HUUM Sauna Heater FAQ's
What is unique about HUUM sauna heaters?
HUUM heaters’ minimalist and rounded design makes them some of the most elegant sauna heaters available. Thanks to an exceptionally high stone capacity they provide mild and long-lasting steam similar to traditional saunas. Little metal is used in the heaters, so the heat comes mainly from the stones and not from heated metal. This means there are more negative ions in the air, which are known to be beneficial for health. Using the heater together with a UKU Wi-Fi or GSM controller allows you to heat your sauna comfortably from your mobile phone.
What size sauna are HUUM heaters suitable for?
Among HUUM heaters you can find suitable models for both small and big sauna rooms with volumes ranging from 3 – 35 m³.
How do I choose a sauna heater with the correct power output?
Heater output should be chosen based on the sauna room size and insulation.
As a rule of thumb, you need 1 kW of power to heat 1 m³ of the sauna room.
If the heater is too small it will heat the sauna too slowly, it won’t provide enough steam and it might burn out quicker. However, a heater that is slightly too powerful won’t cause trouble if it has a thermostat and it is used correctly.
The second important thing to consider is how the sauna room is insulated. In case there are any uninsulated brick, tile, glass or log walls in the sauna room, an additional volume of 1.5 m³ for each m² of such wall should be added to the sauna room size calculation.
To calculate it yourself, multiply the height by the width and the length in meters. Then calculate the sum of uninsulated brick, tile, glass or log surfaces (m²), multiply it by 1.5 and add it to the previous result. As a result, you will have your sauna room volume in m³, based on which you can choose the suitable heater output. If the result falls between two different output values, we recommend choosing the bigger one.
How long does it take to heat the sauna with a HUUM heater?
If the heater is the right size, the heating speed is about 10 °C per approximately every 8 minutes, reaching 80 °C in one hour.
What kind of stones can be used with a HUUM Heater?
We recommend using natural and rounded sauna stove stones. In our selection, we have olivine diabase stones, which are light grey, rounded and with high heat capacity. Do not use decorative stones in the heater because they can easily break.
What material are HUUM heaters made of?
HUUM heaters are made of stainless steel. Read more about the production on the Craftsmanship page.
Where are the heaters produced?
All HUUM products are made in Estonia.
How long is the guarantee?
All HUUM sauna heaters have a guarantee of 5-years.
What is included with the HUUM Heater?
The set includes the heater and adjustable legs (HIVE) or wall mount (DROP). The set does not include: stones, controller, power cable.
Who can install the heater?
Only a certified electrician should install the cables and connect the heater to the power supply.
How can I replace my existing heater with a HUUM sauna heater?
Does your current sauna heater work with a controller or is it a mechanical heater?
If you have a sauna heater with a controller with a temperature control function, just replace the heater. Install the heater according to the product installation manual and with the help of a certified electrician.
Do you have a mechanical sauna heater without a controller (the switch is on the heater)? In that case, you will need a controller with temperature control function and you will need to set up some cables. Follow the instructions from the product installation manuals and do it with the help of a certified electrician. You might need to open up some walls and install new cables.
What kind of wiring will I need to install my HUUM sauna heater?
You will find the instructions for installing cables from our product installation manuals. Cables need to be installed by a certified electrician.
HUUM Sauna Controls FAQ's
What is the difference between UKU Local, UKU Wi-Fi an d UKU GSM controllers?
The only difference between UKU Local, UKU Wi-Fi and UKU GSM controllers concerns controlling the sauna from HUUM mobile app. With UKU Local you can control your sauna only from the control panel on the wall, but with UKU Wi-FI and UKU GSM you can heat your sauna from HUUM mobile app as well. UKU Wi-Fi controller needs a Wi-Fi connection for that and UKU GSM works with a SIM card and mobile data.
Can the HUUM heater be used without the controller?
No. HUUM heaters require a controller with temperature control. The heaters do not have an on/off button.
Which controllers can be used with HUUM heaters?
HUUM heaters work with different manufacturers’ controllers, provided that they are certified and have a temperature control function. The output of the heater has to match the output range determined by the manufacturer of the controller.
Can I use a HUUM controller with another manufacturer's heater?
Yes, if the heater works with a remote control and it has a temperature control function. If you have a mechanical heater, it is a lot more complicated and we do not recommend it.
What is included in the HUUM sauna controller set?
UKU controller comes with a complete set of all the parts
that are needed for installing and using it:
- control console (105 x 55 x 22 mm)
- control console cable (3 m; 4 x 0,34 mm² )
- main module (142 x 90 x 58 mm)
- temperature sensor
- door sensor
- temperature/door sensor cable (5 + 5m; 2 x 0,22 mm²)
Where should the HUUM sauna controller be installed?
The control panel must be installed outside the steam room at the user’s eye level next to the door or according to the manufacturer’s recommendations.
The main module should be installed in a dry place that is easy to access. We do not recommend installing the main module in the sauna room. Doing so will be at your own risk.
If you are planning to install UKU Wi-Fi or UKU GSM controller, it is important to make sure that the main module will be able to establish an internet connection in the chosen location.
What colours are available for the HUUM sauna controller?
You can choose between glass, wooden and different colored plastic cases. Wooden cases are handmade out of thermo-treated ash and each one has a unique wood pattern. Plastic cases come in black, white, metallic, light grey and golden colors.
HUUM Drop Installation
DROP installation video
Check Before Installation
1) Check if the power of the main fuse matches the parameters of the heater.
2) Does the output (kW) of the heater match the volume (m3) of the sauna room? In case there are any uninsulated brick, tile, glass or log walls in the sauna room, an additional volume of 1.5 m3 should be added to the sauna room for each square meter of such wall.
Positioning The Heater
- DROP heater should be positioned on the wall close enough to the sauna bench so that you can easily throw water on the stones from the
bench. The top layer of stones should be at the level of your feet when you are sitting on the sauna bench.
- Check Table 1 for minimal safety distances between the heater and the sauna room’s ceiling and walls.
- Pay attention to placing the heater in a way that prevents dangerous situations during its use.
- Make sure people do not have to pass it too closely when it is hot.
- Before installation remove the protective film from the steel plate behind the heater.
- When installing the wall mount, consider the full weight of 65 kg.
- Refer to our user manual for diagrams
Connecting the heater to the power supply
- Only a certified electrician is allowed to connect the heater to the power supply!
- The main cable input is located in the center of the heater, 10 cm above the lower edge.
- A rubber insulated SIHF-JB cable or an equivalent cable must be used as the connection cable. It is forbidden to use a non-heat-resistant cable with PVC isolation.
- The joint box must be waterproof and it must be located up to 50 cm from the floor.
- We recommend connecting the unit to the mains without an earth-leakage circuit breaker.
- Check Table 2 for the maximum current intensity in the cross-sectional area of the cable and circuit breaker.
- Refer to our user manual for diagrams
Stones
- DROP heater requires 55kg of 5-10cm stones ( 4 x 15kg boxes)
USER MANUAL
HUUM HIVE Installation
Check Before Installation
1) Check if the power of the main fuse matches the parameters of the heater.
2) Does the output (kW) of the heater match the volume (m3) of the sauna room? In case there are any uninsulated brick, tile, glass or log walls in the sauna room, an additional volume of 1.5 m3 should be added to the sauna room for each square meter of such wall.
Positioning the Heater
Check Table 1 for minimal safety distances between the heater and the sauna room’s ceiling and walls.
Pay attention to placing the heater in a way that prevents dangerous situations during its use. Make sure people do not have to pass it too closely when it is hot.
The inputs of the power cable are on the bottom cover of the heater.
Refer to our user manual for diagrams
Connecting the Heater to Power Supply
- Only a certified electrician is allowed to connect the heater to the power supply!
- A rubber insulated SIHF-JB cable or an equivalent must be used as the connection cable.
- NB! It is forbidden to use a non-heat-resistant cable with PVC isolation as the power cable.
- The joint box must be waterproof and it must be located up to 50 cm from the floor.
- We recommend connecting the unit to the mains without an earth leakage circuit breaker.
Refer to our user manual for diagrams
1) Open the cover of the heater’s electrical box.
2) Attach the power cable on the terminal block according to the circuit diagram.
3) Close the cover.
4) Fix the cable on the output with a cable strap.
Stones
HIVE requires 250 kg of 5-10 cm stones.
HIVE with an air tunnel requires 210 kg of 5-10 cm stones.
HIVE Mini requires 150 kg of 5-10 cm stones.
HIVE Mini with an air tunnel requires 110 kg of 5-10 cm stones.
USER MANUAL
Using The Heater
What is the correct way to pour water onto the HUUM Sauna Heater?
Pouring water onto the hot stones in the heater is how you can regulate the humidity in the sauna. To do this right, wait until the stones are hot enough to make the water evaporate. In order to prevent the stones from breaking you should use hot tap water. The water should be as clean as possible and you should avoid using very hard water or water that is high in iron. We recommend throwing approximately 250 ml of water at a time. If you need more steam, wait a few minutes and throw some more water on the stones. Doing so allows the stones to dry and regain the heat between pouring. If you notice water running out from the bottom of the heater, it means you have poured too much water or that the stones are not hot enough.
How often do the sauna stones need to be replaced?
It depends on how often do you use your sauna. If you use your sauna 3 times a week, you might need to replace the stones about once a year. If you use the sauna less, you probably should replace the stones every couple of years. To understand if the stones need changing you should check their condition once a year or after 300 hours of heating. Read more about it in the stones chapter.
Electric Sauna Heater Maintenance
1) Pay attention to your heater’s condition, especially if it has not been used for a while.
2) Check the condition of the stones once a year or after about
300 hours of use.
3) Clean the stones when necessary and replace them when they have started crumbling. Read more about it in the stones chapter.
4) When you are cleaning or working on your heater, make sure
the power supply is disconnected and the heater isn’t hot.
How often do the heating elements need to be changed?
Heating elements need to be changed only if they break.
Can I use my electric sauna heater if nay element is broken?
You can verify if heating elements are broken by removing some stones and checking if the heating elements turn red during heating. If a heating element doesn’t turn red, it is broken. When this happens, the broken heating element needs to be replaced immediately. Otherwise you risk breaking also the functioning ones. Only an authorized electrical engineer can change the heating elements.
Using The Controller
How to use the sauna controller?
1) To turn on the control panel, start or end the heating, press the button once briefly.
2) Go to the settings menu (press and hold the button for 10 seconds) to set the desired heating period. You can choose between heating times of 3, 6, 12 and 18 hours. By default, the heating period is set to hours.
3) To choose the temperature, just turn the knob. The number displayed in the upper right corner of the screen is the target temperature of the sauna. The current temperature is displayed in the center of the screen.
4) Press the button to start heating.
5) You can also use the timer to decide when do you want the sauna to start heating. To activate the timer function, press and hold the button for 3 seconds. Then, choose what time would you like the heating to
start and switch the timer on with a single short press on the button.
6) During heating, the screen is always active and a heating icon will appear above the temperature value.
7) The control console will turn off automatically after the heating or when you have stopped using the button without heating.
8) You can access other functions, such as vaporiser, lighting and child lock from the settings menu. To open the settings menu, press and hold the button for 10 seconds.
How to use the vaporiser function?
1) You can select the vaporiser function from the settings menu.
2) When the vaporiser function is selected, you can increase the steam output by pressing and holding the button and turning it to the right. To reduce steam output, press and hold the button and turn it to the left. In the lower left corner, the setting is shown from 1 to 10.
3) Heat intensity is displayed as an indicator in the lower left corner (from 1 to 10).
How to use the lighting function?
1) Hold the button down for 10 seconds to select the lighting
function from the settings menu.
2) When the lighting function is selected, you can turn the light on and off with two quick button presses.
How to use the Child Lock function?
1) The child lock can be turned on from the settings menu.
2) When activated, the child lock will automatically turn on when the screen of the control console turns off.
3) To activate the screen while the child lock is on, press and hold the button and turn it 30 degrees to the right, then 30 degrees to the left and then back.
Problems With HUUM Heaters & Controls
The Electric Sauna Heater Does Not Heat Up After Installation?
Are the heating elements working properly?
To find that out, remove some stones and check if the heating elements turn red while heating. If a heating element does not turn red it is broken and needs to be replaced before further using.
Is there a problem with wiring?
Before checking that, disconnect the heater from the power supply. Make sure that all the cables of the heater and the control console are connected to the main module according to the manual.
If you did not manage to solve the problem, contact us and send us a photo of the main module’s wiring.
What Happens When The Electric Sauna Heater Stops Heating Up?
Are the heating elements working properly?
To find that out, remove some stones and check if the heating elements turn red while heating. If a heating element does not turn red it is broken and needs to be replaced before further using.
1. Check if heater or control console cables have come loose.
2. Ask an electrician to check if all three phases are connected and actually reach the heater.
If the previous steps did not provide a solution, the problem may be in the main module. In that case, contact us and send us photos of the wiring of the heater and the main module.
Why Does My Electric Sauna Heater Heat Up Slowly?
Does your heater have sufficient output for the size of your
sauna room?
Check the product page.
Did you take the uninsulated and glass surfaces into account
when calculating sauna room volume?
Are the heating elements working properly?
To find that out, remove some stones and check if the heating elements turn red while heating. If a heating element does not turn red it is broken and needs to be replaced before further using.
Is there too much ventilation in the sauna room?
The Temperature Differs On The Control And Sauna Thermometer
Some difference in the measured temperature is considered normal because of the measurement uncertainties of the devices. If the
difference is more than 10-15 degrees you should check your temperature sensor and sauna thermometer.
1. Are the temperature sensor and sauna thermometer placed in
different parts of the sauna room where temperatures are actually very
different?
2. Is the temperature sensor too close to the heater? Too close
to the door? The best place to install it is on the opposite wall from the heater approximately 15 cm from the ceiling and away from ventilation tubes and windows.
3. Does your sauna thermometer work properly?
You probably need to replace your temperature sensor when even after fixing all the above-mentioned issues:
- the temperature difference is more than 20 degrees
- the temperature displayed on the remote control changes very
suddenly or keeps fluctuating
- the message “Sensor error” is displayed
There could be a problem with the cable connection.
Take down the sensor and try connecting it to the main module using another suitable cable. If the sensor works, you just need to replace the cable. If it still does not work, the sensor needs to be replaced.
In these cases, please contact us at support@huum.eu.
The Remote Control Display Does Not Turn On?
In most cases, this happens when the cables of the remote control are not connected correctly.
First, you should make sure that all the cables are connected to the main module according to the scheme in the installation manual. This should preferably be done by a certified electrician.
Also, check if any cables attached to the remote control have come loose. If after checking all the cables the remote control still doesn’t work, please contact us at support@huum.eu.
The Control Does Not Establish A Network Connection?
If your UKU GSM controller does not connect to the network after connecting your app user account to the controller, please contact us and send a photo of the log (Menu -> GSM status -> log).
If your UKU Wi-Fi controller does not connect to the network:
- Make sure you are using a 2.4GHz Wi-Fi network, instead of 5GHz.
- Make sure your different Wi-Fi networks don’t have the same
name and that the chosen network name is no longer than 20 characters.
If your Wi-Fi controller still does not connect to the network, take a picture of the error log displayed after pressing “Connect”, and e-mail it to us at support@huum.eu.
The Control Lost Its Network Connection?
Are you using the SIM card that arrived with the controller?
Contact us at support@huum.eu.
Are you using another SIM card?
- Check if the mobile data has run out.
- Find out if your service provider has changed the APN settings. If the APN settings have changed, update the settings also in the settings menu of the controller.
- Take the SIM card out and try if it works on your phone.
- If none of this helped, contact us at support@huum.eu.
How To Use The Mobile App
1.Download HUUM mobile app on your phone (or open HUUM web
application)
2. Sign up
Fill in the required fields and create an account.
3. Insert sauna ID and sauna code
You can find the ID number and the code number on the cover of the main module. UKU Wi-Fi will connect to the mobile app instantly if it is already connected to a Wi-Fi network. UKU GSM controller will establish a mobile data connection in 30 minutes.
4. Select heating time and temperature
The app allows you to set the desired temperature and the beginning and end time of the heating.
5. Your sauna is heating
You can check the sauna temperature in real-time from the app. A notification will let you know when the sauna is ready.
6. Keep your app updated
Make sure to update your app regularly so that it can function
well. We recommend switching on automatic updates.
Connecting UKU Wi-fi To App
To start using the mobile app with UKU Wi-Fi, you first need to connect your controller to a Wi-Fi network. UKU Wi-Fi controller supports 802.11 b / g / n 2.4 GHz Wi-Fi standard and cannot be used on a 5 GHz network. NB! UKU Wi-Fi sauna controller does not work with some Wi-Fi repeaters like ASUS Lyra.
1) Go to UKU control panel’s settings menu (hold the button
down for 10 seconds).
2) Go to “Wi-Fi settings”.
3) Go to “SSID” and select it.
4) Next, select the correct Wi-Fi network from the menu. Make sure your different Wi-Fi networks don’t have the same name, otherwise you may have problems connecting to the network.
5) After selecting the Wi-Fi network to enter the password. Make sure your Wi-Fi network name is no longer than 20 characters.
6) After entering the password click “Connect” and follow the instructions in the wizard.
7) When the Wi-Fi connection is established, follow the instructions in the How to use mobile app chapter.