EOS Cubo 2 User manual

EN
IPx4
Made in Germany
EOS Bi-O Cubo 2
Print-no. 29345373en / 41.23
Subject to technical changes without notice
Installation and operating instructions
Sauna Heater
Style 1 Style 2

2
EN
Contents
1. General safety instructions...................................................................................................... ................4
2. Identication.............................................................................................................................................. 10
Manufacturer, copyright, identication, nameplate ............................................................. 10
Intended use ........................................................................................................................................ 11
Foreseeable misuse ........................................................................................................................... 11
General instructions .......................................................................................................................... 12
3. Scope of delivery ...................................................................................................................................... 13
4. Technical data............................................................................................................................................ 14
5. Electrical installation ............................................................................................................................... 15
Heating period limitation................................................................................................................ 15
Connection 7,5 - 10 kW - 400 V...................................................................................................... 16
Connection 12 kW - 400 V ............................................................................................................... 17
Electrical connection - 230 V .......................................................................................................... 18
Internal wiring ..................................................................................................................................... 19
Vaporiser circuit diagrams............................................................................................................... 19
Establishing an electrical connection ......................................................................................... 21
6. Installation .................................................................................................................................................. 22
Specications for the cabin ............................................................................................................ 22
Dimensions and safety gaps........................................................................................................... 23
Air inlets and outlets ......................................................................................................................... 24
Requirements for control unit and Temperature sensor...................................................... 25
Mounting the oor level compensation pads ......................................................................... 25
Connecting cable ............................................................................................................................... 26
Fitting the angle bracket.................................................................................................................. 26
Fixed water connection (optional)............................................................................................... 27
7. Commissioning and operation............................................................................................................ 28
Filling with stones .............................................................................................................................. 29
Starting the heater............................................................................................................................. 29
Switching the heater on remotely................................................................................................ 29
Water splash ......................................................................................................................................... 30
Commissioning the vaporiser........................................................................................................ 31
Finnish sauna ....................................................................................................................................... 33
8. Maintenance and servicing................................................................................................................... 34
Cleaning................................................................................................................................................. 34
Sauna stones........................................................................................................................................ 34
9. Service .......................................................................................................................................................... 36
Replacing the tubular heating element..................................................................................... 36

3
Descaling the vaporiser.................................................................................................................... 39
Cleaning the vaporiser ..................................................................................................................... 40
Draining the vaporiser...................................................................................................................... 41
Troubleshooting ................................................................................................................................. 42
10. Recycling and service address............................................................................................................. 43
11. General terms and conditions of service ......................................................................................... 44

33
General safety instructions
1. General safety instructions
Safety instructions and important operating instructions are classied. Please familiarise yourself
with the following terms and symbols:
Safety levels
CAUTION
Caution
Indicates a hazardous situation which, if not avoided, could result in minor or moderate
injury.
NOTICE
Notice
Indicates a hazardous situation which, if not avoided, will result in damage to the unit.
WARNING
Warning
Indicatesahazardoussituationwhich,ifnotavoided,couldresultindeathor serious injury.

34
EN General safety instructions
1.1 Mounting and electrical installation
These installation instructions are intended for qualied personnel familiar with the
laws and regulations applicable to electrical installations at the installation site. Ob-
serve the following general safety instructions during mounting, conguration and
commissioning of the product.
►Risk to life and limb and risk of re
Risk to life and limb from electric shock and re in the event of improper or faulty electrical
connection. This risk remains also after completion of the installation work.
The electrical installation of the heater, relay boxes and other electrical systems
or equipment with a xed mains connection must only be performed by a trained
electrician from an authorised electrical company.
Ensure compliance with the applicable standards and regulations for electrical
installation.
The system must be completely disconnected from the mains supply before com-
mencing installation and repair work.
The housing cover must only be removed by a specialist.
►Fire hazard from overheating
Insucient ventilation can lead to device overheating and re.
Install air inlets and outlets in the cabin.
Observe the cabin manufacturer’s safety and installation instructions.
►Risk of re due to sauna stones
It is possible for hot stones or stone pieces to fall out of the rock store.
The sauna heater may not be placed on a oor made of easily ammable material
(e.g. laminate or synthetic ooring). Ceramic tiles are recommended as a ooring
option.
►Risk of burns from hot glass
Glass surfaces in the cabin become hot while the sauna is in operation.
When installing the cabin, ensure that the touchable glass surfaces on the outside of

35
General safety instructions
the cabin may reach a maximum temperature of 76°C. Appropriate protection may
need to be installed if required.
►Risk of burns from hot unit
During operation, the sauna heater may become hot and, if touched, could cause burns.
Maintain a safe distance.
►Sauna cabin and sauna heater
The sauna cabin must be constructed with proper material and built in a professional man-
ner, and the output of the sauna heater must be suited for the cabin.
The sauna heater may only be used in sauna cabins made of suitable, low-resin and
untreated material (e.g. Nordic spruce).The control unit must not be used in the
cabin.
Multiple heaters may be installed in one sauna if the heater output can properly sup-
ply the cabin volume. In this case, depending on the position, an additional safety
temperature limiter must be installed for each additional heater.
The sauna heater is not designed to be installed or set up in an alcove or under a
bench or sloping roof unless the sauna heater is specically designed and approved
for this type of installation.
Receptacles may not be installed inside the sauna cabin.
Each sauna cabin must have air inlets and outlets.The air inlets and outlets may be
installed from below or from behind the heater.The minimum dimensions of the air
inlets and outlets can be found here: Technical data, Air inlets and outlets,
The air outlet is always installed in the lower part of the wall, diagonal to the sauna
heater.The air inlets and outlets must not be closed. Please observe the instructions
provided by your sauna cabin manufacturer.
Use one of the control units listed below to check and control the sauna heater.
This control unit is xed to a suitable location on the cabin’s external wall, and the
corresponding temperature sensor according to the installation instructions that
accompany the control units inside the sauna cabin.

36
EN General safety instructions
The 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. Ensure that the heater is installed in compliance
with the standards and legal norms valid in your country.
The cabin door must open outward and must not have a lock that cannot be opened
in the case of failure. We recommend magnetic or spring locks.
All electrical installations and equipment in a sauna must comply with the IEC
60364-7-703 (DINVDE 0100-703) norm.
1.2 Operator instruction
The operator of the sauna cabin must be instructed in the general safety instructions during
commissioning. The operator must be given a copy of the operating instructions.
►Risk of electric shock
A risk to life and limb from electric shock and re arises in the event of improper repair work.
This risk remains also after work is completed.
The housing cover must only be removed by a specialist.
Repairs and installations must only be performed by a trained specialist.
The system must be disconnected and removed entirely from the mains supply
before commencing repair work.
Use only original spare parts from the manufacturer.
►Fire hazard
Objects placed on the heater or protective guards can easily be ignited and cause
res.
Attach the heater guard rail.
Do not place objects on the heater.
Fill the stone grate as directed.
Inspect the sauna cabin prior to each commissioning.
If you switch on the heater using pre-set timers or a remote control, attach a protec-

37
General safety instructions
tive cover to the heater or install a suitable safety system.
►Health risks
Spending time in a sauna cabin can lead to serious health risks or even death for persons
with health impairments.
Persons with health impairments who spend time in a sauna must consult a doctor
before entering a sauna cabin.
►Equipment damage due to overuse
If the cabin is used commercially, the heating time must be set so that the heater switches
o automatically after a specic period of time.
If the heating does not switch o automatically after a dened heating period, cabin
use must be supervised at all times.
Inspect the cabin before each use.
►Damage to health
Excessive time spent in a heated sauna cabin can lead to overheating of the body (hyperther-
mia), 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
eects 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 physically leave the room and unconsciousness.
Alcohol, drugs, and medications increase the risk of hyperthermia.
Do not exceed the maximum recommended time in the sauna.
Leave the sauna cabin if your body responds abnormally to the heat or if you do not
feel well.
Avoid alcohol, drugs, and medications when you are using the sauna.
►Operation by children or persons with reduced mental capacity
This unit should not be used by children or persons with reduced mental capacity or limited

38
EN General safety instructions
physical or sensory abilities. Children must not play with the unit.
Children or persons with reduced mental capacity, or limited physical or sensory
abilities must be supervised to ensure they do not play with the unit.
Children under 8 years of age should not operate the sauna cabin.
The settings for the heating time must only be changed by children under 8 years of
age if they are supervised by an adult.
The sauna cabin must only be used by persons with reduced mental capacity, or
limited physical or sensory abilities under supervision or if they have been previous-
ly instructed in its use and understand the risks.
Children and persons who have not received proper instruction must not clean or
service the system.
1.3 Standards and regulations
For an overview of the standards that were observed during design and construction of the sauna
heaters, please refer to the individual product’s technical data sheet that can be downloaded from
www.eos-sauna.com.

10
EN Identication
2.1 Manufacturer
EOS Saunatechnik GmbH
Schneiderstriesch 1
35759 Driedorf, Germany
Tel.: [phone]
Email: [email protected]
2.2 Copyright
Copyright for these installation instructions remains with EOS Saunatechnik GmbH.
Copyright as per DIN ISO 16016:
The copying and distribution of this document, as well as the use and communication of its con-
tents without express authorisation, are not permitted. Compensation will be claimed in the event
of infringements. All rights reserved with regard to patent claims or submission of design or utility
patent.
2.3 Identification
EOS Bi-O Cubo 2 is an electric sauna heater with an integrated vaporizer and is available in a variety
of output capacities.
The sauna heater EOS Bi-O Cubo 2 must be operated with one of the EOS sauna control units,
which are specied in the Technical Data section. The sauna control unit is not included in the
scope of delivery.
2.4 Nameplate
The nameplate is attached on the rear side of the heater.
A. General name
B. Model name
C. Item number
D. Electrical connection
E. Approval symbols
F. Country of origin
G. Manufacturer
H. Date of production
I. Serial number
A
B
C
D
E
F
G
H I
2. Identication
Elektro-Saunaofen
Type EOS Bi-O Cubo 2
Art.-Nr. 94 XXXX XX
400V 3N ~ 50Hz XX kW
Made in Germany
EOS-SAUNATECHNIK GmbH, Schneiderstriesch 1, 35759 Driedorf
S-No. 35.23 00001
IPx4

11
Identication
2.5 Bestimmungsgemäße Verwendung
This sauna heater is intended solely for the purpose of heating sauna cabins, together with a suit-
able control unit and one relay box.
EOS Bi-O Cubo2 is a oor-standing sauna heater. It is suitable for cabins for commercial and private
use.
The heater is not suitable for outdoor use.
It must be operated only in sauna cabins 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.
Any use beyond this is considered improper use. Proper use also includes compliance with operat-
ing, maintenance and servicing requirements. The manufacturer is not responsible for unauthor-
ised modications and damages resulting from these modications; the person modifying the
equipment alone shall bear the associated risk.
2.6 Foreseeable misuse
The following are considered instances of foreseeable misuse:
The unit is operated without knowledge of or compliance with the safety instructions.
Operating, service and maintenance requirements are not observed.
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 reduced 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 lled as directed.
The heater power does not match the sauna volume.
The unit is operated with insucient air supply or exhaust air.

12
EN Identication
2.7 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 suit each other.
Observe the specications and information provided by your sauna retailer.
Please note that the highest temperatures in the cabin are always above the sauna heater
and that is where the temperature sensor and safety temperature 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 oor of the sauna cabin.
Temperatures are measured and regulated based on the ceiling values. Thermometers
placed below the ceiling will therefore display lower temperatures. When the max.
temperature is set for the area around the upper sauna bench, the bathing temperature is
typically between 80°C and 90°C.
The rst time the cabin is heated, you may notice a slight odour resulting from the evap-
oration of consumables used in the manufacturing processes. Air out your cabin once it
has been heated and before using the sauna.

13
Scope of delivery
3. Scope of delivery
Check the delivery to ensure that all components were delivered and that the unit is in proper
working order. Contact your distributor if components are missing or damaged. The unit must not
be operated if components are missing or damaged.
The following parts are included in the scope of delivery:
A. Sauna heater
B. Installation and Operating Instructions
C. Mounting bracket for wall fastening, with 2 screws
D. 4 oor level compensation pads
Bi-O Cubo 2, Styling 1
Styling 2 design example
Accessories (optional)
Description Item number
Safety guard rail with brackets (brushed stainless steel) 947112
Safety guard rail with brackets (matt black) 947668
Brackets for guard rail without wooden parts, brushed stainless steel 946123
Brackets for guard rail without wooden parts, matt black 947279
A
B
D
C

14
EN Technical data
4. Technical data
Heater power as per DIN 7.5 kW 9.0 kW 10.0 kW 12.0 kW
Electrical connection 400V 3N ~ 50 Hz
Vaporiser output/volume 2.0 kW / 9 l 3.0 kW / 9 l
For sauna volume 7 - 10 m³ 9 - 14 m³ 11 - 15 m³ 14 - 18 m³
Minimum size of air inlet and outlet 35 x 5 cm 35 x 6 cm 35 x 6 cm 35 x 7 cm
Weight, w/out stones and packaging 33 kg
Heater dimensions, H x W x D 95 x 40 x 39.5 cm
Stone volume ~ 25 kg calibre 50-100 mm (not included)
Power extension (PEB unit) * no yes
For use with the sauna control units EOS Econ H-Serie, Compact H-Serie, EmoTec H-Serie,
EmoStyle H/Hi, EmoTouch-Serie
Leakage current max. 0.75 mA per kW heater output
Intended use / area of application Use in private and commercial sauna cabins
Fuse protection for control unit 3 x 16 A
Fuse protection for PEB unit — 3 x 16 A
Connection mains – control unit 5 x 2.5 mm²
Connection mains – PEB unit — 5 x 2.5 mm²
Connection control unit – heater 5 x 1.5 mm² & 4 x 1.5 mm²
Connection PEB unit – heater — 5 x 1.5 mm²
Connection control unit – PEB unit — 4 x 1.5 mm²
All line cross-section specications are the minimum cross-sections for the copper line.
*Note for power extension
• For Econ series control units a PEB 10 relay box needed by 10 - 12 kW.
• For Compact H18 control units no power extension is required.
• For other EOS control units, a PEB10 relay box needed by 12 kW.

15
Electrical installation
5. Electrical installation
This chapter describes how EOS Bi-O Cubo 2 is connected to the power extension units..
5.1 General instructions for electrical installation
Ensure that electrical installation is performed in compliance with the standards and legal norms
valid in your country.
Following norms must be observed by the installation of sauna heating appliances:
IEC 60364-7-703 bzw. DIN VDE 0100 Teil 703
This standard states in its current edition under amendments paragraph 703.412.05 as follows:
“The additional protection must be provided for all current circuits of the sauna by one or more
fault current protection devices (RCDs) with a rated dierential current not exceeding 30 mA, ex-
cept for sauna heaters.”
If a residual current device (RCD) is installed, ensure that there are no other electrical consumers
not belonging to the sauna system which are fused via this RCD.
If the sauna heater has not been used for an extended period of time, the heater may draw mois-
ture from the ambient a ch, in rare cases, could lead to the RCD to be tripped. This is a physical
process and not a fault on the part of the manufacturer.
In this case, the heater must be heated by a technician under supervision which will bypass the
RCD function. Once the moisture has escaped from the heating elements after approx. 10 minutes,
the RCD can be integrated again in the electric circuit.
If the sauna heater will not be used for an extended period of time, we recommend that you switch
on the heater every 6 weeks so that the heating elements do not accumulate moisture. If, during
commissioning, the RCD is triggered, the electrical installation must be checked again.
The electrician is responsible for properly connecting the heaters; thus, the manufacturer does not
assume liability.
►Heating period limitation
All sauna heaters, except for those installed in public saunas, and which must be operated under
the supervision of personnel, must be equipped with a timer that complies with IEC and EN stand-
ards. For safety reasons, this timer limits the operation time. This timer is typically integrated in all
EOS sauna control units.
The operation time of a public sauna must be limited so that the heating elements are
without power for a minimum of 6 consecutive hours within a 24-hour period before an
independent restart can take place.
Units used in private saunas must be limited to an operating time of 6 hours, and an auto-
matic restart is not permitted.

16
EN Electrical installation
5.2 Connection 7,5-10,0 kW (12 kW*) – 400 V 3N ~
►Connection overview
►Connection diagram
4
Saunasteuergerät
Control unit
Boîtier de commande
Пульт управления
Saunaofen
Sauna heater
Poêle de sauna
Печь для сауны
5
Netz / Mains / Réseau / Сеть
5
Notes: By 10kW not for Econ series control units (power extension required by 10-12 kW)
* By Compact H18 suits also 12 kW models.
WB WM N
max. 3 kW
Verdampfer
Vaporizer
N U V W
L1 L2 L3 N W V U N NWB WM
400 V 3N ~
Netz / Mains / Réseau / Сеть
3x16A
Saunasteuergerät / Control unit /
Boîtier de commande / Пульт управления
Saunaofen / Sauna heater
Poêle de sauna / Печь для сауны
Saunasteuergerät / Control unit /
Boîtier de commande / Пульт управления
Sensor/
Limiter

17
Electrical installation
5.3 Connection12,0 kW – 400 V 3N ~
►Connection overview
►Connection diagram
LSG / PEB
5 5
5
4
5
4
Saunasteuergerät
Control unit
Boîtier de commande
Пульт управления
Saunaofen
Sauna heater
Poêle de sauna
Печь для сауны
Leistungsschaltgerät
Power extension unit
Extension de puissance
Блок расширения
мощности
Netz / Mains / Réseau / Сеть
Notes: Not for Compact D18 control units. Power extension not required.
400 V 3N ~
Netz / Mains / Réseau / Сеть
3x16A
N U V W N U V W
1 1 1 1
400 V 3N ~
Netz / Mains / Réseau / Сеть
Saunaofen / Sauna heater
Poêle de sauna / Печь для сауны
WVU N VS1 L1 L2 L3N N
S1 N
L1 L2 L3 N W V U N NWB WM
Saunasteuergerät / Control unit /
Boîtier de commande / Пульт управления
Saunasteuergerät / Control unit /
Boîtier de commande / Пульт управления
Sensor/
Limiter
WB WM N
Verdampfer
Vaporizer
LSG / PEB
Contactor box

18
EN Electrical installation
5.4 Electrical connection 7.5-9.0 kW at 230 V 1N ~
WARNING
Risk of re by incorrect installation and connection
The control unit and the sauna heater must be suitable for connection to 230V 1N ~.
Use suitable fuses and cable lines.
230 V AC
L1 L2 L3 N W V U N
Saunasteuergerät / Control unit /
Boîtier de commande / Пульт управления
PE (Gr)
L
N
45A
Saunaheizgerät / sauna heater
poêle de sauna / печь сауны
U V W N N
PE
(Gr)
N
X Y Z
1,5²
2,5² 2,5²
1,5²
1,5²
*4(6)²
Verdampfer /
vaporizer
max. 3kW
N WmWb
WmNWb
*4(6)²
Optionales Zubehör, nicht im Lieferumfang enthalten
Optional accessories, not included in delivery
Accessoires optionnels, non inclus dans la livraison
Дополнительные принадлежности, не входит в комплект поставки
Verteiler zum
1phasigen Anschluß
Absicherung 3 x 16A
Junction box
fuse protection 3 x 16A
*4(6)²
* The cable cross sections must suit the heater power: 7.5 - 9.0 kW - 6 mm²

19
Electrical installation
►7,5 kW heater output
►9,0 / 10,0 / 12,0 kW heater output
5.5 Internal wiring
U V W NPE
(Gr)N N
X Y Z
7,5 kW
1500 W 1500 W 1500 W 1500 W 1500 W
7,5 kW = 5x 1500W
9 kW = 6x 1500W
10 kW = 6x 1666W
*12 kW = 6x 2000W
* only for connedtion with Compact D18/H18 control unit.
U V W X Y Z
NNN
PE (Gr)
12 kW - mind. 5x 2,5²
14 kW - mind. 5x 4²

20
EN Electrical installation
Wb
N
Wm
PE
max. 3 kW

Wb N Wm PE
braun / brown
schwarz / black
►12,0 kW heater output -dual circuit-
5.6 Vaporiser circuit diagrams
The vaporiser must be connected as shown in the circuit diagrams.
Please observe the installation and operating instructions for the control
unit and relay boxes.
A
C
D
B
A. Heating element
B. Signal
C. Thermostat
D. Connection for sauna control unit
U V W X Y Z
NNN
PE (Gr)
U V W X Y Z
NNN
PE (Gr)
SSG PEB
SSG - Saunasteuergerät, PEB - Leistungsschaltgerät
12 kW = 6x 2000W