The Icemaster G20 is an efficient glycol chiller that has fantastic cooling performance.

It is compact, quiet and ideal for a domestic environment. It is powerful enough to chill well-insulated fermenters up to 200L in size or multiple smaller fermenters.

The G20 has 500watts of cooling power making it suitable for crash chilling even in hot ambient temperatures in your garage or brewery.

Specifications

• Refrigerant: r600a isobutane

• Cooling Power: 190watts (0.25hp) (Rated at 22C)

• Power Consumption: 110w

• Tank: 16.42L

• Max Head (per pump): 5meter

• Max Flow (per pump): 600L/Hr

• Output Barb Size (KL16049): To suit 10mm ID tube

• Output Barbs (KL47364): Dry Break JoinTech 1/2" Male Fittings ~ Requires Dry Break Female JoinTechs for hosing (13mm ID)

• Dimensions: 510mm x 300mm x 460mm (L x W x H)

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)

1. 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

2. Connect a suitable length of 12mm ID tubing for your application to the desired outlet (OUT) port on the G20 using JoinTech fittings

3. Connect the tubing to the cooling coil or jacket inlet on your fermenter

The Glycol Chiller has 10mm barbs as standard, suited to KL18142

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

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)

1. 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

2. Connect a suitable length of 10mm ID silicone tubing for your application to the desired outlet (OUT) port on the G20

3. Connect the silicone tubing to the cooling coil or jacket inlet on your fermenter

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

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)

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.

1. Connect an external pump to an external temperature controller

2. 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

3. Attach tubing to the outlet of the external pump and attach this tube to the cooling coils or jacket on your fermenter

WARNING

All electrical works must be carried out or inspected by a licensed electrician

Each Temperature Controller has a Heating Relay as standard. This allows a heating device to be wired directly to the Temperature Controller so that it can be turned on or off by the controller.

This work must be performed by a licensed electrician.

The heating relay is rated to 240V

1. Unplug the power source for the heating device and the Glycol Chiller

2. Locate and cut the active wire to your heating device (see diagram). Most active wires are brown or red but this should be double checked with an electrician.

3. Divert the active wire into the blade connects (terminals 4 and 5 shown below)
4. Plug both the Glycol Chiller and heating device into mains power

NOTE: This is the same process for each temperature controller. So repeat this step to wire multiple controllers in the same way

KegLand is not liable for electrical work not performed by a licensed electrician

If Glycol Chiller has been moved/delivered do not turn it on unless it has been standing upright for at least 24 hours. Failure to do this will void warranty and may damage the unit. Leave the Glycol Chiller upright for at least 24 hours before plugging in mains power after receiving and unboxing

Ensure there is at least 100mm of clearance on each side of the Glycol Chiller to allow adequate airflow. Failure to allow adequate ventilation will reduce performance, increase power consumption and void warranty

This Glycol Chiller is not intended for cooling wort from boiling or temperatures above 50°C. Using the chiller to cool liquids above 50°C can overload the compressor and will void warranty

Do not run the pumps dry or allow the reservoir to ice over. Ensure the pumps are always submerged when in operation. Running the pumps dry or increased resistance due to ice formation can damage the pumps.

*NOTE: The display will illuminate if the up button is pushed whether or not the controller is turned on. If the display immediately goes off this indicates the controller is not turned on.

The cooling power of the Glycol Chiller is independent of the cooling power of the system - IE the system when connected to fermenter(s). For best results it is important to minimise thermal loss by insulating all lines and fermenters, running as short a line as possible, and ensuring inlets and outlets of cooling coils or jackets are correctly connected.

If the Glycol Chiller is not cooling as expected, or if it is not cooling to the current set point, this can indicate that the thermal losses in the system are too great for the Glycol Chiller to overcome.

To determine if this is an issue with the unit or if it is an issue with the setup it is important to test the cooling Power of the Glycol Chiller independently.

To do this, the Glycol Chiller must be isolated from the fermenters and tubing connecting to the fermenters. We want to only test the cooling power of the reservoir. To do this, remove any existing tubing and run a short length of 10mm ID tubing from the outlet and linlet of each pump as below:

When disconnected, fill the reservoir with fresh glycol solution or with water. NOTE: If using water do not set the reservoir temperature below 2° as this may cause freezing issues.

Make a note of the starting temperature - this will be the ambient temperature or thereabouts. Make a note of the time this reading is taken.

Set the reservoir to 0°C (if using glycol) or 2°C if using water.

Leave the Glycol Chiller to run, checking every 10 minutes to observe and note the temperature of the reservoir.

When the set point temperature has been reached, make a note of the total time taken to reach this temperature.

If the Glycol Chiller takes a long time to reach the set point temperature - in excess of 6 hours* then there may be an issue with the Glycol Chiller preventing it from cooling effectively - see Reservoir not reaching Set Point Temperature Troubleshootiing above.

*NOTE: This number is a guide only and external factors will play a part in performance.

If the set point temperature is reached in a reasonable timeframe then it is likely that any cooling issues are caused by thermal loss in the system. To combat this, reduce the line length, check that the inlet and outlet are the right way round and insulate the fermenter(s).

It is recommended to set the reservoir temperature to around -5°C when using glycol solution when crash cooling (for example)

Temperature Adjustment | Reservoir

The temperature of the reservoir is controlled by the STC-1000 controller at the rear of the G20.

Setting the reservoir temperature:

1. Locate the STC-1000 Temperature Controller

2. Hold the S Button until F1 is displayed

3. Press S Button again which will enter temperature adjustment mode

4. Then hold the S Button and Up or Down buttons simultaneously to adjust the set point temperature of the reservoir

5. Once the desired temperature has been entered, press and release the power key to save the parameter

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 . 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: Refer here for the full

For fermentation control, a glycol mix is greatly preferred as the cooling power of the G20 will be much higher than if used wit water alone. This is because the glycol lowers the freezing point so the reservoir can be set to -5°C or lower (depending on ambient, the water/glycol mix and other factors)

IMPORTANT: If you are only using water in the reservoir and not glycol then do not set the temperature of the reservoir below 2°C

The G20.1 includes temperature controllers on the front of the G20 which controls the switching on and off of the submersible pumps and can also be wired to control an external heating source.

To maintain the desired fermentation temperature, set the front controller(s) connected to the fermenter cooling coil or jacket to the desired set point temperature. Ensure the temperature probe for that controller is in a thermowell for the correct fermenter, or taped to the outside of the fermenter and insulated.

To adjust the parameters of the temperature controllers on the front of the G20 follow these steps

• The Cool Indicator flashes during startup delay

• The Cool Indicator illuminates when cooling is active

• The Heat Indicator* flashes during startup delay

• The Heat Indicator* illuminates when heating is active

Heating is not installed in the Glycol Chiller.

• Hold the Down button for 3 seconds to turn the controller on or off

• Hold the Up button for 3 seconds to display the current Set Point Temperature

1. The Set Point Temperature can be adjusted whether the controller is On or Off

2. Hold the ‘Up’ button for 3 seconds until the number on the display starts flashing (this number is the current set point temperature)

3. Press the ‘Down’ button to decrease the set temperature or press the ‘Up’ button to increase the set temperature

• If the unit emits an alarm, press any key to cancel the alarm

1. Hold the “Up” and “Down” buttons simultaneously for 3 seconds. The first menu code FO will appear on the display

2. Press the “Up” or “Down” buttons to cycle through the parameters F0-F13

3. Press both the “Up” and “Down” buttons simultaneously to alter the parameter which appears on the display

If there is no key operation within 5 seconds then the parameter will be set with the displayed value.

The parameters which can be modified are outlined below

To change any settings on the rear STC-1000 Temperature Controller please refer here for the full

If the glycol solution has been stored for an extended period of time then it is suggested to replace the solution, despite glycol having antimicrobial properties.

To replace the glycol empty the reservoir using the drainage port and then refill with the required concentration of glycol using a refractometer to confirm the concentration.

NOTE: It is recommended to drain and replace the gylcol solution every 12 months to avoid freezing issues, as glycol can break down and lose effectiveness over time

Clean out dust from the radiator periodically to maintain optimum efficiency