User manual

Making the foundation

The foundation for hot tub has to be even and load-bearing. The easy way to place a hot tub is a good layer of stone chip and a few wooden logs put under. The more solid foundation is a platform made of wood or cast concrete. Avoid to place the hot tub directly on grass or soft ground. The vegetation from under the tub will prevent the underfloor from breathing, will keep moisture and promote faster rotting.


Pay attention to fire safety when planning the location of hot tub. Do not place the hot tub too close to buildings or other flammable structures to avoid the risk of fire. The owner of the hot tub is fully responsible for proper fire safety.

Ensure children’s safety in the tub and nearby. Keep the tub closed with lid when not in use. Bear in mind slippery at freezing temperatures. Do not use the tub alone. Do not overheat the water. The recommended water temperature is 37°- 40°C. Temperature should be lower for children and people with heart problems.

Water discharge

Bear in mind the waste water discharge when planning the location for hot tub. Hot tub holds up to 1500 litres of water which has to be drained out after use. The water drainage plug is mounted into the floor of hot tub, and can be connected to 40 mm pipe to guide the waste water. Do not leave the water drainage plug closed when hot tub is not in use to avoid collection of rain water, which can freeze in subzero temperatures. The water can only be drained after fire and embers in the heater have burnt out completely.

Water heating

Our heaters are made of stainless steel, while some components can be made of paint coated regular steel. Heaters are equipped with 200 cm long stainless steel smoke pipe made in two parts, capped with hat for rain protection. Heaters are constructed for use with fresh water only. Our warranty does not cover any potential damage caused of use of sea water or aggressive pool chemicals.

The difference between temperature of water and air often cause condensed water inside the heater. Therefore, the heater is not leaking although some water is visible in the furnace.

Wear protective gloves when operating a heater! Some parts might be hot during operation. Edges of the chimney and the heater might be sharp.

Note about the minimum fill! The heaters must never be lit when the tub is empty or not full! Heating a half-empty tub can lead to damaging the heater or fiberglass shell!

To start the fire, use fire starters and a dry wood in small pieces. To ensure fast heating use only a good quality and dry wood, preferably in smaller pieces. The use of low quality wood, or wood in large pieces may double the heating time. You can adjust the intense of wood burning by letting more air into the heater, or reducing the incoming air. Maintain the fire in the stove so that the wood will burn properly. If fire is too small, the heating time becomes remarkably longer. If fire is too strong, that may increase the risk of damage or accident.

Normal heating time is about 3 hour both with inside or outside heater. The actual heating time strongly depends on weather conditions, temperature of water, quality of firewood, proper and timely firing etc. To reduce the heating time, hot tub should be covered with a lid to keep the heat evaporation as low as possible.

Use of inside heater

The inside wood burning heater is our standard option for water heating. The inside heater is usually delivered ready mount, only the chimney has to be attached before use.

Before starting the fire, water has to be filled at least 20 cm from the top of the heater.

When lightening the heater make sure that the smoke goes to the right direction threw the exhaust pipe, and do not come back over the opening. To avoid that, you have to ensure that some warm air gets into the chimney pipe at the beginning, which then starts climbing up the pipe and building the right directed draught flow. The direction of the draught can be helped by blowing air to the heater’s opening at the beginning, or by burning a piece of paper in the upper part of the chimney, or by heating the chimney with a gas lamp. If you let the draught continue in the wrong direction, it can cause the damage of stove or fiberglass shell. This will not be covered by the warranty.

Use of outside heater

The outside heater is delivered disconnected, followed with hoses and connection clamps. If delivery is done by us, we will connect the pipes after delivery.

Before starting the fire, the hot tub with outside heater needs to be filled up at least 5 cm over the upper water circulation hose. It is strictly forbidden to connect any kind of water circulation pump or filter to the external heater. The construction of the heater cannot withstand the pressure, because it is planned only for natural hot and cold water circulation.

The hot tub with an outside heater can only be drained after all fire and embers have burnt out completely.

Do not leave the outside heater unheated / unattended in case there is a risk of subzero temperatures. Drain the water out of heater every time when heater is not in use. If the heater still got frozen, do not start the fire until the ice is melted out completely! Bring the heater into warm place and let the ice melt.

Water maintenance and hygiene

Clean the hot tub before use. Wash it carefully with soap and a soft fabric or sponge, and rinse with fresh water after. Do not use any abrasive material for cleaning. Take shower before bathing in the hot tub.

Before filling the tub with water check that the drainage plug is closed properly, and ensure that the plug is in place after you have some 10-20 cm of water in the tub. Do not start the fire until the tub is not full of water.

The water is layered when it heats up, and it has to be mixed so that the actual temperature could be found. The lid should be in place during heating, especially in cold and windy weather. The lid should always be placed off the ground when it is not in use, to avoid any impurities getting to the tub.

Do not leave the water unattended in case there is a risk of subzero temperatures. Frozen water can damage the tub and the heater, and that is not covered by our warranty. The drainage plug must be left open when tub is not in use, so that any water collected in the tub can be discharged and would not freeze.

The water in the tub is good only for 3-5 days depending on weather and overall hygiene. Only special chemicals and the water filter can keep the water clean and hygienic for longer period of time. Otherwise water has to be changed often. Be careful when using swimming pool chemicals in these small tubs. The dosages might be too high and can lead to the corrosion of materials.