HUUM UKU WiFi-LOCAL Control System Electric Sauna Heater User Manual

HUUM UKU WiFi-LOCAL Control System Electric Sauna Heater

The devices set includes:

• UKU control panel;
• Main module (6.89 x 9.84 x 2.95 inch/175 x 250 x 75 mm);
• Temperature sensor;
• Door sensor;
• Temperature and door sensor cables (197+197 in/5+5 m; 2×28 AWG);
• UKU control panel cable (118 in/3 m; 4×22 AWG).

BEFORE INSTALLATION

• Before installation, read the operation manual thoroughly. This way, you can use all the benefits of the device and prevent damage.
• Only an electrician or a person with equal qualifications may install the device.
• Installation and maintenance of the device are only allowed when it is not under voltage.
• For unique problems that are not covered in the installation manual, contact your vendor to ensure safety.
• It is not permitted to alter or rebuild the control device without authorization.
• The manufacturer has the right to make improvements to the device. The latest version of the operation manual can be found on the webpage www.huumsauna.com.
• Make sure that the building’s cables from the main switchboard to the sauna’s desired location have sufficient cross-section. In case of an older building, pay attention to the condition of the connecting boxes and, if possible, install a new cable from the switchboard to the sauna. Install separate protection for the heater.
• It is recommended to connect the device to the mains without a residual-current device (RCD).The
• UKU control system allows the sauna temperature to be set between 40 and 110°C / 104-230°F.

Symbols used in the installation manual:

WARNING! Not following these instructions may lead to serious or fatal injuries. CAUTION! Not following these instructions may lead to minor to semi-serious injuries or cause damage to objects. ATTENTION! Also, follow the special safety requirements given in the individual chapters. Dispose of the packaging material according to the applicable disposal rules and regulations. In the guide, the following details of the sauna are marked with numbers:

• UKU control panel
• Main module
• Door sensor
• Temperature sensor
• Heater (not included)
• Vaporizer (not included)
• Light (not included)
• Humidity sensor (not included)

INSTALLING UKU ELECTRICAL CONTROL DEVICE

• Before installation, disconnect the electric heater from the power supply in the switchboard.
• The control panel 1 must be installed outside the steam room, at the user’s eye level, next to the door.
• If your main module 2 supports the use of the WiFi connection, it must be installed where sufficient reception is available.
• The main module must be installed in a dry place. The protection degree of the device is IPX4. The power cables must be anchored via the provided cable gland.
• To prevent damage to the main module, a room temperature of 104°F (40°C) and relative humidity of 95% must not be exceeded.
• Before powering the control panel, it must be ensured that the main module is sealed so that no humidity can access the inside.

CAUTION! The main module must be connected to the mains permanently without plugs. A method to disconnect all poles from the mains (a circuit breaker) must be installed. The power cables of the heater controller must meet the requirements of UL 62 in the US and CSA 49 in Canada – the minimum temperature rating of 140 °F (60°C). The cables’ cross-section depends on the power of the heater. See the heater manual. Our recommended wire size for controller power cable: 10 AWG for 4.5 kW and 6 kW heaters, 8 AWG for 7.5 kW and 9 kW heaters, 6 AWG for 10.6 kW and 11 kW, 10 AWG for 12 kW heaters (double-wire), 8 AWG for 15 and 18 kW heaters (double-wire). Always let the correct cable size be approved and installed by a qualified electrician.

CONTROL PANEL

WARNING! To avoid over-threading the screw threads, tighten the screws only by hand. Do not use electric screwdrivers.

• The cable of the control panel should not exceed 20 m / 65 ft.
• The cable of the control panel should not be routed parallel to the high-current cables.

Control panel with glass case

The control panel with a glass case is recessed into the wall. Before installation, make a recess in the wall with dimensions of 2,5x4x1,1 in (65 x 105 x 27 mm) in the desired place.

Installation steps:

• Remove the protective film from the glass and the control panel button.
• Remove the glass. The glass is fixed with magnets.
• Connect the cable following the numbering.
• Choose fasteners according to the material of the wall.
• Attach the control panel to the wall.
• Carefully place the glass back on the control panel housing.
• Install the button.

ATTENTION! If the wall where you install the glass control panel has conductive materials (for example, metal insulation) that may come into contact with the screws fixing the cables on the back cover of the panel, cover the screw heads with insulating tape to prevent an electrical short.

In sauna rooms, where the recessing of the control panel is not possible due to construction or surface finish, it can be attached to the wall using the control panel mounting frame. The mounting frame is an additional product that you can ask your HUUM distributor.

Control panel with wooden case

• Remove the back cover of the UKU control panel to attach it to the wall.
• Attach the back cover to the wall so that the upper edge of the control panel is at eye level.
• Connect the power cable to the screw terminal of the device.
• Attach the device to the back cover that has been placed on the wall. Secure it with screws from the sides.

Control panel with plastic case

• Connect the cable following the numbering.
• The mounting screw holes are hidden under the control panel button. Remove the button by gently pulling it.
• Fix the control panel to the wall with screws.
• Reinstall the button.

MAIN MODULE

• We recommend installing the main module outside the steam room. Choose a place where access to the main module is guaranteed. Take photos of the connections and the label on the cover.
• If it is still necessary to place the main module in the steam room, attach it to the wall at the maximum height of 4 in (10 cm) from the floor and at least 59 in (150 cm) from the heater. It is important that the temperature of the working environment of the device does not rise above 122°F (50°C).
• Do not attach the main module to the ceiling or inclined surfaces.
• The screw holes for fixing the main module to the wall are located under the fixing screws of the device cover.
• Fix the main module on the wall with 4 screws in an upright position with the cable openings facing downwards.
• Connect the cables of the UKU control panel, temperature sensor, and door switch through cable glands to the enclosure and main module, see figure.
• Connect the power cable (240V 2(N)\~) of the control panel through the cable glands to the main module, see figure.

WARNING! If the cable glands are not used, the IP class of the device does not apply!

DOOR SENSOR

The door sensor kit includes a sensor, magnet, and magnet fixing tape.

• The length of the cable between the sensor and the main module should not exceed 32 ft (10 m).
• Install the sensor on the handle side of the door frame, at a maximum height of 15.8 in (40 cm) from the floor. When installed higher temperature, the temperature may affect the performance of the magnet and the durability of the magnet tape.
• It is important to ensure that the door passes directly by the sensor in the door.
• Use a 13/64 in (5 mm) diameter drill when installing a door sensor recessed in the door frame.
• Drill a hole and install the sensor.
• Connect the cable to terminals O1 and O2 in the main module. Connect the other end of the cable to the cables attached to the door sensor.
• Install the door sensor magnet to the door leaf using the tape attached to it.
• When closing the door, the sensor and the magnet should remain slightly displaced, and the distance between them should not exceed 0.4 in (10 mm).

TEMPERATURE SENSOR WITH OVERHEATING PROTECTION

• The length of the cable between the temperature sensor and the main module should not exceed 32 ft (10 m).
  NB! The temperature sensor should not be located above the heater, but at least 19.7 in (50 cm) from the outer edge of the heater.
• The temperature sensor must be 5.9-7.9 in (15-20 cm) from the ceiling.
• The temperature sensor must be at least 19.7 in (50 cm) from the corners of the steam room and air openings (ventilation, door, window).
• Connect the cable to the temperature sensor’s screw connectors, as shown in the figure.
• The temperature sensor consists of the rear and first case halves. Attach the back side to the wall with two screws. Make sure it goes straight to the wall.
• Install the first half as shown in the figure on the right.

STEAMER

• The maximum power of the steamer is 625W, 120V/60Hz.
• Connect SL (phase) SN (neutral) to the outputs of the steamer. To connect, see the figure.
• After connecting the steamer, turn on the steamer function in the control panel settings. See the “Humidity settings” section of the operation manual, page 16.

ATTENTION! When connecting the control system with an electrical heater with a steamer function, ensure that the water tank is always filled with water. When the water tank is empty, the steamer function is disabled, and there is a risk that the heating element may burn out.

VENTILATION DEVICE / LAMP

• It is possible to connect a lamp or a ventilation device to the outputs LL (phase), LN (neutral) of the main module. To connect, see the figure.
• The maximum power of an incandescent lamp/ventilation device is 120V 100W, and with LED lights, 120V 50W.
• After connecting the device, turn on the “Vent/Lamp” function in the control panel settings. See the corresponding section on page 14 in the operation manual.
• If the lamp or ventilation device is connected and the corresponding function is active in the menu, you can turn the connected device on and off using the control panel.

HUMIDITY SENSOR

• An accessory that is not part of the basic set.
• The humidity sensor measures the humidity level in the sauna. The value is displayed on the control panel.
• If a steamer is in use in the sauna’s steam room, the humidity sensor enables checking its operation and controlling the humidity level of the sauna as desired.

ATTENTION! The law states that when using a humidification device in a sauna without a humidity sensor, the maximum allowed target temperature of the steam room is 158°F (70°C).

Connecting the UKU WiFi controller to the network

• The WiFi modem complies with the 802.11 b/g/n standard.
• The main module supports only 2.4 GHz WiFi networks.
• The connection will fail if your 5 GHz or 6 GHz network has the same name as the 2.4 GHz one. ATTENTION! The main module doesn’t support WiFi network names and passwords longer than 20 characters.
• To enter the control panel menu settings, hold down the panel button for 6 seconds.
• Go to “WiFi settings” and select “SSID” from there. You can confirm the options by clicking on the button.
• In the opened menu, find the WiFi network to which you want to connect your sauna control system.
• If you have selected a WiFi network, enter the password of the WiFi network.
• After entering the password, click connect and follow the instructions on the screen.
• In the operation manual, information on connecting the sauna to the mobile application has been provided in the chapter “HUUM mobile application” on page 11.

HUUM mobile application

The UKU WiFi device can also be controlled by a smartphone with a special HUUM mobile application in addition to the control panel. This way, you can put the sauna to work while being far from home. Download the HUUM application from the application page of your mobile phone’s operating system:

• IOS – App Store
• Android – Google Play
• Create a user account in the application.
• Connect the control system ID (2XXXXX) with your user account. The ID of the control system is also the ID of your sauna; you can find it on the sticker located in the upper right corner of the main module cover.
• Check whether the functions of the mobile application (e.g., selection of sauna temperature and heating time, heating on and off) work and reach the sauna. The function should start within 60 seconds of selecting the command in the menu. In case the functions of the mobile application are not activated, contact us: [email protected].
• The number of user accounts linked to one sauna is not limited.

How to add WiFi capability to your UKU Local control system?

If you have purchased the UKU Local control system, but want to add WiFi capability to it, you can do so in the HUUM mobile application. The upgrade does not require calling a technician but is activated remotely for an additional fee.

• To do this, download the HUUM mobile application, create a user account, and link it to your sauna ID (see the previous section “HUUM mobile application”).
• You can get further instructions from the mobile application.

TESTING

ATTENTION! Only a certified electrician can carry out the tests! WARNING! Tests must be carried out while the power is on. Risk of electric shock! WARNING! Before starting the test, check that the heater is installed according to the manufacturer’s instructions.

• Check the power terminals of the circuit breaker and the main module. Bad connections may cause a fire. Switch the power on from the switchboard by using the circuit breaker. The screen will flash for a moment. The device is ready for use.
• Check the door sensor: Close the steam room door. Turn on the controller and set the temperature. Turn on the heating. The heater starts heating, and the heating elements start glowing red. The relays should activate. Open the steam room door. The relays should disconnect within 5-10 seconds, and the message “Door open” appears on the screen. Close the door. The relays activate again, the message disappears, and heating continues.
• Check the temperature sensor. If the error message “Temperature sensor error!” is displayed on the screen of the control panel, check the temperature sensor cable connections on both the sensor side and the main module side. If the message does not disappear, contact the distributor of HUUM products.
• In other cases, to test, turn off the circuit breaker of the sauna for a minute and then turn it back on. The control panel should switch off and display the current temperature when switched on.
• Adjust the target temperature of the sauna to 50°C (122°F). Turn on the sauna. If the control panel indicates that the sauna has reached the desired temperature, make sure that after 30 minutes that the desired temperature remains noticeably the same. Turn off the heating.

CONTROL PANEL USER MANUAL

• Before use, make sure that you have made the necessary connections according to your control system model (see “Connecting UKU WiFi control system to the network” on page 11).
• A short single press of the button turns the control panel on and starts or stops the heating. The display remains active throughout the heating period.
• You can set the maximum possible heating time of the heater in the menu of the control panel on the wall. In case of private saunas, the choice of heating time is 3 or 6 hours, in case of semi-public saunas, 12 hours, and in case of public saunas, 18 hours. By using the mobile application, you can choose the heating time yourself, but its length cannot exceed the settings of the control panel.
• The current sauna temperature is displayed in the middle of the screen.
• The target sauna temperature is indicated by a number in the upper right corner of the screen. Turn the knob to select the target temperature.
• Press the button to start heating. During heating, the heating symbol is displayed above the temperature on the screen  .
• To enter the control panel settings menu, hold down the button for 6 seconds.
• Select “Back” for each function to exit the menu.

Control panel settings menu

The following parameters can be set in the menu:

WiFi settings 

changing WiFi settings, selecting a suitable network, and connecting to it.

• Press and hold the button for 6 seconds to enter the control panel settings menu.
• Go to the “WiFi settings” option. The necessary steps for selecting the WiFi network and establishing the connection have been described in the section “Connecting UKU WiFi control system to the network” on page 11.

Lamp settings 

settings for controlling devices connected to the control system (e.g., ventilation, sauna lamp).

Vent/Lamp

• To control devices connected to the control system from the control panel, this function should be turned on (On).
• Press the button for 6 seconds to enter the menu.
• Find the “Lamp: On/off” function in the menu and make the choice that suits you.
• If the function is active, you can turn the relevant device on or off with two quick button presses using the control panel.

Door switch

If the function is activated, the device connected to the control system (e.g., ventilation, sauna lamp) turns on automatically for a user-defined time period of 10, 15, or 20 minutes when the sauna door is opened.

• Press the button for 6 seconds to enter the menu.
• Find the “Door switch” function in the menu and choose a suitable period of 10, 15, or 20 minutes.

WARRANTY

General:

• The warranty only applies to the products that have been installed and used in accordance with the operation manual.
• The length of the warranty period is 5 years from the moment of purchase (on the basis of the purchase receipt).
• The warranty does not cover the defects caused by normal wear and tear or improper use of the product.
• The warranty does not extend to the temperature sensor, which is considered an expendable part.
• The warranty only covers the replacement or repairs of defective parts and does not extend to other direct and/or indirect expenses (e.g., transport, electrician costs) and/or damage caused due to a defect or failure of the product.

The warranty does not apply to the defects caused by the following reasons:

• defects caused by transport and other accidental damage;
• defects caused by careless or unintended storage, use of the product, or overloading;
• modifications made to the product;
• use of replacement parts that are not approved by the manufacturer (e.g., temperature sensor);
• use of products that are incompatible with the device;
• The product is not complete.
• The product’s warranty period has expired.

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HUUM UKU WiFi-LOCAL Control System Electric Sauna Heater-FAQs