EOS Cubo 2 User guide

EN
IPx4
Made in Germany
EOS Cubo 2
Print no. 29345362en / 38.23
Subject to technical changes
Installation and operating instruction
Sauna heater
Styling Typ 1 Styling Typ 2

2
EN
Contents
1. General safety instructions...................................................................................................... ............4-9
2. Identication.............................................................................................................................................. 10
Manufacturer, Copyright, Identification and Product Information...................................10
Intended use ........................................................................................................................................ 11
Foreseeable misuse ........................................................................................................................... 11
General instructions .......................................................................................................................... 12
3. Scope of delivery ...................................................................................................................................... 13
4. Technical data............................................................................................................................................ 14
Accessories............................................................................................................................................ 32
5. Electrical Installation ............................................................................................................................... 15
Heating time limitation.................................................................................................................... 15
Terminal diagram 7,5 - 10 kW - 400 V.......................................................................................... 16
Terminal diagram 12 kW - 400 V.................................................................................................... 17
Electrical connection - 230 V.......................................................................................................... 18
Internal wiring ..................................................................................................................................... 19
Establishing an electrical connection ......................................................................................... 21
6. Installation .................................................................................................................................................. 22
Requirements on site........................................................................................................................ 22
Dimensions and safety gaps........................................................................................................... 23
Air inlet and outlet ............................................................................................................................. 24
Requirements for control unit and temperature sensor ...................................................... 25
Mounting the oor level compensation pads ......................................................................... 26
Connecting cable ............................................................................................................................... 26
7. Commissioning ......................................................................................................................................... 27
Filling the rock store.......................................................................................................................... 27
Switching the sauna heater............................................................................................................ 28
Remote switching .............................................................................................................................. 28
Water splash ......................................................................................................................................... 29
8. Maintenance............................................................................................................................................... 30
Cleaning................................................................................................................................................. 30
Sauna stones........................................................................................................................................ 31
9. Service .......................................................................................................................................................... 32
Replacing the tubular heating elements................................................................................... 32
Troubleshooting ................................................................................................................................. 34

3
10. Recycling and Service Address............................................................................................................ 35
11. General terms and conditions of service ......................................................................................... 36

4
EN 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
Indicatesa hazardoussituationwhich,ifnotavoided,couldresultindeathor serious injury.

5
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. Observe the following general safety instructions during mounting, cong-
uration 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.

6
EN General safety instructions
►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
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.

7
General safety instructions
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.
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.

8
EN General safety instructions
►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-
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.
►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.

9
General safety instructions
►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
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
D-35759 Driedorf
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 of the device
EOS Cubo 2 is an electrically heated sauna heater for Finnish mode available in a variety of output
capacities.
The heater must be operated with one of the following control units, which are specied in Techni-
cal Data of this manual. The control unit is not included in the scope of delivery.
2.4 Nameplate
The nameplate is attached on the rear side of the heater.
Elektro-Saunaofen
Type EOS Cubo 2
Art.-Nr. 94 XXXX XX
400V 3N ~ 50Hz XX kW
Made in Germany
EOS-SAUNATECHNIK GmbH, Schneiderstriesch 1, 35759 Driedorf
S-No. 24.23 00001
IPx4
AGeneral name
BModel name
CItem number
DElectrical connection
EApproval symbols
FCountry of origin
GManufacturer
HDate of production
ISerial number
A
B
C
D
E
F
G
H I
2. Identication

11
Identication
2.5 Intended use
This heater is intended solely for the purpose of heating sauna cabins, together with a suitable
control unit.
EOS Cubo 2 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 liable for unauthorised modications made to the equipment and dam-
ages 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.
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.
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.
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.

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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. Accessory pack with four level compensation pads
C. Installation and operation manual
Cubo 2, Styling 1
Example for Styling 2
Accessories
Accessories Item no.
Mounting brackets for heater guard rail, brushed stainless steel 945792
Mounting brackets for heater guard rail, black painted stainless steel 947121
Safety guard rail (3-sided, maple) with mounting brackets (brushed steel) 946970
Safety guard rail (3-sided, maple) with mounting brackets (black) 947122
CB
A

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
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, without stones and packaging 27.5 kg
Heater dimentions, H x W x D 72 x 40 x 38.5 cm
Stone volume (not included)) ~ 25 kg (calibre 50-100 mm)
Power extension unit* (PEB unit) not needed PEB 10
For use with the sauna control units EOS Econ series, Compact series, EmoTec series, EmoStyle series, EmoTouch series
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 3 x 16A
(3 x 25 A**)
Fuse protection for PEB unit — 3 x 16 A
Connection mains – control unit 5 x 2,5 mm² (5 x 4 mm² **)
Connection mains – PEB unit — 5 x 2,5 mm²
Connection control unit – heater 5 x 1,5 mm² (**5 x 4 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.
Important notes concerning power extention:
Econ control units require a power extension units from 10 kW heater power. Econ D1 control units suit only 7.5
and 9.0 kW heaters.
* Compact D18 control units do not require an additional power extension unit (PEB).
** Only for Compact D18 with 12 kW heater version (single-circuit inner wiring).

15
Electrical Installation
5. Electrical installation
This chapter describes how EOS 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 air, which, 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.
5.2 Heating time limitation
►Heating time limitation operation principle
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. This timer fully disconnects the sauna heater from the power supply for safety reasons. It is
typically integrated in the sauna control units. The timer must be mounted outside of the sauna
cabin and may not be overridden.
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.
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
5.3 Connection 7,5-10,0 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
L1 L2 L3 N W V U N
U V W N
PE (Gr)
Saunasteuergerät / Control unit /
Boîtier de commande / Пульт управления
Saunasteuergerät / Control unit /
Boîtier de commande / Пульт управления
Saunaofen / Sauna heater
Poêle de sauna / Печь для сауны
400 V 3N ~
Netz / Mains / Réseau / Сеть
*By 10 and 12 kW unsuitable for Econ controls (power extension unit required from 10 kW)
** By 12 kW - only suits EOS Compact D18 control unit (single-circuit heaters).

17
Electrical Installation
5.4 Connection 12,0 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
400 V 3N ~
L1 L2 L3 N W V U N
Saunasteuergerät / Control unit /
Boîtier de commande / Пульт управления
Netz / Mains / Réseau / Сеть
3x16A
N U V W N U V W
1 1 1 1
LSG / PEB
Leistungsschaltgerät / power extension unit
S1 N
400 V 3N ~
Netz / Mains / Réseau / Сеть
Saunaofen / Sauna heater
Poêle de sauna / Печь для сауны
WVU N VS1 L1 L2 L3N N
*** Not for EOS Compact D18 control unit

18
EN Electrical Installation
5.5 Electrical connection of 7.5 - 9 kW to 230V 1N ~
230 V ~
L1 L2 L3 N W V U N
Saunasteuergerät / Control unit /
Boîtier de commande / Пульт управления
PE (Gr)
L
N
45A
6²
Saunaofen / sauna heater
poêle de sauna / печь сауны
max. 9.0 kW
U V W N N
PE
(Gr)
N
X Y Z
1,5²
2,5² 2,5²
1,5²
1,5²
6²
Sensor/
Limiter
optional accessories, not included in delivery
WARNING
Risk of re due to improper connection
The control unit and the sauna heater must be suitable for 230V 1N ~ connection.
Use suitable fuses and cable lines.
* Cable cross section must suit heater power: up to 6 kW - 4 mm², 7,5 - 9,0 kW - 6 mm²

19
Electrical Installation
►7,5 kW heater output
Attention!
Make sure to observe the connection diagram attached to the terminal box of the sauna heater.
U V W NPE
(Gr)N N
X Y Z
7,5 kW
1500 W 1500 W 1500 W 1500 W 1500 W
9 kW = 6x 1500W
10 kW = 6x 1666W
*12 kW = 6x 2000W
►9,0 | 10,0 | 12,0 kW heater output (single-circuit version)
7,5 kW = 5x 1500W
5.6 Internal wiring
*) 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
U V W X Y Z
NNN
PE (Gr)
U V W X Y Z
NNN
PE (Gr)
SSG PEB
SSG - sauna control unit, PEB - power extension box
►12,0 kW heater output (dual-circuit version)
12 kW = 6x 2000W