Fermenter Setup
G20 Glycol Chiller | Fermenter Setup
Once the G20 has been setup and tested, and is filled with a glycol solution of the appropriate ratio, we are ready to attach the lines to the fermenter(s)
Typical Fermenter Setup | KL47340 JoinTech G20
IMPORTANT: Prior to connecting the G20 to the fermenter ensure that the temperature of the liquid in the fermenter is below 50°C. The G20 is not designed to cool from boiling to 50°C and instead normal tap water should be recirculated through the cooling coils first to drop the temperature of the liquid
KL47340 JoinTech G20 has KL41096 JoinTech Male Connector with Auto Shut Off fittings as standard. This works in conjunction with KL41102 JoinTech 13mm Barb x Female Connector with Auto Shut Off
The 13mm barb on the female JoinTech fitting is ideally suited for KL40587 Red Glycol Insulation Hose - 2m Roll x 12mm ID x 16mm OD - Foam 15mm Thick and KL40570 Blue Glycol Insulation Hose 2m Roll x 12mm ID x 16mm OD - Foam 15mm Thick
It is recommended to secure the insulated glycol tubing to the JoinTech barb using KL06729 Bag of 20 x 18.5mm S.S. Stepless Clamps(suit 16-18mm OD) as illustrated
For best performance, insulate the hosing between the G20 (if not using pre-insulated tubing as above) and the fermenter and try and minimise the distance between the Glycol Chiller and fermenter(s)
Before connecting the Glycol Chiller to the fermenter ensure that the liquid in the fermenter is below 50°C. The Glycol Chiller is not designed to cool liquids above 50°C so the liquid in the fermenter must be cooled below 50°C before the Glycol Chiller is connected
Connect a suitable length of 12mm ID tubing for your application to the desired outlet (OUT) port on the G20 using JoinTech fittings
Connect the tubing to the cooling coil or jacket inlet on your fermenter
Run a length of 12mm ID tubing from the coil or jacket outlet back into the inlet (IN) adjacent to the outlet chosen on the G20 using JoinTech fittings
Insert the temperature probe into the thermowell of the fermenter being controlled. If there is no thermowell, tape and insulate the temperature probe to the side of the fermenter
Set the temperature on the temperature controller to the set temperature of fermentation
Set the temperature on the temperature controller for the reservoir to between -2° and -6°C if using glycol. Do not set this to a temperature lower than recommended according to this table. If you are only using water in the reservoir and not glycol then do not set the temperature of the reservoir to below 2°C
Typical Fermenter Setup | G20 KL16049
The Glycol Chiller has 10mm barbs as standard, suited to KL18142 10x15mm Heavy Duty Silicone Tubing
IMPORTANT: Prior to connecting the G20 to the fermenter ensure that the temperature of the liquid in the fermenter is below 50°C. The G20 is not designed to cool from boiling to 50°C and instead normal tap water should be recirculated through the cooling coils first to drop the temperature of the liquid
The Glycol Chiller has 10mm barbs as standard, suited to KL18142 10x15mm Heavy Duty Silicone Tubing
For best performance, insulate the hosing between the G20 and the fermenter and try and minimise the distance between the Glycol Chiller and fermenter(s)
Before connecting the Glycol Chiller to the fermenter ensure that the liquid in the fermenter is below 50°C. The Glycol Chiller is not designed to cool liquids above 50°C so the liquid in the fermenter must be cooled below 50°C before the Glycol Chiller is connected
Connect a suitable length of 10mm ID silicone tubing for your application to the desired outlet (OUT) port on the G20
Connect the silicone tubing to the cooling coil or jacket inlet on your fermenter
Run a length of 10mm ID silicone tubing from the coil or jacket outlet back into the inlet (IN) adjacent to the outlet chosen on the G20
Insert the temperature probe into the thermowell of the fermenter being controlled. If there is no thermowell, tape and insulate the temperature probe to the side of the fermenter
Set the temperature on the temperature controller to the set temperature of fermentation
Set the temperature on the temperature controller for the reservoir to between -2° and -6°C if using glycol. Do not set this to a temperature lower than recommended according to this table. If you are only using water in the reservoir and not glycol then do not set the temperature of the reservoir to below 2°C
NOTE: When under load such as when cooling a fermenter it can take a longer time than the cooling factor you have measured to cool the reservoir down to the set temperature This time is dependent on a number of variables including but not limited to:
Jacketing of the fermenter (jacketed or non-jacketed)
Number of fermenters being cooled
Ambient temperature
Heat ingress
Line legth and type
Insulation of the system
An ideal setup would include some or all of the following features.
Short runs of line to/from the G20 and the fermenter
Insulation of the lines
Insulation of the fermenter
Gycol rather than water (to allow the reservoir temperature to drop below 0°C)
Controlled ambient temperature
G20 and fermenter out of direct sunlight
Cooling fermenters a large distance from the G20
The G20 is capable of cooling 200L jacketed fermenters. However, if your fermenter is a large distance away from the G20 then the submersible pumps may not be able to handle this increased resistance. Hence, it is suggested for fermenters at a distance that an external pump be used to transfer the glycol to the fermenter.
It is also important that thermal losses in the system are minimised as much as possible by insulation of all parts of the system.
Connect an external pump to an external temperature controller
Remove the retaining clip and 3/8” plug from the bottom duotight fitting on the nylon sight tube. Attach 9.5mm (3/8”) EVABarrier tubing (KL06248) to the duotight fitting and connect this tubing to your external pump
Attach tubing to the outlet of the external pump and attach this tube to the cooling coils or jacket on your fermenter
Run tubing from the outlet of the fermenter cooling coils back into the reservoir of the G20
Set the temperature on the temperature controller for the reservoir to between -2° and -6°C if using glycol. Do not set this to a temperature lower than recommended according to this table. If you are only using water in the reservoir and not glycol then do not set the temperature of the reservoir to below 2°C. For long runs using a glycol mixture is strongly recommended
Insert the temperature probe of the external temperature controller into the thermowell on your fermenter
Set the temperature on your external temperature controller to your desired fermentation temperature. This will cycle the pump on and off to supply cold glycol solution only when the temperature of the fermenter increases above the set fermentation temperature
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