Delay.............................................................................................................14
Pump Delay Time ...........................................................................................................................15

User Manual Thermal X - R Series Chillers Page 3
Tandem Control ..............................................................................................................................15
Close Tolerance...............................................................................................................................15
Full Setting List..................................................................................................................................19
Advanced Controller Functions .........................................................................................................21
Downloading Data Log......................................................................................................................21
Calibration of Sensors-Aqua Cooler Controller..............................................................................22
Updating Software ..........................................................................................................................23
Controller Input and Output Schematic..........................................................................................24
Poor Heat Dissipation .....................................................................................................................26
Low Refrigerant..............................................................................................................................26
Low and High Pressure Difference.................................................................................................27
Compressor Not Starting.................................................................................................................27
Maintenance.......................................................................................................................................27
Recommended Preventative Maintenance Program.......................................................................28
Warranty.............................................................................................................................................28
General Application...........................................................................................................................28
Installation Sketch Map of Air Cooled Chiller...............................................................................29
Installation Sketch Map of Water Cooled Chiller...........................................................................30
Internal Structure Sketch Map of Air Cooled Chiller.....................................................................31
Internal Structure Sketch Map of Water Cooled Chiller.................................................................32
Commissioning Sheet ........................................................................................................................33
Notes .................................................................................................................................................36

User Manual Thermal X - R Series Chillers Page 4
INTRODUCTION
Thank you for choosing an Aqua Cooler chiller. In order to use this chiller correctly and efficiently,
please read the following instructions in detail. This manual is designed to explain the installation,
operation and the basic maintenance of the product. It is recommended that for service issues Aqua
Cooler Pty Ltd be contacted before any work commences.
General Information
The chiller is designed to refrigerate and circulate water to a heat developing process to aid in keeping
that process cool. They are supplied with an immersed coiled evaporator, or plate heat exchanger, or
shell&tube evaporator (model dependant), an air-cooled condenser and a rotary or scroll compressor
to circulate the refrigerant gas. Water is circulated out of the unit via a pump. The chiller is designed
to be installed outdoors and refrigerate water for a heat developing process –not for drinking or food
preparation purposes. Any other use of this water chiller is not as it is intended.
Denomination
Chiller Series: Thermal X R Series
Phase: A1:Single-hase | A3: Three-phase
R1200A3-A-CC-CTO
Special Series:
None: Standard Unit
CTO: Close Tolerance
Evaporator Type: CC: Coil in Tank
PP:Plate Pack
ST:Shell&Tube
Refrigerant: A: R134A | C: R407C
Model Number: 150 to 4000

User Manual Thermal X - R Series Chillers Page 5
Safety
WARNING
The unit is only to be installed, operated, maintained and serviced by qualified
persons only. Operation of units such as these can be hazardous and should be
serviced by persons with the proper training and qualifications. The unit and the
Product Manual have markings, warning and instructions on the safe operation of the
unit and they should be adhered to.
This unit is designed to be safe in the use for which it was planned, provided that it is installed, started
up and maintained in accordance with the instructions contained in this manual.
The unit contains electrical components that operate at line voltage and contains moving parts. It must
be isolated from the electrical supply before being worked on. All maintenanceoperations that require
access to the unit must be carried out by suitably qualified technicians who have a thorough
understanding of all necessaryprecautions associated with refrigeration and electrical machinery. The
unit is not to be used by the infirmed or children unless they are supervised by responsible persons
qualified to carry out the supervision. All panels must be re-installed after carrying out any
maintenance work. The unit should be secured to prevent it from toppling over.
Minimum temperature setting is 5°C on the unit. Any lower than this may cause problems with the
evaporator icing up and potentially loss of refrigerant and potentially expensive service costs
The liquids to be cooled must be compatible with the materials used in the constructions of this unit.
These liquids can be water or mixtures of glycol and water for example. The liquids to be cooled must
not be flammable.
WARNING
All wiring must be performed by qualified electricians. Improperly installed wiring
and grounding may result in electrocution and fire hazards. To avoid these hazards
all wiring must be installed in accordance with all the local relevant safety standards
for wiring.
WARNING
The chiller contains refrigerants under high pressure. The system also contains oils
under high pressure. Before the refrigeration circuit can be opened, the refrigerant
should be reclaimed to reduce pressure in the system. Failure to recover the
refrigerant to relieve pressure or the use of refrigerants or refrigerant substitutes that
are not specified for the unit may result in system rupture and explosion.
Refrigerants have a narcotic effect when inhaled in high quantities. Should a leak occur of the
refrigerants then the room should be vacated and should only be re-entered after suitable ventilation.
R407c: Hazchem code 2RE and non –flammable.
R134a: Hazchem code 2RE and non –flammable.

User Manual Thermal X - R Series Chillers Page 6
First Aid
Eye
Contact:
Immediately flush with tepid water or sterile saline solution. Hold eyelids apart for 15 minutes
while irrigating. Seek medical attention.
Inhalation:
Remove from the area of exposure immediately and if you are assisting a victim to avoid being
exposed. Breathing apparatus must be worn in the presence of high concentration of refrigerants.
If victim is not breathing then apply artificial respiration and seek urgent medical help. Give
oxygen is available.
Skin
Contact:
Cold Burns. Remove contaminated clothing and gently flush affected area with warm water
(30°C) for 15 minutes. Apply sterile dressing and treat as for a thermal burn. For large burns
immerse in water for 15 minutes. DO NOT apply any form if direct heat. Seek medical attention.
Ingestion:
For advice contact the poisons centre on 131126 in Australia. If swallowed do not induce
vomiting. Ingestion is considered unlikely due to product form. Advice to Doctor. Use of
adrenaline and other catecholamines may be contraindicated due to possible cardiac sensation.
Treatment for asphyxia.
INSTALLATION REQUIREMENTS
Immediately upon receipt of the chiller, carefully inspect the chiller for any damage that may have
occurred in transit. Any such damage must be noted on the carrier’s delivery documents. It is the
consignee’s responsibility to make any subsequent claims upon the carrier or respective insurance
company. Any hidden damage should be reported to Aqua Cooler as soon as possible.
If the unit is to be stored before installation, then care must be taken to ensure no foreign matter can
get into the water pipes. If the storage is for a prolonged period, it is recommended that the water
circuit be changed with nitrogen and sealed.
A comprehensive commissioning program carried out by qualified refrigeration mechanics is
available through Aqua Cooler. For full details and conditions please contact Aqua Cooler. There is
also a site inspection procedure at the end of this manual.
The unit has been designed to be lifted with a forklift or a crane. The care must be taken when lifting
with a crane that the strapping does not damage the side panels. The units are also designed to be
moved around with a pallet jack, some models also have castor wheels.
The commissioning section at the end of this manual has a site inspection checklist designed to aid in
checking that the site for the chiller installation is suitable. This should be filled out by someone
experienced in chiller installation and returned to Aqua Cooler if there are any doubts about the
installation. It is essential to ensure that adequate and safe service access to the chiller is provided.
Failure to provide safe access to the chiller may lead to additional charges should servicing be
required.
When installing indoors it is important to understand that the chiller will impart a significant heat
load into the environment, and it is essential to ensure a plentiful, unrestricted supply of ambient
temperature air to the chiller. Should you have concerns over the installation site then please contact
Aqua Cooler for advice.
Note: Under no circumstances is ducting to be attached to the condenser fan outlet.

User Manual Thermal X - R Series Chillers Page 7
At least 800mm should be left around the unit (Rear: 1400mm) to allow for proper ventilation of the
condenser. The unit should not be installed in a closed-off room. Preferably there should be no
obstructions above the chiller, with a minimum of 2000mm clearance permitted in other
circumstances. In addition to ensuring enough space around the chiller for free air movement,
provision must be made around the chiller for service and regular maintenance. The chiller must be
installed on a firm and level foundation, of adequate strength to support the chiller’s full operating
weight.
Installation of the Water Path
Before connecting the make-up water, check the suction pressure on in the chiller to ensure there is
no refrigerant leak. A refrigeration mechanic can do this with gauges or if the unit has a smart
controller the pressure can be viewed on the display on the controller in the electrical box. If there is
a leak in the refrigeration circuit, water may be drawn into the refrigeration circuit on startup. It is
recommended that the chiller be inspected by a qualified refrigeration mechanic before filling the
system with water.
All pipe work with refrigerated water running to and from the chiller should be fitted with water-
resistant insulation material to prevent sweating and maximise the efficiency of the chiller.

User Manual Thermal X - R Series Chillers Page 8
Water Connection Fittings by Model (Male BSPT)
Models:
R150
R180
R230
R300
R330
R420
R540
R670
R830
R1000
R1200
R1330
R1500
R2000
R2500
R3000
R4000
Water Out:
1”
1”
1½”
2½”
Water In:
1”
1”
1½”
2½”
Drain:
1”
1”
1”
1”
Overflow:
1”
1”
1”
1”
Water Supply:
½”
½”
½”
½”
Electrical Installation
The chiller draws a large amount of current and it is important that the connection of the unit to the
power supply must be carried out in accordance with Australian standards and only by a licensed
electrician.
The power supply system on-site and the circuit protection must be designed for the total current of
the unit taking into account the inrush current and the lock rotor amps of the compressor–see the
brochure. The circuit breaker must be set no more than 125% of the units rated load current.
Mains supply cables must be sized to ensure adequate voltage at the chiller under all load conditions.
Three-phase power must be symmetrical, ensuring equal effective voltage and equal phase angle
between consecutive phases. The pump and the compressor rely on correct phase rotation. Ensure all
electrical connections are tight prior to starting up.
PREPARATIONS FOR STARTING THE CHILLER
For the initial operation of the chiller, please confirm the following:
1. The power supply voltage and phase should be in accordance with the specifications listed on
the chiller’s marking plate.
2. Check the pipe and return water pipe are connected properly and the valve is open.
3. Fill the water tank with water or coolant before starting the water pump. (Ensure you are using
a suitable coolant according to your requirements)
4. For water-cooled units, please pay attention to the moving direction of the water pump and
confirm the tower fans are not moving in the opposite direction. If the pump is three-phase,
change any two relative phase lines to reverse its direction. Then close the switch after
connections have been made.

User Manual Thermal X - R Series Chillers Page 9
Before starting up the chiller have the following installation requirements been carried out
1. The power supply voltage and phase should be in accordance with the specifications listed on
the chiller’s marking place.
2. Check the ventilation of the unit.
3. Check the refrigerant leak through pressure gauge before filling the unit with water
4. Check the bypass in the tank. Make sure it’s closed to ensure the water flow to application.
5. Check the power supply according to the requirements
Operating Sequence
1. Open the valve of the supply pipe and return pipe and ensure the waterway is unimpeded.
2. Turn the unit on with the master power switch.
3. Press the run button on the interface panel to start the controller.
4. Press the compressor start button on the interface panel to start the compressor.
5. Pressing the power button while the unit is running will power off the unit.
The unit is ready to be started up. Once power is provided to the chiller, open the clear plastic guard
over the ON/OFF switch and turn the unit on and the unit will start automatically. The pump will start
immediately.
The compressors have a start delay. Once the compressors have cut in, watch the display to ensure
that the water temperature in coming down. Set points and operational parameters are displayed on
the screen. Any faults are indicated on the face of the control panel.
It is a good idea after the unit has been running for 5 minutes check that the water temperature is
dropping and check there are no bubbles in the sight glass (if fitted) –if these two things are happening
then the unit is running properly. Give the system a final check to ensure that there are no water and
refrigerant leaks.
Operating Precautions
1. Chilled water pump cannot be started without water in the water tank.
a. All standard models are equipped with water level protection in the water tank (except
for closed water tanks). The default setting is when the water level is too low, the unit
will throw an alarm and the pump will keep operate. However, this function can be
changed in controller. Once the function is changed, pump will stop running if water
level gets too low. Please make sure the function setting fits the application
requirement.
(Manufacturer Parameters –Control Setting –Low water lv. & Lack of water)
2. Switching the operating switches frequently should be avoided.
3. When the chilled-water temperature reaches the set temperature, the compressor will stop.
4. In order to prevent the evaporator freezing, do not set temperature below 5 °C (Except for
sub-zero models)
5. When the unit is not in use for long periods of time, drain the tank
6. To ensure the most efficient operation, please clean the condenser, evaporator, and the water
filter (if fitted) regularly.

User Manual Thermal X - R Series Chillers Page 10
PUMP MODEL PUMP CURVES BY CHILLER
Chiller Model
Pump Model
R150, R180, R230, R300, R330
CHLF2-60
R420, R540, R670, R830, R1000, R1200, R1330
CHLF4-60
R1500, R2000, R2500
CHLF12-40
R3000
CDMF20-4
R4000
CDMF32-30
CHLF2-60
Model
Driving Motor
Q(𝑚3/ℎ)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
(𝑘𝑊)
(ℎ𝑝)
CHLF2-60
0.75
1
H(𝑚)
54
50
48
42
38
33
25
CHLF4-60
Model
Driving Motor
Q(𝑚3/ℎ)
1
2
3
4
5
6
7
(𝑘𝑊)
(ℎ𝑝)
CHLF4-60
1.1
1.5
H(𝑚)
55
53
50
45
37
31
26

User Manual Thermal X - R Series Chillers Page 11
CHLF12-40
Model
Driving Motor
Q(𝑚3/ℎ)
7
8
9
10
11
12
13
14
15
16
(𝑘𝑊)
(ℎ𝑝)
CHLF12-40
2.4
3.3
H(𝑚)
47
46
45
43.5
41.5
39.5
37.5
35
31.5
27.5
CDMF20-4
Model
Driving Motor
Q(𝑚3/ℎ)
0
10
12
14
16
18
20
22
24
26
28
29
(𝑘𝑊)
(ℎ𝑝)
CHLF12-40
5.5
7.4
H(𝑚)
55.5
52.5
51
50
49
48.5
47
45
41.5
37
33
31.5

User Manual Thermal X - R Series Chillers Page 12
CDMF32-30
Model
Driving Motor
Q(𝑚3/ℎ)
0
16
20
24
28
32
36
40
(𝑘𝑊)
(ℎ𝑝)
CHLF32-30
55
7.4
H(𝑚)
57
54
51
48
44
40
35
27
AQUA COOLER CONTROLLER
The chiller unit features an interface panel with LCD display and input buttons to configure certain
functions of the unit.
Unlocking the Keypad on the Aqua Cooler Controller
The key pad on the smart controller will lock out after 10 minutes of non-use. To unlock the key pad
press the [ESC] , [DOWN] , [UP] and [ESC] keys in sequence

User Manual Thermal X - R Series Chillers Page 13
OPERATIONAL LOGIC OF CONTROLLER
Start Up
Pump ON, Ball Valve OPEN (if fitted), 10 second delay and then flow readings are taken to check
pump is running normally. After compressor hold time and water temperature is above the set point
plus hysteresis, COMP1 ON. Once the water temperature reaches set point then compressor OFF.
Unit then waits for both the hysteresis and compressor hold time again and then re-starts compressor.
When there are two compressors such as model R3000 and R4000, the 2nd compressor will start after
the set delay start time if required. The logic works as the system will start the 2nd compressor at the
higher temperature than the 1st compressor after the delay time (hold time). This designed to give the
lead compressor to handle the base load and subsequent compressor acts as a cooling capacity top up.
Temperature Control-Set Point
Controller will turn compressors off when the set point is reached. Compressors will be turned on
again once water temperature reaches set point temperature plus hysteresis.
Temperature Control-Max and Min Set Point
This prevents casual operator from setting supply temperatures too high or too low
Temperature Control-High and Low Temperature Alarm Stop
High and low temperature limits can be set in order that if they are breached then the chiller will shut
down. In rare instances a component may fail without triggering any internal fault indicators. The
chiller may think it is running normally yet not refrigerating. It is recommended that high and low
temperature stop is set to yes to prevent this happening.
Fan Speed Control-Optional
The controller monitors the discharge pressure of each of the refrigeration circuits and makes
decisions for fan speed based on this value. There are 3 ways to control the fans and the settings can
be changed in the controller.
ON ZERO FULL: The fans can be set to shut down while the compressor is running If the pressure
drops below the minimum set point –say on a cold day –then the fans will shut down to prevent over
condensing even though the compressor may still be running.
ON LOW FULL (Default option): In the menu these is a valve for minimum run (default 1500 kPa)
which when reached will start the fans and run them at 20% speed. There is a fan full speed setting
(default 2200 kPa) that will run the fans at full speed. The fan speed will then run proportionally
between these two values. These operational pressures will be different for units supplied with R134a
–see the setting section of the manual

User Manual Thermal X - R Series Chillers Page 14
OFF FULL SP ONLY: This option has the fans off when the compressor is off and full speed when
the compressor is on.
High/Low Pressure Control
The system will monitor the discharge pressure of each of the refrigeration circuits and will send a
warning when the pressure starts to get too high or too low. If the alarm pressure is breached, then it
will shut the unit down. It will do these 3 times in a 24-hour period before shutting the chiller down
permanently.
HP/LP Warning
R134A
R407C
Pressure
Pressure
Aqua Cooler - PCB
HP
2300kPa
2750kPa
LP
80kPa [170kPa]
200kPa [400kPa]
The chiller can only be restarted once pressure is back to a reasonable pressure [__kPa].
Water Flow/Pump Control
The system monitors flow rates and will send a warning if a flow rate is breached and shut the chiller
down if the flow alarm point is breached. Zeroing the flow alarm turns it off. It is recommended that
the flow alarm is not turned off.
The pump can be set to run if the chiller develops a fault –by turning this feature ON in the program
will keep water to the process. This water will of course get warm but it is designed to keep the
process cool long enough for system shut down.
If the unit is supplied with a redundant pump the controller will shut the pump down when it detects
a problem with the flow. The pump sitting in redundancy with be started. If there is a problem with
the flow on this pump it will be shut down and the original pump started.
This process will happen 3 times in 24 hours before the unit is shut down permanently and every
week the pumps are duty cycled to share the wear and tear on the units
Compressor Hold Time
The controller will wait 120 seconds before starting compressors up after shut down to prevent too
many start-ups.
Alarm Acknowledge Delay
This delay is the time that the program waits before flagging an alarm. This maybe useful in the event
of a tandem switch over to a tank of very warm water for example. If the water is too warm then the
high water temperature alarm maybe triggered. If there is a delaythen it will give the newly activated
chiller time to pull the water temperature down.

User Manual Thermal X - R Series Chillers Page 15
Pump Delay Time
The controller will wait for a certain time before taking flow reading –it is designed to give the ball
valve time to open before indicating flow problems
Tandem Control
One chiller will need to be assigned a master chiller and the other a slave chiller –see “CHANGING
THE CONTROLLERS PARAMETERS”section for instructions on doing this. The master chiller
will do all the controlling and timing. OUT8 (Standby: Tandem link enable/ Status) on the control
board will be energised while it is running closing the indicated input (enable) on the standby chiller
not allowing it to run. After a week the output will de-energise and the standby chiller will run –its
OUT8 energising closing the input on the now standby chiller.
Close Tolerance
If the unit has been manufactured for close tolerance then the controller will attempt to keep the water
temperature within the close tolerance range around the midpoint between the set point and the
hysteresis.
For example if the set point is 10°C, the hystersis 2°C and the close tolerance 1°C then the controller
will attempt to keep the temperature between 10.5°C and 11.5°C. The ability of the chiller to keep
the temperature as close to the set point will vary depending on heat load. The closer the heat load is
to the chillers rated capacitythe more accurate the chiller can maintain the close tolerance. Under low
loads the chiller will be unable to maintain less that 1°C close tolerance.
Putting the unit in standby mode
Using the key pad the unit can
be put into standby mode if
there is a reason to shut the
unit down for a short amount
of time.
Scroll through the menu to find “KEYPAD STANDBY”
Press “OK” and then “OK TO CONFIRM” The unit will stop running
The screen will be showing “OK TO RE-START” and “KEYPAD
STANDBY MODE” will be flashing
Press “OK” and the chiller will go through its normal start up
procedure
Note: This does not turn the unit off and the electrical circuitry inside the electrical box will still be live.
Chiller achieves close tolerance control by using Aqua Cooler PCB to collect high pressure and low
pressure data. PCB uses collected data to calculate suitable hot gas amount and send signal to hot gas
solenoid valve.

User Manual Thermal X - R Series Chillers Page 16
CHANGING THE CONTROLLERS PARAMETERS
By opening the electrical box the programmable circuit board controller can be seen mounted on the
door. The four small red buttons next to the display are the buttons used for changing the parameters
in the programming. The two buttons on the left are the up and down scroll buttons. The button top
right is the OK button and the last button is the ESC.
Water Supply Temperature
Setting the water supply
temperature –Temperature that
the refrigeration system with cut
out.
Scroll to the parameters menu then to the set points sub menu
Scroll through the menu until “SETPT WATER TEMP” shows
Press “OK” and “SET WATER TEMP” will show and the water temperature
will flash
Use scroll keys to adjust up or down and press “OK” again and “NEW
WATER TEMP” will show
Press the escape key to revert to home page
Temperature Hysteresis
Temperature between
refrigeration circuits cut out and
cut in.
Scroll to the PARAMETERS MENU then to the SET POINTS sub menu
Use scroll keys to find “TEMP HYSTERESIS
Default is 2°C –press “OK” and SET TEMP HYSTER” will show
Use scroll keys to change value and press “OK”
“NEW TEMP HYSTER” will show
Press escape keys to return to home page
NOTE –hysteresis cannot be set below 2°C to prevent compressor short
cycling
Compressor Hold Time
After the cooler has reached cut
out temperature and the
compressor will turn off. In
order to minimise compressor
starts there is a rest time.
Range: 5s to 180s
Scroll to “PARAMETER MENU” and then to the DELAY sub menu
Scroll to “COMP HOLD TIME” and press “OK”
Value will flash and can be set to minimum of 5 seconds and maximum of 3
minutes –IT IS RECOMMENDED THAT THIS VALUE IS NOT
ALTERED TO BELOW THE DEFAULT 2 MINUTES
Press “OK” and screen will confirm choice
Press the escape key to revert to home page

User Manual Thermal X - R Series Chillers Page 17
Maximum and Minimum Temperature Limits
This set a minimum and
maximum temperature limit for
the chiller and is there to
prevent casual operators setting
the supply temperature above or
below recommended set points.
Range: -5°C to 20°C Min
10°C to 30°C Max
Scroll to the PARAMETERS MENU then to the SET POINTS sub menu
Scroll to “MIN TEMP LIMIT” or “MAX TEMP LIMIT”
Press “OK” and “SET MAX LIMIT” will show will value flashing
Select choice and press “OK” and the screen will confirm choice
Press the escape key to revert to home page
High and Low Temperature Stop
High and low temperature alarm
cut out –the unit can be set to
go into standby if the high and
low temperature alarms are
breached and they will stay in
standby until the fault is cleared
by pressing the “OK” button
Range: Yes and No
Scroll to “PARAMETER MENU” then to the SYSTEM sub menu
Scroll to “HIGH TEMP STOP” and “LOW TEMP STOP” and press “OK”
“SET HI TEMP STOP” will show with “YES” and “NO” manu choices
Change as desired, press “OK” and “STOP ON HI TEMP” will show
confirming choice
Do same to change low temperature standby
Press the escape key to revert to home page
High and Low Temperature Alarm
High and low temperature alarm
cut out –the unit can be set to
go into standby if the high and
low temperature alarms are
breached and they will stay in
standby until the fault is cleared
by pressing the “OK” button
Range: Low: -5°C to 10°C
High 10°C to 40°C
Scroll to “PARAMETER MENU” and to the SET POINTS sub menu
Scroll to “HIGH TEMP ALARM” and “LOW TEMP ALARM” and press
“OK”
“SET HI TEMP ALARM” will show temperature choices
Change as desired, press “OK” and “NEW HI TEMP ALM” will show
confirming choice
Do same to change low temperature alarm
Press the escape key to revert to home page
Setting Water Flow Alarms
Setting the alarm for the chilled
water and condenser water flow
–this setting when breached
will place the unit into standby
Range: 0-5 L/s
Scroll to “PARAMETER MENU” and to the SET POINTS sub menu
Scroll to “FLOW ALARM 1” for chilled water supply and “FLOW ALARM
2” for condenser water flow
Press “OK” and “CONFIG FL ALM1” will show with the value flashing
Change the value to where the warning needs to be and press “OK” – the
alarm rate should be below the value of the warning
The screen will confirm your choice
Press the escape key to revert to home page
Setting the waring for chilled
water and condenser water flow.
This setting will simply give a
warning that the flow rate is
dropping –the chiller will still
run.
Range: 0-5 L/s
Scroll to “PARAMETER MENU” and press “OK”
Scroll to “FLOW WARNING 1” for chilled water supply and “FLOW
WARNING 2” for condenser water flow
Press “OK” and “CONFIG FL WARN1” will show with the value flashing –
as a rough guide the flow rates for the condenser water and the chilled water
should be around 1.4 l/s
Change the value to where the warning needs to be and press “OK”
The screen will confirm your choice
Press the escape key to revert to home page

User Manual Thermal X - R Series Chillers Page 18
Setting High Pressure (HP) Alarms and Warnings
Controller will send out and
warning at warning pressure and
shut unit down at alarm pressure
Range: 2000 –4000 kPa for
both
Scroll to “PARAMETER MENU” and to the SET POINTS sub menu
Scroll to “ HP Warn Press”
Press “OK” and choices will be shown
Select choice and press “OK” and the screen will confirm choice
Press the escape key to revert to home page
Scroll to “PARAMETER MENU” and press “OK”
Scroll to “ HP ALM Press”
Press “OK” and choices will be shown
Select choice and press “OK” and the screen will confirm choice
Press the escape key to revert to home page
Setting Fan Speed Control
If fan speed controllers are
installed the minimum run
speed (20%) and max run speed
(100%) can be set again
corresponding discharge
pressures
Scroll to “PARAMETER MENU” and to the SET POINTS sub menu
Scroll to “Fan Min SP Pressure”
Press “OK” and change required pressure
Select choice and press “OK” and the screen will confirm choice
Press the escape key to revert to home page
The same procedure is followed to set “Fan Max SP pressure”
Note –of fan speed controller are being retrofitted to a unit then the fan
speed option will have to be activated in the parameters menu.
Setting Alarm Acknowledge Delay
Range 0-120 Minutes
Scroll to “PARAMETER MENU” and press “OK”
Scroll to “ALM ACK DELAY”
Press “OK” and change to setting
Select choice and press “OK” and the screen will confirm choice
Press the escape key to revert to home page
It is recommended that the setting is not greater than 1 or 2 minutes
Tandem Installation
Assigning the chillers into a
single or tandem set installation
Scroll to “PARAMETER MENU” and then to the SYSTEM sub menu
Scroll to “SINGLE/DUAL AUTO” and press “OK”
Change set up to “DUAL AUTO OPER’N” and press “OK”
The screen will confirm your choice
Press the escape key to revert to home page
NB –This only need be done on the master chiller
Assigning chiller role –Master
or Slave
Scroll to “PARAMETER MENU” and then to the SYSTEM sub menu
Scroll to “MASTER/ SLAVE” and assign one chiller the master chiller and
one chiller the slave chiller
Screen will show “SET MASTER/ SLAVE” and change to whichever one is
which and press “OK”
The screen will confirm your choice
Press the escape key to revert to home page
Duty Cycle Time
Scroll to “PARAMETER MENU” and then to the SYSTEM sub menu
Scroll to “CYCLE CHANGEOVER” and press “OK”
‘SET CYCLE PERIOD” will show and the choices are “OFF” where there
will be no duty cycling at all but the chillers will still a ct in tandem –ie of
one develops a fault it will start the other up. “10 MIN CYCLE TEST” which
will duty cycle chiller every ten minutes –this is more for installation testing
and will revert to a weekly cycle after to 2 hours and “WEEKLY CYCLE”
which will duty cycle the chillers weekly. Note that if chillers are to switch at
a set time every week then the timer will need to be set as mentioned above
Press the escape key to revert to home page
Weekly Timer Reset
Scroll to “CYCLE TIMR RESET” on the home screen
Press “OK” and “ZERO CYCLE TIMR” and “PRESS OK”
“NEW CYCLE STARTED” will show and the clock will reset
At any time during the week the timer can be viewed to see how long to
changeover

User Manual Thermal X - R Series Chillers Page 19
FULL SETTING LIST
Some of the settings are not for this model of chiller and it is recommended that THEY ARE NOT
altered without a full understanding of the chillers programming or without checking with Aqua
Cooler first. The settings reflect Aqua Cooler recommended setting for the installation ordered. If at
a later time another chiller is installed in tandem or the chiller is added. Some of the setting may
change.
PARAMETER MENU
MENU ITEM
SETTING
MENU ITEM
SETTING
SYSTEM MENU
SINGLE DUAL/OPN
Single
CLOSE
TOLERANCE
Normally OFF. ON for Close Tolerance
Units
MASTER /SLAVE
MASTER
SLAVE on chiller in
redundancy
HIGH TEMP STOP
NO –set to YES only if warm water
will damage process otherwise this will
keep chiller running as long as possible.
CYCLE
CHANGEOVER
NO in stand-alone
installation
YES on master chiller
in N+1 installation
VAR SPEED
FUNCTION
OFF
On for chillers fitting with VFD on
compressor or the pump
NO HE SENSORS
0
LOW TEMP STOP
YES
AUX INPUTS
N/O
FAN SPEED
CONTROL
YES
SNMP DATA
Fractional
NETWORK
CONTROL
OFF
ON for chillers installed in networked
installation
SPRAY COOL
OFF
EMAIL LOG MENU
EMAIL ALARM
ON/OFF
OFF
MANAGE DATA
LOG
OFF
DATA LOG PERIOD
1 mins
SET TIME MENU –Set all after install
DELAY HOLD MENU
ALARM ACK
DELAY
0
COMPRESSOR
HOLD TIME
120 Seconds
UNLOAD HOLD
TIME
15
PUMP DELAY
TIME
20
SET POINT MENU
PULL DOWN PER
MIN
0.6
FAN MIN SP
PRESSURE
1500 with R407c
1200 with R134a
LP WARNING
PRESSURE
300 with R407c
100 with R134a
LP ALARM
PRESSURE
200 with R407c
80 with R134a
CLOSE
TOLERANCE TEMP
0.5 If close tolerance
function is activated
LP HYSTERESIS
PRESSURE
200
HP ALARM
PRESSURE
2750 with R407c
2300 with R134a
HP WARNING
PRESSURE
2600 with R407c
2200 with R407c
LOW TEMP
ALARM
0
HIGH TEMP
ALARM
30
HIGH RETURN
ALARM
30
FAN MAX SPEED
PRESSURE
2200 with R407c
2000 with R134a

User Manual Thermal X - R Series Chillers Page 20
LOW RETURN
ALARM
0
TEMPERATYRE
HYSTERESIS
2
MIN TEMP LIMIT
5
SUPPLY FLOW
ALARM 1
0.1 L/s
MAX TEMP LIMIT
20
SUPPLY FLOW
WARNING 1
Varies with pump supplied
SET PT AMB
OTEMP
45
SET POINT TEMP
Customer Specific
SENSOR MENU
CCT1 SUCT PR
SIZE
0-10 Bar
SECONDARY
SUPPLY CAL
See Procedure
CCT1 DIS PR
DISCH PR SIZE
0-30 Bar
AMBIENT CAL
See Procedure
SUPPLY FLOW
PIPE
DN 32
SECONDARY
RETURN CAL
See Procedure