Helo HNS-M2, Product Manual

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General
HNS-M2 steam generators are only intended for use in heating spa facilities. Using steam generators in other areas
than steam rooms can damage the building's structure.
The manufacturer is not responsible for damages caused if the unit has been used incorrectly or in a manner for
which the unit was not designed for.
Water and steam pipe connections must be made prior to connecting the unit into the mains.
Due care and attention must be taken when making the connections. Proper sealing must be ensured for all
extensions. A good extension must have at least taped over threaded connections, but it is recommended that
connections are soldered.
Ventilation
It is not normally necessary to arrange ventilation for steam saunas that are used for less than two hours. steam
rooms that are used for more than two hours at a time need ventilation for functional and hygienic reasons. The
ventilation recommendation is 10 to 20 m
3
per person per hour.
If there is an empty space above the ceiling of the steam room, it must not be completely sealed off. Make at least
one ventilation hole (100 mm x 100 mm) into the empty space, on the same wall with the door.
The
Supply air valve may be a hole in the bottom part of the wall with the door or a gap under the door.
The Exhaust valve is placed in the ceiling or on a wall near the ceiling as far from the supply air valve as possible,
however not above the door or the seats. The exhaust valve is connected to an air conditioning channel going
outside
Forced ventilation. If natural ventilation is not adequate (e.g. negative pressure in the room where the fresh air is
taken from), the steam room must be equipped with forced ventilation. Its output must be equivalent of 10 to20 m³ of
ventilation per person per hour.
Testing the water before using the steam generator.
The test packet that comes with the steamer includes test slips, which can be used for testing the water hardness
number as follows:
Dip the test slip in water for about 1 second, take it out and shake off the excess water. After a minute, compare the
colour code appearing on the test slip with the code key in the packet.
Test result:

3

dH, Very soft water.

4

dH, Soft water, Installing the decalcification device recommended

7

dH, Medium-hard water, Install decalcification device and retest the water hardness.

14

dH, Hard water, Install decalcification device and retest the water hardness.

21

dH, Very hard water, Install decalcification device and retest the water hardness.
See page 9 for steam generator's operation time in hours before decalcification
The steam generator must be placed away from water and moisture (dry room). The room must be well ventilated as
the unit also produces heat. The maximum temperature of the room must not exceed 35°C. Recommended minimum
free space to sides and above the steamer is 30 cm. Adequate space for maintenance should also be planned for in
the placement of the unit. There should be a drain nearby for draining the tank.
The steam generator can be installed freestanding on the floor or on the wall using wall fittings. When using wall
fittings, ensure you use appropriate fittings and screws for the type of construction material of your walls. The steam
generator weighs about 17 kg when filled with water.
When the automatic drain valve is used, it is recommended you use wall installation so an adequate angle can be
ensured for draining of water.
User and installation manual HNS
–M2
4