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INSTALLATION
PILOT
-C14-
MANUAL
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9
Central heating installations must be cleaned
in order to eliminate debris (copper, fi lings,
soldering waste) related to the set-up of the
installation or from chemical reactions between the
metals.
Futhermore, it is important to
protect the
central heating installations from risks of
corrosion, limescale, and microbiological
development
through use of a corrosion inhibitor
which is suitable for all kinds of installations (steel or
cast-iron radiators, PEX underfl oor heating).
PRODUCTS USED FOR HEATING WATER
TREATMENT MUST BE APPROVED BY THE
LOCAL OR NATIONAL PUBLIC HYGIENE
AND HEALTH AUTHORITY.
4.2.1.9.1 - Filling water
The materials used for producing a heating circuit are of diff erent
natures. Instances of corrosion may occur through galvanic coupling
in both new and existing installations.
The fi lling of the heating circuit must only be done with untreated water
(no water softener) from the drinking water network. Water from any other
source )rain-water, well-water, etc...), must be analysed and
MUST
have
the following properties:
8,5
U
PH (acidity)
U
9,5
Chlorides
U
60 mg / litre
Conductivity
< 1000 μS / cm
5
U
TH (hardness in French °)
U
15
We recommend the use of products in the
SENTINEL
range by
GE
BETZ
for preventative and curative treatment of the heating circuit.
• For new installations : (less than 6 months old):
- Clean the installation with a universal cleaner to eliminate
the debris from the installation (copper, fi bres, soldering
fl uxes) Example :
SENTINEL X300
- Throughly rinse the installation until the water runs clear,
with no traces of impurities left.
- Protect the installation against corrosion with a corrosion
inhibitor, example:
SENTINEL X100
. Or against corrosion
and freezing with an inhibitor with an anti-freeze additive.
Example :
SENTINEL X500
.
• For existing installations:
- Desludge the installation with a desludging product
to eliminate any sludge from the installation. Example:
SENTINEL X400.
- Throughly rinse the installation until the water runs clear,
with no traces of impurities left.
- Protect the installation against corrosion with a corrosion
inhibitor, example:
SENTINEL X100
. Or against corrosion
and freezing with an inhibitor with an anti-freeze additive.
Example :
SENTINEL X500.
4.2.1.9.2 - Treatment of the heating circuit
Corrosion inhibitor :
- protects against the formation of limescale
- prevents «pinhole» type corrosion
- prevents, in new installations, the formation of sludge
and the proliferation of bacteria (in low temperature
networks: algae)
- prevents the formation of hydrogen
- eliminates the sound of the generators
Treatment products from other manufacturers can be used if they
guarantee that the product is appropriate for all the materials used
in the appliance and off ers effi
cient resistance to corrosion. To fi nd
this information refer to their user manual.
4.2.1.9.3 - Purging the installation
The oxygen present in the air is extremely corrosive.
All necessary
measures must be taken to ensure that the installation can be
continuously purged. Automatic air purging valves should be placed
at each high point of the installation, and manual air purging valves
should be installed on each radiator.
Any deterioration of the appliance due
to inappropriate fi
lling water, and/or
corrosion in the absence of the use of treatment
products, and/or improper purging of the
installation, will render the warranty null and
void.
RENDERING THE WARRANTY NULL AND VOID
4.2.1.9.4 - Connecting the pressure relief
valve
The Heat Pump and the
Pilot
are both equipped with pressure-relief
valves. The
Pilot’s
pressure-relief valve is set at 3 bars.
The pressure-relief valve on the Heat Pump sets the maximum
acceptable pressure in the installation (2.5 bars when hot). The
maximum service pressure in the Heat Pump must, consequently,
be lower than 2.5 bars.
Example : If the Heat Pump is positioned 5m below the
Pilot
, the
pressure reading on the
Pilot
would be 0.5 bars less than
the real pressure of the water in the Heat Pump. In this case,
the maximum service pressure for the
Pilot
would be 2 bars.
Therefore it would be advisable to fi ll the heating circuit at
an intermediary pressure (between 1 and 1.5 bars).
For safety reasons (potential presence of fl ammable R290 gas),
drainage of the Pilot’s pressure-relief valve must
MANDATORILY
be done
outside the building
. The outlet of the drainage pipe (4m
length provided with the pilot) must be placed downwards in order
to avoid any introduction of water inside, any risk of obstruction due
to frozen water or any other pollution (see drawing).
If the provided drainage pipe is too short, it’s mandatory to use a
well-adapted length (can by supplied on demand). It will have to
be installed as well as there will be no pinch on it, it will then ensure
the drainage of the overpressure from the 3 bar safety valve outside
the building.
The Pilot’s pressure-relief valve drainage pipe
must be properly secured until the outside of
the building without any pinching zone.
WARNING
Failure to comply with this requirement
concerning the evacuation of overpressure outside
the building releases the heat pump manufacturer
from any liability in case of incident.
