A.O. Smith Epsilon EB-40 Manuale utente
8G.52.9000/10.11 Changes reserved E.&O.E.
0310 350
Innovation has a name.
Light Commercial High Efficiency
Condensing Boiler
EB - 40/50
Epsilon
User Manual
2
User Manual Epsilon-Series
Content
Introduction ........................................................ 3
Safety ................................................................ 5
Description of the boiler ..................................... 6
Explanation of the function keys and display..... 7
The Reset key ................................................... 7
The boiler display .............................................. 8
Water pressure in the central heating system ... 9
Replenishing the central heating ..................... 10
Turning the boiler off ........................................ 11
Error, maintenance and warranty .................... 12
Adjustments ..................................................... 13
Important!
It is in your own interest to register your warranty, visit the website
www.aosmithinternational.com/content/product-registration and ll
in the Product Registration Form. Registering the boiler gives the
owner of the boiler supplied by A.O. Smith Water Heaters the right to the
warranty which denes the commitments of A.O. Smith Water Heaters
to the owner. You can nd the warranty conditions in the Installation
and Service Manual which is supplied with the boiler.
3
User Manual Epsilon-Series
These operating instructions describe the func-
tioning and the operating of the A.O. Smith Epsi-
lon 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.
A.O. Smith reserves the right to change the spe-
cications and dimensions without prior notice.
Work on the boiler must be carried out by a
competent person, (Ref: Gas Safe Register)
using correctly calibrated instruments with
current test certication.
When replacing parts use only A.O. Smith
Service parts.
Contact details for A.O. Smith can be found on
the back page of this manual.
Introduction
4
User Manual Epsilon-Series
Please ensure that the installer that you have
received a full and clear explanation of its opera-
tion. The installer is legally required to complete
a commissioning checklist as a means of com-
plying with the appropriate Building Regulations
(England and Wales).
This product should be serviced regularly to opti-
mise its safety, efciency and performance. The
service engineer should complete a relevant ser-
vice record after each service.
5
User Manual Epsilon-Series
The device may be operated only by authorized
persons who have been instructed on the
operation and use of the device. Improper
use may cause damage to the device and / or
to the connected installation.
The appliance is not to be used by children
or persons with reduced physical, sensory
or mental capabilities, or lack of experience
and knowledge, unless they have been given
supervision or instruction
Children being supervised not to play with the
appliance.
In case you smell gas:
- No naked ames! Do not smoke!
- Do not operate electrical switches for lights or
any other appliance.
- Do not use a telephone
- Turn off gas supply at meter
- Open windows and doors
- Notify any persons in the building and leave
the building at once.
- Call Gas company or installer only when out-
side the building
Protection for corrosion
Do not use any sprays, chlorine containing agents,
solvents, paint etc. around the boiler or around
the air intake supply entrance of the boiler. These
substances have negative inuences on the boiler
and can lead to corrosion resulting in failure of
the boiler.
Checking the water pressure
Check the water pressure in the central heating
installation regularly.
Use only potable water for lling.
Additives only after clearance by A.O. Smith.
Contact your installer in case of doubt.
Safety
6
User Manual Epsilon-Series
The Epsilon boiler is a room sealed, condensing
and modulating central heating boiler.
The boiler is provided with a compact stainless
steel heat exchanger with smooth tubes. A well
thought out principal using durable materials.
The boiler burns gas for supplying warmth. The
heat is transferred in the heat exchanger to the wa-
ter in the central heating system. By cooling down
the ue gasses condensate is formed. This results
in high efciency. The condensate, which has no
effect on the heat exchanger and the function of
the boiler, is drained through an internal siphon.
The boiler is provided with an intelligent control
system (CMS Control Management System). The
boiler anticipates the heat demand of the central
heating system or the hot water facility.
When an outside sensor is connected to the boiler,
the boiler works weather dependantly. This means
that the boiler control measures the outside tem-
perature and ow temperature. With this data the
boiler calculates the optimal ow temperature for
the installation.
The efciency of the boiler is very high and the
radiation convection and standby losses very low.
The emission of noxious substances is far below
the xed standards.
On the left side of the boiler there is a small door.
Through the transparent part you can see the
boiler status on the display. After opening this
door you will nd the function keys. On the right
side of the door you will nd an instruction card in
a sleeve with an explanation of the display mes-
sages and function keys. This is also described in
the following pages.
Description of the boiler
Room sealed boiler
The boiler retreives its com-
bustion air from outside
then discharges the ue
gasses to the outside.
Condensing
Retrieves heat from
the ue gasses. Water
condensates on the heat
exchanger.
Modulating
Higher or lower burning
according to the heat
demand.
Stainless steel
Super solid kind of steel
which keeps its quality for
life. It will not rust or erode
in contrast to composition
materials, like aluminium.
7
User Manual Epsilon-Series
On/off key Central heating.
When 'on' the indication L.E.D. is illuminated.
On/off key Domestic hot water (DHW)
When 'on' the indication L.E.D. is illuminated.
On/of key Pump programm. Continuously yes/no
When 'on' the indication L.E.D. is illuminated.
In most situations the pump can stay in position 'off'.
During severe frost It is possible (when there is no outside
sensor connected), to choose manually to let the circulation
pump circulate continually thus reducing the chance of freezing
pipes (garage, attic or other cold spaces / rooms) which are
sensitive to frost.
Explanation of the function keys and display
The control panel is provided with a reset key.
When a fault occurs it will be shown by the ashing
E (Error) with a number code after which the boiler
is shut down. After pressing the reset key you can
try to start the boiler again. If the error message
keeps occurring contact your installer.
The Reset key
Central heating
on/off
Domestic Hot water
on/off
Pump programm
on/off
Reset key
Unlocking the boiler
Display
Mode key
Selecting chapters
(Store)
Step key
Scrolling
Indication L.E.D.'s
When the pump is switched
on continuously it can lead
to undesired heating up of
the central heating system
during the summer.
8
User Manual Epsilon-Series
The boiler display
The reading of the boiler display can be done in two ways.
The Good reading
During this reading the display will only show
what is necessary. Under normal circumstances
the display will give a Good reading. If a fault
is detected the boiler will be blocked. This will be
shown with, alternate display of Good, with an E
of Error or a BL of Blocking and a number code.
For further information refer to page 13 "Errors,
maintenance and warranty" .
The technical reading
During this reading the display will show in which
operating status the boiler is active. The techni-
cal reading is shown alternately with the water
pressure. The rst gure in the technical read out
indicates the status in which the boiler is active
and the third and fourth gure indicate the water
temperature of the boiler. For example in the
reading P 1.9 the character P stands for pres-
sure which represents the water pressure. The
third and fourth gure indicate the water pressure
in bar.
If a fault is found, the same is shown as described
under "The Good reading".
Selecting the Technical or Good reading.
- Press the Step key for 5 seconds.
The display will change from the Good reading to
the technical reading or vice versa.
9
User Manual Epsilon-Series
Water pressure in the central heating system
The installation will function optimally with a water
pressure of between 1,5 and 1,7 bar.
If the water pressure drops below 1 bar, the display
will show FILL. During this message the boiler
will remain functioning at a reduced level. After
replenishing the system just above 1,5 bar the
message FILL will disappear and the boiler will
function normally again.
When the water pressure drops below 0,7 bar, the
display will show a ashing FILL text.
The boiler will shut down and will function normally
again after replenishing the system to just above
1,5 bar.
To retreive the water pressure on the display from
the Good reading:
- Press the Step key once briey.
The water pressure will be shown.
Press the Step key briey to return to the Good
reading.
10
User Manual Epsilon-Series
Replenishing the central heating system
The central heating installation needs to be lled with potable (drinking) wa-
ter. For topping up the installation you use the lling loop according to the
following procedure:
(If in any doubt please contact your dealer)
1. Switch all functions off (heating, DHW and pump);
2. Briey push the 'STEP'-button: P x.x = water pressure in bar;
3. Slowly open the lling loop (Indication on display increases);
4. Fill up slowly to 1.5 to 1.7 bar;
5. STOP appears on the display;
6. Close the lling loop;
7. De-aerate the complete installation, start at the lowest point;
8. Check the water pressure and if necessary top it up;
9. Close the lling loop;
10. Activate functions required (heating , DHW and/or pump );
11. If A xx appears on the display, wait for 17 minutes;
12. Check the waterpressure and if necessary top it up to 1,5 to 1,7 bar
13. Close the lling loop;
14. Press the ‘STEP’-button;
15. Be sure that the lling loop is closed.
After the automatic de-aeration programm (A xx) is nished the boiler will
return to the Good reading or Technical reading.
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