EOS Herkules XL S120 User manual

Druck-Nr.: 2902 3553
Stand: 30/20
EN
Made in Germany
EOS Herkules XL S120
EOS Herkules XL S120 Vapor
Heater for Sauna Cabins
Installation and Operating Instructions

2 Installation and Operating Instructions - EOS Herkules XL S120
Documentation
EN
Documentation
Manufacturer
Original installation instructions EN
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 com-
munication of its contents without express authorisation, are not permit-
ted. Compensation will be claimed in the event of infringements.
All rights reserved with regard to patent claims or submission of design or
utility patent.
Characters, symbols and illustrations
Revision history
EOS Saunatechnik GmbH
Schneiderstriesch 1
35759 Driedorf, Germany
Tel. [phone]
Fax [phone]
Web www.eos-sauna.com
Additional information about an operating step
Cross-reference to a page
Read instructions
Result of a step
Table title
Title of figure
Date Version Description
30 July 2020 01.00 First version

EOS Herkules XL S120 - Installation and Operating Instructions 3
Contents
Documentation.........................................................................................................2
1 General safety instructions.................................................................................5
1.1 Safety levels.......................................................................................................5
1.2 Mounting and electrical installation ........................................................6
1.3 Operator instruction ......................................................................................7
1.4 Standards and regulations ........................................................................11
2 Identification ...........................................................................................................12
2.1 Requirements for operation .....................................................................12
2.2 Nameplate.......................................................................................................12
2.3 Scope of delivery...........................................................................................13
2.4 Technical data ................................................................................................15
2.5 Intended use...................................................................................................16
3 Installation................................................................................................................18
3.1 Specifications for the cabin.......................................................................18
3.1.1 Installation site ..............................................................................19
3.1.2 Air inlets and outlets....................................................................20
3.1.3 Connection cable..........................................................................22
3.2 Installing the temperature sensor in the cabin..................................23
3.3 Specifications for the control unit ..........................................................24
3.4 Mounting the sauna heater.......................................................................24
4 Connections..............................................................................................................27
4.1 Connection diagrams for sauna systems with Herkules.................27
4.2 Sauna heater circuit diagrams..................................................................34
4.3 Vaporiser circuit diagrams
(EOS Herkules XL S120 Vapor only) ........................................................37
4.4 Establishing an electrical connection....................................................38
4.5 General instructions for electrical installation....................................42
4.6 Heating time limitation...............................................................................43
4.7 EOS Herkules XL S120 Vapor: connecting the water supply ........43
4.8 Positioning the heater.................................................................................46
5 Commissioning .......................................................................................................49
5.1 Filling stones...................................................................................................49
5.2 Starting the heater........................................................................................50
5.3 Commissioning by remote control.........................................................50
5.4 Water splash....................................................................................................51
5.5 Commissioning the vaporiser
(Herkules XL S120 Vapor only) .................................................................52

4 Installation and Operating Instructions - EOS Herkules XL S120
EN
6 Maintenance............................................................................................................ 53
6.1 Cleaning........................................................................................................... 53
6.2 Sauna stones.................................................................................................. 54
6.3 Herkules XL S120 Vapor: descaling the vaporiser ........................... 55
6.4 Herkules XL S120 Vapor: cleaning the vaporiser ............................. 57
6.5 Replacing the tubular heating elements............................................. 60
6.6 Troubleshooting........................................................................................... 63
7 General terms and conditions of service .................................................. 64
8Disposal..................................................................................................................... 67

EOS Herkules XL S120 - Installation and Operating Instructions 5
General safety instructions
General safety instructions
1.1 Safety levels
Safety instructions and important operating instructions are clas-
sified. Please familiarise yourself with the following terms and
symbols:
WARNING
Warning
Indicates a hazardous situation which, if not avoided, could result
in death or serious injury.
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.

6 Installation and Operating Instructions - EOS Herkules XL S120
General safety instructions
EN
1.2 Mounting and electrical installation
These installation instructions are intended for qualified person-
nel familiar with the laws and regulations applicable to electrical
installations at the installation site. Observe the following general
safety instructions during mounting, configuration and commis-
sioning 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 im-
proper or faulty electrical connection. This risk also applies follow-
ing completion of the installation work.
The electrical installation of the heater, vaporiser, relay boxes
and other electrical systems or equipment with a fixed mains
connection must only be performed by a trained electrician
from an authorised electrical company.
Ensure compliance with the standards and regulations for elec-
trical installation in your country.
The system must be disconnected and removed entirely from
the mains supply before commencing installation and repair
work.
The housing cover must only be removed by a specialist.
Fire hazard from
overheating
Insufficient ventilation can lead to device overheating and fire.
Install the air inlet and outlet in the cabin.
Observe the cabin manufacturer's safety and installation in-
structions.
Risk of burns from
hot glass
Glass surfaces in the cabin become hot while the sauna is in oper-
ation.
When installing the cabin, ensure that the touchable glass sur-
faces on the outside of the cabin may reach a maximum tem-
perature 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.

EOS Herkules XL S120 - Installation and Operating Instructions 7
General safety instructions
1.3 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 fire arises in the event
of improper repair work. This risk also applies after work is com-
pleted.
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 sauna heaters can easily be ignited and
cause fires.
Do not place objects on the sauna heater.
Fill the rock store as directed.
If you switch on the heater using pre-set timers or a remote con-
trol, attach a protective cover to the heater or install a suitable
safety device.
Inspect the sauna cabin prior to each recommissioning and en-
sure that no towels, cleaning agents or other objects are lying
on the sauna heater or vaporiser.
Risk of fire due to
substances in holder
The holder must not be used if the heater is operated without the
vaporiser function (Finnish sauna mode). Substances in the holder
pose a risk of fire because they can easily be ignited.
Never place herbs or similar substances/objects in the holder if
the heater is being operated without the vaporiser function.
Observe the manufacturer's specifications when adding sauna
essences to the water.
Never leave herbal sachets in the holder if the system has a con-
trol unit with a post-heating time option; they could dry quickly
and catch fire.

8 Installation and Operating Instructions - EOS Herkules XL S120
General safety instructions
EN
Risk of fire 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 floor made of easily
flammable material (laminate or synthetic flooring, etc.). Ce-
ramic tiles are recommended as a flooring option.
Risk of scalding from
hot steam
There is a risk of scalding from hot steam at the steam emission
outlet when using the vaporiser (Herkules XL S120 Vapor only).
The steam escapes from the long side of the holder.
Add essences and herbs to the holder only from the front.
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 overheat-
ing 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 per-
ception 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.
Floor heating in the sauna cabin results in additional warming
of the legs and can lead to health risks.
Water connection Prevent water from flowing from the water supply and the box for
the heater's water level control (Herkules XL S120 Vapor only)
back into the piping system for potable water.
Close the shut-off valve if the connection to potable water is not
used for an extended period of time.

EOS Herkules XL S120 - Installation and Operating Instructions 9
General safety instructions
Water lime content Lime deposits can impact the ability of the vaporiser to function
properly (Herkules XL S120 Vapor only).
If the water has a lime content of more than 1.3 millimole of cal-
cium oxide per litre (hardness class I or hardness levels 1–7 in
Germany), we recommend installing a decalcification system. If
a decalcification system is not installed, you must manually des-
cale the vaporiser regularly. The higher the lime content in the
water used, the more often the vaporiser must be descaled.
Operating the unit This unit may be used by children 8 years or older and by persons
with reduced physical, sensory or mental abilities or persons with
no experience or knowledge of the unit, if they are under supervi-
sion or have been instructed in how to safely use the unit and they
understand the associated risks. Children must not play with the
unit. Cleaning and maintenance must not be performed by chil-
dren.
Children must be supervised to ensure they do not play with
the unit.

10 Installation and Operating Instructions - EOS Herkules XL S120
General safety instructions
EN
Sauna cabin and
heater
The sauna cabin must be constructed with proper material and
built in a professional manner, and the heater must be suited for
the cabin.
The sauna heater may be installed only in sauna cabins made
from suitable, low-resin, and untreated material, e.g. Nordic
spruce or other materials suitable for sauna construction.
One or more than one sauna heater may be installed in a sauna.
The heater output must be able to accommodate the cabin vol-
ume in all cases. If multiple heaters are used, depending on
their 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 specifically designed and approved for this type of installa-
tion.
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 below or behind the sauna heater,
approx. 5 to 10 cm above the floor. The minimum dimensions
of the air inlets and outlets can be found here: 2.4 Technical
data, 15.
The exhaust openings are always installed in the lower part of
the wall diagonal to the sauna heater. The supply and exhaust
openings 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 fixed to a suitable location
on the cabin's external wall, and the corresponding sensor
housings according to the installation instructions that accom-
pany the control units inside the sauna cabin.
The cabin lighting must be safe for sauna cabin use and in-
stalled in such a way that it can be used safely in a sauna cabin.
Ensure that the heater is installed in compliance with the stand-
ards and legal norms valid in your country. In CENELEC member
states, the cabin lighting must be “protected from splash water”
as defined in DIN EN VDE 0100 T 703. Only one sauna light with
a maximum of 40 W may be installed with this sauna heater.
The cabin must not have a locking device that cannot be un-
locked as needed. We recommend magnetic or spring locks.

EOS Herkules XL S120 - Installation and Operating Instructions 11
General safety instructions
1.4 Standards and regulations
For an overview of the standards that were observed during design and
construction of the sauna heater, please refer to the individual product's
technical data sheet that can be downloaded from
www.eos-sauna.com.

12 Installation and Operating Instructions - EOS Herkules XL S120
Identification
EN
Identification
Herkules is an electrically heated Finnish sauna heater available in a variety
of output capacities. The ‘vapor’version also has an installed vaporiser that
can be used to operate a steamy hot-air bath.
2.1 Requirements for operation
The sauna heater must be operated together with one control unit and one
output controller. They are not included in the scope of delivery.
The sauna heater can be operated with one of the following control units:
EOS EmoStyle
EOS Emotec
EOS EmoTouch
EOS ECON
The output controllers required depend on the output capacity of the
sauna heater. See EOS Herkules XL S120 – sauna heater data, 15
2.2 Nameplate
Nameplate
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
Elektro-Saunaofen
Type (26Herkules XL S120
Art.-Nr. 94 XXXX 0X
400V 3N AC 50 Hz XX kW
Made in Germany S-No. 14.20 00001
EOS-SAUNATECHNIK GmbH, 35759 Driedorf
IPX4
A
B
C
E
F
H I
D
G

EOS Herkules XL S120 - Installation and Operating Instructions 13
Identification
2.3 Scope of delivery
Check the unit upon delivery to ensure that all components were delivered
and
that it 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:
Scope of delivery
Herkules XL S 120 Vapor comes with a pre-mounted mains water connec-
tion (FWA01) on the rear side. Herkules XL S 120 does not have this pre-
mounted mains water connection.
A Sauna heater, pictured: EOS
Herkules XL S120 Vapor
B Holder
C Warning plate with 2 screws
D Sauna stones (8 bags)
E Installation instructions
F Base mount for holder
A DB C
E
F

14 Installation and Operating Instructions - EOS Herkules XL S120
Identification
EN
Accessories (optional)
A sauna heater guard rail may be placed around the upper edge of the
heater. It prevents accidental contact with hot parts of the heater. The
heater guard rail consists of four brackets and a wooden frame.
CAUTION
Skin burns from hot surfaces
If the sauna heater is placed too close to a bench, there is risk of ac-
cidental contact with hot surfaces. This could lead
to burns.
The optional heater guard rail does not offer sufficient protection
in this specific installation configuration.
Increase the distance.
During the installation, mount a suitable heater guard rail for
the heater.
To ensure that the sauna heater is switched off or remains off if, for exam-
ple, a towel is lying on it, it can be equipped with a safety device. The safety
device consists of a stainless-steel rocker switch and a shut-off system. If an
object is pushing on the rocker switch, the heating process is interrupted
or does not start.
A light barrier can also be used to monitor whether objects are lying on the
sauna heater. The light barrier is fixed to the ceiling and the reflector is
mounted on the sauna heater.
A door supervision device can be used to determine if an unauthorised
person has entered the sauna.
Heater guard rail (optional) Item no.
Heater guard rail bracket (bracket and guard rail made of
wood)
94.5679
Safety device (optional) Item no.
Safety device type 5 94.4725
Heater monitor (optional) Item no.
EOSafe L with 25 mm reflector 94.7151
EOSafe L with 50 mm reflector 94.7150
Door supervision device (optional) Item no.
EOSafe D 94.7149

EOS Herkules XL S120 - Installation and Operating Instructions 15
Identification
The door supervision device can be purchased together with the heater
monitor.
2.4 Technical data
The sauna heater is operated by a sauna control unit.
All line cross-section specifications are the minimum cross-sections of a
copper line.
EOS Herkules XL S120 – electrical connection data
EOS Herkules XL S120 – sauna heater data
Heater monitor/door supervision device combination
(optional) Item no.
EOSafe L & D with 25 mm reflector 94.7153
EOSafe L & D with 50 mm reflector 94.7152
Heater
output
Electrical
connec-
tion
Fuse protection Connections
Control
unit LSG Mains – control unit
Mains –
LSG
Control
unit – heater LSG – heater Control unit – LSG
18 kW 400 V
3N AC
50 HZ
3 x 16 A 3 x 16 A 5x2.5mm² 5x2.5mm² 5x1.5mm² 5x1.5mm² 4 x 1.5 mm²
24 kW 3 x 16 A 3 x 35 A 5x2.5mm² 5x6mm² 5x1.5mm² 5x4mm²
30 kW 1x16A 3 x 63 A 3x1.5mm² 5 x 16 mm² – 2 x (5 x 4 mm²)
Heater
output
Unit dimen-
sions
HxWxD in
cm
For sauna
cabin size
Minimum
size of air
inlet and
outlet
Weight
without
rocks
Stone filling Relay boxes Suitable con-
trol unit
18 kW 85 x 96 x 53 24–35 m³ 50 x 6 cm approx. 8
5kg
2x60kg EMOTEC L09 R EmoStyle
Emotec
EmoTouch ECO
N
24 kW 35–45 m³ 50 x 8 cm LSG 18
30 kW 45–65 m³ 50 x 10 cm LSG 36

16 Installation and Operating Instructions - EOS Herkules XL S120
Identification
EN
EOS Herkules XL S120 Vapor – electrical connection data
EOS Herkules XL S120 Vapor – sauna heater data
2.5 Intended use
This sauna heater is intended solely for the purpose of heating sauna cab-
ins, together with a suitable control unit and one relay box.
Herkules is a sauna heater that stands on the floor. It is suitable for cabins
for commercial use.
Any use beyond this is considered improper use. Proper use also includes
compliance with operating, maintenance and servicing requirements.
The manufacturer is not responsible for unauthorised modifications and
damages resulting from these modifications; the person modifying the
equipment alone shall bear the associated risk.
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 or persons with reduced mental capac-
ity or by persons who have not been thoroughly instructed in its use.
Heater
output
Electrical
connec-
tion
Fuse protection Connections
Control
unit LSG Mains – control unit
Mains –
LSG
Control
unit – heater LSG – heater Control unit – LSG
18 kW 400 V
3N AC
50 HZ
3 x 16 A 3 x 16 A 5x2.5mm² 5x2.5mm² 5x1.5mm²
4x1.5mm²
5x1.5mm² 4x1.5mm²
24 kW 3 x 16 A 3 x 35 A 5x2.5mm² 5x6mm² 5x1.5mm²
3x1.5mm²
5x4mm²
4x2.5mm²
30 kW 1x16A 3 x 63 A 3x1.5mm² 5 x 16 mm² 3x1.5mm² 2 x (5 x 4 mm²)
1 x (4 x 2.5 mm²)
Heater
output
Vaporiser
output
Unit dimen-
sions
HxWxD in
cm
For sauna
cabin size
Minimum
size of air
inlet and
outlet
Weight
without
rocks
Stone
filling Relay boxes Suitable control unit
18 kW 3kW 85 x 96 x 53 24–35 m³ 50 x 6 cm approx.
85 kg
2x60kg EMOTEC L09 R EmoStyle Hi
Emotec H
EmoTouch E
CON H
24 kW 3kW 35–45 m³ 50 x 8 cm LSG 18 H
30 kW 4kW 45–65 m³ 50 x 10 cm LSG 36 H

EOS Herkules XL S120 - Installation and Operating Instructions 17
Identification
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 synchronized.
Observe the specifications 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 (convec-
tion) 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 which temperatures of approx. 110°C are achieved
directly below the ceiling. These temperatures drop to approx. 30–40°C
in the cabin along the floor. Therefore, it is not unusual that if the tem-
perature sensor above the sauna heater reads 110°C, the thermometer
that is mounted approx. 20–25 cm below the cabin ceiling on the cabin
wall reads only 85°C. 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 for the control units.
The first time the cabin is heated, you may notice a slight odour result-
ing from the evaporation of consumables used in the manufacturing
processes. Air out your cabin once it has been heated and before using
the sauna.

18 Installation and Operating Instructions - EOS Herkules XL S120
Installation
EN
Installation
This chapter describes how to install the sauna heater. The sauna heater is
not designed to be installed or set up in an alcove or under a bench or
sloping roof unless this sauna heater is specifically designed and approved
for this type of installation. Prior to installing the unit, air inlets and outlets
must be attached to the cabin. It may be necessary to mount additional
fans in the inlets/outlets. All protective films must be removed.
3.1 Specifications for the cabin
The cabin must be planned and installed according to specifications before
the sauna heater is installed.
The floor on which the sauna 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 material (laminate, flooring made of plastic material,
etc.). Ceramic tiles are recommended as a flooring option.
Electrical lines
All electrical installations laid inside the cabin must be suitable for silicone
cables and 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.
If single-core lines are used as connecting cables, they must be protected
by a flexible metal hose that is connected to the protective conductor.
The minimum cross-section of the connecting cable and the suitable cabin
size in relation to the connecting cable in kW can be found here:
2.4 Technical data, 15.
Clearances
The measurements for clearances can be found in the figures in the chap-
ter 3.1.1 Installation site, 19.
When installing the sauna heater, ensure that the vertical clearance
between the top edge of the sauna heater and the cabin ceiling is
observed. The distance between the lower edge of the sauna heater and
the floor can be found in the dimension drawing. The clearance for stand-
ing heaters is determined by the base or the supporting feet.
The amount of clearance required between the sauna heater and the
heater's protective grill or the sauna bench and other flammable material
can be found in the dimension specifications for the respective sauna
heater. The height of the heater's protective grill must equal approximately
the height of the front of the sauna heater.

EOS Herkules XL S120 - Installation and Operating Instructions 19
Installation
Observe the requirements and instructions of the cabin manufacturer as
well.
3.1.1 Installation site
Ceiling height of at least 210 cm
Distance from top edge of sauna heater to cabin ceiling min. 125 cm
Distance from sauna heater to cabin wall min. 8 cm
Distance from sauna heater to bench min. 8 cm
Distance from sauna heater to flammable material min. 8 cm
The required cabin volume depends on the heater output.
See 2.4 Technical data, 15
Minimum distances in the cabin in cm
A Cabin ceiling D Sauna heater
B Temperature sensor E Air inlet
C Cabin wall F Heater guard rail
≥ 12585
8
~ 51
8
~ 85
≥ 210
96 53
8
A
DD
CC
F
E
A
B
B

20 Installation and Operating Instructions - EOS Herkules XL S120
Installation
EN
Minimum distances to the sauna heater in cm
3.1.2 Air inlets and outlets
WARNING
Risk of fire due to insufficient ventilation
The sauna heater can overheat if the air supply is insufficient.
There is a risk of death due to fire.
Ensure that the air inlets and outlets provide sufficient ventila-
tion. Install a fan if necessary.
Commission the cabin only after all air inlets and outlets have
been opened.
NOTICE
Heating process delayed
If the heating process takes a long time, the underlying reason is
that the sauna heater receives insufficient air.
A minimum of 5 times the cabin volume of air per hour must be
exchanged.
A Cabin wall C Heater guard rail
B Sauna heater
96
8 8
8
8
53
B
A
C