BLUEHELIX PRIMA 24 C
11
EN
cod. 3541R820EN - Rev. 03 - 03/2020
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 ves-
sel), or intermittent (less than 20% of system water content).
The water within a heating system must have the characteristics required by UNI
8065, and comply with laws and regulations in force and the provisions of
EN14868 (protection of metallic materials against corrosion).
The filling water (first filling and subsequent replenishment) must be clear, with har-
dness below 15°F and treated with suitable chemical conditioners against the ini-
tiation 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 in the system must be periodically checked (at least twice a year during
the season when the systems are used, as required by UNI8065) and have: pos-
sibly a clear appearance, hardness below 15°F for new systems or 20°F for exis-
ting systems, pH above 7 and below 8.5, iron content (Fe) below 0.5 mg/l, copper
content (Cu) below 0.1 mg/l, chloride content below 50mg/l, electrical conductivity
below 200 µs/cm, and must contain chemical conditioners in a concentration suffi-
cient to protect the system for at least 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 protection for yellow metals (copper and its alloys), anti-fouling agents for
scale, 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 hea-
ting mode when the system delivery 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,
for system protection use a suitable antifreeze liquid that meets the same require-
ments as set out above and provided for by Standard UNI 8065.
In the presence of adequate chemical/physical system and feed water treatments
and related high cyclicity controls able to ensure the required parameters, for in-
dustrial process applications the product can be installed in open-vessel systems
with vessel hydrostatic height able to ensure compliance with the minimum opera-
ting pressure indicated in the product technical specifications.
The presence of deposits on the boiler exchange surfaces due to non-com-
pliance with the above requirements will involve non-recognition of the
warranty.
