Plumbing Connections; Important; System Water Characteristics - Ferroli TOR Instruction For Installation And Maintenance

2.4 PLUMBING CONNECTIONS

2.4.1 Important

B
The safety valve outlet must be connected to a funnel or collection pipe to prevent water spurting onto the floor
in case of overpressure in the heating circuit. Otherwise, if the discharge valve cuts in and floods the room, the
boiler manufacturer cannot be held liable.
B
Before installation, flush all the pipes of the system thoroughly to remove any residuals or impurities that could
affect proper operation of the unit.
In case of replacement of generators in existing installations, the system must be completely emptied and cleaned of any
sludge and pollutants. For that purpose only use suitable guaranteed products for heating systems (see next section),
that do not harm metals, plastics or rubber. The manufacturer declines any liability for damage caused to the generator
by failure to properly clean the system.
Make the respective connections, paying attention to the symbols provided on the unit.

2.4.2 System water characteristics

B
The boilers are suitable for installation in heating systems with non-significant entry of oxygen (ref. systems "case
I" EN14868). A physical separator (e.g. plate heat exchanger) must be provided in systems with continuous entry
of oxygen (e.g. underfloor systems without antidiffusion pipes or open vessel), or intermittent (less than 20% of
system water content).
The water inside a heating system must comply with the applicable laws and regulations, the characteristics required by
UNI 8065, and the indications of EN14868 (protection of metal materials against corrosion) must be observed.
The filling water (first filling and subsequent replenishment) must be clear, with hardness below 15°F and treated with
suitable chemical conditioners against the initiation of corrosion, that are not aggressive on metals and plastics, do not
develop gases and, in low-temperature systems, do not cause proliferation of bacterial or microbial masses.
The water contained in the system must be checked regularly (at least twice a year during the season of use, as required
by UNI8065) and have: a possibly clear appearance, a hardness lower than 15°F for new systems or 20°F for existing
systems, a PH higher than 7 and less than 8.5, an iron content (Fe) less than 0.5 mg/l, a copper content (Cu) less than
0.1 mg/l, a chloride content lower than 50mg/l, an electrical conductivity lower than 200 µS/cm, and must contain chemical
conditioning agents in a concentration sufficient to protect the system at least for one year. Bacterial or microbial loads
must not be present in low temperature systems.
Only use conditioners, additives, inhibitors and antifreeze liquids declared by the producer suitable for use in heating
systems and that do not cause damage to the heat exchanger or other components and/or materials of the boiler and
system.
Chemical conditioners must ensure complete deoxygenation of the water, contain specific protective agents for yellow
metals (copper and its alloys), anti-scaling agents for limestone, neutral PH stabilizers and, in low-temperature systems,
specific biocides for use in heating systems.
Recommended chemical conditioners:
SENTINEL X100 and SENTINEL X200
FERNOX F1 and FERNOX F3
EN
14
cod. 3542B750 - Rev 09 - 02/2024
TOR