eta ePEK 140 Instruction Manual

2022-04-12
EN
0000000452
V.006
3.55.0
5306, 01
939075-001
Pellet boiler
ePE-K 140-170 kW
Operation

ETA Heiztechnik
Gewerbepark 1
A-4716 Hofkirchen an der Trattnach
Tel: [phone] / 22 88 -0
Fax: [phone] / 22 88 -22
[email protected]
www.eta.co.at

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Contents
1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Warranty, guarantee and liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2 Safety devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Empty the ash box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5 ETAtouch controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1 Getting to know the control system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1.1 User interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.1.2 Text menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1.3 Integrated help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1.4 Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1.5 Inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1.6 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.1.7 meinETA remote control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.1.8 Favourites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.1.9 USB camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.2 [Boiler] function block - ePE-K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.2.1 Operating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.2.2 Text menu - Adjustable parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.3 [BufferFlex] function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.3.1 Setting the buffer charging times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.3.2 Setting warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.3.3 Buffer with solar heating system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.3.4 Buffer as a combination tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
5.3.5 Text menu - Adjustable parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.4 [Hot water tank] function block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.4.1 Setting the hot water charging times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.4.2 Text menu - Adjustable parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.5 [Fresh water module] function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
5.5.1 Setting the hot water charging times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.5.2 Text menu - Adjustable parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5.6 [Heating circuit] function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
5.6.1 Operating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.6.2 Setting the heating time slots. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.6.3 The heating curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
5.6.4 Text menu - Adjustable parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
5.7 [Solar] function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
5.7.1 Solar heating system with one tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
5.7.2 Solar heating system with 2 tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
5.7.3 Solar heating system for buffer with 2 internal coils. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

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5.7.4 Solar heating system with external heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
5.7.5 Solar heating system with external heat exchanger and stratified charging valve. . . . . . . . . 62
5.7.6 Text menu - Adjustable parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
5.8 [Aux.boiler] function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
5.8.1 Setting the charging times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.8.2 Text menu - Adjustable parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.9 [External heat demand] function block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5.9.1 Setting the charging times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
5.9.2 Text menu - Adjustable parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
5.10 [Heating pipeline] function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
5.11 [Pellet store] function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
5.12 [Pellet store with switch unit] function block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
5.12.1 Text menu - Adjustable parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
5.13 Function block [precipitator] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
6 Rectifying problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
6.1 Ash screw. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
6.2 Tilting grate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
6.3 Heat exchanger cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
7 Information on fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
8 Emission measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
8.1 Information about measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
8.1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
8.1.2 Flue pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
8.1.3 Adjustable parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
8.2 Perform emissions measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
9 Low-emission operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
10 Heating water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
10.1 Water hardness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
10.2 Refilling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
11 Energy Labelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

General Preface
5
1 General
1.1 Preface
Dear customer,
This user manual provides important information and
instructions, to ensure safe and satisfactory operation
of your product. Please take the time to look through it.
Warranty and guarantee
You should also read the "Conditions for warranty,
guarantee, liability" (see chapter 1.3 "Warranty,
guarantee and liability") carefully. As a rule, a
professional heating technician shall satisfy these
conditions. Nevertheless, inform the technician of our
warranty conditions. All of the requirements we impose
are intended to prevent damage that neither you nor
we wish to occur.
Read the user manual
Please read the user manual carefully before starting
up the system. This is the only way to ensure that you
can operate your new boiler efficiently and with
minimum environmental impact.
Take advantage of the knowledge and skills of an
expert
Only allow an expert to assemble, install and
commission the equipment and carry out the basic
boiler settings. Insist on receiving an explanation and
training on how your new boiler functions and how to
operate and maintain it.
Extended warranty
We grant an extended warranty if the product is
commissioned by an authorised partner company or
by our own customer service. In this regard, please
note the warranty conditions applicable at the time of
purchase.
Service agreement
You can ensure the best care for your heating system
by taking out a service agreement with one of our
certified contractors or our own customer service.
Remote control of the boiler via the internet
The remote control enables you to operate your ETA
boiler remotely via your own network (VNC Viewer) or
the internet <www.meinETA.at> using a PC,
smartphone or tablet, as though you were standing
right in front of the ETAtouch control system of your
ETA boiler. A LAN cable is required for the connection
from the ETAtouch control system to the internet
modem.
Details for the remote control can be found in the
manual "Communication platform meinETA".
Details for the connection of the LAN cable can be
found in the boilers installation manual.
1.2 General information
Copyright
All contents of this document are property of ETA
Heiztechnik GmbH and are protected by copyright.
Any reproduction, transfer to third parties or use for
other purposes is prohibited without written permission
from the owner.
Type plate
On the product you will find the type plate with the
manufacturer's number of your product. The serial
number and the version number are contained in the
manufacturer's number. In case of enquiries, please
have the manufacturing number ready for identification
of your product. Enter your manufacturing number
here.
1 Serial number
2 Version number
Subject to technical changes
We reserve the right to make technical modifications
without notice. Printing and typesetting errors or
changes of any kind made in the interim are not cause
for claims. Individual configurations depicted or
described here are only available optionally. In the

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Warranty, guarantee and liability General
event of contradictions between individual documents
regarding delivery scope, the information in our current
price list applies.
Software Description
The software version described in this documentation
corresponds to the version valid at the time of
publication. The software version installed on your
product may differ from that described in this
documentation.
A software update to a more recent version can
always be performed. With the appropriate
authorisation, the required files can be found at
"www.eta.co.at".
Explanation of symbols
Instructions and information
Layout of safety instructions
SIGNAL WORD!
Type and source of danger
Possible effects
• Measures for avoiding the danger
Types of safety instruction
CAUTION!
On non-compliance with this safety instruction, there is
a risk of material damage.
WARNING!
On non-compliance with this safety instruction, there is
a risk of physical injury.
DANGER!
On non-compliance with this safety instruction, there is
a risk of major physical injury.
1.3 Warranty, guarantee and liability
Requirements
We can only accept liability for the function of our
products if they are correctly installed and operated.
This is only possible if the conditions below are
complied with.
Maximum of 2,000 hours at full load per year
The boiler described in this user manual may only be
used for heating and producing hot water, with no more
than 2,000 full-load hours annually.
Installation in a dry room
For set-up, a dry room is required. In particular, only
condensation dryers may be used as clothes dryers in
the same room.
Observe local building and fire safety regulations
Local building and fire safety regulations must be
observed.
Suitable fuel
The boiler is suitable for use with wood pellets
according to EN ISO 17225-2:2014, quality class A1,
ENplus-A1. Operation with unsuitable fuels, in
particular those containing halogens (chlorine) or high-
slag pellets such as from grain waste, is not permitted.
Ensure supply air is free from aggressive
substances
The air supplied to the boiler must be free from
aggressive substances such as chlorine and fluorine
from solvents, cleaning agents, adhesives and
propellants, or ammonia from cleaning agents, to
prevent corrosion of the boiler and chimney.
Permissible water hardness
Water is the intended heat-transfer medium. For
special anti-frost requirements, up to 30% glycol may
be added. Softened water is required for the initial fill-
up of the heating system and for refilling after repairs.
Addition of hard water should be minimised to limit
limescale build-up in the boiler.
In order to protect the boiler from calcification, the
water hardness of the heating water must be
taken into account. Observe the indications outlined in
ÖNORM H 5195-1. Details can be found in chapter 10
"Heating water".
pH value between 8 and 9
The pH value of water used to fill the heating system
must be between 8 and 9.
Use a sufficient number of shut-off valves
Set enough shut-off valves to avoid bleeding large
amounts of water during repairs. Any leaks in the
system must be repaired at once.

General Warranty, guarantee and liability
7
Install safety valve and thermal relief valve
A safety valve (triggered at 3 bar) as protection against
excess pressure and a thermal relief valve (triggered
at 97 °C) to protect against overheating must be
installed by the contractor.
Provide a sufficiently large expansion tank or a
pressure maintaining device
To prevent air from being drawn in while the system is
cooling, the heating system professional must provide
a sufficiently large expansion tank or a pressure
maintaining device.
Open expansion tanks must not be used.
Sufficient power
Operation at lower power than the lowest power
specified on the type plate is not permitted.
Expanding the control system
Only components provided by us may be used for
expanding the control system, unless these are
generally available standard devices, such as
thermostats.
Regularly perform cleaning and maintenance
Cleaning and maintaining the product is essential. The
required steps and intervals are either contained in this
documentation or included as a separate document.
Repairs
Repairs are only permitted using spare parts provided
by us. The only exceptions are common standardised
parts such as electrical fuses or fastening materials, as
long as they possess the required features and do not
restrict the functionality of the system.
Proper installation
The installing contractor is liable for proper installation
according to the corresponding installation instructions
and the relevant rules and safety regulations. If you as
customer have installed the heating system partly or
entirely without relevant training and in particular
without up-to-date practical experience, without having
the installation checked by a trained and responsible
expert, we exclude defects in our delivery and
consequential damages resulting from this cause from
our warranty, guarantee and liability.
Repair of defects
For repairs of defects carried out by the customer or by
a third party, ETA shall only bear the costs or remain
obligated by warranty if this work was approved in
writing in advance by the customer service of ETA
Heiztechnik GmbH.
No tampering with boiler safety devices
Boiler safety devices such as those mentioned below
must not be tampered with: Temperature monitoring
and control devices, safety temperature limiters, safety
valves and thermal discharge valves.
Potential equalization is needed for the boiler
The boiler must be connected to the potential
equalization of the boiler room or the building. Country-
specific regulations must be observed.
Surface corrosion
Surface corrosion on the inside of the precipitator is no
cause for concern. It does not impair the function.
Surface corrosion does not entitle to warranty or
guarantee claims.

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Description
2 Description
Operating elements of the boiler
The illustration shows a boiler with the pellet bin
on the left side. The illustration is also equally
representative of a boiler with the pellet bins on the
right side.
1 Release button for safety temperature limiter
(STB)
2 Mains switch (symbol )
3 Maintenance switch (symbol )
4 Screen for the ETAtouch control system
5 Door contact switch
6 Combustion chamber door
7 Insulation door
8 Lever to lock the ash box in boiler
9Ash box

Description
9
The firebed switch as well as the firebed level sensor
are located behind the cover on the front of the boiler.
1 adjustable firebed switch
2 Firebed level sensor with potentiometer
The firebed level sensor measures and controls
the height of the firebed. The firebed switch is a
safety switch that triggers if the firebed is too high.
Explanation of the maintenance switch
The maintenance switch on the boiler is needed for
performing maintenance with the aid of the
[Maintenance] function in the ETAtouch control
system. This displays the individual maintenance
steps on the boiler screen.
With this variant the heating mode is stopped, but
the boiler remains on at the mains switch. So that
all drives are disconnected, the safety chain of the
boiler is disrupted with the maintenance switch. The
screen will display a message when it is time to actuate
the maintenance switch.
Fig. 2-1: Maintenance switch
The maintenance switch is marked with the
symbol and has two settings.
•"1" = regular operation
This is the standard position of the maintenance
switch. The boiler can execute heating mode in this
position.
•"0" = maintenance mode
In this position, all drives are disconnected to
perform maintenance. The circuit boards,
however, are still live.
Display maintenance steps on the screen
With this boiler, the maintenance steps can also be
displayed on the ETAtouch control system screen. The
required activities will be explained to you step-by-step
and supplemented with detailed graphics. Each
maintenance is saved and the details can be viewed at
any time. So you can maintain a long-term overview of
the maintenance carried out. Of course, the
maintenance can also be carried out using the service
guide, without the support of the ETAtouch control
system.
To access maintenance, switch to settings in the boiler
function block ( [Settings] button) and then select
the function [Maintenance].
Fig. 2-2: Overview (example)
You can also access this overview by pressing
the maintenance switch. Also when the message
appears that maintenance of the boiler is required.
In the overview the different maintenance intervals are
listed in the upper area. This includes the maintenance
already carried out. With the button, information
about the selected maintenance is displayed.
Maintenance that you can carry out as an end
customer is labelled with the symbol. All others are
reserved for specialists and require authorisation.

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Description
Press the button to start the maintenance. The
individual steps are displayed on the screen. You can
switch to the next or the previous screen respectively
with the arrow keys on the left and right side of the
screen.
Fig. 2-3: Maintenance step (example)
Follow the on-screen instructions and carry out all
steps carefully. Enter your name at the end of
maintenance ( button) and save the maintenance
with the button.
Fig. 2-4: End of maintenance
To end maintenance prematurely, press the right
arrow key several times until you get to the end.
There you can end the maintenance with the
button. Cancellation during a maintenance step is not
possible.
Adjust the hinges for the screen
The ease of movement of the hinges to swivel the
screen can be adjusted with the Allen key supplied. If
the screen does not remain in its desired position,
tighten the screws on the hinges a little.
Fig. 2-5: Hinges
Adjustable damping of the heat exchanger
cleaning
There is a lever on the rear of the boiler with which the
damping of the heat exchanger cleaner is set. If high
quality fuel is used, there is less ash in the turbulators
or they get dirty less often. The heat exchanger
cleaning therefore does not require the full force for
remove the ash from the turbulators.
Fig. 2-6: Lever

Description
11
This then allows damping of the heat exchanger
cleaner to be set when high quality fuel is used.
This is done by engaging the lever in one of the lower
positions. The impact noise of the cleaning is also
reduced by this.
Fig. 2-7: Positions
1 No damping (full force)
2 Highest damping (less force)
For fuels with poorer quality (many impurities,
high ash content, high water content), no
damping may be set. Therefore, engage the lever in
the top position.
Clean panels
If necessary, clean the panels of the boiler and the
ETAtouch screen with a moist cloth.
Under no circumstances use aggressive
solvents, chemicals or scouring agents. They can
lead to stress cracks and damage.
Protection function for drives and pumps
Lets you switch on the boiler in summer, or
outside the heating period on the main switch. As
the ETAtouch control system starts some drives and
pumps for a short time at regular intervals so that they
do not seize in the event of a longer standstill.
If the boiler is switched off for a longer time on the
mains switch, then this protection function is missing.
Drives or pumps could then seize and cause faults
when being switched back on.
Burn-back protection also when filling
The authorities or the chimney sweep often require
that a notice saying "CAUTION! A sticker with the text
"Switch off boiler before filling" must be affixed, easily
visible, to the filling nozzle covers. Since we at ETA
don't want to leave the burn-back safety of our boilers
to chance, we equip all ETA pellet boilers with a rotary
valve, so that even during operation there is no open
connection between the combustion chamber and the
pellet store. Though it is not required that an ETA pellet
boiler be switched off while filling the pellet store, you
should do so anyway if the refuelling truck driver
requests it.

12 www.eta.co.at
General information Safety
3 Safety
3.1 General information
Operation only by trained personnel
The product may be operated by trained adults only.
Training may be provided by the heating technician or
our customer service. Please read the associated
documentation carefully in order to avoid errors during
operation and maintenance.
Persons who lack experience and knowledge as well
as children may not operate, clean, or maintain the
product.
Keep children away from the pellet store
Children must be kept away from the pellet store. It is
a good idea to lock the door to the pellet store. The
door handle on the inside of the pellet store must not
be removed. It must be possible to open the door from
the inside in an emergency.
Keep fire extinguishers in a clearly visible location
In Austria, the minimum requirement is an
ABC powder extinguisher with 6 kg. An AB foam
extinguisher with 9 litres, which produces less damage
when used, is preferable. The fire extinguisher should
be kept outside the boiler room, visible and easily
accessible. Even if country-specific regulations do not
prescribe a fire extinguisher, we still recommend that
you keep one in-house.
Fig. 3-1: Fire extinguisher
Storage of ash
The ash must be kept in non-flammable containers
with covers for cooling. Never put hot ash into the
waste bin!
DANGER!
Do not carry out work on high voltage units
If the product is equipped with an
electrostatic precipitator, the housing of the
high-voltage unit must not be opened or
damaged as there are parts inside it that
are under high voltage.
Failure to comply with the above may result in
serious or fatal injuries.
DANGER!
Caution high voltage!
If the product is equipped with an electrost
atic particle separator, the electrode inside
the precipitator can still have residual
voltage even after switching off the power
supply.
Therefore, switch off the boiler at the mains switch
and ensure that it cannot be switched back on
before starting work. Then establish additional
earthing between the electrode on the inside and
the housing of the precipitator.
3.2 Safety devices
Pump safety run, automatic heat dissipation at
overtemperature
If the boiler temperature exceeds 90°C (factory setting)
for any reason, the pump safety run will start. All
heating pumps and boiler pumps that are connected to
the boiler control system are switched on to dissipate
heat from the boiler.
This action prevents the boiler temperature from rising
further and triggering further safety devices such as
the safety temperature limiter and the thermal relief
valve.

Safety Safety devices
13
The heat dissipation is limited by the maximum
flow temperature set in the heating circuits and
the target hot water temperature.
Install thermal emergency cooling valve against
overheating
The safety heat exchanger built into the boiler must be
connected by the heating technician to the house's
cold water supply via a thermal relief valve to protect
the boiler against overheating if the pump fails. The
minimum pressure in the cold water pipe must be 2 bar
and the temperature must not exceed 15 °C.
Fig. 3-2: Thermal emergency cooling valve
Only thermal emergency cooling valves that
correspond to the standard DIN EN 14597 (or
comparable standards) may be installed. They must
activate at 100 °C and have a flow rate of at least
2.0 m³/h. The clear width of the cold water supply and
outlet may not fall below the nominal diameter of the
safety heat exchanger.
The cold water supply must be connected to the upper
connector of the safety heat exchanger; the lower
connector serves as an outlet to the sewer. To prevent
the supply line from being shut off accidentally, remove
the levers from ball valves or the hand wheels from
valves and hang them there with a piece of wire.
Fig. 3-3: Thermal emergency cooling valve
1 Cold water connection
2 Isolating valve; remove hand wheel
3 Strainer
4 Thermal emergency cooling valve
5 Visible outlet to sewer
The outlet must have an easily visible flow path so
malfunctions can be recognised. Direct the discharged
water to the sewer via a siphon funnel or at least with
a pipe into the ground so that nobody can be scalded
if the valve is activated.
Even for cold water coming from a domestic well with
its own pump, a thermal emergency cooling valve must
be installed on the boiler. With a generously
dimensioned air vessel, enough water for cooling will
come even if there is a power failure. If the power
supply is very uncertain, a dedicated air vessel for the
thermal emergency cooling valve is required.
Safety shutdown by safety temperature limiter
For additional safety against boiler overheating, a
safety temperature limiter is built into the boiler. When
a boiler temperature of 100 °C (tolerance +0/-6 °C) is
reached, the power supply is interrupted to the draught
fan and the fuel feed. When the boiler temperature falls
back below 70 °C, the safety temperature limiter can
be manually released for a restart of the boiler.
Installing a safety valve against overpressure
A safety valve with 3 bar opening pressure must be
installed on the boiler. Every heat producer in a heating
system must be protected by at least one safety valve
against pressure exceeding the maximum permissible
operating pressure (see EN 12828). These valves
must be designed such as to ensure the maximum

14 www.eta.co.at
Safety devices Safety
permissible operating pressure that can arise in the
heating system or parts thereof. The safety valve must
be situated in the boiler room and be easily accessible.
Fig. 3-4: Safety valve
DANGER!
Do not install any shut-off valves, strainers or such like
between the boiler and the safety valve.
The connection size of the safety valve is determined
on the basis of the heating system's maximum heating
capacity, as shown in the table.
A separate connection is already available on the
boiler for the safety valve (see following graphic).
The safety valve must be connected to it.
Fig. 3-5: Connection
The safety valve may be installed in any position, but
the upper part of the valve must not face downward.
The flow pipe may be 1 m long maximum and must be
routed in a straight line in the nominal diameter of the
valve inlet.
DANGER!
Safety valve outlet
The safety valve outlet must be directed to the ground
in a pipe so nobody is endangered by hot water or
steam.
The safety valve outlet (vent pipe) must have at
least the same nominal diameter as the valve
outlet, be installed with a consistent gradient and
be routed to a sewage system (e.g. duct). The vent
pipe may contain a maximum of 2 bends and be
2 m long. If a length of more than 2 m is required,
the next size of pipe must be selected. More than
3 bends and 4 m of length are not permitted. The
mouth of the vent pipe must allow easy inspection
and be routed such as to exclude any danger to
persons. If the vent pipe ends above a funnel, its
discharge pipe must have a cross section at least
double that of the valve inlet.
Valve sizea
Nominal diameter (DN)
a. The valve size is determined by the size of the inlet
connection.
Maximum heating ca-
pacity (kW)
15 (G ½) 50
20 (G ¾) 100
25 (G 1) 200
32 (G 1 ¼) 300
40 (G 1 ½) 600
50 (G 2) 900

Empty the ash box
15
4 Empty the ash box
Stop heating
Stop the heating mode of the boiler with the on / off
switch in the overview of the boiler. The boiler
emits a glowing charge and then switches to operating
mode [Switched off]. Then press the [De-ashing]
key to allow the boiler to perform a final ash removal.
Emptying the ash box and checking the seals
By knocking on the vertical wall of the ash box,
you can also check the ash level without opening
the box. A full ash box makes a short, dull thump.
When empty it makes a hollower sound like a drum.
To empty the ash box, fold the locking lever on the
boiler forward. Remove the ash box from the boiler.
Fig. 4-1: Locking lever
Close the flap on the ash box.
Fig. 4-2: Flap
Open the lock for the lid and empty the ash box.
Fig. 4-3: Lid
Check the ashes for pieces of embers. Never put
hot ash into the waste bin!
If there are large pieces of slag in the ash, the
combustion chamber and the tilting grate must be
checked and the de-ashing interval reduced if
necessary.
Check if the seal in the lid of the ash box is intact and
replace if necessary.
Fig. 4-4: Seal

16 www.eta.co.at
Empty the ash box
Check that the ash box seal on the boiler is intact and
replace it if necessary.
Fig. 4-5: Seal
Attaching the ash box to the boiler
Open the flap on the ash box.
Push the ash box over the connection on the boiler and
connect it to the boiler with the locking lever.
Switching on the boiler
Switch the boiler back on using the on / off
switch .

ETAtouch controller Getting to know the control system
17
5 ETAtouch controller
5.1 Getting to know the control
system
Get to know the control system
Take your time and read the following chapter
carefully. It describes the functions and settings of the
ETAtouch control for your heating system. If you are
familiar with these, it will be easier for you to make
adjustements, even without consulting the manual.
Design of the control system
The individual components of the heating system, e.g.
buffer, hot water tank or heating circuit are shown in
the control system as "function blocks". These are
listed in the uppermost row on the screen. The
respective user interface is opened with a single tap of
the finger.
Fig. 5-1: ETAtouch control system function blocks
1 Currently selected function block
2 Other function blocks, e.g. hot water tank, heating
circuit, solar heating system
3 Scroll to other function blocks (displayed if not all
function blocks can be displayed simultaneously)
4 This button opens an overview of all installed
function blocks. This allows the user to switch
between function blocks faster.
5 Help button. Details can be found in chapter 5.1.3
"Integrated help".
6 Settings of the selected function block
7 Date and time
8 Current outside temperature
9 Status of the remote control for the boiler (via
www.meinETA.at), see chapter 5.1.7 "meinETA
remote control"
10 System configuration

18 www.eta.co.at
Getting to know the control system ETAtouch controller
Several views are available for each function block. To
switch between these, tap on the symbol at
the top left. The selection of views appears.
Fig. 5-2: Selection of views
1 User interface
2 Text menu
3 Inputs and outputs menu
4 Messages menu
In the user interface, you can set the most
important and common settings. For example,
adjustment of the charging times, heating
times, room temperatures and operating modes are
contained in this list. Details can be found in chapter
5.1.1 "User interface".
The parameters of a function block are
displayed in the text menu and can be adjusted,
if necessary. See chapter 5.1.2 "Text menu".
The terminal assignment of individual
components, such as temperature sensors,
pumps and mixers, are visible within the input
and output menu, where they can be changed if
required. Also, for example, pumps and mixers can be
started in manual mode. This menu is intended for
specialists only. Details can be found in chapter 5.1.5
"Inputs and outputs".
Any hints, errors or faults are displayed in the
messages menu, see chapter 5.1.4
"Messages".
5.1.1 User interface
The user interface
The user interface is always displayed by default. If
you are in a different view, switch to the user view by
tapping the symbol (upper left) and then
selecting .
In the user interface, you can set the most important
and common settings. The display is dependent on the
selected function block. The illustrated example shows
the user interface of a heating circuit with a room
sensor.
Fig. 5-3: Heating circuit user interface
1 Operating condition and information
2 Producer for the heating circuit.
Currently, the buffer provides a feed temperature
of 25 °C to the heating circuit.
3 Current room temperature
4 On/off switch for the heating circuit
= switched on
= switched off
5 Increase or decrease the room temperature
6 Function block settings.
In this menu, the settings and functions most
commonly used can be stored. For the heating
circuit, for example, the heating times and the
heating curve are adjusted here.
7 Graphic display of the heating times and room
temperatures settings
8 Different operating modes of the heating circuit

ETAtouch controller Getting to know the control system
19
5.1.2 Text menu
Adjust parameters in the text menu
To enter the text menu, tap in the upper left on the
symbol, followed by . In the text menu, the
required parameters for the control system of the
function block are listed. Modifiable parameters are
indicated by the symbol.
Fig. 5-4: Text menu
1 Parameter
2 Current value or setting
3 Editable parameter
4 Other settings, such as adding the parameter to
Favourites
Changing a parameter is simple. Select it and tap on
the symbol. The settings window appears.
Fig. 5-5: Settings window
1 Factory setting and adjustment range
2 Reset to factory setting
3 Save and close
4 Cancel and close
The default setting and the setting range are displayed
on the right side. The new value is entered with the
keypad, and stored by pressing the [Save] button.
Resetting to factory settings is done by pressing the
[Factory settings] button. To cancel and close the
window, tap the arrow on the left side of the screen.
Only modify parameters whose function you're
familiar with. Before making any changes, read
the relevant section of the user manual or
configuration manual, or open the integrated help
feature. If you cannot find sufficient information about
a parameter, please consult a specialist.
Commonly used parameters can be found in the
settings
Commonly used parameters can be found in the
function block settings ( button). There, the
parameters are identified by the symbol and can be
adjusted by tapping. This saves you having to search
through the text menu for these parameters.
5.1.3 Integrated help
How to use the integrated help
Use the integrated help to find information. This
appears when the button is pressed. If help is
activated, annotations will appear in the user interface
in blue fields.
Fig. 5-6: Activated help in the user interface

20 www.eta.co.at
Getting to know the control system ETAtouch controller
Fields with additional line symbols on the right
side (example: ) indicate that further
information is available. Tap on the appropriate field
and a window with the description will open. Close the
window using the arrow on the left side.
Fig. 5-7: Description
The help function can also be accessed via the text
menu. A detailed description is available for all the
parameters displayed in blue writing. Just tap on a
parameter and a window will open with the description.
Fig. 5-8: Activate help in the text menu
To turn off help, press the button again.
5.1.4 Messages
An error message appears
If an error occurs, a symbol of the type of error appears
at the top of the screen in the corresponding function
block. This is also displayed at the bottom of the
screen.
Fig. 5-9: Error message
Types of errors and their meaning
• Message
A message does not interrupt operation, and
therefore no acknowledgement is required.
Messages inform the user, for example, that the
blocking protection of the pumps has been
activated.
• Warning
A warning is displayed when a function that is not
absolutely essential for continued operation has
failed. It can be acknowledged before the cause of
failure is remedied. However, it will continue to be
displayed until the cause has actually been dealt
with.
• Fault or alarm
A fault or alarm stops operation. Some of these
can be acknowledged before the cause of the
problem is remedied. However, they will continue
to be displayed until the cause has actually been
dealt with. Other errors and alarms can only be
acknowledged after the cause has successfully
been remedied. Once an error or alarm has been
resolved and acknowledged, you must restart the
boiler or the affected function block.