EOS Structure User manual

EOS Structure
Sauna heater
Installation and Operating Instructions
EN

Documentation
EN
2 Installation and Operating Instructions - EOS Structure
Documentation
Purpose
These instructions contain important information on safe and proper transport-
ing, installing, starting up, operating, maintaining, dismantling of the product and
so that you can correct simple faults yourself.
Read these instructions in full before working with the product.
Target group
These instructions are directed at all persons who are assigned to assemble, in-
stall, commission and operate, clean and service, maintain, troubleshoot, dis-
mantle and dispose of the product and its components.
The "Electrical installation" and "Maintenance by a trained electrician" chapters
are only directed at trained skilled personnel, who are familiar with the laws and
regulations for electrical installations in the installation site (electrically skilled
personnel).
Manufacturer
EOS Saunatechnik GmbH
Schneiderstriesch 1
35759 Driedorf, Germany
Tel. [phone]
Fax [phone]
Email [email protected]
Web www.eos-sauna.com

Documentation
EOS Structure - Installation and Operating Instructions 3
Means of representation
The following means of representation are used in these instructions:
Icons Symbol Meaning
Additional information about an operating step
Cross-reference to a page
Result of a single action
Overall result of an instruction
Table title
Title of figure
Revision history
Dated Revision Version Description
06/02/2022 25/04/2023 01.00 First version

EN
4 Installation and Operating Instructions - EOS Structure
Table of contents
Documentation ....................................................................................2
Purpose.................................................................................................................2
Target group .......................................................................................................2
Manufacturer ......................................................................................................2
Means of representation.................................................................................3
Revision history.................................................................................................. 3
1 General safety instructions .................................................................6
1.1 Safety instructions for assembly and installation.................................. 6
1.2 Operator instruction......................................................................................... 8
1.3 Personal protective equipment .................................................................10
1.4 Safety instructions and warnings..............................................................11
1.5 Safety devices...................................................................................................13
1.5.1 Heater guard rail ................................................................................13
1.5.2 Temperature sensor with safety temperature limiter..........13
1.5.3 Heating period limitation ...............................................................13
1.6 Illegible signage...............................................................................................13
1.7 Standards and regulations...........................................................................13
2 Identification......................................................................................14
2.1 Control system .................................................................................................14
2.2 Nameplate .........................................................................................................14
2.3 Scope of delivery.............................................................................................15
2.4 Technical data...................................................................................................16
2.5 Intended use .....................................................................................................17
3 Installation..........................................................................................19
3.1 Specifications for the cabin .........................................................................19
3.2 Unpacking the product.................................................................................21
3.3 Setting up the product..................................................................................21
3.4 Air inlets and outlets ......................................................................................22
3.5 Installing the temperature sensor.............................................................23

4 Electrical installation .........................................................................24
4.1 Notes on the electrical installation ...........................................................24
4.2 Connection cable and electrical cables...................................................24
4.3 Connection diagram (heater output 6kW, 8kW, 10 kW, 400kW~)
................................................................................................................................25
4.4 Connection diagram (heater output 12kW with LSG, 400kW~)...26
4.5 Connection diagram (heater output 6 kW, 8 kW, 230 V 1N~).........27
4.6 Internal wiring ..................................................................................................29
4.7 Establishing an electrical connection ......................................................30
4.8 Installing the control......................................................................................30
4.9 Heating period limitation.............................................................................30
5 Commissioning and operation .........................................................31
5.1 Filling with stones ...........................................................................................31
5.2 Starting the sauna heater.............................................................................32
5.2.1 Switching on and switching off the sauna heater.................32
5.2.2 Starting up the sauna heater remotely......................................32
5.2.3 Heating the sauna heater ...............................................................32
5.2.4 Heating the sauna heater for the first time..............................33
5.3 Water splash......................................................................................................33
6 Cleaning and servicing ......................................................................34
6.1 Cleaning the sauna heater...........................................................................34
6.2 Checking and replacing the sauna stones .............................................34
7 Maintenance by a qualified electrician ............................................36
7.1 Replacing the tubular heating elements................................................36
7.2 Replacing the connection cable ................................................................41
8 Troubleshooting ................................................................................42
9 Dismantling and disposal..................................................................43
9.1 Dismantling.......................................................................................................43
9.2 Disposal...............................................................................................................43
10 General terms and conditions of service..........................................44
10.1 Scope ...................................................................................................................44
10.2 Costs.....................................................................................................................44
10.3 Performance and cooperation obligations............................................44
10.4 Service visit by the manufacturer’s employees....................................44
10.5 Guarantee ..........................................................................................................44
10.6 Manufacturer’s warranty ..............................................................................45
EOS Structure - Installation and Operating Instructions 5

General safety instructions
EN
6 Installation and Operating Instructions - EOS Structure
1General safety instructions
1.1 Safety instructions for assembly and
installation
The installation instructions are intended for qualified person-
nel familiar with the laws and regulations applicable to elec-
trical installations at the installation site. Observe the following
general safety instructions during mounting, configuration
and commissioning of the product.
Risk to life and limb and
risk of fire
Risk to life and limb from electric shock and fire in the event of
improper or faulty electrical connection. This risk remains also
after completion of the installation work.
uThe electrical installation of the heater, power units and
other electrical equipment with fixed mains connection
may only be carried out by a trained electrician of an au-
thorised electrical company.
Ensure compliance with the applicable standards and reg-
ulations for electrical installation.
The system must be completely disconnected from the
mains supply before commencing installation and repair
work.
The housing cover must only be removed by a qualified
electrician.
Fire hazard from
overheating
Insufficient ventilation can lead to the unit overheating and
fire.
uInstall air inlets and outlets in the cabin.
uFollow the safety and installation instructions of the cabin
manufacturer.

General safety instructions
EOS Structure - Installation and Operating Instructions 7
Risk of fire due to sauna
stones
It is possible for hot stones or stone pieces to fall out of the
rock store.
uThe sauna heater may not be placed on a floor made of
easily flammable material (e.g. laminate or synthetic floor-
ing). Ceramic tiles are recommended as a flooring option.
Risk of burns from hot
glass
Glass surfaces in the cabin become hot while the sauna is in
operation.
uWhen installing the cabin, note that the touchable glass
surfaces on the outside of the cabin must not get hotter
than a maximum temperature of 76°C. Attach appropriate
guards if necessary.
Risk of burns from hot
unit
The sauna heater gets hot during operation. Touching the
sauna heater can cause burns.
uMaintain the safety distances.
Sauna cabin and sauna
heater
The sauna cabin must be properly built from suitable material
and the sauna heater must be suitable for the cabin.
uThe sauna heater and control unit may only be used in
sauna cabins made of suitable, low-resin and untreated
material (e.g. Nordic spruce).
uMultiple heaters may be installed in a sauna if the cabin
volume and heater output are compatible. In this case,
depending on the position, an additional safety temperat-
ure limiter must be installed for each additional sauna
heater.
uThe sauna heater is not designed to be installed or set up
in an alcove or under the bench or a roof slope.
uDo not install any electrical sockets in the sauna cabin.
uAir inlets and air outlets must be provided in every sauna
cabin. The air inlets and air outlets can be positioned be-
low or behind the sauna heater. The minimum dimen-
sions of the air inlets and air outlets are given in the tech-
nical data.
uThe air outlet is always installed in the lower part of the
wall, diagonal to the sauna heater. The air inlets and air
outlets must not be closed. Note the instructions of the
sauna cabin supplier.

General safety instructions
EN
8 Installation and Operating Instructions - EOS Structure
uUse one of the control units described in the technical
data of these instructions to control the sauna heater. This
control unit is fixed in a suitable place on the external wall
of the cabin. The corresponding sensor housings are fixed
inside the sauna cabin, refer to the control unit installa-
tion instructions.
uThe cabin lighting must be safe for sauna cabin use and
installed in such a way that it can be used safely in a sauna
cabin. Make sure that the standards and regulations ap-
plicable in the respective country are met.
uThe cabin door must open outwards and must not have a
lock that cannot be opened in the case of failure. We re-
commend magnetic latches or spring catches.
1.2 Operator instruction
The operator of the sauna cabin must be instructed in the fol-
lowing general safety instructions during commissioning. The
operator must be given a copy of these instructions.
Risk of electric shock A risk to life and limb from electric shock and fire arises in the
event of improper repair work. This risk remains also after work
is completed.
uRepairs and installations must only be performed by a
trained electrician.
uThe system must be disconnected and removed entirely
from the mains supply before commencing repair work.
uThe housing cover must only be removed by a qualified
electrician.
uUse only original spare parts from the manufacturer.

General safety instructions
EOS Structure - Installation and Operating Instructions 9
Fire hazard Objects placed on the heater or protective grilles can easily be
ignited and cause fires.
uDo not remove heater protection (sheet metal guard).
uDo not place objects on the heater.
uFill the rock store as directed.
uInspect the sauna cabin each time before switching on.
uIf you switch on the sauna heater using a pre-set timer or
a remote control, use a cover protection system for the
heater or install a suitable safety device.
Health risks Spending time in a sauna cabin can lead to serious health risks
or even death for persons with health impairments.
uPersons with health impairments must consult a doctor
before entering a sauna cabin.
Damage to health Excessive time spent in a heated sauna cabin can lead to over-
heating of the body (hyperthermia), which may cause serious
health problems and even death. Hyperthermia occurs when
the core temperature of the body exceeds the norm by a few
degrees. Symptoms of hyperthermia include fever, dizziness,
lethargy, sleepiness, and fainting. Side effects of hyperthermia
include perception disorders, inability to recognize the need to
leave the room, inability to identify imminent danger, harm to
the foetus in the case of pregnant women, inability to physic-
ally leave the room, unconsciousness.
Alcohol, drugs, and medications increase the risk of hyperther-
mia.
uDo not exceed the usual sauna times.
Leave the sauna cabin if your body reacts unusually to the
heat or if you feel unwell.
Do not drink alcohol, take drugs or medicines before a
sauna session.

General safety instructions
EN
10 Installation and Operating Instructions - EOS Structure
Operation by children or
persons with reduced
mental capacity
Children and persons with reduced mental capacity can put
themselves at risk.
uChildren must be supervised to ensure they do not play
with the sauna heater.
uChildren under 8years of age should not operate the
sauna cabin.
uThe settings for the heating time must only be changed
by children under 8years of age if they are supervised by
an adult.
uThe sauna cabin must only be used by persons with re-
duced mental capacity, or limited physical or sensory abil-
ities under supervision or if they have been previously in-
structed in its use and understand the risks.
uChildren and persons who have not received proper in-
struction must not clean or service the system.
1.3 Personal protective equipment
Personal protective equipment protects people from health
and safety impacts during their work. The specified protective
equipment must be worn.
Symbol Meaning
Wearing cut and puncture resistant gloves protect against
hand injuries.
4 Personal protective equipment

General safety instructions
EOS Structure - Installation and Operating Instructions 11
1.4 Safety instructions and warnings
Structure of the warnings
The warnings are structured as follows:
A B C
D
E
A Hazard symbol B Signal word
C Type and source of danger D Possible consequences of disreg-
ard
E Actions to avoid hazards
Structure of the warnings
Meaning of the signal words
Safety instructions and important operating instructions are
classified according to ANSI Z535.6. Please familiarise yourself
with the following terms and symbols:
WARNING
Indicates a hazardous situation which, if not avoided, results in
death or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, can result
in minor or moderate injury.
NOTE
Indicates a hazardous situation which, if not avoided, can result
in damage to the unit.

General safety instructions
EN
12 Installation and Operating Instructions - EOS Structure
Meaning of the symbols
The following symbols for hazards, warnings, mandatory in-
structions and prohibitions are used in this document:
Symbol Meaning
General warning of a hazard
4 Warning sign
Symbol Meaning
Do not cover
4 Prohibition sign
Symbol Meaning
Wear protective gloves
Refer to operating instructions
4 Mandatory sign
Explanation of safety symbols on the product
The following safety symbols are attached to the product:
Symbol Meaning
General warning of a hazard
Do not cover
Refer to operating instructions
4 Safety symbols on the product

General safety instructions
EOS Structure - Installation and Operating Instructions 13
1.5 Safety devices
1.5.1 Heater guard rail
The sauna heater gets hot during operation. Heater protection
(sheet metal guard) prevents direct touching of the external
surface of the heater. The heater guard must be installed dur-
ing operation.
1.5.2 Temperature sensor with safety temperature limiter
It is essential that the temperature sensor with the safety tem-
perature limiter (STB) is installed. The temperature sensor con-
nection is described in the instructions for the control unit.
1.5.3 Heating period limitation
All sauna heaters, except for those installed in public saunas,
and which must be operated under the supervision of person-
nel, must be equipped with a timer that complies with IEC and
ENstandards. For safety reasons, this timer limits the operation
time. This timer is typically integrated in all EOS sauna control
units.
1.6 Illegible signage
Stickers and signs can get dirty or become unrecognisable in
some other way so that hazards cannot be identified and ne-
cessary operating instructions cannot be followed. To avoid in-
juries, all warnings must always be kept in a good, legible con-
dition. Replace damaged signs or stickers immediately.
1.7 Standards and regulations
An overview of the standards used in the design and construc-
tion of the product, can be found on the manufacturer’s inter-
net site www.eos-sauna.com as a download for the respect-
ive product.
The local regulations for the installation and operation of heat-
ing, sauna and steam room systems also apply.

Identification
EN
14 Installation and Operating Instructions - EOS Structure
2Identification
EOS Structure is an electrically heated sauna heater for Finnish operation, which is
available with several different outputs.
2.1 Control system
The sauna heater EOS Structure may only be operated in conjunction with a con-
trol unit, which is named in the technical data of these instructions. The control
unit is not included in the scope of delivery.
2.2 Nameplate
Elektro-Saunaofen
Type EOS Structure
Art.-Nr. 94 XXXX 0X
400V 3N ~ 50Hz XX kW
Made in Germany
EOS-SAUNATECHNIK GmbH, Schneiderstriesch 1, 35759 Driedorf
S-No. 41.22 00001
IPx4
A
B
C
D
E
G H I
F
A Name B Model
C Item number D Electrical connection
E Country of origin F Manufacturer
G Heater output H Manufacturing date
I Serial number
Structure of the nameplate

Identification
EOS Structure - Installation and Operating Instructions 15
2.3 Scope of delivery
Check the delivery to ensure that all components were delivered and that they
are in proper working order. Contact your distributor if components are missing
or damaged. The heater must not be operated if components are missing or dam-
aged.
The following parts are included in the scope of delivery:
AD
E
F
C
B
General view of the sauna heater and the scope of delivery
Scope of delivery
Item Name Quantity
A Sauna heater EOS Structure 1 ea.
B Guard, preassembled 1 ea.
C Cubius stone set (15kg) with holder
frame
1 ea.
D Classic sauna stones, 30–60 mm, in
the box
15kg
E Installation and Operating Instructions 1 ea.
F Connection cable, preassembled, con-
nection length 8m
1 ea. at ≤ 10kW
2 ea. at 12kW

Identification
EN
16 Installation and Operating Instructions - EOS Structure
2.4 Technical data
Heater output (rated output to DIN)
6kW 8kW 10kW 12kW
For cabin volume 7 − 8m³ 8 − 12m³ 9 − 14m³ 14 − 18m³
Minimum dimensions of air inlets and outlets 35 × 4 cm 35 × 5 cm 35 × 6 cm 35 × 8 cm
Weight without stones and packaging 40 kg
Unit dimensions H×W×D 102 × 97×97cm
Stone filling– Approx. 30 kg
Size 30 − 60 mm
Electrical connection 400 V 3N ~ 50 Hz
Extension power unit (LSG unit) No LSG10, required
for specific con-
trol units from
10kW or 12kW
Suitable control units (not included) §Econ series (except D1, a power extension unit is required from
10kW)
§Compact series (a power extension unit is required for DP/DC for
12kW)
§EmoTec series (a power extension unit is required for 12kW)
§EmoStyle series (a power extension unit is required for 12kW)
§EmoTouch series (a power extension unit is required for 12kW)
Leakage current Max. 0.75mA per kW heater output
Area of application Use in private and commercial sauna cabins
Fuse protection for control unit 3 × 16 A
Fusing in the LSG 3 × 16 A 3 × 20 A
Connection, mains–control unit 5 × 2.5 mm² −
Connection, mains–power extension unit − 5 × 2.5 mm²
Connection, control unit − heater 5 × 2.5 mm² −
Connection, LSG–heater − 5 × 2.5 mm²
Connection, control unit − LSG − 4 × 1.5 mm²
All line cross-section specifications are the minimum cross-sections for the copper line.

Identification
EOS Structure - Installation and Operating Instructions 17
2.5 Intended use
The sauna heater EOS Structure is intended solely for the purpose of heating
sauna cabins, together with a suitable control unit.
The sauna heater EOS Structure is suitable for commercial and private use.
The sauna heater is not suitable for outdoor use. It must be operated only inside
buildings and may not be exposed to environmental conditions such as extreme
humidity and moisture or the possible formation of condensation or corrosive
substances in the ambient air, as well as other weather conditions.
Intended use also includes compliance with the operation, servicing and main-
tenance requirements. The manufacturer is not responsible for unauthorised
modifications and damage resulting from these modifications; the person modi-
fying the equipment alone bears the associated risk.
Any use beyond this is considered improper use.
Foreseeable misuse
The following are considered instances of foreseeable misuse:
§The unit is operated without knowledge of or compliance with the safety in-
structions.
§The requirements for operation, servicing and maintenance are not met.
§The unit is operated by children under 8years of age.
§The unit is operated by children 8years of age or older, or persons with re-
duced mental capacity who have not been thoroughly instructed in its use.
§The unit is operated without sauna stones or with a rock store that is not
filled as directed.
§The heater power does not match the sauna volume.
§The unit is operated with insufficient air supply or exhaust air.
General instructions
§Please note that an optimal sauna climate can be achieved only if the cabin
with its air inlets and outlets, the sauna heater, and the control unit are
planned with regard to each other.
§Note the data and information of your sauna supplier.
§Please note that the highest temperatures in the cabin are always above the
sauna heater and that is where the temperature sensor and safety temperat-
ure limiter should be mounted according to the installation instructions for
the control units.
§The sauna heaters heat the sauna cabin with heated convection air. Fresh air
is drawn in through the air inlet. It is warmed and rises (convection) and is
then circulated in the cabin. Some of the used air is pushed out of the cabin
through the cabin's air outlet. This creates a typical sauna climate in your
sauna. Note that there is a drop in temperature from the ceiling to the floor
of the sauna cabin. Temperatures are measured and regulated based on the
ceiling values. Thermometers placed below the ceiling will therefore display
lower temperatures. If the max. temperature is set, the bathing temperature
in the area of the upper sauna bench is typically between 80°C and 90°C.

Identification
EN
18 Installation and Operating Instructions - EOS Structure
§The first time the cabin is heated, you may notice a slight odour resulting
from the evaporation of consumables used in the manufacturing processes.
Air out your cabin once it has been heated and before using the sauna.

Installation
EOS Structure - Installation and Operating Instructions 19
3Installation
This temperature describes how to install the EOS Structure. Before installing the
heater, the air inlets and air outlets must be installed in the cabin. It may be ne-
cessary to mount additional fans in the inlets/outlets. All protective films must be
removed. Depending on the installation situation, the electrical installation must
be prepared before the assembly.
NOTE
Damage due to incorrect mounting location
The sauna heater is not suitable for outdoor use. The sauna
heater can be damaged if used outdoors.
uOnly operate the sauna heater inside sauna cabins.
uDo not expose the sauna heater to environmental conditions
such as extreme humidity and moisture with the possible
formation of condensation or media that have a corrosive ef-
fect in ambient air, as well as other weather conditions.
uDo not install the sauna heater in alcoves, under benches or
under roof slopes.
3.1 Specifications for the cabin
Before the sauna heater can be set up and installed the sauna cabin must be de-
signed and set up according to the requirements.
It must be ensured that the heater can be removed from the cabin even after the
cabin has been installed.
The floor on which the heater stands must be level. In general, it should be noted
that the sauna heater must not be set on a floor made of highly flammable mater-
ial (laminate, flooring made of plastic material, etc.). Ceramic tiles are recommen-
ded as a flooring option.
Electrical cables
All electrical installations inside the cabin must be laid with silicone cables and be
suitable for a temperature of at least170°C. All lines must be routed in such a way
that they are well-protected, e.g. in a cable duct. EOS recommends additional
sheathing of the connecting cable to prevent damage.

Installation
EN
20 Installation and Operating Instructions - EOS Structure
Minimum distances
Components Distance
Ceiling height min. 1900mm
Distance: heater – cabin wall min. 10mm
Distance: heater – bench (if bench is lower than
the heater)
min. 10mm
Distance: heater – bench (if bench is higher
than the heater)
min. 10mm
Distance between heater and combustible ma-
terials (wooden wall, bench, etc.)
see following diagram
Position of temperature sensor see following diagram
4 Minimum distances
min. 1900 mm
1020 mm
700 mm 10 mm
175 mm
355 mm
175 mm
10 mm
10 mm
355 mm
A B
C
A Front view B Side view
C Plan view
Minimum distances