Primary Circuit Connection (For Products With An Internal Exchanger) - Atlantic Explorer Installations- Und Bedienungsanleitung

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7.4. Primary circuit connection (for products with an internal exchanger)

Protect against overpressure due to expansion of the water when heating with a 3 bar – 0.3 MPa
valve, or an open expansion tank (at atmospheric pressure) or a closed diaphragm expansion tank.
The working pressure of the circuit must not exceed 3 bar – 0.3 MPa and its temperature must not
exceed 85 °C. When connecting to solar sensors, a glycol mixture must be used to protect against
frost and corrosion: "TYFOCOR L" type. In the case of an installation with a stop valve at the inlet
and outlet of the exchanger, never close the two valves at the same time to avoid any risk of the
exchanger bursting.
Preparing the circuit
For any installation (new or renovation), the pipes of the water network must be thoroughly cleaned.
The aim of this pre-set-up cleaning is to eliminate any germs or residue that could lead to the build-up
of deposits. In new installations in particular, residues of grease, rusty metal or copper micro-deposits must
be removed. In the case of installations undergoing renovation, cleaning is intended to remove sludge and
corrosion products formed during the previous period of operation.
There are two types of cleaning/sludge removal: a one-off operation that takes a few hours and a more
gradual approach carried out over several weeks. In the first case, it is imperative to carry out this cleaning
before connecting the new boiler. In the second case, fitting a filter on the boiler return will capture any
loose deposits.
Cleaning the system before it is commissioned helps to improve efficiency, reduce energy consumption and
combat scaling and corrosion. This operation requires the intervention of a professional (water treatment).
If the primary circuit is not to be used, the exchanger inlet and outlet must be plugged (1''M plugs
not supplied with the appliance).
Water quality
The characteristics of the primary circuit water used from commissioning and for the life of the boilers shall
comply with the following values:
• When filling a new installation, or when it has been completely drained, the filling water must comply with
the following characteristics: TH < 10°f.
• A large inflow of raw water would lead to large scale deposits, which could cause overheating and
consequent breakages. Make-up water must be carefully monitored. A water meter is mandatory: the total
volume of all the water introduced into the installation (filling + make-up) must not exceed three times the
water capacity of the heating system. In addition, the make-up water must comply with the following
parameter: TH < 1°f.
If these instructions are not followed (the sum of the filling water and make-up water is more than three
times the water capacity of the heating system), a complete cleaning (sludge removal and descaling)
operation is required.
Installation Use Maintenance Warranty