SAUNAKESKUS Duetto User manual

Duetto
Electric sauna infrared emitter
Instructions for installation and use
Made in Finland

Instructions for installation and use Electric sauna infrared emitter
2
CONTENTS
Delivery includes 3
Technical details 3
Symbol explanations 3
Note before installation 4
Infrared heater controls
General safety precautions 4-5
The amount and use of infrared heaters 6
The need for infrared heaters 6
Example of installation 6-7
Placing an infrared heater 7
Infrared heaters for stove sauna 7
Joint use of infrared heaters and sauna stove 7
Adjusting the temperature 8
Placing the temperature sensor 8
Ventilation of an infrared sauna 8
Maintenance 8
Installing instructions 9
Installation 9
Installation distances 10
Electric wiring of infrared heaters 11
Shunt 11
Series 11
Guarantee 12
Manufacturer’s guarantee 12

Instructions for installation and use Electric sauna infrared emitter
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DELIVERY INCLUDES
(The right for changes is reserved)
Infrared heater for stove sauna
Mounting screws 4 pcs and covering plugs for screws 4 pcs
Instructions for use, care and installation
TECHNICAL DETAILS
IR B/C
Power 900W
Size K910xL310xP32mm
Glass color black or grey
Frame of wood
Wire 3m heat-resistant silicone
2x1, 5mm2
Protection grade IP 56 protected against dust and water jets
Certificates
Markings
Nominal voltage 230V –240V N1 50Hz
Wave length ~ 6,8 - 7,3 micrometers
SYMBOL EXPLANATIONS
Prompting symbol “Please read instructions for use, care and installation before installing
or using the equipment”
Prohibiting symbol ”The device must not be covered”
Duetto®infrared heater for stove sauna is certified
Infrasauna heater is marked
Unearthed electric device
Safety instructions
Do not touch the heater while it is switched on. The glass surface is hot and can cause
burns.
A broken device must be taken to retailer or recycling centre.

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Read instructions for use, care and installation through
in full before starting the installation and keep the
instructions for further use.
NOTE BEFORE INSTALLATION
Infrared heater controls
Duetto® -infrared heater can be used in the same space with a regular
sauna stove. Please note the included instructions for use, care and
installation. When adjusting the temperature, it is recommended to use a
separate control unit. Note that the control unit has its own, separate
instructions for use, care and installation and take them into account
when installing.
Alternatively, you can use a timer instead of the control unit. The timer
must have a bipolar cut-out, so the voltage can be cut out.
GENERAL SAFETY PRECAUTIONS
This appliance can be used by children aged from 8 years and above and
persons with reduced physical, sensory or mental capabilities or lack of
experience and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe way and understand
the hazards involved. Children shall not play with the appliance. Cleaning
and user maintenance shall not be made by children without supervision.
One must see a doctor to clarify the individual and health risks affiliated
to the use of an infrared heater. Infrared heater must not be used when
drunk or under sedative medication. It is recommended that the infrared
heater should not be used within 24 hours after sunbathing. If there is
any redness/change of color on the skin because of the infrared heater,
and it doesn’t clear within 24 hours, the infrared heater must not be used
again before the change of skin has been medically diagnosed harmless.
Children must be supervised that they do not play with the device.
Note: The whole back of the infrared heater must be mounted to
a solid base. The ventilation in the back of the heater must not be
blocked.
During cleaning the device must be disconnected.
Before turning the heaters on, make sure they are not covered
and that they are in good condition.
The electric wiring shall only be done by a legitimate electrician
or company.
Specifications given by the electric supplier must be followed (EVU) as
well as the appropriate VDE –specifications (DIN VDE 0100).

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INFRARED HEATER MUST NOT BE COVERED!
Covering it causes a hazard of fire.
Note danger of life:
Never carry out repairs yourself. The device shall only be opened at
the manufacturing factory.
The device shall only be controlled by a control unit or timer suitable for
controlling an infrared heater.
The heater can run continuously up to 6 hours at maximum.
Always make sure that there are no objects on top or close to the
infrared heaters before you switch on the heaters.
Check that the infrared heaters have turned off and no longer
emit heat after you have finished using the sauna.
The device must be disconnected from the electrical network while
installation or repair.
The manufacturer’s safety- and installation instructions must be
followed.
Take note of the sauna manufacturer’s specifications and instructions,
too.
NOTE!
Dear Customer
We want to emphasize already, that in the case of any warranty claims
an inspection log sheet / a copy of a bill of the Electricity Company or
electrician who carried out the work must be provided.
During cleaning the device must be disconnected.
Before turning the heaters on, make sure they are not covered
and that they are in good condition.

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THE QUANTITY AND USE OF INFRARED HEATERS
The heat that Duetto® -infrared heaters produce, makes you feel good. Placing the infrared
heater close to the bigger muscles of the body gives a maximum benefit of the heaters.
One infrared heater/person requires about 50cm space of the bench width all around it. The
heaters are placed on the wall mounting them behind the back(s) of the bather(s) and on both
sides of the bench. The heater for the legroom is installed in line with the bench under the seat
mounting it onto the back wall. In front of the infrared heaters will be installed grills for
leaning, on which you can lean on during sauna. Legroom heater doesn’t need a grill.
Take note of the security and installation instructions provided by the manufacturer while
installing the infrared heaters.
A pleasant temperature for an infrared sauna is 60oC. Every bather will find a suitable
temperature for themselves by trying.
A good time to bathe in an infrared sauna is 30 minutes. Maximum sauna time is one hour at
once.
Infrared sauna evaporates a lot of water from your body. Remember to drink plenty of water.
The need for infrared heaters
When determining the quantity of infrared heaters the sauna space must be taken into
account. You need about 1kW / m worth of power altogether from the heaters to heat up the
space3. Any glass or tiled surface adds about 1,2kW/m to the need of power2.
Installation examples
When the sauna size is about 4m3and you
want to heat it up with
Duetto®-infrared heater alone, five
heaters is enough.
Infrared heaters are placed on the
back wall behind the bench
on the sides
legroom
Leaning grills are installed to cover the
heaters.
Legroom heater is installed underneath
the upper bench so, that it is mounted on
the wall without a leaning grill.
The height of an infrared sauna room
should be no less than 1800 mm.
Infrared heater in a ceiling
In an infrared room, a heater can also be mounted to the ceiling if required, so that the ray of
heat is directed to the legs of seated people.

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In a stove-heated sauna, the distance
between a heater and sauna ceiling should be
no less than 100 mm.
In a stove-heated sauna you need three
heaters for two bathers, for example, when
using the regular stove at the same time.
One for the back of each bather covered with
a leaning grill and one heater for the
legroom. Legroom heater is mounted
underneath the upper bench, on the back
wall. Legroom heater doesn’t need a grill.
The height of a sauna room is normally
between 2100 to 2300 mm.
The minimum height is specified in the
installation and operating instructions of the
sauna stove.
Using infrared heaters in the ceiling of a stove-heated sauna is not recommended.
Placing the infrared heater
The heaters are placed on the wall mounting them behind the back(s) of the bather(s) and on
both sides of the bench. The heater for the legroom is installed in line with the bench under
the seat mounting it onto the back wall.
In front of the infrared heaters will be installed grills for leaning, on which you can lean on
during sauna. Legroom heater doesn’t need a grill.
Infrared heater for stove sauna
If you want, you can heat a stove sauna with infrared heaters. In this situation the need for
heaters is calculated by the cubic capacity of the sauna.
When the sauna is heated with a stove you need a minimum of one infrared heater per bather.
To enhance the effect of the heat you can install infrared heaters to the legroom and on the
sides of the benches when possible. Preheat the sauna with the stove to approx. 45oC. Turn on
the infrared heaters and enjoy the beneficent heat.
Joint use of infrared heaters and sauna stove
The heaters are placed on the wall mounting them behind the back(s) of the bather(s) and on
both sides of the bench and to the legroom. The heater for the legroom is installed in line with
the bench under the seat mounting it onto the back wall.
In front of the infrared heaters will be installed grills for leaning, on which you can lean on
during sauna. Legroom heater doesn’t need a grill.
Take note of the security distances of the stove when installing the infrared heaters.
A pleasant temperature for a combination sauna is 70oC. Every bather will find a suitable
temperature for themselves by trying. In a combination sauna you can throw water on the
stove and enjoy the infrared heat simultaneously.
Infrared sauna evaporates a lot of water from your body. Remember to drink water.

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ADJUSTING THE TEMPERATURE
The temperature in the infrared sauna is adjusted with a control unit or timer suitable for
controlling infrared heaters. Follow the control unit or timer manufacturer’s instructions for
installation and use.
The timer must have a bipolar cut-out, so the voltage can be cut out.
Placing the temperature sensor
When you use a control unit to control the temperature in an infrared sauna the
manufacturer’s instructions for installation and use must be followed.
If you use a timer that defines how long the heaters are on you do not need a temperature
sensor.
Always make sure that there are no objects on top
or close to the infrared heaters before you switch
on the heaters.
If the stove is on simultaneously with the infrared
heaters the thermostat of the control unit is
installed on the wall close to the heaters.
If you use a timer to control Duetto®–infra red
heaters (with bipolar cut-off), the heaters do not
need a room thermostat.
Check that the infrared heaters have turned off
and no longer emit heat after you have finished
using the sauna.
The electric wiring shall be carried out by a legitimate electrician or a company following the
appropriate specifications of the electricity trade.
VENTILATION OF AN INFRARED SAUNA
You must take care of sufficient ventilation when using infrared heaters to get enough fresh air
into the room. When the infrared heaters stay hot they provide nice warmth during the whole
sauna session.
MAINTENANCE
Duetto®–infrared heater doesn’t require any other maintenance apart from cleansing. The
cleaning can be carried out with a cloth and mild detergent.
During cleaning the device must be disconnected.
Before turning the heaters on, make sure they are not covered and that they are in
good condition.

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INSTALLING INSTRUCTIONS
Check the product in case of any damages from the transport.
Attach the infrared heater following the instructions. Pay attention to installing the screws,
covering plugs and casing the visible parts of the silicone cable.
Perform the electric installations. The electric wiring shall be carried out by a legitimate
electrician or a company only following the appropriate specifications of the electricity trade.
Make sure that the infrared heater is functioning normally and securely.
Install the leaning grill.
If the infrared heater is damaged it shall not be installed or used.
INSTALLATION of the infrared heater
Attach the heater onto a straight,
solid platform that is at least the
same size as the heater.
The heater is mounted with four
screws and the screws are covered
with plugs.
Don’t tighten the screws too much.
The infrared heater is made of glass
and breaks when bended.
The ventilation in the back of the
heater must not be blocked.
Infrared heater must not be
covered.
The legroom heater is placed
underneath the upper bench and
mounted to the back wall.
The gaps in the leaning grill
must be at least so big that a
ball of a diameter of 75mm
will not touch the surface of
the glass.
The distance between the
horizontal bars of the backrest
to the surface of the heater
frame must be at least 9 mm.
The cord of the heater is
placed downwards and
stringed behind the panel or
covered otherwise.
IP54 Protected
against dust
and water jets
The joint box is installed under the benches or in a
place otherwise suitable.
The wires of the infrared heater are joined either in
shunt or in series if needed (a maximum of 2 infrared
heaters in one series).
A cable from the control unit is brought to the
connection box. The connections should be carried out
following the electric installation instructions of the
control unit.
The temperature sensor is installed on the wall near
the heaters if it is a stove-heated sauna. In other case
the sensor is installed on the ceiling of the infrared
sauna about 20cm from the wall where the heaters are
on.
A timer does not need a temperature sensor for the
room.
Control unit
or timer switch

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Installation distances
Infrared heater can be mounted onto a wooden surface directly from its back and
edges.
The safety distance between hot front part of the infrared heater and flammable
material is 5mm
Infrared heater must not be covered.
The ventilation in the back of the heater must not be blocked.
Area without heat elements 20 mm
in each corner
Infrared heater
glass edge temperature max 80oC
Do not touch the heater while it is
switched on. The glass is hot and
can cause burns.
Heat element
back temperature
max +60oC

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ELECTRIC WIRING OF INFRARED HEATERS
When performing the electric wiring the infrared heaters can be connected in two different
ways - either shunt or series.
Shunt
Series
If two heaters are connected in series the fuse size needed is reduced.

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WARRANTY
The warranty is consistent with currently existing specifications.
Manufacturer’s guarantee
This warranty clause is followed between Rauduspuu Oy (later “Manufacturer”) and the
other party (later “Client”) considering the products provided by the Manufacturer,
unless otherwise specifically agreed in writing in the agreement. This warranty clause
supersedes all the general terms used by the client considering the matters regulated in
this warranty clause. The warranty only applies on products sold and used in Finland.
The Manufacturer guarantees, that the product matches the specifications agreed and is
suitable for its ordinary use. The warranty covers possible defects of production and
material. The Manufacturer is not responsible for defects that are due to normal tear
and wear or due to the character qualities of the wooden parts.
The guarantee is valid for 12 months when used commercially and 24 months in private use.
Guarantee time starts when the product has been delivered to the final user. The Manufacturer is
not, however, in any way responsible for defects that appear over two (2) years after delivering
the product to the Client. The warranty receipt is the receipt from the retailer or a report from a
legitimate electrician/company/measurement report.
The buyer must take care of the product carefully. When receiving the product, the
buyer must make sure it has no defects due to transportation or storing. The
Manufacturer is not responsible for product defects, malfunctions or deficiencies that
are caused by transportation or false storing, installation or use against the
manufacturer’s instructions or using in a space where the conditions
do not comply the manufacturers recommendations.
If the device is altered or the instructions of use provided by the manufacturer are not
followed without manufacturer’s distinct approval, any warranty is invalid.
The manufacturer can choose to fix a defected product or deliver a new product to the
client to replace the defected one. The warranty does not cover possible detaching and
installation costs or other similar costs. A broken product must be returned on
manufacturer’s request and cargo cost.
When making any warranty claims both the serial number and the type number must
be provided along with a probative error description.
The buyer should notify about any defect or malfunction immediately after it has been
detected. The notice can be delivered primarily to the retailer of the product, authorised
installation company or importer.
The manufacturer is not in any conditions responsible for indirect losses such as loss of
productivity, business profit, contracts, benefit of use or decrease in revenue.
These terms are valid for the time being since 1.4.2019.
Selling date: Importer:
Rauduspuu Oy
Muurimestarintie 6
61800 Kauhajoki
Retailers stamp and signature