2012-01-30 EN
PelletsCompact
20 to 32 kW
Operation
Operation PC 20 to 32 kW, Software 1.20.0
2011-12
Contents
Conditions for warranty, guarantee, liability .... 4
Emission measurement ............................... 6
Operation with external air supply ................ 7
Chimney .................................................. 8
Boiler functionality .................................... 9
Maintenance ...........................................10
Overview of activities ................................ 10
Every 2,200 kg ........................................11
Check boiler pressure .............................11
Empty the ash box ................................ 12
„Empty ash box“ reminder ...................... 13
After 6,000 kg ......................................... 14
Empty ash box, check boiler pressure .........14
Clean flue tube ....................................14
Remove flue ash from chimney ................. 14
Clean combustion chamber ...................... 15
Expert maintenance after 10,000 kg ..............17
Approval, antifreeze, pressure equalisation,
venting .................................................. 22
Softened heating water, Safety valve ............23
Buffer, hot water tank...............................24
Overtemperature, safety temperature limiter .. 25
Operation ............................................... 26
Adjusting the date and time ........................26
Changing the language .............................. 27
Renaming function blocks ...........................28
Error, Alarm, Warning, Message ....................29
Opening the text menu ..............................30
Heating circuit ....................................36
Overview, buttons, functions ....................... 36
Operating modes ...................................... 38
Heating time slots ..................................... 40
Heating curve .......................................... 42
„Day and Night Heating threshold“ ................ 43
Adjusting the heating curve ......................... 44
Setting the „enable temperature“ .................46
Adjusting the „Set-back“ ............................ 47
Room sensor with remote control .................48
Pellet store .......................................49
Overview, buttons, functions ....................... 49
Entering stock .........................................50
Store with switching unit .................... 51
Overview, buttons, functions ....................... 51
Locking and changing heads ........................ 53
Entering stock .........................................54
The „Switching at“ parameter ...................... 54
Remote Control ........................... 55
Requirements .......................................... 55
Changing the operating mode ...................... 56
Functions not available via remote control ....... 57
Opening the touch screen ...........................58
Logging out ............................................ 59
Changing personal details ........................... 60
Efficient and low-emission operation ............61
Service and maintenance records .................62
Safety instructions ....................................64
Boiler .............................................31
Overview, buttons, functions ....................... 31
Operating modes ...................................... 32
Changing the fill-up time ............................ 33
Filling up the storage tank .......................... 33
Adjusting the ash removal idletime ................ 34
Changing the deashing interval .................... 35
2
Subject to change due to technical improvements
Meanings of symbols
Important NOTICES for operation.
CAUTION: Failure to observe these notices can
result in property damage.
STOP: Failure to observe these notices can result in
personal injury.
www.eta.co.at
Preface
Dear customer,
We are delighted to count you among our customers.
To ensure satisfactory operation of your new boiler,
you need to know how to operate, clean and
maintain it. This manual contains information and
advice on much more than just the boiler itself.
Warranty and guarantee
You should also read the "Warranty, guarantee and
liability conditions" (page 4) carefully. As a rule,
these conditions will be satisfied by a professional
heating technician. 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.
Information worth knowing in this regard can also
be found from page 22.
Please read this 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 make the basic
boiler settings. Insist on receiving an explanation
and training on how your new boiler functions and
how to operate and maintain it.
Optimum use of the ETAtouch control system
installed in our boilers
There are two different access levels for the control
system:
At the CUSTOMER level, you can adjust the control
system to your wishes and needs without any risk of
altering the system configuration set by the heating
system expert.
Only your technician or a customer service employee
should change settings at the SERVICE level. Before
making any adjustments to these settings yourself, it
is essential that you consult an expert.
Operation PC 20 to 32 kW
Extended warranty for commissioning performed
by an authorised partner company
If your newly installed boiler is commissioned by an
authorised partner company or one of our customer
service employees, we offer an extended warranty.
Refer to our warranty conditions in effect 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.
2011-12
3
Conditions for warranty, guarantee, liability
We can only guarantee and accept liability for the
function of our boiler if it is properly installed and
operated.
Requirement for warranty, guarantee and liability
is that this boiler be used in accordance with its
intended purpose, only for heating and hot
water supply with no more than 2,000 fullload hours annually, and, in particular, that the
following general conditions be observed during
installation and operation:
For set-up, a dry room is required. In particular,
only condensation dryers may be used as clothes
dryers in the same room.
Local building and fi re protection regulations must
be observed.
The connecting pipe to the chimney must be
constructed with a maximum diameter of 130 mm
and at least 30 mm of insulation. For lengths
over 2 m, correspondingly more insulation is
needed.
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 fi ll-up of the heating system and for
refi lling after repairs. For the initial fi ll-up of the
heating system and for refi lling, the lime content
of all water in the heating system may not exceed
the value of 20,000 lt°dH (system volume in litres
multiplied by the hardness in degrees of German
hardness).
The pH value should be set between 8 and 9.
Set enough shut-off valves to avoid bleeding large
amounts of water during repairs. Any leaks in the
system must be repaired at once.
To protect against air suction if the system cools
off, an expert must provide a suffi ciently large
expansion tank or a pressure maintenance
system. Suffi cient air venting must also be
ensured. Open expansion tanks or underfl oor
heating with permeable piping also have a
high air intake, resulting in above-average boiler
corrosion. Corrosion damage to the boiler due to
improper air venting or high air intake is excluded
from warranty, guarantee and liability.
The boiler is suitable for use with wood pellets
according to ÖNORM M 7135, DIN 51731,
EN 14961-2 class A1, EN plus class A1 or DINplus
with a diameter of 6 to 8 mm and a length of 15
to 40 mm. Operation with unsuitable fuels, in
particular those containing halogens (chlorine) or
high-slag pellets such as from grain waste, is not
permitted.
The combustion air must be free of aggressive
substances such as chlorine and fl uorine
from solvents, cleaning agents, adhesives and
propellants, or ammonia from cleaning agents, to
prevent corrosion of the boiler and chimney.
Operation at lower power than the lowest power
specifi ed on the type plate is not permitted. For
design outputs that are considerably less than
the boiler's rated output, either a reduction of
the heating time slots or a buffer storage tank is
required.
Only components provided by us may be used
for expansion of the control system, except for
commonly used units such as thermostats.
Cleaning and maintenance are required as
specifi ed in the user manual.
4
Subject to change due to technical improvements
www.eta.co.at
Conditions for warranty, guarantee, liability
Repairs are only permitted with 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.
The installing contractor is liable for proper
installation according to the boiler's 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.
For repair of defects carried out by the
customer or by third parties, ETA only bears the
costs or remains obligated by warranty if this work
was approved in advance by the customer service
of ETA Heiztechnik GmbH.
Subject to technical alterations
We reserve the right to make technical
modifi cations without notice. Printing and
typesetting errors or changes of any kind made
in the interim are not cause for claims. Individual
confi gurations depicted or described here are only
optionally available. In the event of contradictions
between individual documents regarding delivery
scope, the information in our current price list
applies.
Operation PC 20 to 32 kW
2011-12
5
Emission measurement
Why measure emissions?
It is a requirement for the carbon monoxide
(CO) emissions of every boiler to be measured
periodically. In Germany, this periodical
measurement must also include a dust
measurement.
There are several aspects of this that could go
wrong, resulting in incorrect measurements even
though the boiler fully and consistently complies
with these limits when operating in accordance
with the relevant standards.
2 to 3 days before measurement, the boiler
and boiler tube must be cleaned thoroughly
The chimney sweep will contact the owner of the
boiler when the measurement is due to take place.
The boiler and boiler tube must be cleaned
thoroughly 2 to 3 days before the measurement
takes place. Once this is complete, the heating can
continue to be used as normal.
Boiler temperature at least 65°C
Before emission measurement, pellet boilers must
have been heating for at least 15 minutes, and
the boiler temperature must be at least 65°C.
Wood chip boilers must have been heating for
at least 30 minutes, and the boiler temperature
must be at least 65°C.
Switching the boiler to emission measuring mode
Press to switch the boiler to emission
measuring mode. This button lights up green to
confi rm the change.
min. 65°C
This delay between cleaning and measurement is
necessary in order to allow dust disturbed during
cleaning to settle again. If the chimney sweep
measures unsettled dust, the dust reading will be
higher than normal and thus inaccurate.
Under no circumstances clean the
boiler and fl ue tube on the day of the
measurement!
If possible, switch the boiler off before
measurement
If possible, switch the boiler off 3 to 5 hours
before measurement using the on/off button
Ensure that there is suffi cient heat consumption
and then switch the boiler back on
The boiler is now run at full load for 30 minutes.
The control system ensures that suffi cient heat
is channelled to the heating circuits and the hot
water tank.
Wait for 5 to 10 minutes, then measure
the emissions
Once emission measuring mode has been activated,
wait for 5 to 10 minutes until the boiler has
reached the required operating temperature and
stable combustion can be guaranteed. Then carry
out the emission measurement.
.
After the measurement
Switch the boiler back to normal mode by pressing
again.
Open all the radiator valves and turn the radiator
thermostats to maximum.
Finally, switch the boiler back on using the on/off
button (
6
Subject to change due to technical improvements
button lights up green).
If this button is not pressed, the boiler will
automatically switch back to normal mode after
30 minutes.
www.eta.co.at
Operation with external air supply
Heating appliances, cooker hoods and
central vacuum cleaners need air supply
To keep ventilation heat losses under control,
airtightness (blower door test) is a crucial issue in
today's new buildings.
In an airtight house, the boiler receives air from the
outside via a dedicated pipe. This is described as
"operation with external air supply".
A cooker hood or a central vacuum cleaner also
need air in order to generate suction. Without an
air supply, their effectiveness tends towards zero.
Worse yet, underpressure results inside the house,
which can cause combustion gases to be sucked
into the living quarters if a pellet boiler with
external air supply is installed there.
There are several different ways to ensure the
air supply for cooker hoods and central vacuum
cleaners:
Air supply via blinds
The slats in the blinds open due to the pressure
difference and admit air into the room. This
solution is safe and simple but can be an
unpleasant source of leaks in rooms with
mechanical ventilation (controlled ventilation
of living quarters).
Air supply via motorised flap
An air inlet damper (diameter approx. 300 mm) is
opened when the cooker hood or central vacuum
cleaner is switched on. Only when the open
position is reached is the fan for the cooker hood
or central vacuum cleaner activated via a position
switch in the flap actuator.
To avoid condensation
on the air supply duct,
it must be insulated against cold.
Air supply from the ventilation system
If an open air supply path is guaranteed for all of
the ventilation system's operating conditions, then
the ventilation system can be used to supply air to
the cooker hood and central vacuum cleaner. This
is a simple and proven solution.
If a heat exchanger installed in the air supply path
is protected against frost by a shut-off damper, a
bypass damper for the heat exchanger is needed.
Recirculation cooker hood
a proven solution for passive houses
A recirculation cooker hood needs no air supply.
In passive houses with controlled ventilation in
the living quarters, this is the preferred solution to
keep the ventilation heat loss to a minimum.
Supply air position switch on window
The power supply for the cooker hood and central
vacuum cleaner is only activated when the
window is open or tilted.
If the outside temperature is low, condensation can
form on the cold pipe surface. An air supply duct
separate from the chimney needs to be insulated
against condensation (with tightly sealed plastic
foam insulation) to prevent structural damage
along the duct's path through the house.
If the duct goes through the chimney, the air
will be preheated slightly. It this case, it may be
possible to forego insulation if no damage results
from the condensation on a few cold days.
Operation PC 20 to 32 kW
2011-12
7
Chimney
Chimney renovation before it's too late
Compared to older boilers, modern ones are much
more efficient and have lower amounts of flue gas
with considerably lower temperatures.
Flues with "too large a cross-section" (over 18 cm)
in particular are no longer heated adequately. The
moisture contained in the exhaust gases condenses
in the flue and in this way leads to very slow but
inexorable destruction of old masonry chimneys.
Furthermore, if the diameter of the flue is too large,
the exit velocity and temperature are too low. The
flue gas then lacks the energy to rise and in extreme
cases, the smoke can sink down along the roof.
If your flue does not have a moisture-resistant
lining or its diameter is too large, it will need to be
renovated with the addition of a moisture-resistant
inner lining. Narrow flues can also be renovated
with stainless steel pipes.
Also keep in mind that chimneys have a limited
service life. Timely renovation before the chimney
wall has been destroyed can be performed quickly
and easily by inserting a tube. But if the flue gas
condensates have penetrated the mortar joints, then
the entire flue must be dismantled and rebuilt.
Sealed connection pipe to chimney
A sealed flue pipe is an absolute necessity. Joints can
be sealed with heat-resistant silicone (300 °C) and/
or pure aluminium tape to prevent the escape of
dust or flue gas.
Technical requirements for the flue
can be found in the installation instructions
(a separate document from this user manual).
8
Subject to change due to technical improvements
www.eta.co.at
Boiler functionality
1 Vacuum motor for pellets
2 Pellet bin
3 Metering screw
4 Rotary valve
1
5 Stoker screw
6 Movable, self-cleaning rotating grate
12
13
2
3
4
5
8
10
16
11
14
9
6
7
15
7
17
18
19
7 Ash screw
8 Detachable ash box
9 Hot stainless steel combustion
chamber
10 Heat exchanger
11 Agitated turbulators
12 Lambda probe
13 Draught fan
14 Return riser mixing valve
15 Boiler pump
16 Bypass
17 Flow
18 Return
19 Air connection for
operation with external air supply
The pellets are sucked with a vacuum motor (1)
from the storage room (up to 20 m away) into the
pellet bin (2) in the boiler. The pellet bin (2) has a
capacity of 60 kg. Suction takes place once a day
at a time that can be set as needed. Only on very
cold days might it be necessary for pellets to be
transported to the boiler a second time.
The pellets are fed from the pellet bin with the
metering screw (3) to avoid overfilling the rotary
valve (4); this avoids the need to cut pellets and
prevents wear on the sealing edges. The rotary valve
(4) separates the pellet bin from the combustion
chamber to prevent back burning in the pellet bin.
The stoker screw (5) pushes the pellets into the
combustion chamber.
The pellets are burned on the movable grate (6).
Automated cleaning takes place during pauses in
combustion. The grate is rotated against a comb,
cleaning the air gaps in the grate.
When restarting, the pellets are ignited with a
ceramic igniter.
Beneath the grate and the heat exchanger, two ash
screws (7) move the ash to a detachable ash box
(8); with its 24-litre capacity, the box only needs to
be emptied two to three times per heating season.
In an uncooled, hot combustion chamber made of
stainless steel (9), hot and complete burnout occurs
before the combustion gases transfer the heat to the
boiler water in the heat exchanger (10). Movement
of the turbulators (11) cleans the heat exchangers
automatically once a day.
The boiler pump (15) and the return riser mixing
valve (14) for the return riser are already integrated
in the boiler. The safety valve, a pressure gauge
with water shortage switch-off, and an air vent
in the boiler outlet are also built in.
The lambda probe (12) together with the variablespeed draught fan (13) ensures high efficiency.
The boiler can be operated with an external air
supply (19) using a heat-resistant air supply duct.
Operation PC 20 to 32 kW
2011-12
9
Overview of activities Maintenance
Regular cleaning and servicing
To ensure that the boiler operates optimally and
reliably, it must be cleaned and serviced at regular
intervals. These intervals depend primarily on the
pellet consumption.
However, maintenance and cleaning must be
performed within the specified duration (once per
year, every 3 years).
Cleaning and maintenance overview
The table provides an overview of the required
cleaning and maintenance.
The "to be done by" column indicates which
activities you as customer can deal with and which
must be performed by an expert.
Interval every
Activity
Check boiler pressure X X X Customer
Empty the ash box X X X Customer
Check safety valve(s) X X X Customer
Clean flue tube X X Customer
Remove flue ash from chimney X X Customer
Clean combustion chamber and flue collector box in front of fan X X Customer
Inspect heat exchanger tubes for pitch deposits X X Customer
Vacuum out lambda probe (do not remove it) X X Customer
Clean draught fan and fan housing, replace seal X Expert
Clean flue gas temperature sensor X Expert
Check firebed level sensor X Expert
Clean fill level sensor on pellet bin X Expert
Lubricate drive chains for stoker, cleaner and grate X Expert
Inspect ash box position switch and seals X Expert
Check strainer in pellet bin X Expert
Measuring orifice and hoses on differential pressure transmitter X Expert
Inspect seal on heat exchanger cover X Expert
Perform emission measurement X Expert
Calibrate lambda probe X Expert
Check safety temperature limiter X Expert
Reset maintenance counter X Expert
2,200 kg
or at least
1x yearly
6,000 kg
or at least
1x yearly
10,000 kg
or at least
3 years
to be done by
10
Subject to change due to technical improvements
www.eta.co.at
Maintenance Every 2,200 kg
Maintenance every
2,200 kg of pellets
After every 2,200 kg of pellets or at least once
per heating season, check the boiler pressure and
adjust it if necessary.
Also check how full the ash box is and empty it.
Boiler
TU 4.4.2011 11:25:45
Reminder: check ash box after 2200 kg
Counter reset when ash box removed. Empty out ash,
check water pressure and safety valve. See user manual.
Check boiler pressure
Warning message "Water pressure too low"
For "Water pressure too low" (warning at
1.5 bar and shutdown at 1.0 bar), fill the cold
heating system to approx. 1.8 bar and the hot
heating system to approx. 2.2 bar.
Confirm the warning message and restart the
heating with the on/off switch .
Alarm "Water pressure too high"
After a shutdown "Water pressure too high"
(over 2.8 bar), let the boiler cool. Then drain
water to reduce the current pressure by 0.2 to
0.4 bar.
Boiler
TU 4.4.2011 11:25:45
Water pressure too high 2,90 bar
Water pressure exceeds maximum value. Decrease
pressure or check sensor!
In the overview of the "Boiler" function block, the
current pressure in bar is displayed.
Boiler pressure between 1.6 and 2.5 bar
The boiler pressure should be at least 1.6 bar
for a cold heating system and no more than
2.5 bar for a hot heating system.
If the boiler pressure is too low
If the boiler pressure is too low (under 1.6 bar),
fill the cold heating system to approx. 2.0 bar.
Do not fill to a higher pressure as water expands
with increasing temperature and the pressure
will continue to rise while heating up to the full
operating temperature.
Confirm the alarm and restart the heating with the
on/off switch .
Check safety valve
Check the safety valve to ensure that it is closed
tightly. The outlet must not drip.
Perform further steps only on weekdays,
never on weekends in a cold winter as there will
probably be no heating technician available if the
seal is defective. If the valve drips, open the safety
valve with a quarter turn of the red cap and rinse
it out (danger of scalding). If the valve still cannot
be closed tightly after being rinsed several times, it
must be cleaned by a plumber or replaced. If a solar
buffer is equipped with a safety valve, check that
as well.
Siphon funnel
Operation PC 20 to 32 kW
2011-12
11
Overview of activities Maintenance
Empty the ash box
The control system issues reminders about
emptying the ash box after a set pellet
consumption.
The factory setting is 2,200 kg of pellets. If the ash
box is only partly full or overfilled, this value can
be changed. See page 13.
Stop heating,
draught fan switched off
Before emptying the ash box, switch off the boiler
in the overview with the
performs a burnout.
Only when the draught fan is switched off and the
boiler status "Switched off" is displayed on the
screen is the burnout complete; then the ash box
can be removed.
button. The boiler
Open the side latches
Open the side latches by pressing the safety catch
in the direction of the arrow. Pull the ash box
straight out from the front of the boiler.
Safety catch
Open latch
Empty the ash box; are there any embers?
Check the ash to see if there are any embers
present. Do not put hot ash in the waste bin due
to risk of fire.
Push up the front panel
The front panel stays in place in every position.
Ash box
Inspect the seals on the boiler.
Check the integrity of both seals. If the seals are
damaged, the boiler can draw in leak air. That
would reduce the boiler output.
Inspect seals
Attach ash box, restart heating
Reattach the ash box to the boiler and secure it
with the side latches.
In the "Boiler" overview, restart the boiler with the
on/off button
heating if required.
. The boiler automatically starts
12
Subject to change due to technical improvements
www.eta.co.at
Maintenance Overview of activities
"Empty ash box" reminder
The ash box should be emptied regularly. As such,
the factory settings contain a pellet consumption
level at which a reminder to empty the ash box
appears.
If the ash box is only part full after this time, the
value in the "Empty ashbin after" parameter can be
increased. If the value is set to zero, the message
will no longer appear. The fi lling level must then
be checked manually at regular intervals.
Boiler
TUE 4/4/2011 11:25:45
Reminder: check ash box
A settings screen opens:
Counter reset when ash box removed. Empty out ash,
check water pressure and safety valve. See user manual.
Changing the "Empty ashbin after" setting
Press the buttons and to go to the text
menu.
Tap the [Boiler] line and, in the submenu, tap the
[Ash removal] line.
Double-tap the [Empty ashbin after] line.
Enter the new pellet consumption value after
which a reminder will appear to empty the ash
box, then press to confi rm.
Press the
button to return to the overview.
Operation PC 20 to 32 kW
2x
2011-12
13
After 6,000 kg Maintenance
Maintenance after 6,000 kg of pellets
When 6,000 kg of pellets have been used, a
screen message appears to notify of the need for
maintenance.
This maintenance must be performed at least once
per heating season.
Boiler
TU 4.4.2011 11:25:45
Cleaning after 6000 kg
Reminder for periodic cleaning of the boiler according to
user manual.
Confirm the message and then begin with the
maintenance.
Empty the ash box, check the boiler pressure
Clean flue tube
Brush out the connection pipe from the flue outlet
to the chimney if it is longer than 0.5 m.
Empty the ash box and check the boiler pressure.
See page 11 and page 12.
Stop heating,
let boiler cool for at least 2 hours
Before starting this maintenance, stop the current
heating operation. In the "Boiler" overview, press
the on/off button
Then let the boiler cool off for at least 2 hours
before starting the maintenance.
.
Remove flue ash from chimney
Use a vacuum cleaner to remove the flue ash from
the chimney.
Clean the condensate drain.
14
Subject to change due to technical improvements
www.eta.co.at
Maintenance After 6,000 kg
Clean the combustion chamber and flue
collection box
To gain access to the combustion chamber and the
flue collection box in front of the fan, the panel
on top of the boiler and the heat exchanger cover
must be removed.
Removing panels
Loosen the screw next to the flue pipe and press
the button on the side of the panel. Then the
panel can be removed from the top of the boiler.
Screw
Clean with the poker
Use the poker (stored behind the front panel
above the ash box) to remove the combustion
chamber cover from the combustion chamber and
scrape the ash from the walls. Sweep the ash into
the combustion chamber and the tubular heat
exchanger.
Combustion chamber coverFlue collection box
Lift off insulating cover
Remove heat exchanger cover
Loosen the wing nuts and remove the cover.
Remove the ash, which is now on the grate and in
the tubular heat exchanger, from the boiler with
an ash removal.
An ash removal can be started by pushing the
button in the "Boiler" overview.
The turbulators do not need to be
removed.
Are there tar deposits on the tubular heat
exchanger?
If there are tar deposits on the tubular heat
exchanger, contact customer service. The cause for
the incorrect air measurement must be identified
and corrected (leak air through lambda flange or
heat exchanger cover, incorrectly calibrated lambda
probe, incorrect differential pressure measurement
at the air intake).
Operation PC 20 to 32 kW
2011-12
15
After 6,000 kg Maintenance
Clean the lambda probe
The head of the lambda probe is accessible.
Vacuum it with a vacuum cleaner.
Do not remove the lambda probe.
Head of lambda probe
Clean and insert the combustion chamber cover
Clean the combustion chamber cover and insert it
into the combustion chamber.
Put on heat exchanger cover,
insulating cover and panel
Replace the heat exchanger cover and fasten it
with the wing nuts.
Replace the insulating cover.
Inspect seal on heat exchanger cover
Clean the heat exchanger cover and check the
integrity of the seal.
16
Subject to change due to technical improvements
Replace the panel on the top of the boiler.
Screw
The maintenance is now completed.
www.eta.co.at
Maintenance Expert maintenance after 10,000 kg
Maintenance after 10,000 kg
by an expert
When 10,000 kg of pellets have been used, a
screen message demands maintenance by an
expert.
This maintenance must be performed by an expert
no later than every 3 years.
Boiler
TU 4.4.2011 11:25:45
Maintenance by professional after 10000 kg
Reminder for maintenance by professional. See also user
manual.
If the valve still cannot be closed tightly after
being rinsed several times, it must be cleaned or
replaced.
Buffer storage tanks with solar charging must also
be equipped with a safety valve; its seal must also
be checked.
To permit this inspection, the valve's outlet must
be routed through an exposed area, either via a
siphon funnel leading to the sewer or a pipe to the
floor (to prevent scalding).
Draught fan and fan housing
Remove the draught fan and clean it. Also clean
ash from the fan housing.
If necessary, replace the draught fan seal.
Firebed level sensor
In preparation, perform the maintenance
for 2,200 kg and 6,000 kg
For the 10,000 kg maintenance, the maintenance
work required after the consumption of 2,200 kg
and 6,000 kg of pellets must also be performed.
Check safety valve
Check the safety valve to ensure that it is closed
tightly. The outlet must not drip.
Siphon funnel
Check the movement of the firebed level sensor
(overfill protection).
Check fill level sensor on pellet bin
and strainer in pellet bin
Remove the fill level sensor on the pellet bin. Do
not take apart the sensor itself, but open the larger
inspection cover. Use a marker to mark the cover
and the bin so that you can reinstall the cover in
the right orientation after the maintenance work.
Clean the sensor with a soft cloth.
Tap and vacuum the strainer on the inlet to the
vacuum motor.
Inspect the seal on the inspection cover and
reinstall the cover with sensor.
If it drips, open the safety valve with a quarter
turn of the red cap and rinse it out. Only rinse the
safety valve on a weekday, never on weekends in
a cold winter as there will probably be no heating
technician available if the valve no longer seals.
Operation PC 20 to 32 kW
2011-12
17
Expert maintenance after 10,000 kg Maintenance
Drive chains for stoker, cleaner and grate
Lubricate the drive chain for the stoker with spray
oil and check the chain tension. The chain can be
tensioned by shifting the motor.
Lubricate the drive chain for the grate and cleaning
drive with spray oil. To do so, start ash removal by
pressing
can be completely lubricated.
to start the chain moving so that it
Ash box position switch and seals
Verify the function of the position switch for the
ash box. Inspect both of the ash box seals and
replace if necessary.
Test measuring orifice and hoses
on differential pressure transmitter
With the boiler switched off and hoses removed
from the differential pressure transmitter, a
measured value of 0 Pa must be displayed.
Otherwise, the measuring orifice must be
calibrated; see page 20.
Check the hoses of the differential pressure
transmitter at the air intake and blow them out if
necessary. The hoses may not be kinked or crossed.
Check seal,
close heat exchanger cover
Check the seal on the heat exchanger cover, replace
it if necessary, and close the heat exchanger cover.
Perform emission measurement
Perform the emission measurement with a
measuring device on the boiler; see page 6.
Switch the boiler into emission measurement mode
with the
to ensure that the heat is dissipated.
If no measuring device is available, at least the
lambda probe must be calibrated.
button. The consumers are activated
Safety temperature limiter
Check the function of the safety temperature
limiter.
Reset maintenance counter
After maintenance, the maintenance counter
must be reset to zero. The "Service" access level is
required to do this.
Check heat exchanger tubes
Remove the heat exchanger cover.
Check the heat exchanger tubes for pitch deposits.
If tar deposits are present, contact our customer
service.
Calibrate lambda probe
If no emission measurement is possible, the
lambda probe must be calibrated with the heat
exchanger cover open; see next page.
18
Subject to change due to technical improvements
www.eta.co.at
Maintenance Expert maintenance after 10,000 kg
Automatic calibration of the lambda probe
The boiler's built-in lambda probe checks the
residual oxygen content of the fl ue gas and uses
this to control the combustion. In order to ensure
that this works correctly, the boiler automatically
calibrates the lambda probe at regular intervals
(factory setting: every 500 h).
Calibrating the lambda probe with the
"Additional calibration" software function
The access level "Service" is required for calibration.
If you wish to perform an additional calibration
between the automatic intervals, you can start the
calibration using the software function "Additional
calibration". When this is activated, the boiler
automatically stops heating, de-ashes and rinses
the boiler with fresh air using the draught fan. The
residual oxygen content is then measured and the
lambda probe is automatically calibrated to the set
value.
Starting the "Additional calibration" function
In the submenu, scroll down and double-tap on
the [Additional calibration] line.
2x
The calibration process takes approx. 45 minutes.
Opening the boiler text menu
Using the access level "Service", open the text
menu by pressing
Tap the [Inputs] line. In the submenu, tap the
[Residual O2] line.
and .
In the selection window that appears, press the
[On] button and confi rm with .
The lambda probe is calibrated automatically
The control system will now automatically calibrate
the lambda probe.
After 100 hours, the control system will
automatically re-calibrate the probe.
In the overview
Press to return to the boiler overview. The
boiler is now in
Once calibration is complete, the boiler
automatically returns to operation and begins
heating as required.
Calibrating lambda probe
mode.
Operation PC 20 to 32 kW
2011-12
19
Expert maintenance after 10,000 kg Maintenance
Differential pressure transmitter
The "Measuring orifice" signal from the differential
pressure transmitter must show a measured value
of 0 Pa when the boiler is switched off and both
hoses are disconnected. The measurement must
be calibrated in the event of deviating measured
values. The "Service" access level is required to
do this.
Differential pressure transmitter
Calibrating the differential pressure measurement
Tap the [Offset] parameter twice and enter the
difference from the target value of 0 Pa in the
settings window, e.g.:
Measuring orifice 2 Pa --> Offset = -2
Measuring orifice -4 Pa --> Offset = 4
If a deviation of more than +/- 10 Pa is shown, the
differential pressure transmitter must be replaced.
Switch off the boiler with the on/off button
. As soon as the boiler status is "Switched
off", detach both hoses from the differential
pressure transmitter.
Using the "Service" access level, tap the [Inputs]
line in the boiler's text menu. Select [Measuring
orifice] from the submenu and read the current
value.
For a correct measurement, the value for the
[Measuring orifice] parameter must be 0 Pa.
2x
Blow out the hoses on the differential pressure
transmitter and reconnect them. The hoses may
not be kinked or crossed.
The boiler can then be returned to operation.
20
If a deviating value is shown, the measurement
must be calibrated.
Subject to change due to technical improvements
www.eta.co.at
Maintenance Expert maintenance after 10,000 kg
Safety valve
Firebed level sensor
Drive chains for
cleaner and grate
Drive chain for stoker
Fill level sensor
Operation PC 20 to 32 kW
Hoses for differential
pressure transmitter
2011-12
21
Approval, antifreeze, pressure equalisation, venting
Pressure equalisation
For pressure equalisation in the system, a
diaphragm expansion tank with a gross capacity of
around 10% of the system volume is needed (see
conditions for guarantee and warranty).
An 18-litre expansion tank is already installed
on the PU 7-15t boiler. This is enough for typical
underfl oor and radiator systems. If there is a buffer
storage tank, an additional expansion tank is
needed.
All shut-off valves along the path from the
(hang on the valve with a wire) to ensure that they
Approval
Every heating system must be approved.
Inquire at you building authority and ask your
chimney sweep.
Operation only by trained personnel
The system may be operated only by trained
personnel. Instruction can be given by the heating
installer or our customer service. Please read this
user manual to be assured of avoiding errors in
operation and maintenance of the boiler.
Children must be kept away from the boiler
room and pellet store.
Antifreeze
If a house with average insulation is unoccupied
in winter at low temperatures for more than fi ve
days, check once a week (twice a week for very
low temperatures) to make certain that the boiler is
operating properly.
If the building is unoccupied in winter for longer
intervals, up to 30% antifreeze can be added
to the heating water. To compensate for the
disadvantage of reduced heat capacity and
increased fl ow resistance, only slightly higher fl ow
temperatures are needed.
Insulate contact sensors
Pressure equalisation
For pressure equalisation in the system, a
diaphragm expansion tank with a gross capacity of
around 10% of the system volume is needed (see
conditions for guarantee and warranty).
An 18-litre expansion tank is already installed
expansion tank to the boiler and to the buffer
on the PU 7-15t boiler. This is enough for typical
storage tank must be capped valves, or the hand
underfl oor and radiator systems. If there is a buffer
wheels or levers must be removed from the valves
storage tank, an additional expansion tank is
needed.
cannot be closed by accident.
All shut-off valves along the path from the
If the pressure difference between cold and warm
expansion tank to the boiler and to the buffer
heating system (buffer fully loaded if installed)
storage tank must be capped valves, or the hand
is greater than 1.0 bar for a single-fl oor system
wheels or levers must be removed from the valves
or 0.5 bar for a three-storey system, then the
(hang on the valve with a wire) to ensure that they
expansion tank is too small and absolutely must
cannot be closed by accident.
be replaced with a larger one. If the installed
If the pressure difference between cold and warm
expansion tank is not large enough, the system
heating system (buffer fully loaded if installed)
sucks in air when cooling and the air is absorbed
is greater than 1.0 bar for a single-fl oor system
by the cold water and transported to the boiler.
or 0.5 bar for a three-storey system, then the
At the point of highest temperature, the air
expansion tank is too small and absolutely must
separates from the water again. This is the usual
be replaced with a larger one. If the installed
situation in the boiler, and the inevitable result
expansion tank is not large enough, the system
is that the boiler wall will rust through at these
sucks in air when cooling and the air is absorbed
places.
by the cold water and transported to the boiler.
At the point of highest temperature, the air
separates from the water again. This is the usual
Venting
situation in the boiler, and the inevitable result
is that the boiler wall will rust through at these
Automatic venting valves in the boiler outlet, at
places.
the highest point in the distribution network and
at the top of the buffer signifi cantly reduce the
danger of rust and also the frequency of radiator
venting.
Venting
22
If the pipe in the vicinity of a contact temperature
sensor is not insulated (e.g. in externally installed
heating circuit groups), lower than actual
temperatures will be measured. For this reason,
pipe insulation may not be recessed or weakened
for heating circuit fl ow sensors. For uninsulated
piping systems, the measurement area must be
insulated with mineral wool at least 20 mm thick
over a length of at least 20 cm of pipe.
Subject to change due to technical improvements
Automatic venting valves in the boiler outlet, at
the highest point in the distribution network and
at the top of the buffer signifi cantly reduce the
danger of rust and also the frequency of radiator
venting.
www.eta.co.at
Softened heating water, Safety valve
Initial fi ll-up with softened water and
enough shut-off valves
All relevant standards demand softened water for
heating systems with larger water volumes.
For the boiler a value of 20,000 lt°dH for system
volume in litres multiplied by the hardness
(in degrees of German hardness) may not be
exceeded.
A system volume of 300 litres (boiler and heating
elements) and very hard water with 30°dH yields
a value of 9,000 lt°dH. In this case, the system can
still be fi lled with unsoftened water.
For a heating system with a 1000-litre buffer, for
example, the total volume is 1300 litres. Even with
water that is not very hard, such as 20°dH, a value
of 26,000 lt°dH results; that is too high. For a
volume of 1300 litres, the water must be softened
to less than 15°dH (20,000 divided by 1,300).
Around 0.25 kg of limescale will precipitate from
a cubic metre of water with 15°dH, resulting in
a limescale layer 0.2 mm thick on a quarter of
a square metre of the boiler's heat exchanger
surface; this small area in the boiler is where the
lime build-up is concentrated. This may not seem
serious, but with 2 m³ of buffer storage and a
system volume of 0.5 m³, a thickness of 0.5 mm
is reached. Thicker layers hinder the heat fl ow
through the boiler wall to the extent that it is no
longer cooled suffi ciently and heat stress cracks can
form.
In practice, that means the boiler can tolerate a
buffer fi lled with unsoftened water as long as
no repairs and no leaks in the system (defective
air valves or safety valves that fail to close) force
water to be refi lled during the further course of the
system's service life.
to keep the lime content to a minimum during
water additions.
Protection against corrosion
To limit corrosion with softened water, the
pH value should be adjusted to between 8 and 9
using suitable inhibitors (trisodium phosphate).
Safety valve against overpressure
Install a safety valve with 3 bar opening pressure
on the boiler (is already installed for PU and
PC boilers). No shut-off valve may be installed
between the boiler and the safety valve. If solar
or other heat sources provide energy to the buffer
storage tank via a heat exchanger, a safety valve
(3 bar maximum) is also required on the buffer
storage tank. Normally an expansion tank that is
too small or defective, or blocked heating lines, are
the cause for activation of the safety valve.
The safety valve must be on top of the boiler in
the fl ow in order to also discharge heat in an
emergency. Only this way can it discharge heat
when it blows out hot water and also steam.
The discharge must be directed to the sewer via
an easily visible, open fl ow path (siphon funnel)
so malfunctions and, above all, a non-closing
valve can be recognised. If no sewer is available,
the discharge must be directed into the ground in
a pipe so nobody is endangered by hot water or
steam.
To have a suffi cient safety reserve for additions,
the new system must be fi lled with softened
water, meaning that the empty system must really
be fi lled exclusively with softened water before
starting the boiler for the fi rst time. Changing
the water after the boiler has already been in
operation is too late since the limescale from the
unsoftened water has already precipitated in the
boiler.
To reduce the amount of water replacement for
later repairs, it must be possible to shut off all large
volumes such as buffers, boiler and heating circuits
Operation PC 20 to 32 kW
2011-12
23
Buffer, hot water tank
Our heating circuit control system
normally works well without a buffer storage tank
When the boiler can control the heating circuits
itself, it runs for a minimum interval at times of
low heating demand to maintain delivery to the
heating circuits, so it uses the house as a buffer
during periods of slight room temperature variation
(approx. 0.5 °C). If room sensors are installed, the
boiler waits to begin a new firing cycle until the
room temperature actually falls below the target
temperature, thus reducing the number of on/off
cycles to a minimum that saves energy and reduces
wear on the boiler. The transition from firing to
standby is orderly. As long as there is gas-emitting
wood in the combustion chamber, combustion air
continues to be fed in and the resulting residual
heat is supplied to the heating circuits. The control
system calculates the situation in the combustion
chamber from the temperature and the residual
oxygen in the flue gas.
When is a buffer really necessary?
• When the heat from minimum boiler runtime
cannot be taken up by a hot water tank smaller
than 300 litres during summer hot water
preparation
• When regulation of the heating elements is done
externally (separately) from the boiler control
system (for example, individual room temperature
control) and the boiler thus has no access to the
heating circuits for its required minimum runtimes
• When the design output is less than 70% of the
boiler's rated capacity in wooden houses with low
thermal capacity
At low heating loads,
either install a buffer
or set short heating time slots
For very well-insulated brick walls (not for wooden
construction), the house itself is an excellent thermal
store. If the boiler output is too high, it can be
adjusted to the house's heating requirements by
limiting the heating time to three short time slots
spread over the day.
If there is very low heat consumption during the
transitional period in autumn/spring (e.g. heating
only in the bathroom), then a buffer storage tank is
needed for this low heating load.
For a wooden house with radiator heating, where
there is not even the screed of an underfloor heating
system to act as a thermal store, the installation of
a buffer should be considered. With a design output
less than 70% of the boiler's rated output, an
underfloor heating system operating only with time
slots will cause large temperature variations in the
rooms and a buffer storage tank is required. Heat
produced by the boiler and not currently needed in
the house can be stored in a buffer storage tank and
returned to the heating system when needed.
A sufficiently large hot water tank
To operate the pellets boiler in summer without a
buffer storage tank, a hot water tank with a capacity
of at least 300 litres is needed to take up the heat
from an entire firing cycle. For better convenience,
one should choose a 300-litre tank.
• For above-average hot water needs or high peak
demand (a pellet boiler needs up to 20 minutes
from standby to maximum output and this must
bridged with a buffer)
• For air heating systems or also individual heating
fans that are started without warm-up time for the
boiler.
• For integration of a solar heating system with a
low-temperature heating system
24
Subject to change due to technical improvements
www.eta.co.at
Overtemperature, safety temperature limiter
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 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: safety temperature limiter and thermal
emergency cooling valve. This emergency cooling is
shown on the monitor "Emergency cooling".
The heat dissipation is limited with the maximum
fl ow temperature set in the heating circuits and
the hot water setpoint temperature.
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
97 to 103°C) is reached, the power supply to the
draught fan and the fuel intake is interrupted.
If the boiler temperature decreases below 70 °C
again, the safety temperature limiter can be
manually released for a restart of the boiler.
STB
Operation PC 20 to 32 kW
2011-12
25
Adjusting the date and time
Getting to know the control system
Instead of buttons, the touchscreen is operated
using icons directly on the screen.
In order to familiarise yourself with how to operate
the system, tap once on the icon on the left of
the screen.
The touchscreen only displays those function blocks
that are required and confi gured to work with your
heating system.
You can use the horizontal buttons
, ... to fl ick between the
individual function blocks (FUBs).
These instructions contain descriptions of all the
Description of function blocks
function blocks of the ETAtouch software.
This document only describes the boiler, heating
circuit and store function blocks.
The other function blocks are described in the
accompanying document "ETAtouch function
blocks - operation".
, ,
Moving on the touchscreen
Adjusting the date and time
Tap on the date or time at the bottom right-hand
corner of the touchscreen.
A screen appears for adjusting the date and time:
Use the horizontal buttons to select the individual
function blocks (FUBs) of the heating system.
Overview of the selected
function block.
Text menu for adjusting the
parameters of the selected
function block
I/O list allowing experts to
assign inputs and outputs
Error messages
for the selected function
block
Toolbox
for experts
Tap on the [Day], [Month], [Year] or [Time] fi elds to
alter the settings.
Once a fi eld has been fi lled in by entering
numbers, the cursor automatically moves to the
next fi eld.
deletes the number to the left of the cursor.
closes the screen without saving the
changes.
saves changes and closes the screen.
26
The vertical buttons are used to open the different views for the
selected function block (FUB):
Subject to change due to technical improvements
INFO
Help
www.eta.co.at
Changing the language
Changing the language
It is possible to change the language on the screen.
Switching to the toolbox
Press the button to switch to the toolbox.
Tapping the button with the fl ag symbols
Tap the button with the fl ag symbols to go to the
language selection screen.
Selecting a language
Select the language you require and
confi rm by pressing the button.
Back to overview
Press to return to the boiler overview screen.
Operation PC 20 to 32 kW
2011-12
27
Renaming function blocks
Changing the names of the
function blocks
The names of the function blocks can be changed
at any time in order to make them clearer to you.
For example, the names of the heating circuits HC,
HC2 etc. can be changed to ground fl oor, upper
fl oor, parents, living room or similar.
Example: Renaming HC1 "Ground fl oor"
Even though this example uses a long name, it is
best to choose short names so that you can reach
all the function blocks without having to use the
arrow buttons.
Selecting heating circuit 1
Double-tap to rename this function block.
2x
Changing the name using the keyboard
cancel
Use the keyboard to enter the new name for
heating circuit 1, in this example: FLOOR.
Then press the
name.
The
and changes back to the previous name.
HC has now been renamed "FLOOR".
The names of all the function blocks can be
changed at any time.
button cancels the renaming process
button to save the new
save
28
A small screen appears for this function block.
Tap the [Change Name] button. An on-screen
keyboard appears.
Subject to change due to technical improvements
www.eta.co.at
Error, Alarm, Warning, Message
Message
This icon in the function block buttons indicates a
message. Messages do not interrupt operation of the
boiler, nor must they be confi rmed.
For example, they may indicate that the ash box
needs emptying or inform the user of events outside
normal operation, e.g. in summer, the pump antiblocking protection begins every Saturday at 12 pm.
Warning
This icon indicates a warning. Warnings are issued
when a function that is not essential to active
operation fails. A warning can be confi rmed before
the error is resolved. However, it will continue to be
shown until the cause of the error has actually been
dealt with.
Error, Alarm
This icon indicates an alarm. Alarms are issued for
errors that halt operation. Some alarms can be
confi rmed before the error is resolved. However, they
will continue to be shown until the cause of the error
has actually been dealt with.
Some alarms cannot be confi rmed until the error has
been successfully resolved. The display windows for
such alarms can be removed using the [Confi rm later]
button.
Displaying an error
Press the button to go to the list of errors for
the current function block.
If an alarm or warning occurs in any function
block, this button changes the icon to (Alarm)
or (Warning).
By selecting a line, you can view a help text at
the bottom of the screen.
Confi rming an error
Select the line and double-tap or press the
button. A confi rmation window appears.
Press "OK" to c o n fi r m the message and delete it
from the list. Press [Cancel] to close the window
without confi rming the error.
!!! Restart after an alarm !!!
Once the error has been resolved and the alarm has
been confi rmed, the boiler or the affected heating
circuit must be switched back on using the on/off
button .
Once they are switched on, the button lights up
green.
Operation PC 20 to 32 kW
or
2x
Confi rming all errors
Double-tap on a function block to bring up a
menu where you can confi rm all errors by tapping
[Confi rm errors].
2x
2011-12
29
Opening the text menu
Function block text menus
There is a "text menu" for each function block. This
view shows the current parameter settings. It also
allows the user to make changes.
Opening the text menu
Select the desired function block, e.g. by tapping
. Next, change the view to "text menu" by
pressing the button.
The text menu for the selected function block
appears. The individual parameters for the selected
function block are displayed.
Lines preceded by have a submenu, which can
be opened by tapping the line. The submenu can
be closed again by tapping the upper-level line
that is marked with .
Modifying parameters
It is possible to modify certain parameters in order
to adapt the heating to your needs. Tap these
parameters to select them. The fi eld
changes and the button appears.
Change the parameters by double-tapping
on the line, or select the line and press the
button.
Example: Displaying the boiler counters
Tap the button to open the "Boiler" function
block.
From the overview screen, press the button to
go to the text menu.
The boiler text menu appears.
Tap the [Counters] line. The submenu opens and
the boiler counters are displayed.
In case of doubt, consult an expert before
making any changes.
Only modify parameters if you know what their
function is. Read through the corresponding
section of the user manual before making changes.
If the explanation of the relevant function given
in the manual is not suffi cient for your purposes,
confer with an expert.
30
Subject to change due to technical improvements
or
2x
Press the button to return to the overview.
www.eta.co.at
Boiler Overview, buttons, functions
"Boiler" overview
Press and to open the "Boiler" overview
screen.
The overview screen shows you at a glance what
operating state the boiler and your heating system
are in.
You can switch the unit on and off, de-ash and
defi ne the fi ll-up time from this overview screen.
Fill-up time
This button can be used to set the latest time at
which the boiler's storage tank is completely fi lled
up. This prevents refi lling during the night. This
time applies for every day of the week.
Boiler pressure 2.10 bar
The current water pressure in the heating system is
displayed. The pressure is measured in the boiler.
Outdoor -7°C
The current outside temperature is measured by
the outside temperature sensor.
Current outside temperature
Current boiler pressure
Current pellet stock
in the boiler storage tank.
Maximum pellet stock for
PC20-32: 60 kg
Pu7-15: 30kg / PC20-32: 60kg
On/off button
This button is used to switch the boiler
on and off.
Green = On
Red = Off
Deash button
This button is used to begin deashing of the boiler.
Emission measurement
Current boiler temperature
Heating coil for heating
circuit or buffer
This is displayed when the boiler is supplying
directly to the heating circuit or the buffer.
The temperature displayed is the fl ow temperature
for the consumer in question.
Heating coil for 2nd internal
heating circuit (PU7-15 only)
Is only displayed if the 2nd internal
heating circuit is installed and confi gured.
The second heating coil appears with the fl ow
temperature when the boiler is supplying heat to
the 2nd heating circuit.
This button switches the boiler to full load
mode for a period of 30 minutes. The boiler
will then begin to run at full load. The heat will
be channelled into the hot water tank and the
heating circuits. After 30 minutes, the boiler
automatically returns to the original mode.
Operation PC 20 to 32 kW
Hot water tank (PU7-15 only)
The hot water tank is displayed on the right of the
boiler when the boiler is supplying heat to the hot
water tank.
2011-12
31
Operating modes Boiler
Heating
Current operating mode
This line shows the current operating mode of the
boiler. Below is a list of the possible modes:
Switched off
The boiler is switched off.
The on/off button is lit up red.
Warm Start
The boiler attempts to ignite the pellets without
the electrical ignition using only the remaining
embers and the heat stored in the combustion
chamber.
Igniting
The pellets are ignited using the electrical ignition.
Heating
The boiler is in heating mode and is channelling
heat to the consumers.
Ember burnout
Failure during ash-removal
The ash screw has been switched off due to
excessive current consumption. This may be due
to the ash box being full or the ash screw being
blocked by foreign objects.
Empty the full ash box, then start a new deashing
sequence by pressing
was not full or the malfunction recurs, the foreign
object blocking the ash screw must be found and
removed.
or . If the ash box
Ember burnout - Error
Due to a malfunction, the current fi ring phase has
ended with a burnout.
Ember burnout - External Stop
Due to an external lock-out (Stop command), the
current fi ring phase has ended with a burnout.
Locked
Heating not possible, as the boiler has been locked
externally (Stop command).
At the end of a fi ring phase, the pellets that are still
on the grate are burnt off.
Ready
After burnout, the boiler is switched on and
standing by for a heating demand.
Ash box missing
The ash box is not connected. The position switch
for the ash box is not pressed.
Ash removal
The grate tips up for self-cleaning, and the
turbulators move to clean the heat exchanger. The
ash screws transport the ash from the boiler to the
ash box.
Failure
A malfunction has occurred, preventing the boiler
from heating. The cause can be found in the list of
error messages.
Calibrating lambda probe
The lambda probe is calibrated automatically. It
is not possible for the unit to heat whilst in this
mode.
Ash removal stop aspirator
The suction process used to fi ll the boiler storage
tank is interrupted in order to de-ash the boiler.
Standby fi ll up
Pellets are sucked into the storage tank so that the
boiler can attempt to ignite. It is not possible for
the unit to heat whilst in this mode.
S t o p fi l l - u p
The suction process used to fi ll the boiler storage
tank is interrupted in order to ignite pellets and
start up the boiler.
32
Subject to change due to technical improvements
www.eta.co.at
Boiler Changing the fill-up time
Defi ning the fi ll-up time
It is possible to adjust the latest time for fi lling
up the storage tank before night time, in order to
prevent disturbances. This time applies for every
day of the week.
The factory setting for this time is 19:00. This
prevents refi lling during the night.
Changing the fi ll-up time
Tap the button. A screen appears for setting
the time.
"Fill up pellets" function
The "Fill up pellets" function can be used to fi ll up
the boiler's storage tank regardless of the current
fi lling level.
This function is available in the boiler text menu.
Filling up the storage tank separately
Press the buttons and to go to the boiler
text menu.
Tap the [Boiler] line and, in the submenu, tap the
[Hopper] line.
Double-tap on the [Extra fi ll-up] line.
Enter the new fi ll-up time.
Press the button to save the new time.
The fi ll-up time has now been changed. The new
time applies for every day of the week.
2x
A selection window appears.
Select [Yes] and press . The fi ll-up process
begins and the storage tank is fi lled up.
Operation PC 20 to 32 kW
Press
to return to the boiler overview.
2011-12
33
Adjusting the ash removal idletime Boiler
Adjusting the ash removal idletime
The "Start idletime" parameter is used to select the
time from which the boiler ceases to de-ash. The
time for which ash removal is locked can be altered
using the "Duration idletime" parameter. The "Start
idletime" time applies for every day of the week.
The factory setting for this is 21:00.
Press the buttons
menu.
Tap the [Boiler] line and, in the submenu, tap the
[Ash removal] line.
Double-tap the [Start idletime] line.
and to go to the text
2x
Adjusting the duration of the idletime
The duration of the idletime for ash removal can be
altered using the "Duration idletime" parameter.
This duration applies for every day of the week.
The factory setting is 10 hours.
Press the buttons
menu.
Tap the [Boiler] line and, in the submenu, tap the
[Ash removal] line.
Double-tap on the [Duration idletime] line.
and to go to the text
2x
A settings screen opens:
Enter the new time and press to save
changes.
Press the
button to return to the overview.
A settings screen opens:
The duration of the idletime can now be changed.
Press to confi rm.
Press the
button to return to the overview.
34
Subject to change due to technical improvements
www.eta.co.at
Boiler Changing the deashing interval
Deashing interval
Once a defi ned amount of pellets has been
consumed, the control system automatically
de-ashes the boiler. The ash is transported from
the combustion chamber to the ash box.
The parameters "Earliest ash removal after kg" and
"Latest ash removal after kg" defi ne the boiler's
deashing interval. Ash removal is performed at a
point between these two limits.
The deashing interval should only be altered
after consultation with an expert or ETA Customer
Service.
Deashing interval factory settings
The parameters are set at the factory to:
Earliest ash removal after: 30 kg
Earliest ash removal after: 50 kg
At earliest after: 15 kg 18 kg 30 kg
At latest after: 25 kg 30 kg 50 kg
PU 7-11 PU 15 PC 20-32
A settings screen opens:
Enter the new value and press to
confi rm.
Use the same method to alter the parameter [Latest
ash removal after kg].
Changing the "Earliest ash removal after kg"
setting
Press the buttons and to go to the text
menu.
Tap the [Boiler] line and, in the submenu, tap the
[Ash removal] line. Double-tap on the [Earliest ash
removal after kg] line.
2x
Press the
button to return to the overview.
Operation PC 20 to 32 kW
2011-12
35
Overview, buttons, functions Heating circuit
"Heating circuit" overview
Press and to open the "Heating circuit 1"
overview screen.
Each heating circuit has its own function block
(HC2, HC3...).
In the overview of the selected heating circuit,
the on/off button
heating circuit on and off.
The timer can be used to set 3 different time slots
for each day of the week. If there is a room sensor
installed, you can also adjust the desired room
temperature.
If not, a slider on the overview screen allows you
to adjust the room temperature.
can be used to switch the
"Day" and "Night" mode
During the time slots, the heating circuit is in
"Day" mode.
Outside the time slots, the heating circuit is in
"Night" mode.
Slider
The slider is only shown if there is no room
temperature sensor installed. The slider can be
used to change the room temperature by approx.
+/- 5°C.
Please bear in mind that this substitute function
cannot replace the precision of a room sensor.
Timer
The timer shows the set heating time slots for
the current day of the week. Tapping this timer
brings up a screen where it is possible to set 3 time
slots for each day of the week.
If a room sensor is installed, the desired room
temperature can be set for each time slot.
Likewise, the reduced room temperature (set-back
temperature) between the heating time slots can
also be adjusted.
Heating circuit on/off
This button is used to switch the heating circuit on
and off.
The boiler has a separate on/off button.
Green = Heating circuit on
Red = Heating circuit off
Within a set time slot, the heating circuit will be in
"Day" mode. Outside of the time slots, it will be in
"Night" mode.
If the heating circuit is operated in "Auto"
mode (
the icon depending on whether the heating
circuit is running at "Day" or "Night"
temperature.
button), this button changes
Current room temperature
(room sensor only)
Only displayed if a room sensor is installed
for this heating circuit. This displays the current
room temperature as measured by the room
sensor.
Current fl ow temperature
The current target fl ow temperature for the heating
circuit is only displayed if the heating circuit is
switched on and in operation.
36
Subject to change due to technical improvements
www.eta.co.at
Heating circuit Overview, buttons, functions
einer Heiz-Pause heizt bis zu Ende
0 3 6 9 12 15 18 21 24
0 3 6 9 12 15 18 21 24
Das Drücken von „Kommen“ in
einer Heiz-Pause heizt bis zu Ende
des folgenden Heiz-Zeitfensters.
Das Drücken von „Kommen“ während
eines Heiz-Zeitfensters überspringt die
folgende Absenkphase (heizt durch).
Outdoor -13°C
Current outside temperature
The current outside temperature is measured by
the built-in outside temperature sensor.
Constant "Day" mode
This button can be used to switch the heating
circuit to constant "Day" mode (button lights
up ).
If a room sensor is installed, the temperature will
be regulated to the highest room temperature
set for that day in the timer. If there is no room
sensor, the heating circuit runs using the heating
curve "Day".
"Auto" and "Night" modes can be ended by
pressing the
button.
Come
This function is only available in "Auto" mode.
Regardless of the current time slot, pressing the
button (when you come home) switches the
heating circuit to "Day" mode (button lights up
) until the next set time slot.
If the unit has a built-in room sensor, the heating
circuit is regulated to the set room temperature. If
there is no room sensor, the heating circuit runs
using the heating curve "Day".
When “Come” is pressed during a heating
Das Drücken von „Kommen“ in
break, heating continues until the end of
the following heating time slot.
des folgenden Heiz-Zeitfensters.
0 3 6 9 12 15 18 21 24
When “Come” is pressed during a heating time
Das Drücken von „Kommen“ während
slot, heating continues on through the following
eines Heiz-Zeitfensters überspringt die
reduced heating phase.
folgende Absenkphase (heizt durch).
Constant "Night" mode
This switches the heating circuit to constant
"Night" mode so that it runs at the set-back
temperature (button lights up ).
If there is a built-in room sensor, the temperature
is regulated to the set-back temperature that is
set in the timer. If the unit does not have a room
sensor, the heating circuit runs using the heating
curve "Night".
"Auto" and "Day" modes can be ended by pressing
the
button.
"Auto" mode
"Auto" mode automatically switches between
"Day" and "Night" mode.
Within a set time slot, the heating circuit will be in
"Day" mode. Outside of the time slots, it will be in
"Night" mode.
The "Auto" display changes the icon depending
on whether the heating circuit is currently in "Day"
or "Night" mode.
"Day" mode
"Night" mode
0 3 6 9 12 15 18 21 24
Go
This function is only available in "Auto" mode.
Regardless of the current time slot, pressing the
button (when you go out) switches the heating
circuit to "Night" mode (button lights up ) until
the next set time slot.
If the unit has a built-in room sensor, the
heating circuit is regulated to the stored set-back
temperature. If there is no room sensor, the
heating circuit runs using the heating curve
"Night".
When “Go” is pressed during a heating time slot,
Das Drücken von „Gehen“ während
heating is reduced until the start of the next
eines Heiz-Zeitfenster senkt ab bis
time slot.
zum Beginn des nächsten Zeitfensters.
0 3 6 9 12 15 18 21 24
0 3 6 9 12 15 18 21 24
When “Go” is pressed during a
Das Drücken von „Gehen“ in
heating break, the next heating time
einer Heiz-Pause überspringt
slot is bypassed.
das nächste Heiz-Zeitfenster.
Operation PC 20 to 32 kW
2011-12
37
Operating modes Heating circuit
On Night
Holiday mode
The "Holiday" button is used to set a period for
which the selected heating circuit will run in
"Night" mode.
Any adjustments made to the room temperature
also infl uence the "Day" temperature, and thus
the temperature for heating up at the end of the
holiday. As such, it is best not to adjust the room
sensor for holiday set-back.
If you wish to reduce the room temperature, you
can set an individual "set-back temperature" in the
timer. During "Holiday" mode, the lowest of all
the "set-back temperatures" in the timer is the
one that applies.
The heating circuit is outside of the timer's time
slots and in "Night" mode.
The fl ow temperature of the heating circuit is
regulated using the "Heating curve night".
If the unit has a built-in room sensor, the
temperature is regulated to the stored "set-back
temperature". The switch can be in either the
"Auto" or the "Night" position.
Holiday On
The heating circuit is switched on and in holiday
mode (= constant "Night" mode). It remains in this
state until the "End of holiday" date.
On Delay
The heating circuit is no longer demanding any
heat and is in delay mode. The boiler pump is still
running for a short time in order to channel the
heat out of the boiler.
On Day
This line shows the current operating mode of
the heating circuit. Below is a list of the possible
modes:
Current operating mode
On Day
The heating circuit is within one of the timer's
time slots and in "Day" mode.
The fl ow temperature of the heating circuit is
regulated using the "Heating curve day".
If the unit has a built-in room sensor, the
temperature is regulated to the highest room
temperature set for the time slot. The switch can be
in either the "Auto" or the "Day" position.
On Freezing room
The heating circuit is in operation because the
current room temperature is below the freezing
protection temperature (10°C).
On Freezing fl ow
The heating circuit is in operation because the
current fl ow temperature is below the freezing
protection temperature (10°C).
On Heat dissipation
The heating circuit is in operation in order to cool
the boiler by dissipating excess heat. Also displayed
during emission measurement.
On Overtemperature
The heating circuit is in operation because
the boiler is running at overtemperature. The
heating circuit is running at the highest set fl ow
temperature in order to dissipate the heat from the
boiler (overheating protection).
38
Subject to change due to technical improvements
www.eta.co.at
Heating circuit Operating modes
On Screed
The heating circuit is in operation; the screed
drying program is being run.
Off Enable temp.
The heating circuit is still switched off because the
boiler is not yet able to supply suffi cient heat. The
enable temperature for the heating circuit has not
yet been exceeded.
Off Target day
The heating circuit is switched off. The target fl ow
temperature calculated from the heating curve
"Day" is below the room temperature as measured
by the room sensor.
If the unit does not have a room sensor, the
calculated target fl ow temperature is below 18°C.
Off Hot water
The heating circuit is switched off because the hot
water is currently being heated.
Off Room night
The heating circuit is switched off and outside the
set time slots. The current room temperature is
higher than the stored set-back temperature by at
least the "RoomOffDiff" temperature.
Off Room holiday
The heating circuit is within the set holiday
time, and thus switched off. The current room
temperature is higher than the stored set-back
temperature by at least the "RoomOffDiff"
temperature.
Off Target night
The heating circuit is switched off. The target
fl ow temperature calculated from the heating
curve "Night" is below the room temperature as
measured by the room sensor.
If the unit does not have a room sensor, the
calculated target fl ow temperature is below 18°C.
Off Target holiday
The heating circuit is within the set holiday time,
and thus switched off.
The target fl ow temperature calculated from
the heating curve "Night" is below the room
temperature as measured by the room sensor.
If the unit does not have a room sensor, the
calculated target fl ow temperature is below 18°C.
Off Room day
The heating circuit is within a time slot, but
switched off. The current room temperature is
higher than the set "Room target" temperature by
at least the "RoomOffDiff" temperature.
Off Outside day
The heating circuit is switched off. The current
outside temperature is higher than the set
temperature for "Day Heating threshold".
Off Outside night
The heating circuit is switched off. The current
outside temperature is higher than the set
temperature for "Night Heating threshold".
Off Outside holiday
The heating circuit is within the set holiday
time, and thus switched off. The current outside
temperature is higher than the stored set-back
temperature.
Off Summer
The heating circuit is switched off. The only active
functions are the freezing protection and the boiler
pump's "anti-blocking protection", which runs at
midday every Saturday.
Off Sensor failure
Operation PC 20 to 32 kW
The heating circuit is switched off due to a defect
in the fl ow temperature sensor.
2011-12
39
Heating time slots Heating circuit
Setting the heating time slots
The heating circuit timer can be used to set 3
different time slots for the heating for each day of
the week.
If the unit has a room sensor, a target room
temperature can also be set for each time slot.
Likewise, the reduced room temperature (set-back
temperature) between the heating time slots can
also be adjusted for each day of the week.
"Day" mode
During a set time slot, the heating circuit is in
"Day" mode.
If a room sensor is installed, this regulates the
heating circuit to the set target room temperature
for the time slot.
If there is no room sensor, the fl ow temperature
of the heating circuit is calculated using the
heating curve.
"Night" mode
Outside the time slots, the heating circuit is in
"Night" mode.
If a room sensor is installed, this regulates
the heating circuit to the stored "set-back
temperature" for the time slot.
If there is no room sensor, the fl ow temperature of
the heating circuit is calculated using the heating
curve.
Overview of current time slots
The current day of the week is selected
automatically. The set time slots for the current day
of the week are shown on the screen.
Room temperature only
Days of the week
3 adjustable time slots
for each day of the week
Set-back temperature
between time slots
Target room temperature
room sensor only
Selecting a time slot
Tap the [Time slot 1] line. The time slot setting
screen opens.
The times for "Day" mode can now be altered.
If the unit has a built-in room sensor,
the target room temperature can also be set.
Adjusting the timer (with room sensor)
In the overview for the selected heating circuit, tap
the timer. The screen for setting the timer opens.
40
Subject to change due to technical improvements
Room
sensor only
Press to save the new settings. Use the
same method to adjust the other time slots.
www.eta.co.at
Heating circuit Heating time slots
Copying time slots to other days of the week
Once the time slots have been adjusted, they can
also be adopted for other days of the week.
In the time slot overview screen, tap the
button. A screen appears for selecting a
day of the week:
Tap to select the desired day of the week or [All]
and then press . The time slots are
adopted for the selected days.
"Holiday" function
With this function, the button can be used to
switch the heating circuit to constant "Night"
mode for an adjustable time period. This setting
only ever applies for the selected heating circuit.
The hot water supply from the hot water tank
or the fresh water module is not affected by the
"Holiday" function.
For "Holiday" mode, the heating circuit is regulated
to the lowest set-back temperature set in the timer.
If you wish to reduce the temperature for the
"Holiday" time period, you can set an individual
set-back temperature in the timer.
Adjusting the room sensor also affects the "Day"
temperature when heating up at the end of the
holiday. As such, it is best not to adjust the room
sensor for holiday set-back.
Setting a "Holiday" time period
In the "Heating circuit" overview screen, tap the
button. A screen opens:
The new time slots are displayed.
Finally, press .
The heating circuit overview reappears.
Enter the time for the beginning of your holiday.
The button can be used to switch between the
"Start" and "End" of the holiday.
Enter both times and press
The heating circuit overview reappears.
.
Operation PC 20 to 32 kW
2011-12
41
Heating curve Heating circuit
Heating flow temperature (°C)
80
Outside temperature (°C)
The heating curve
The heating curve controls the fl ow temperature
for the "Day" and "Night" modes of the heating
circuit in question. During a set time slot, the
heating circuit is in "Day" mode. Outside the time
slots, the heating circuit is in "Night" mode.
Each heating circuit has its own heating curve,
as underfl oor heating requires different settings to
radiator heating.
The diagram shows a heating curve for radiator
heating. If the control settings have been adapted
to your system, lower heating curves may be
set for underfl oor heating and higher heating
curves for radiator heating.
Maximum flow temperature
70
60
50
(adjustable with SERVICE permission)
Day
Heating curve "Day"
During a set time slot, the heating circuit is in "Day"
mode. The heating curve for "Day" mode can be
adjusted using the parameters "Flow at -10°C" and
"Flow at +10°C". The control system uses these
parameters to plot a line: the heating curve "Day".
The heating curve "Day" and the current outside
temperature are used to calculate the required fl ow
temperature for the heating circuit. Example:
at +3°C outside temperature => 44°C fl ow
at -5°C outside temperature => 54°C fl ow
If the unit has a room sensor, the calculated
fl ow temperature is corrected. The actual fl ow
temperature may be higher or lower.
Heating curve "Night"
Outside the set time slots, the heating circuit is in
"Night" mode.
44°C Day
40
30
29°C Night
20
10
0
-20 -10-15
Winter set-point
Freezing protection
Night
+3°C
+10+50-5 +20+15
Maximum fl ow temperature
This limit protects your heating system.
Underfl oor heating is usually limited to 45°C, while
radiators with metal pipes can take temperatures
up to 85°C.
Night heating limit
Transition period
set-point
Day heating limit
The heating curve "Night" is set back from the
heating curve "Day" by the adjustable value "Setback". The heating curve "Night" and the current
outside temperature are used to calculate the
required fl ow temperature.
Factory settings for the heating circuit
With software versions 1.20.0 and higher,
the system confi guration for the heating circuit
offers the user a choice between underfl oor and
radiator heating.
This choice pre-sets some of the parameters in
the heating circuit. For information on these
parameters and their factory settings, see
page 44.
page 82.
42
Subject to change due to technical improvements
www.eta.co.at
Heating circuit „Day and Night Heating threshold“
The parameter "Day Heating threshold"
With the "Day Heating threshold" parameter, an
outside temperature is set which, when exceeded,
will result in the heating circuit being switched to
"Day" mode.
The factory setting for this parameter is 18°C.
The "Day Heating threshold" can be set
differently for each heating circuit.
Changing the parameter "Day Heating threshold"
Press to open the text menu for the selected
heating circuit.
Tap the [Heating circuit] line to open the submenu.
Double-tap on the [Day Heating threshold] line
(or select the line and press the
button).
The parameter "Night Heating threshold"
If the heating circuit is in "Night" mode, an outside
temperature is set which, when exceeded, will
result in the heating circuit being switched off.
The factory setting for this value is 2°C. This applies
as the freezing protection limit for this heating
circuit. The "Night Heating threshold" can be set
differently for each heating circuit.
Changing the parameter "Night Heating
threshold"
Press to open the text menu for the selected
heating circuit.
Tap the [Heating circuit] line to open the submenu.
Double-tap on the [Night Heating threshold] line
(or select the line and press the
button).
2x
A settings screen opens:
Enter the new heating threshold for "Day" mode.
Press to save the new value.
Press
to open the "Heating circuit" overview.
2x
A settings screen opens:
Enter the new heating threshold for "Night" mode.
Press to save the new value.
Press
to open the "Heating circuit" overview.
Operation PC 20 to 32 kW
2011-12
43
Adjusting the heating curve Heating circuit
Heating flow temperature (°C)
80
Outside temperature (°C)
Heating flow temperature (°C)
80
Adjusting the heating curve
If the heating circuit is always too warm or too
cold, the fl ow temperature must be adjusted. This
can be done using two parameters:
"Flow at -10°C" and "Flow at +10°C".
No large jumps in temperature
Do not set any large jumps in temperature when
adjusting "Flow at +10°C" and "Flow at -10°C":
For underfl oor heating, never more than 2°C
For radiators never more than 4°C
You may need to alter the fl ow temperatures
again after one or two days, but working in small
steps will help you to set the heating circuits more
precisely, thus saving energy.
During the transition period -> "Flow at +10°C"
Factory settings for the
heating circuit
With software versions 1.20.0 and higher,
the system confi guration for the heating circuit
offers the user a choice between underfl oor and
radiator heating.
This choice pre-sets some of the parameters in the
heating circuit. These parameters and their factory
settings can be seen in the table below:
Preset Underfl oor Radiator
M a x fl o w 45°C 65°C
Flow at -10°C 33°C 55°C
Flow at +10°C 25°C 35°C
Set-back 3°C 15°C
Enable temperature 25°C 40°C
Room effect 1°C 4°C
In winter -> "Flow at -10°C"
If the heating circuit is always too warm or too cold
during the transition period (spring and autumn),
only the fl ow temperature for "Flow at +10°C" is
reduced or increased.
70
60
Day
50
set-point
40
30
20
10
0
-20 -10-15
Night
Transition period
+10+50-5 +20+15
Do not change the fl ow temperature "Flow at
-10°C" during the transition period.
If the heating circuit is always too cold or too warm
in winter, only the fl ow temperature
"Flow at -10°" is increased or reduced.
70
60
50
40
30
20
10
0
-20 -10-15
Winter set-point
Outside temperature (°C)
Day
Night
+10+50-5 +20+15
Do not change the fl ow temperature "Flow at
+10°C" in winter.
44
Subject to change due to technical improvements
www.eta.co.at
Heating circuit Adjusting the heating curve
Adjusting the heating curve for outside
temperatures above 0°C -> Changing
"Flow at +10°C"
If the heating circuit is always too cold or too warm
in the transition period, the fl ow temperature
"Flow at +10°C" is increased or reduced.
No large jumps in temperature
For underfl oor heating, never more than 2°C
For radiators, never more than 4°C
Press
heating circuit.
Tap the [Heating circuit] line and, in the submenu,
tap the [Heating curve] line.
Double-tap on the [Flow at +10°C] line (or select
the line and press the
to open the text menu for the selected
button).
Adjusting the heating curve for outside
temperatures below 0°C -> Changing
"Flow at -10°C"
If the heating circuit is always too cold or too warm
in winter, the fl ow temperature "Flow at -10°C"
is increased or reduced.
No large jumps in temperature
For underfl oor heating, never more than 2°C
For radiators, never more than 4°C
Press
heating circuit.
Tap the [Heating circuit] line and, in the submenu,
tap the [Heating curve] line.
Double-tap on the [Flow at -10°C] line.
to open the text menu for the selected
2x
A settings screen opens:
Enter the new fl ow temperature for this heating
circuit. Press
The text menu for the selected heating circuit is
displayed. Press
overview.
to save the new value.
to open the "Heating circuit"
2x
A settings screen opens:
Enter the new fl ow temperature for this heating
circuit. Press to save the new value.
The text menu for the selected heating circuit is
displayed. Press
overview.
to open the "Heating circuit"
Operation PC 20 to 32 kW
2011-12
45
Setting the „enable temperature“ Heating circuit
Setting the parameter "enable temperature"
The heating circuit pump does not start until the
energy source (buffer or boiler) has exceeded the
"enable temperature". You can give a heating
circuit priority by setting the "enable temperature"
lower than that for all the other heating circuits in
the system.
Opening the heating circuit text menu
Press to open the text menu for the selected
heating circuit.
Tap the line [Heating circuit] and, in the submenu,
double-tap the line [Enable temperature].
2x
A settings screen opens:
Enter the new enable temperature for this heating
circuit. Press
to save the new value.
46
The text menu for the selected heating circuit is
displayed. Press
overview.
Subject to change due to technical improvements
to return to the heating circuit
www.eta.co.at
Heating circuit Adjusting the „Set-back“
The parameter "Set-back"
If the unit does not have a room sensor, the
parameter "Set-back" is used to adjust the night
mode. The control system subtracts the "Set-back"
parameter from the heating curve "Day" to get the
heating curve "Night".
Outside the time slots set in the timer, the heating
circuit is in "Night" mode, and runs using the
heating curve "Night".
The factory setting for this "Set-back" is 15°C.
The "Set-back" can be adjusted for each
heating circuit. The following steps are the same
for all heating circuits.
Do not use large set-backs
Changing the parameter "Set-back"
Press to open the text menu for the selected
heating circuit.
Tap the [Heating circuit] line and, in the submenu,
tap the [Heating curve] line.
Double-tap on the [Set-back] line.
2x
A settings screen opens:
Do not overuse "set-back", as much higher air
temperatures will be required to ensure comfort
in the morning if the walls have cooled down too
much overnight. In addition to reducing comfort,
this also wastes the energy saved overnight.
Depending on the "Flow at -10°C" temperature
and the type of heating circuit used (radiator or
underfl oor heating), the following guidelines apply
for the set-back:
Temperature
Flow at -10°C
Set-back
40°C 60°C 80°C 30-40°C
5-8°C 1 0 -1 5° C 15 -22 °C 3-5°C
Radiator Underfl oor
Enter the new temperature difference for the "Setback". Subtracting the "Set-back" from the heating
curve "Day" gives you the heating curve "Night".
Press
menu for the selected heating circuit is displayed
once more.
Press
to save the new value. The text
to return to the heating circuit overview.
Operation PC 20 to 32 kW
2011-12
47
Room sensor with remote control Heating circuit
Night-Clock-Day
The switch (1) can be used to set the following operating
3
1
2
modes:
= NIGHT or set-back mode
= AUTOmatic switching between DAY and NIGHT
= DAY or heating mode, even when the outside temperature
exceeds the set heating threshold.
Switching off the heating
During the transition period, the heating circuit can be
switched off by turning the switch (1) to the
Correspondingly, turning the switch to the or position
switches on the heating circuit.
Changing the room temperature
The control knob (2) is used to increase or reduce the desired
room temperature by up to 5°C.
position.
The actual room temperature is only displayed in the "Heating
4
circuit" function block if the control knob (2) is in the middle
position. A desired increase in temperature will be deducted
from the room temperature measured by the room sensor,
while a reduction will be added to it.
"Malfunction" indicator light
LED (3) fl ashes red = WARNING or ALARM present.
Adjusting the room sensor
Open the cover by pressing in the latch (4), and turn the control
knob (2) to the middle position.
6
5
7
The measured room temperature can be adjusted using
potentiometer P1 (5). The room temperature is displayed in the
overview of the "Heating circuit" function block.
Switching off the room sensor function
If the room sensor is in a room that is heavily affected by
extraneous infl uence, e.g. the kitchen or a living room with a
tiled stove, the room sensor must be switched off (see below).
If the room sensor is switched off, the control knob (2) affects
the fl ow temperature directly. If the temperature is set back by
3°C or more (factory setting) using the control knob, the heating
circuit pump is switched off.
Colder
Within this range, the
heating pump will be
switched off if the room
temperature sensor
is switched off
48
Subject to change due to technical improvements
Warmer
2
Switching off the room sensor function:
Open the cover and move the jumper (6) from the right-hand
"S" position (sensor) to the left-hand "F" position (fi xed).
The target temperature and the set-back temperature in the
"heating circuit" function block must be set to 21°C. The fi xed
temperature in the room sensor must be also be adjusted to
21°C, using potentiometer P3 (7).
www.eta.co.at
Pellet store Overview, buttons, functions
"Pellet store" overview
Press and to open the "Store"
overview screen.
This function block is used to control pellet feeding
by discharge screw or a single suction head.
After a delivery of pellets the new stock quantity
can be entered as a value for calculating the stock
level. However, the actual stock in the store is not
measured.
Instead, the consumption calculated using the
discharge parameters is simply subtracted from the
stock quantity. As such, the actual stock level
may differ from this calculation by +/- 15%.
Enter stock
This button can be used to enter the new stock
quantity after a delivery of pellets.
3758 kg in pellet store
The calculated stock of the pellet store is displayed
here. It is not measured. It is simply calculated
using the discharge parameters, and may differ
from the actual stock by +/- 15%.
Off
Current operating mode
This line shows the current operating mode of
the pellet conveying system. Below is a list of the
possible modes:
Stock
Operating state
Current stock, may differ from
actual stock by +/- 15%
Off
The conveying system is not in operation. There is
no demand from the boiler.
Start
The boiler is demanding pellets and the aspirator is
starting up.
Aspirator warm up
The boiler aspirator is in operation. After the
"Aspirator warm up" period, the discharge screw in
the pellet store starts up.
Enter stock quantity
Fill up
The boiler aspirator and the pellet store discharge
screw are in operation. Pellets are being conveyed
to the boiler.
Operation PC 20 to 32 kW
2011-12
49
Entering stock Pellet store
Aspirator delay
The discharge screw is switched off and the boiler
aspirator keeps running for the "Aspirator shut-off"
period in order to rinse the hoses.
Aspirator delay M
The maximum fi ll up time has been exceeded; the
aspirator will keep running for a short while.
Aspirator delay F
There is a problem with the discharge screw; the
aspirator will keep running for a short while.
Error fi ll up time
It was not possible to convey pellets to the boiler.
The pellet store may be empty, or the hoses may be
blocked.
At the end of the adjustable "Fill up time max",
pellet feeding is shut off.
Entering new stock level
after a delivery of pellets
After the store has been fi lled with pellets, the
new stock quantity should be entered.
This way, the control system is always able to
calculate the approximate pellet stock level.
In the overview screen, tap the
A screen opens:
button.
Error Conveyor
There is a problem with the discharge screw. This
has been detected due to overcurrent, warming or
insuffi cient current consumption.
Enter the new stock quantity and press
to save.
The display returns to the overview.
50
Subject to change due to technical improvements
www.eta.co.at
Store with switching unit Overview, buttons, functions
"Pellet store" overview
Press and to open the "Store with
switching unit" overview screen.
In this function block, a pellet conveying system
is controlled using a switching unit and 2 or
3 suction heads.
The individual suction heads can be manually
selected, locked and enabled.
The conveying and rinse modes are indicated by
a green line between the suction head and the
switching unit.
If it is not possible to convey pellets from a suction
head, the switching unit automatically switches to
rinse mode. The conveying hose will now channel
in back air in order to dislodge any blockages in the
conveying hose or suction head.
After a delivery of pellets, the new stock quantity
can be entered as a value for calculating the stock
level. However, the actual stock level in the store is
not measured.
Instead, the consumption calculated using the
discharge parameters is simply subtracted from the
stock quantity. As such, the actual stock level
may differ from this calculation by +/- 15%.
Enter stock
This button can be used to enter the new stock
quantity after a delivery of pellets.
3758 kg in pellet store
The calculated pellet stock level is displayed. It
is not measured. It is simply calculated using the
discharge parameters, and may differ from the
actual stock by +/- 15%.
Stock
Suction head enabled
This suction head is enabled. Pellets are being
conveyed from the suction head to the switching
unit.
Tap this suction head to lock it (= icon).
Suction head locked
Green line between switching unit and suction head =
pellets are being conveyed from this suction head
Operating state
Entering stock quantity
Current stock, may differ
from actual stock by
+/- 15%
Switching unit
Manually switching
between suction heads
This suction head is locked. It is not possible
to convey pellets using this suction head.
Tap this suction head to enable it again
(= icon).
Manually switch to next suction head
Pressing this button manually switches the
switching unit to the next free suction head.
Switching unit switches automatically
Once the maximum fi ll up level (= parameter
"Switching at") has been reached, the switching
unit automatically switches to the next enabled
suction head.
Suction head 1 conveying
Pellets are being conveyed from suction head 1.
Operation PC 20 to 32 kW
2011-12
51
Overview, buttons, functions Store with switching unit
Ready
Suction head 1 rinsing
Suction head 1 is being rinsed using a reverse
air blast.
Suction head 2 conveying
Pellets are being conveyed from suction head 2.
Suction head 2 rinsing
Suction head 2 is being rinsed using a reverse
air blast.
Suction head 3 conveying
Pellets are being conveyed from suction head 3.
The switching unit has reached the position for
conveying from a suction head. Filling up will
now begin.
Drive
The switching unit is switching between suction
heads.
Fill up
Filling up has started and pellets are being
conveyed.
Rinse
The switching unit has switched to rinse mode. The
conveying hose is now channelling in back air in
order to dislodge any blockages in the conveying
hose or suction head.
Overtime
It was not possible to fi ll up the storage tank
within the set "Fill up time max".
The pellet store above the suction head may be
empty or the hoses may be damaged.
Suction head 3 rinsing
Suction head 3 is being rinsed using a reverse
air blast.
Reference
This line shows the current operating mode of
the pellet conveying system. Below is a list of the
possible modes:
Current operating mode
Off
The pellet conveying system is not in operation.
There is no demand from the boiler.
Empty
After rinsing of all suction heads, followed by
attempted conveying of pellets, it was not possible
to fi ll the storage tank.
The pellet store may be empty or the hoses may be
damaged.
Reference
The switching unit is moving to its reference point.
Stop
Filling up has been stopped.
Locked
All suction heads have been locked. Conveying is
thereby prevented. At least one suction head must
be enabled.
52
Subject to change due to technical improvements
www.eta.co.at
Store with switching unit Locking and changing heads
Locking/enabling a suction head
If the store above a suction head is empty or if a
suction head is damaged, it can be locked. The
switching unit will then no longer select this
suction head.
Tap the corresponding suction head to enable or
lock it.
Switching unit switching suction head
Once the maximum fi ll up level (= parameter
"Switching at") has been reached, the switching
unit automatically switches to the next enabled
suction head.
Suction head 1 conveying
Pellets are being conveyed from suction head 1.
Suction head 1 rinsing
Suction head 1 is being rinsed using a reverse
air blast.
Manually switching between suction heads
Pressing manually switches between the
enabled suction heads.
Depending on the position of the switching unit,
the following icons are displayed in the overview:
Suction head 2 conveying
Pellets are being conveyed from suction head 2.
Suction head 2 rinsing
Suction head 2 is being rinsed using a reverse
air blast.
Suction head 3 conveying
Pellets are being conveyed from suction head 3.
Suction head 3 rinsing
Suction head 3 is being rinsed using a reverse
air blast.
Operation PC 20 to 32 kW
2011-12
53
Entering stock Store with switching unit
Entering new stock quantity
after a delivery of pellets
After the store has been fi lled with pellets, the
new stock quantity should be entered.
This way, the control system is always able to
calculate the approximate pellet stock level.
In the overview screen, tap the
The "Switching at" parameter
This parameter is used to defi ne how often pellets
are conveyed from a suction head before the
switching unit switches to the next suction head.
The factory setting for this value is 20.
button.
Changing the "Switching at" value
Press the and buttons to go to the text
menu.
Tap the [Conveying system] line. In the submenu,
double-tap the line [Switching at].
A screen opens:
Enter the new stock quantity and press
to save.
The display returns to the overview.
2x
A screen for adjustments opens.
Enter the new value and press to save.
54
Subject to change due to technical improvements
Press
to return to the overview.
www.eta.co.at
Remote Control Requirements
Using remote control
With remote control, you can control your ETA
boiler over long distances via the Internet with a
PC, smartphone or tablet (pad), just as if your were
standing in front of the boiler's touch screen.
For example, if you are away from home for a long
time, you can verify that the heating is switched
off. You can also switch it back on before you
return.
The ETA boiler's touch screen is connected to the
Internet. Once you have registered your touch
screen, you can log in to the ETA homepage
<www.meinETA.at> using your access details.
You can access this homepage via a PC with
an Internet connection or a smartphone or
tablet with Internet capabilities. You can view the
touch screen at <www.meinETA.at> and control
your boiler remotely.
Boiler with touch screen and
software version 1.18.0 or higher
In order to use the remote control function, your
boiler must be equipped with an ETAtouch control
system (touch screen). The software installed on the
boiler must be version 1.18.0 or higher. If this is
not the case, the software must be updated.
Internet connection
In order to establish an Internet connection to
your boiler, the touch screen must be connected
to the Internet. To do this, the house must have a
broadband Internet connection. The connection
can be established via:
• a network cable from your modem to the touch
screen
or
• the ETA FreeLine wireless connection
Creating a partner network
The "Partner Network" function allows you to
assign access rights to other users via the home-
page <www.meinETA.at>. This gives multiple
users access to your boiler touch screen.
Example:
An installer can access customer touch screen
controls via <www.meinETA.at>. In order to allow
this, the customers simply need to authorise the
installer's access (see page 20 onward).
Data transfers, downloading and fl at rates
As soon as remote control has been activated,
the touch screen automatically connects to
the Internet. The current status of the Internet
connection is indicated by an icon at the bottom
of the screen.
The data is transmitted via the Internet, adding
to the amount of data you download via your
connection. In order to avoid excessive costs, we
recommend that you use a fl at rate or a contract
with no data download limit for your Internet
connection.
Browser for remote control
You can connect your PC, smartphone or tablet to
the boiler via <www.meinETA.at>.
In order to do this, you must have a browser that
supports HTML 5, e.g.:
• Mozilla Firefox
• Apple Safari
• Google Chrome
• Microsoft Internet Explorer version 9 or higher
• some default Android browsers 2.2 or higher
Internet connection via
smartphone or tablet
In order to use the remote control function from
your smartphone or tablet (pad), your device
must use either Android or iOS (Apple) as its
operating system. Your network operator's Internet
service must provide at least "EDGE"-level service
("3G" recommended).
Operation PC 20 to 32 kW
2011-12
55
Changing the operating mode Remote Control
Remote control operating modes
In the boiler overview, the current remote control
mode is shown at the bottom of the screen. The
remote control system has 3 different operating
modes.
A different operating mode can be selected for each
touch screen.
Remote control must always be set to "Off" or
"Only View" before rectifying errors or performing
maintenance work.
"On"
Remote control is on and the unit is connected to
the Internet. The heating system can be controlled
remotely.
Changing the operating mode of the remote
control system
In the "Boiler" overview, tap the remote control
icon at the bottom of the screen.
A selection window appears:
"Off"
Remote control is switched off. The remote control
can only be switched on again directly via the
touch screen of the boiler or the control system.
"Only View"
In "Only View" mode, the touch screen is displayed
via the homepage <www.meinETA.at>. The
boiler can be monitored, but it is not possible
to send commands via remote control.
Remote control must always be set to "Off"
or "Only View" before rectifying errors
or performing maintenance work. This
prevents others from switching the boiler on via
remote control while an error is being fi xed or
maintenance is being carried out.
Tap the operating mode you require to select it.
Switch remote control back on
If remote control has been switched off, it can only
be switched on again via the touch screen of the
boiler or the control system.
To re-activate remote control, tap the
icon on the touch screen and select "On"
in the window that appears.
56
Subject to change due to technical improvements
The
connection is being established.
symbol appears while the
www.eta.co.at
Remote Control Functions not available via remote control
For safety reasons, some commands can only be
executed at the boiler itself
With remote control, you can control the boiler as
if you were standing right in front of it.
However, for safety reasons, some parameters
and functions are unavailable remotely. These
can only be executed when somebody is by the
boiler itself. This also prevents somebody else from
activating a drive remotely while an error is being
fi xed or maintenance work is being carried out.
For example, none of the drives (stoker, ash screw
etc.) can be set to manual operation using remote
control.
Remote control must always be set to "Off"
or "Only View" before rectifying errors or
performing maintenance work (see page 14).
performing maintenance work (see page 56).
Note on blocked parameters/functions
Modifying parameters
Do not modify parameters unless you know
what their function is. Read the corresponding
section of the operating instructions before making
any modifi cations. If the explanation of the
relevant function given in the instructions is not
suffi cient for your purposes, contact a technician.
Switching remote control back on
Tap the remote control icon on the touch screen.
If a blocked command is selected while remote
control is active, a notice window will appear.
If no buttons are pressed, this notice window
automatically disappears after 4 seconds.
If the
using remote control, the ETA customer service
is able to monitor and provide assistance, for
example, but is unable to make changes.
In
switched off. Remote display of the touch screen
is therefore not possible.
"Only View” mode is selected,
"Off" mode, remote control is
A window appears:
"On" is the only available option.
"Only View" mode can only be selected when
remote control is "On".
Operation PC 20 to 32 kW
2011-12
57
Opening the touch screen Remote Control
Logging on at <www.meinETA.at>
Open the homepage <www.meinETA.at> and
enter your login data. Press the [Login] button to
log in.
Once you have logged in successfully, the user
menu will appear.
Tap the [ETAtouch devices] button.
Safety notice
Before the touch screen is displayed, a safety notice
appears. This notice must be observed in order to
ensure safe operation of the heating system.
Confi rm that you have read and understood the
safety notice by pressing [I understand]. The touch
screen will then appear. The display is the same as
the current display on the boiler.
Opening the touch screen
The [Currently connected ETAtouch devices]
window shows the currently available touch
screens.
Press the button to view the corresponding
touch screen.
In the [Registered ETAtouch devices] window, you
can use the button
each registered touch screen.
to change the data for
You can now control the boiler remotely, exactly as
if you were standing in front of it.
For safety reasons, some functions and parameters
cannot be changed via remote control
(see page 57).
(see page 15).
Errors and warnings may NOT be rectifi ed
via <www.meinETA.at>
Any errors or warnings that are displayed can
and may only be rectifi ed on site, i.e. directly
via the boiler.
Rectifying an error using the remote control is not
permitted. This is because doing so could injure
anyone who is working on the boiler to rectify the
error.
In particular, you should avoid switching
the boiler on via remote control if an error
message is present.
58
Subject to change due to technical improvements
www.eta.co.at
Remote Control Logging out
Example: Switching on the boiler
Press the On/Off button to switch on the
boiler.
Closing the touch screen display
Press [Back] to close the touch screen display.
Logging out of remote control
Once you have fi nished using remote control, press
the [Logout] button on the homepage.
The display returns to the start page.
The menu display appears again.
Press the button to view the corresponding
touch screen.
Logging out minimises the data fl ow from the
touch screen to the homepage, thus signifi cantly
reducing the download volume. This is especially
important for reducing the download volume for
Internet connections without a fl atrate tariff.
The touch screen remains connected to the
meinETA server via the Internet.
Automatic logout
after 10 minutes of inactivity
If the remote control remains unused for longer
than 10 minutes, you will be logged out
automatically.
Operation PC 20 to 32 kW
2011-12
59
Changing personal details Remote Control
Personal login data
Once you have registered, you will be sent your
personal login data (username and password).
For the login at <www.meinETA.at>, it is only
possible to change the password.
Your username will always stay the same, even if
you change the e-mail address in your personal
details.
If you change your password for logging in at
<www.meinETA.at>, your new password will also
be the password required to register another touch
screen.
If a touch screen is added at a later date, the
current login data (username and current
password) are always required.
Changing your password or personal details
Log in to the homepage <www.meinETA.at> using
your current login data.
In the user menu, tap [Edit my account]. The screen
will display your current details.
You can now change your password and core
details.
Press the [Change password] or [Change data]
button to save your changes.
If a touch screen is added at a later date, the
current login data (username and current
password) are always required.
60
Subject to change due to technical improvements
www.eta.co.at
Efficient and low-emission operation
Dear customer,
Your new boiler is labelled with the "Blue
Angel" to indicate its environmental
friendliness.
With this in mind, please note the
following for effi cient and low-emission
operation of your heating system:
1. The installation and adjustment of the heating
system must be performed only by qualifi ed and
trained personnel.
2. Use only the fuels specifi ed by us in the user
manual (in the warranty conditions). Only in this
way can low-emission, economical and fault-free
operation of your heating system be ensured.
3. Perform the maintenance and cleaning
procedures recommended by us on your heating
system at regular intervals. See your user manual
for information about these. In this way, you can
ensure that your heating system and its safety
features will work effectively to provide effi cient
and low-emission operation. You can get the
best care for your heating system by concluding a
service contract.
4. Your boiler is adjustable within an output range
between 30% and 100% of its rated output.
To avoid unnecessary emissions in low-output
operation, the systems should be operated as
much as possible in the mid- to high-output range
(adjusted to the heating needs).
Please do not use any heating controller separate
from the boiler control. Use the heating circuit
control integrated in the boiler control in
combination with a room sensor.
5. From an energy perspective, a buffer storage
tank and a combination with a solar heating
system are recommended. That ensures effi cient
and low-emission operation of your heating
system.
Operation PC 20 to 32 kW
2011-12
61
Service and maintenance records
Keep records for service, maintenance or repairs
We recommend that you keep records about all service and maintenance work, as well as malfunctions. These records
can be entered in the following pages.
Then you and our customer service will have an overview of the work performed on the system.
Date
Performed by
Service / maintenance / cleaning
Work performed / parts replaced
62
Subject to change due to technical improvements
www.eta.co.at
Service and maintenance records
Date
Performed by
Service / maintenance / cleaning
Work performed / parts replaced
Operation PC 20 to 32 kW
2011-12
63
Safety instructions
Wood Pellets - Storage Room
No entry for unauthorized personnel!
Area unsafe for children!
Smoking, naked flame or any other
ignition sources are prohibited!
PC20-32 Bedienung 2011-12 EN, subject to technical alterations
Ensure that the ETA pellet boiler is in
automatic mode while store is being filled!
Switch main power supply to OFF
before entering the pellet storage area!
Open door to pellet store, filling and
venting nozzles for minimum 60 minutes
ventilation prior to entering storeage area!
Danger! Moving parts may cause injuries!
Only enter the pellet storeage area while in
the presence of a second person!
The second person should remain outside
the storage area in case of help is needed!
64
Prevent moisture from damaging pellets!
Subject to change due to technical improvements
www.eta.co.at
Loading...