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General Information
1.1 -
SYMBOLS USED IN THIS MANUAL
When reading this manual 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 pro-
duct and the environment
DANGER! Indicates serious
danger for your personal safety
and for your life
1.2 - A CORRECT USE OF THE APPLIANCE
The AIREX 2S 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 hot water central heating systems.
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 foreseen scopes it is necessary to carefully follow the in-
structions given in this manual.
1.3 - WATER TREATMENT (refer to specific guide)
• In hard water areas where the main water can exceed 15°f total hardness, a scale reducing device is recommen-
ded. The choice of this device has to be made taking into consideration the characteristics of the water.
1.4 - INFORMATION TO BE HANDED OVER TO THE USER
The user has to instructed on the use and operation of his heating system, in particular:
- Hand over these instructions to the end user of the appliance, together with any other literature, regarding this ap-
pliance, placed inside the envelope contained in the packaging.
The user has to keep these documents in a safe
place in order to always have them at hand for future reference.
- Inform the user on the importance of air openings and of the flue outlet system, stressing the fact that it is absolutely
forbidden to make any alterations to the boiler.
- Inform the user how to check the system’s water pressure as well as informing him how to restore the correct pres-
sure.
- Explain the function of temperature controls, thermostats, heating controls and radiators, to ensure the greatest
possible fuel economy.
- If the appliance is sold or transferred to another owner or if the present user moves home and leaves the appliance
installed, ensure yourself that the manual always follows the appliance, so that it can be consulted by the new owner
and/or installer.
1
GENERAL INFORMATION
Warning: this manual contains instructions to be used exclusively by the installer and/or a competent person in accor-
dance with the current laws.
The end user is NOT autorized to carry out any service work on the boiler.
Failure to follow the instructions given in this manual, which is supplied with the boiler, could cause injury to persons,
animals or damage to property. UNICAL shall not be held liable for any injury and/or damage.
