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The HELO HSS M and HST M Steam Generators are designed exclusively for use in steam bathing facilities. Any other use is not permitted, and the manufacturer is not responsible for damage resulting from incorrect installation or use, or any consequential loss.
These steam generators provide steam for steam rooms, offering both automatic and manual control options. The core function involves heating water to produce steam, which is then delivered to the steam room. The generators feature an automatic fill and water level setting, ensuring continuous operation without manual intervention. An automatic draining and rinse program is also available, particularly with the optional Drain Kit M, which helps maintain the internal components and reduce scale build-up. The control module allows users to set the desired temperature and bathing time, while a separate push button offers a simpler, fixed-duration operation.
The generators operate on a voltage of 400V-415V 3N~ 50Hz (or 230V-240V 1N~ for lower power options). Power options range from 3.4kW to 14kW. The protection class is IP 20. The water tank is constructed from AISI 304 steel.
Dimensions:
Weight (filled with water):
Electrical Connections: The steam generator is semi-permanently connected to the electricity mains, and all electrical connections must be completed by a qualified electrician, adhering to local regulations.
The required power for a steam room can be estimated using the formula: Capacity (m³) x K1 x K2 = Required power (kW).
Water and Steam Connection: A 3/4" flexible water pipe connects to the cold water supply, requiring a pressure between 0.2 and 10 bar. A stop valve is essential for isolation during maintenance or extended non-use. The steam pipe connection should use at least 18x16mm copper or silicone pipe for 3.4kW-9.5kW generators, and 22x20mm for 12.0kW-14.0kW generators. The steam pipe diameter must be constant throughout and should rise or fall on a steady gradient, avoiding traps that could restrict steam flow or cause spitting. Condensation must flow freely back into the steamer or into the steam room. If an essence pump is fitted, pipes must have a downward gradient from the generator to prevent chemicals from reaching the tank. The maximum steam pipe length is 5 meters and must be fully insulated for safety and to minimize condensation. Hot steam can cause burn injuries.
Control Module (MIDI Control Module): The digital control module can be floor or wall mounted, and can be fitted either inside or outside the steam room. If fitted outside or too low inside, a separate thermostat connected to the circuit board must be used, mounted at 170cm from floor level, preferably opposite the door.
Push Button Control: An alternative control option, the push button, starts the generator for a fixed 30-minute cycle. An LED above the button indicates operation. The generator stops automatically after 30 minutes or can be stopped manually by pressing the button again. When using the push button, a separate limiting thermostat must always be installed to ensure the temperature does not exceed 50 °C.
Two-Stage Control: The heat elements have a two-stage control (not for 230V 3~p). When the set temperature (e.g., 43 °C) is reached, two elements turn off, leaving one element connected via a relay-switch to maintain a steady temperature and continuous steam production. If the temperature drops by 1 °C, all elements switch back on. If it rises by 1 °C above the set point, all elements switch off. In the pressure button version, if the thermostat detects 50 °C, two elements switch off. If the temperature drops by 1 °C, all elements switch on. If it rises above 50 °C, all elements switch off.
Steam Nozzle(s): Must be fitted approximately 20-40 cm from the floor, either under a seat or on the wall, positioned to prevent direct contact with hot steam (100 °C) and potential burns.
Flushing and Rinse: The generator should be emptied after each use, preferably while the water is still hot, to prevent chalk and scale build-up on internal components. An 18/16mm copper or heat-resistant silicone pipe (approx. 14-16mm internal diameter) should connect the flushing valve to the floor drain.
Electric Flushing Vent (Drain Kit M - Optional Extra): This kit provides an automatic flushing and rinsing function. 15 minutes after shutdown, the electric flushing valve opens. Once the tank is empty, the generator refills with cold water and flushes again. This cycle repeats, ensuring thorough rinsing. In the pressure button version, the LED flashes every second during the 15-minute waiting time before flush and rinse. The generator must be installed higher than the floor drain for gravity-based drainage.
Descaling: An optional Descaling Kit facilitates adding citric acid solution to the tank. The process involves:
Water Quality Testing and Descaling Intervals: Test strips are provided to determine water hardness and recommend descaling frequency:
Professional Use: For generators in daily use (5+ hours), a service plan is recommended at least twice a year. This includes checking elements, water level sensor, and the tank for lime-scale build-up. Damaged parts should be replaced, and the tank can be cleaned after removing elements.
Alarms:
Warranty: The warranty is void if installation or use does not comply with these instructions. It also excludes functional problems caused by hard or impure water. The steam generator must be serviced as instructed in the user manual.
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