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

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 denes 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.

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-

cications 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 certication.

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

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, efciency and performance. The

service engineer should complete a relevant ser-

vice record after each service.

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 inuences 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

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 efciency. 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 efciency 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.

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.

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.

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 briey.

The water pressure will be shown.

Press the Step key briey to return to the Good

reading.

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. Briey 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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