Ferroli BlueHelix HiTech RRT H Instrucciones De Uso, Instalación Y Mantenimiento página 302

System water characteristics
BlueHelix HiTech RRT H boilers are suitable for installation in heating systems with non-
A
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 corro-
sion, 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 lime-
stone, 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
The unit is equipped with a frost protection system that activates the boiler in heating mode
when the system flow water temperature falls below 6°C. The device is not active if the
power and/or gas supply to the unit is turned off. If necessary, to protect the system use a
suitable antifreeze liquid that meets the above requirements and provided for by UNI 8065.
In the presence of adequate chemical/physical system and feed water treatments and re-
lated high cyclicity controls able to ensure the required parameters, for industrial process
applications the product can be installed in open-vessel systems with vessel hydrostatic
height able to ensure compliance with the minimum operating pressure indicated in the
product technical specifications.
The presence of deposits on the boiler exchange surfaces due to non-compliance
with the above requirements will involve non-recognition of the warranty.
302
BlueHelix HiTech RRT H
cod. 3541V484 - Rev 02 - 01/2024
EN