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Contents

1 - SYMBOLS USED IN THIS GUIDE

When reading this guide particular care has to be given to the parts marked with the followings symbols:

NOTE!
Suggestions for the user

WARNING!

Indicates a potentially dangerous
situation for the product and the
environment

DANGER!
Indicates serious danger
for your personal safety
and for your life

2 - CORRECT USE OF THE APPLIANCE

The ALKON appliance has been designed utilizing today’s heating technology and in compliance with the
current safety regulations.
However, following an improper use, dangers could arise for the safety and life of the user or of other
people, or damage could be caused to the appliance or other objects.
The appliance is designed to be used in pumped hot water central heating systems and for domestic hot
water production.
Any other use of this appliance will be considered improper.
UNICAL declines any responsibility for any damages or injuries caused by an improper use; in this case the
risk is completely at the user’s responsibility.
In order to use the appliance according to the scopes it was designed for it is essential to carefully follow
the instructions indicated in this guide.

3 - WATER  TREATMENT

The hardness of the mains water supply conditions the frequency with which the heat exchanger is cleaned.

In hard water areas where the main water can exceed 15°f total hardness, a scale reducing device is recom-
mended. The choice of this device has to be made taking into consideration the water’s characteristics.

In order to improve the resistance to lime scale, it is recommended to adjust the domestic hot water tempera-
ture as near as possible to the one you really require.

The use of a modulating room thermostat reduces the dangers of lime scale  formation.

We recommend you to check the state of cleanliness of the domestic hot water heat exchanger at the end of the
first year and subsequently, on the basis of the amount of lime scale found, this period can be extended to two
years.

CONTENTS

1

Symbols used in this guide .......................................................................................................................................................

2

2

Correct use of the appliance ....................................................................................................................................................

2

3

Water treatment .........................................................................................................................................................................

2

4

Information to be handed over to the user ...............................................................................................................................

3

5

Safety warnings .........................................................................................................................................................................

3

6

Operating instructions ...............................................................................................................................................................

4

6.1

Control panel ......................................................................................................................................................................

4

6.2

Check list before commissioning the boiler ......................................................................................................................

6

6.3

Boiler operation ..................................................................................................................................................................

6

DHW production (“R” model  combined with an external storage tank) .........................................................................

6

DHW production (“C” version) ...........................................................................................................................................

6

Energizing the “pre-heat” function ....................................................................................................................................

6

CH Mode ............................................................................................................................................................................

6

Shutting down the boiler ....................................................................................................................................................

6

6.4 Frost protection mode ........................................................................................................................................................ 6
6.5 Eliminating the faults .......................................................................................................................................................... 7

Summary of Contents for ALKON 24 B 60

Page 1: ...00332926 1st edition 09 2008 ALKON 24 B 60 ALKON 35 B 60 USER SOPERATING INSTRUCTIONS ...

Page 2: ...s indicated in this guide 3 WATER TREATMENT The hardness of the mains water supply conditions the frequency with which the heat exchanger is cleaned In hard water areas where the main water can exceed 15 f total hardness a scale reducing device is recom mended The choice of this device has to be made taking into consideration the water s characteristics In order to improve the resistance to lime s...

Page 3: ...agni l apparecchio in modo che possa essere consultato dal nuovo proprietario e o dall installatore Nel caso di danni a persone animali e cose derivanti dalla mancata osservanza delle istruzioni contenute nel presente manuale il costruttore non può essere considerato responsabile 4 INFORMAZIONI DA FORNIRE ALL UTENTE A CURA DELL INSTALLATORE 5 AVVERTENZE PER LA SICUREZZA ATTENZIONE L installazione ...

Page 4: ...NSTRUCTIONS 6 1 CONTROL PANEL E Burner On indicator led Green F Not active G Reset chimneysweeper mode key H Lock out led indicator Red I System temperature control pressure gauge Summer winter selector Central heating temperature control knob By turning this knob it is possible to choose the following operating modes Summer only DHW production Winter DHW production and central hea ting temperatur...

Page 5: ...safety cut off device has shut down the boiler Reset key The function of this key is to reset correct boiler ope ration after the cut off device has shutdown the boiler red led indicator illuminated If the cut off device operates more than 3 times causing boiler shutdown do not try to reset the boiler yourself Contact your nea rest Unical authorized After Sales Service Centre Reset key with Chimne...

Page 6: ...he electrical supply to the boiler the green Power On led is not illumi nated If the boiler will remain shut down for a longer period turn the Domestic hot water production MAX On Off gas cock into the Off position and if fitted turn the cold water supply cock into the Off position In the case of long periods of inactivity of the boiler close the gas and water gate valves Remember that the install...

Page 7: ...ARNING If the boiler goes into lock out and or the leds continue to flash repeatedly or remain illumi nated do not try to reset the boiler yourself Contact your nearest Unical authorized Af ters Sales Service Centre Burner lock out led constantly illuminated Cause IThe burner s lock out device has intervened due to no gas supply in this case check that the gas service cock is open presence of air ...

Page 8: ...ag info unical ag com The Unical declines every responsibility for the possible inaccuracies if owed to errors of transcript or press Also reserves the right to bring those changes that it will hold necessary to it own products or profits without jeopardizing its essential characteristics ...

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