Atag A325EC User manual

User manual
A200S A203C
A320S A325C
  A325EC

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Contents
1 Introduction...........................................................................................15
2 Safety...................................................................................................17
3 Boilerdescription..................................................................................18
4 Displayandfunctionkeys.....................................................................19
 4.1 Resetkey......................................................................................19
 4.2 Settingthehotwatertemperature................................................20
 4.3 Settingtheheatingwatertemperature..........................................20
 4.4 Requestingcurrentdata...............................................................20
5 Fillingtheinstallation............................................................................21
6 Decommissioningtheboiler.................................................................22
7 Comfort/Ecosettingofhotwater..........................................................23
8 Pumpcontinuously...............................................................................24
9 Errors....................................................................................................25
10Maintenance.........................................................................................25
11Warranty...............................................................................................25
Important!
It is in your own interest that we should know that you have an ATAG
boiler. Please ll out the warranty card completely and send it back to
us. Then we can be fully at your service.

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These operating instructions describe the func-
tioning and the operating of the ATAG A boilers.
This manual is for the end user. For installation
and servicing there is an installation & servicing
instructions manual for the installer.
Read this manual fully before operating the boiler.
In case of doubt or errors contact your installer.
ATAG Heating reserves the right to change the
specications and dimensions without prior notice.
Work on the boiler must be carried out by a com-
petent person, (Ref: Gas Safe Register) using
correctly calibrated instruments with current test
certication.
When replacing parts use only ATAG Service parts.
Contact details for ATAG Heating UK Ltd can be
found on page 25 of this manual.
1 Introduction

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The Benchmark Scheme
ATAG Heating UK Ltd is a licensed member of
the Benchmark Scheme which aims to improve
the standards of installation and commissioning
of domestic heating and hot water systems in the
UK and to encourage regular servicing to optimise
safety, efciency and performance.
Benchmark is managed and promoted by the
Heating and Hotwater Industry Council. For more
information visit www.centralheating.co.uk
Please ensure that the installer has fully comple-
ted the Benchmark Checklist on the inside back
pages of the installation instructions supplied with
the product and that you have signed it to say that
you have received a full and clear explanation of
its operation. The installer is legally required to
complete a commissioning checklist as a means
of complying with the appropriate Building Regu-
lations (England and Wales).
All installations must be notied to Local Area
Building Control either directly or through a Com-
petent Persons Scheme. A Building Regulations
Compliance Certicate will then be issued to the
customer who should, on receipt, write the Noti-
cation Number on the Benchmark Checklist.
This product should be serviced regularly to opti-
mise its safety, efciency and performance. The
service engineer should complete the relevant
Service Record on the Benchmark Checklist after
each service.
The Benchmark Checklist may be required in the
event of any warranty work and as supporting
documentation relating to home improvements
in the optional documents section of the Home
Information Pack.“

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Work on the installation should only be carried out
by qualied personnel with calibrated equipment.
When replacing parts, only ATAG Service
components may be used.
If you smell gas:
- No naked ames! No smoking!
- Do not switch lights on or off or use other
electrical switches.
- Do not use the phone
- Close the gas mains
- Open windows and doors
- Warn the occupants and leave the building
- Only call the gas company or installer once you
are outside the building.
Corrosion protection
Do not use sprays, chlorine-containing cleaning
products, solvents, paints etc. in the vicinity of the
device or its air supply. These substances have
an adverse impact on the device and can lead to
corrosion that may result in failures.
Checking the heating water
Regularly check the water pressure of the heating
installation
Always use potable water for lling the installation.
Adding chemical agents such as frost and
corrosion inhibitors are only to be added by your
installer.
If in doubt, check with your installer or ATAG
Heating UK Ltd (See contact details on page 25).
2 Safety

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The ATAG A is a closed, condensing and
modulating CH boiler with or without an
integrated hot water supply which meets the
European standard (CE).
A declaration of conformity can be obtained from
the manufacturer.
The efficiency of the boiler is very high and
the radiation convection and standby losses
very low. The emission of noxious substances
is far below the fixed standards so the boiler is
SEDBUK Class A rated.
3 Boiler description
Example SEDBUK ClassA

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The boiler is equipped with a door at the front. After
opening the door you will nd a brief overview of
the meaning of all the keys and icons. These are
described below.
4 Display and function keys
4.1 Reset-key
The reset key restarts the boiler after a malfunction
has occurred.
In case of a failure the symbol is displayed
with a Cx xx code.
In other cases the Reset button has no function
and will not respond when operated.
See 9 for a brief overview of codes.
i
+
--
i
R
+
ba r
( OK )
( ESC)
+
--
i
R
+
Boiler operational
Error indication
Central heating function
DHW function
Service mode or Blocking
Indicator for
program:
Central Heating
DHW
Pump
Information key
Setting of boiler temperature
Reset key
Setting of
DHW temperature

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Press + or - of the key;
The display will show the set value while ashing;
Press + or – to change the set value.
Each change becomes active directly.
Hot water program OFF:
Press – until the lowest value is reached and then
press – again.
The display is showing -- and the upper is off.
Switching on works in reverse order.
Press + or - of the key;
The display will show the set value while ashing;
Press + or – to change the set value.
Each change becomes active directly.
Heating program OFF:
Press – until the lowest value is reached and then
press – again.
The display is showing -- and the upper is off.
Switching on works in reverse order.
i
+
--
i
R
+
i
+
--
i
R
+
i
+
--
i
R
+
Briey press the i-button or scroll button to obtain
the following values:
A0 = Supply water temperature
A1 = Return water temperature
A2 = Hot water temperature
A4 = Flue gas temperature
(Only if a ue gas sensor is connected)
A5 = Outside temperature
(Only if an outside sensor is connected)
A6 = Water pressure
A9 = Rpms of fan
To return to the standard view press ESC.
4.2 Setting the hot water temperature
4.3 Setting the heating water temperature
4.4 Requesting current data

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5 Filling the heating installation
If you want to top up the heating installation, proceed as follows:
(If in doubt, check with your installer)
1 Connect the lling hose to the cold water tap;
2 Fill the hose completely with drinking water;
3 Connect the lled hose to the lling and draining valve of the heating installation;
4 Open the lling and draining valve;
5 Open the cold water tap;
6 Slowly ll the CH installation to 1,5-1,7 bar:
Press the i-key until A6 appears (water pressure). The value on the display
increases;
7 Close the cold water tap;
8 The code C1 05 will appear on the display the moment the pressure
exceeds Venting program of approx. 7 min. becomes active;
9 Bleed the entire CH installation: start at the lowest point;
10 Check the water pressure and if necessary top off until 1.5 to 1.7 bar
11 Make sure the cold water tap and lling and draining valve are closed;
12 Disconnect the lling hose;
After the venting program (c1 05) of approx. 7 minutes has ended, the boiler
will be operational again.
Check the water pressure regularly and top it up if necessary. The operating
pressure in the system under cold conditions should be between 1.5 and 1.7
bar.
It may take some time before all the air has disappeared from a newly lled
installation. Especially in the rst week, sounds may be heard that indicate air. The
automatic air vent in the boiler will let this air escape, causing the water pressure
to drop during this period and water will need to be relled again.

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ba
r
In case of, for instance, a holiday:
Heating and hot water OFF:
Press the - key of both keys until the lowest value
has been reached. Release the key and press
the – key once again. The display is showing --.
The program has thus disabled. The arrow to the
left is off.
In case of work on the heating installation:
Make sure no heat request occurs: let no hot water
tap run and set the room thermostat to low. Pull
the plug from the wall socket. If the installation is
being drained, you have to take into account that
part of the heating water will remain in the boiler.
Make sure that the remaining heating water in the
boiler cannot freeze in case of frost.
6 Decommissioning the boiler

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The hot water supply has been preset in the
factory to Comfort. This means that hot water is
available instantly when you open the hot water
tap. If desired, you can choose the Eco mode.
This means that when tapping, it will take a little
longer before hot water will ow from the hot water
tap. This depends on the pipe length between the
boiler and water points and the current heating
temperature.
Changing the setting:
Press the OK key for 3 seconds.
The display is showing ‘P6 (alternated with) 81’;
Press the Scroll key 1x;
The display is showing ‘P6 (alternated with) 84’;
Press the OK key;
The display is showing ‘b0’;
Press the Scroll key 1x;
The display is showing ‘b1’;
Press the OK key;
The display is showing ‘on’ (= Comfort);
Adjust the value by means of the + or - key to
‘off’ (= Eco);
Briey press the OK key to conrm the new
setting.
The display is showing the chosen parameter
again
Press the ESC key until the default display is
shown again.
If during 8 minutes no key has been used,
the default display is displayed on the screen
automatically.
OK
ESC
scroll
7 Comfort/Eco setting of hot water

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The pump is preset in the factory to automatic. This
means that the pump is switched on when there is
a request for heating or hot water. If necessary, the
pump can also operate continuously. This requires
the following actions:
Press the OK key for 3 seconds.
The display is showing ‘P6 (alternated with) 81’;
Press the Scroll key 1x;
The display is showing ‘P6 (alternated with) 84’;
Press the OK key;
The display is showing ‘b0’;
Press the OK key;
The display is showing ‘off’ (= automatic);
Adjust the value by means of the + or - key to
‘on’ (= continuously);
Briey press the OK key to conrm the new
setting.
The display is showing the chosen parameter
again
Press the ESC key until the default display is
shown again.
An arrow appears on the display in the bottom
left-hand corner, indicating that the pump is now
continuously switched on.
If during 8 minutes no key has been pressed,
the default display is displayed on the screen
automatically.
ba
r
In case of frost you are
advised to have the
circulation pump run
continuously to reduce the
chance of frozen pipes.
8 Pump continuous
OK
ESC
scroll

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In the event of a failure (this is indicated by a c
and number code on the display) you can try to
eliminate the failure by pressing the Reset key. If
the failure persists, please contact your installer
as soon as possible and tell him the number code.
There are also messages with a c and a number
code that constitute no failures. These messages
will cancel themselves over time or after lling (or
draining) the heating system. Operating the reset
button has no effect then, for example:
c1 05 venting program active (approx. 7 min.)
c1 17 water pressure too high
c1 18 water pressure too low
If leaks occur in the installation, please contact
your installer.
Venting program active
Conclude a maintenance agreement with your
installer in order to have the installation periodically
checked and adjusted.
The cover of the boiler consists of plastic parts,
which can be cleaned with a normal (non-
aggressive) cleansing agent.
For the warranty conditions, see the Warranty
Card that has been delivered with the boiler.
9 Errors
10 Maintenance
11 Warranty
ATAGHeatingUKLtd.•Unit3•BeaverTradePark•QuarryLane•Chichester•WestSussex•PO198NY
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