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installer
HRC
70
35kW HIGH TEMPERATURE HEAT PUMP
manual
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18
19
A3 - Frost protection
In cases where the HRC
70
Heat Pump cannot operate (exterior
temperature is outside of the operating range), and a back-up is
authorised (boiler or electrical), it will automatically be protected
from frost or ice as the circulator pump will operate and draw heat
from the heating circuit which has its temperature maintained by
the HRC
70
Pilot’s electrical back-up or back-up boiler.
The water temperature remains over 5°C.
In all cases the piping must be properly insulated.
Underground piping should be installed within protective
guttering.
However, in the case of installation without a back-up, or if the
HRC
70
Pilot or HRC
70
Heat Pump is being switched off during the
winter months (ex. accidental stop, secondary residence, etc...), an
additional anti-freeze protection is necessary.
Apply glycol to the heating circuit (with a minimum concentration
of 25% glycol) or make sure to have hydraulic circuit draining
measures in place for the HRC
70
Heat Pump and its accessories
(described below).
A4.1 - Preparation of the hydraulic circuit (rinsing)
A4.2 - Filling water
A4.3 - Treatment of the heating circuit
A4 - Treatment of the water in the
heating circuit
Before installing the HRC
70
Pilot and the HRC
70
Heat Pump, it is
necessary to rinse the installation with an appropriate product.
This permits the elimination of all traces left from soldering,
soldering fluxes, grout, grease, sludge, metallic particles, etc..in
radiators, underfloor heating, etc...
This prevents any of the abovementioned waste from getting into
the HRC
70
Heat Pump heat exchanger, or from obstructing the
filter installed on the incoming water inlet.
The materials used for producing a heating circuit are of different
natures. Instances of corrosion may occur through galvanic coupling
in both new and existing installations.
The filling of the heating circuit must be done only with untreated water
(no water softener) from the drinking water network.
Filling with
water from any other source (well water, rain water etc...)
will render the warranty null and void.
Central heating installations must be
cleaned in order to eliminate debris (copper,
filings, 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 underfloor heating).
We recommend the use of products in the SENTINEL range 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, fibres, soldering
fluxes) Example : SENTINEL X300 or SENTINEL X800.
- 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 or SENTINEL R600.
• For existing installations:
- Desludge the installation with a desludging product to
eliminate any sludge from the installation. Example :
SENTINEL X400 ou SENTINEL X800.
- 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 or SENTINEL R600.
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 offers efficient resistance to corrosion.
To find this information refer to their user manual.
In cases where the HRC
70
Heat Pump cannot operate (exterior
temperature is outside of the operating range), and a back-up is
authorised (boiler or electrical), it will automatically be protected
from frost or ice as the circulator pump will operate and draw heat
from the heating circuit which has its temperature maintained by
the HRC
70
Pilot’s electrical back-up or back-up boiler.
However, in the case of installation without a back-up, or if the
HRC
70
Pilot or HRC
70
Heat Pump is being switched off during the
winter months (ex. accidental stop, secondary residence, etc...), an
additional anti-freeze protection is necessary to prevent having to
drain the hydraulic circuit of the Heat Pump located outside of the
building.
For anti-freeze product, use «monopropylene glycol» with an
added corrosion inhibitor.
A4.4 - Protection from freezing
PRODUCTS USED FOR THE
TREATMENT OF HEATING WATER
MUST BE APPROVED BY THE LOCAL
OR NATIONAL PUBLIC HYGIENE AND
HEALTH AUTHORITY.
