Installation In Old Systems Or Systems To Be Upgraded - Beretta POWER PLUS Installation Instruction

Installation In Old Systems Or Systems To Be Upgraded

Where Boilers are installed in old systems or systems to
be upgraded, check that:
- The flue is suitable for the temperature of the products
of combustion with condensing operation, calculated
and manufactured according to the standards, as strai-
ght as possible, airtight, insulated and not blocked or
choked. It must also be fitted with suitable condensate
collection and drain systems
- The electrical system has been installed in compliance
with the relevant standards by qualified personnel
- The fuel supply line and any cylinders or tanks (LPG)
are made and installed according to the relevant stan-
dards
- The expansion vessel can completely absorb the
expansion of the fluid contained in the system
- The flow-rate and the discharge head of the pump are
suitable for the characteristics of the system
- The system is flushed, treated, vented and pressure
tested. To clean the system, see the paragraph on
"Water connections", page 28. The manufacturer is not
liable for any damage caused by the incorrect flushing,
treatment and venting etc of the system.
- The condensate drain system (drain trap) is connected
and runs into the sewerage drain or a neutraliser, where
required by the legislation in force.
- A treatment system is available for special supply/top-
up water requirements (for the reference values, see
the table).
b
The manufacturer is not liable for any damage
caused by the incorrect layout or installation of the
flue system which must be in-accordance with any
current standards and law applicable
b
The flues for condensing boilers are made from
special material and differ from those used for stan-
dard boilers.
SUPPLY WATER VALUES
pH
Conductivity
Chloride ions
Sulphuric acid ions
Total iron
Alkalinity M
Total hardness
Sulphur ions
Ammonia ions
Silica ions
6-8
less than 200 mV/cm (25°C)
less than 50 ppm
less than 50 ppm
less than 0,3 ppm
less than 50 ppm
less than 20°F
none
none
less than 30 ppm
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