Keg King Thermentor King Operator's manual

Thermentor King User Manual
https://www.kegking.com.au
Keg King is a registered business name of MCH Australia Pty Ltd
Thermentor King
Compact Fermentation Temperature Control System
User Instruction Manual

Thermentor King User Manual
Page 2 of 16
https://www.kegking.com.au
Keg King is a registered business name of MCH Australia Pty Ltd
Warnings and General Safety
WARNI NG
Beware of electricity around liquids!
Ensure power supply packs and power cords are placed well away
from any potential spills and pooling condensation.
WARNI NG
When plugging the 12V Power Supply Pack into the front of the unit, ensure the
plug is in the correct orientation, and that the groove in the plug matches up
with the key in the 12V DC Power Connection
WARNI NG
The pump starts when the Temperature Control Panel (STC-1000) is powered on.
DO NOT power up the controller until you are ready to prime the pump with
coolant OR the unit is already primed and ready to operate.
WARNI NG
Do not operate the unit with the pump running dry for extended periods
as this will dramatically shorten the life of the pump.
WARNI NG
Although it is highly unlikely that coolant will make its way into the wort/beer,
we recommend the use of food-grade glycol diluted with water for the coolant.
Keg King sells food-grade glycol for this application.
Please read the entire manual before operating.

Thermentor King User Manual
Page 3 of 16
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Keg King is a registered business name of MCH Australia Pty Ltd
Table of Contents
Warnings and General Safety .................................................................................................................... 2
Keg King ....................................................................................................................................................... 4
Introduction.................................................................................................................................................. 5
Unboxing ...................................................................................................................................................... 6
Included Items ......................................................................................................................................... 6
Additional Items (not included)................................................................................................................. 6
Getting to Know the Unit ........................................................................................................................... 8
The Unit .................................................................................................................................................... 8
The Temperature Control Panel ........................................................................................................... 9
Instructions ........................................................................................................................................... 9
Specifications........................................................................................................................................ 9
Initial Setup................................................................................................................................................. 10
Fermenter / Keg Preparation.............................................................................................................. 10
Constructing the Coolant Circuit ........................................................................................................ 10
Connecting to the Fermenter .............................................................................................................. 11
Preparing the Coolant........................................................................................................................... 12
Priming the Pump.................................................................................................................................. 12
General Operation..................................................................................................................................... 14
Setting the Temperature and Other Settings .................................................................................... 14
Troubleshooting......................................................................................................................................... 16

Thermentor King User Manual
Page 4 of 16
https://www.kegking.com.au
Keg King is a registered business name of MCH Australia Pty Ltd
Keg King
Whether you're a brewer or someone wanting to put drinks on tap in your own home, cafe or
office, Keg King offers beverage creation and keg dispense solutions for amateurs and pros!
We don't just sell products, we innovate, design and manufacture our equipment to bring your
beverage ambitions to life!
Our brands include:
•King Kegs, our Australian Made P.E.T. kegs
•Apollo P.E.T. Pressure Fermenters & Unitanks
•KegMaster Kegerators
•Atomic 15 Brewery Cleaners
•UltraTap Twist FC Faucets
•Spundy spunding valves
•the KegMaster Solstice Fridge
•and more!
Check the resellers map on our website to find where our products are available in North
America, UK, EU, Aus, NZ and South Africa.
https://www.kegking.com.au/retailers
Since 2009, Keg King’s mission is to make the best brewing & dispensing equipment in the
world!
Check out our helpful instructional videos on the Keg King YouTube Channel
https://www.youtube.com/c/KegKingvideos
Enjoy your Thermentor King!!

Thermentor King User Manual
Page 5 of 16
https://www.kegking.com.au
Keg King is a registered business name of MCH Australia Pty Ltd
Introduction
The Thermentor King (released in 2021) is a low-cost system designed to use a glycol mixture
for controlling temperature in small fermenters and kegs.
It has a generous capacity for heating (150 watts) that will keep a fermenter warm on the coldest
days.
Cooling 30 - 35 liters of liquid inside a proper insulating jacket will achieve approximately
20 - 22°C (36 - 40°F) of temperature differential to ambient depending on configuration.
The unit is controlled by an industry standard STC-1000 temperature controller which allows
the user to set their desired temperature.
This innovative design from the Keg King Engineering Department incorporates a small priming
reservoir with an integral pump which pushes the coolant through an enhanced Peltier
cooling/heating unit.
A thermal cutout will stop the system if temperature of the liquid exceeds 40°C (104°F).
The unit is designed to work with 12 volts DC and can be powered with a mains 25A 12V DC
power pack. It may also be powered by batteries, solar or a mix of these that can provide 12
volts at 25 amps or more.
NOTE: Power packs must carry local approvals of the power
authorities in your jurisdiction.

Thermentor King User Manual
Page 6 of 16
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Keg King is a registered business name of MCH Australia Pty Ltd
Unboxing
Please check that the unit is free of damage and note that it is designed to operate standing
vertically with the black reservoir cap on top.
Included Items
1. The Thermentor King unit
2. Temperature Sensor Cable
The sensor probe end is waterproof and can be submerged in
liquid.
Additional Items (not included)
25A 12V DC Power Supply Pack
(may be included)
Keg King part code 8340-2
Mains Power Cord
(may be included)
Keg King part code 4734
Fermenter or Keg
e.g. Apollo 30L Fermenter
Keg King part code 10605

Thermentor King User Manual
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Keg King is a registered business name of MCH Australia Pty Ltd
An Insulating Jacket
e.g. Apollo Jacket
Keg King part code 10667
Cooling Coil
e.g. Apollo Cooling Coil
Keg King part code 11183
2 x Liquid Ball Lock Disconnect
Keg King part code 8275
Coolant Tubing
e.g. EVAFresh Beer Line
Keg King part code 5207
“Flow and Tell” visual flow
indicator
(Optional, but recommended)
Keg King part code 11244
Glycol
(Optional, but recommended)
Keg King part code 8336-500
Pipe insulation sleeves
for the coolant tubing
Available from hardware stores
Water for the circulating coolant
250 - 350ml

Thermentor King User Manual
Page 8 of 16
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Keg King is a registered business name of MCH Australia Pty Ltd
Getting to Know the Unit
The Unit

Thermentor King User Manual
Page 9 of 16
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Keg King is a registered business name of MCH Australia Pty Ltd
The Temperature Control Panel
Code
Function
Set Range
Recommended value
F1
Temperature set value
-50 to 99°C
The yeast fermentation
temperature (e.g. 18°C)
F2
Hysteresis
1 to 10°C
0.5°C
F3
Compressor / Cooling delay
1 to 10 minutes
0 minutes
F4
Temperature calibration value
-10 to +10°C
0°C
Instructions
Power ON:hold for 5 seconds. Power OFF: hold for 3 seconds
During normal operation, the screen displays the real-time temperature (RT)
The controller switches between heating and cooling modes.
Cooling Mode: when RT ≥ST (set temperature) + F2 (hysteresis value)
During Cooling mode, the Cooling Indicator is illuminated.
If the Cooling Indicator is flashing, it indicates the cooling equipment is undergoing the
compressor / cooling delay (not necessary for this unit).
When RT ≤ ST the cooling stops, and the Cooling Indicator is no longer illuminated.
Heating Mode:when RT ≤ ST (set temperature) –F2 (hysteresis value)
During Heating mode, the Heating Indicator is illuminated.
When RT ≥ ST, the heating stops, and the Heating Indicator is no longer illuminated.
Example:
ST is set to 10°C, and F2 is set to 3°C
Cooling Mode starts when RT ≥ 13°C and stops when RT ≤ 10°C
Heating Mode starts when RT ≤ 7°C and stops when RT ≥ 10°C
Specifications
Temperature measuring range: -50~99°C
Resolution: 0.1°C
Accuracy: ±1°C (-50~70°C)
Sensor error delay: 1 minute
Power supply: 12V DC
Power consumption: ≤3W
Sensor: NTC sensor (1PC)
Relay contact capacity: Cool 10A/250VAC; Heat 10A/250VAC
Ambient temperature: 0~60°C
Storage temperature: -30~75°C
Relative humidity: 20%~85% (No condensate)
Power ON & OFF
Confirm & save the set value
Set key, Entry and Set parameter
Increase value / Select Function
Decrease value / Select Function
Cool
Cooling indicator
Heat
Heating indicator
Set
Setting indicator

Thermentor King User Manual
Page 10 of 16
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Keg King is a registered business name of MCH Australia Pty Ltd
Initial Setup
Also check out our Thermentor King video on YouTube
Fermenter / Keg Preparation
1. Wrap the fermenter / keg vessel in a thermally efficient
insulating jacket.
2. The jacket is recommended to have high quality
insulating foam at least 5cm thick.
3. Keg King offers various insulating jackets to suit their
conical fermenter vessels.
If you make your own insulation, ensure the sides and
bottom have no gaps for cool air to leak from.
4. Position the vessel where it is going to stay, as it will be
more difficult to move once connected to the
Thermentor King.
Constructing the Coolant Circuit
You will need to acquire tubing with ball lock (liquid) disconnects to make the coolant circuit
between the Thermentor King and a cooling coil in your fermenter or Keg.
This tubing should be as short as practically possible and be fully covered by foam pipe
insulation (available from hardware stores etc.).
It is recommended that the “Flow and Tell” visual flow indicator be added to the coolant tubing
(best position is close to the Coolant Outlet), so that it will be obvious that the coolant is flowing
through the circuit at a reasonable rate.
1. Cut the coolant tubing to the
required lengths
2. Cut the pipe insulation to the
required lengths, allowing extra
length to cover connections
3. Thread the coolant tubing into the
pipe insulation.
4. Connect a section of coolant tubing
to each side of the cooling coil as
shown in the diagram to the right
5. Optionally, connect the “Flow and
Tell” to the coolant tubing as shown
in the diagram to the right
6. Connect disconnects to the coolant
tubing as shown in the diagram to
the right

Thermentor King User Manual
Page 11 of 16
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Keg King is a registered business name of MCH Australia Pty Ltd
Connecting to the Fermenter
1. Connect the coolant lines from the coolant connections on the Thermentor King to the
fermenter Cooling Coil
2. Connect the temperature sensor cable to the sensor connection on the unit.
3. Insert the temperature sensor into the fermenter thermowell. If the fermenter does not
have a thermowell, you can tape the sensor to the outside of the fermenter, preferably
below the beer/wort level
4. Ensure the Insulating Jacket fully encloses the vessel, especially at the bottom.

Thermentor King User Manual
Page 12 of 16
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Keg King is a registered business name of MCH Australia Pty Ltd
Preparing the Coolant
Depending on the circulating coolant tube length, you will need approximately 250-350ml of
liquid.
It is possible to operate with just water, but there is a chance of blockage due to ice forming in
the cooling unit.
To avoid ice forming, it is recommended to use a mixture of glycol and water made with 3 to
4% glycol
e.g. mix 330ml water with 10 to 14 ml glycol.
NOTE: Although glycol is recommended to protect against
freezing, glycol is an inefficient thermal conductor, and using a
coolant mixture with too high a ratio of glycol will reduce
efficiency.
We recommend a ratio of 3 to 4% glycol to water.
Priming the Pump
Do not operate the unit with the pump running dry for extended
periods as this will dramatically shorten the life of the pump.
The pump starts when the Temperature Control Panel (STC-1000)
is powered on.
Before applying power, ensure you have coolant ready.
Using a flow indicator is recommended to show that coolant
is flowing correctly.
1. Position the Thermentor King roughly
level with the beer/wort vessel (or
even a bit higher to get started).
2. Unscrew the black cap off the
priming reservoir.
3. Fill the priming reservoir with coolant,
without overflowing it.
4. Connect the unit to power and power
it on.
5. If the Temperature Control Panel does
not light up, press and hold the
power button until the Temperature
Control Panel turns ON.
You should hear the integral pump start up. It may sound strongly as there may not
yet be enough liquid to fill the coolant circuit.
6. IMPORTANT - Check that the temperature is set between 18 - 25°C (64.4 - 77°F).
See the section titled “Setting the Temperature and Other Settings”
7. Slowly pour more coolant mixture into the priming reservoir.
You should be able to hear the pump starting to move the coolant.
8. Continue to top-up the priming reservoir, without overflowing it.
You should be able to observe the coolant level drop as the coolant circuit fills.

Thermentor King User Manual
Page 13 of 16
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Keg King is a registered business name of MCH Australia Pty Ltd
9. Keep topping up the coolant until the level remains steady.
Some bubbles may escape while the coolant circuit continues to fill.
Once the bubbles have stopped and the level remains steady, the pump noise should
subside to a quiet whirr.
10. Replace the black cap on the priming reservoir and tighten gently, but firmly.
11. If the pump sounds like it is labouring, check that there are no kinks or blockages in
the tubes.
If using a flow indicator, some bubbles may get caught in it.
To remove the bubbles, tilt the flow indicator vertically so
that the coolant flows through it in the upward direction.
The bubbles should work their way up and out.

Thermentor King User Manual
Page 14 of 16
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Keg King is a registered business name of MCH Australia Pty Ltd
General Operation
The temperature sensor provided is what determines the cooling or heating. When it senses the
set temperature is reached, the unit will pause heating or cooling, until the temperature change
is sufficient to cause it to continue.
Ideally, you will use this unit with an Apollo Conical Fermenter or similar fermenter with a
thermowell for the temperature sensor probe. This allows the temperature inside the liquid to be
measured.
Alternatively, you can tape the sensor probe to the outside wall of the fermenter or keg,
however, this will not be quite so accurate.
Setting the Temperature and Other Settings
This is done via the STC-1000 Temperature Control Panel.
It should be preset to 18°C (64.4°F).
There are four settings that can be configured on the
STC-1000 temperature controller.
F1 is the temperature setting for the sensor to reach.
F2 is the hysteresis setting. Once the temperature set via F1 is achieved, the unit
pauses any heating or cooling.
The hysteresis value is the temperature difference threshold at which the unit resumes
heating or cooling. Setting this value too small will result in excessive heat / cool
cycling. Typically, 0.5°C (or 1°F) should work well.
Example: with a hysteresis value of 1° and a temperature setting of 5°, the unit will
reach 5° and then pause actively heating or cooling. If temperature rises by 1° above
5°, it will then start cooling until it reaches 5° again. Or if the temperature drops by 1°
below 5°, it will start heating until it reaches 5°.
F3 is a cooling delay setting which can be set to zero as the Thermentor King can
switch between cooling and heating without ill effects. If the unit has been actively
cooling and stops due to reaching the set temperature, it will not start cooling again
until the cooling delay is passed (and the temperature is above the set hysteresis
value).
F4 is a temperature calibration offset value. Set this value if you test the sensor in a
liquid with a known, validated (from an accurate thermometer) temperature, and the
STC-1000 reads a different temperature.
Set this value to the difference between the cabinet sensor reading and the validated
temperature

Thermentor King User Manual
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Keg King is a registered business name of MCH Australia Pty Ltd
To set any of the above settings:
If the unit does not have power supplied, connect it to power via the 12V DC Power Supply
Pack.
1.
If the Temperature Control Panel is off, press and hold the power button until it turns
on. You should hear the pump start up.
2.
Press and hold the “S” Setting button for 3 seconds or more.
The setting mode is active when indicated by the SET LED on the display.
The display will show F1, which indicates the temperature setting mode.
To set the temperature, go to step 4.
3.
Use the up and down arrow buttons to change the “F” setting that you need to
change.
(F1, F2, F3, F4 as detailed above)
4.
Press and hold the “S” button again to activate the function setting mode
5.
While continuing to hold the “S” button, use the up and down arrow buttons to set the
desired value.
6.
Press the power button to save the set value.

Thermentor King User Manual
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Keg King is a registered business name of MCH Australia Pty Ltd
Troubleshooting
Issue
Remedy
Coolant is frozen & not flowing.
Or coolant is flowing too slowly.
Set the temperature to 20C and it should unfreeze within a
few minutes. If it does not, there is another issue.