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La Nordica Termocamino WF25 DSA Manual

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ENGLISH
Before installing the appliance, carry out the following checks:
• Verify if your structure can support the weight of the appliance. In case of insufcient carrying capacity it is necessary to
adopt appropriate measures, La NORDICA responsibility is limited to the supply of the appliance (See chapter TECHNICAL
DESCRIPTION).
• Make sure that the oor can support the weight of the appliance, and if it is made of ammable material, provide suitable insulation
(DIMENSIONS ACCORDING TO REGIONAL REGULATIONS).
• Make sure that there is adequate ventilation in the room where the appliance is to be installed, with particular attention to windows
and doors with tight closing (seal ropes).
• Do not install the appliance in rooms containing collective ventilation ducts, hoods with or without extractor, type B gas appliances,
heat pumps, or other appliances that, operating at the same time, can put the room in depression (ref. UNI 10683 standard)
• Make sure that the ue and the pipes to which the appliance will be connected are suitable for its operation.
• The diameter of the opening for connection to the chimney must at least correspond to the diameter of the ue gas pipe. The opening
must be equipped with a wall connection for the insertion of the exhaust pipe and a rosette.
• Always leave the recommended air pocket between the appliance and the walls, rear and side min. see Chap. FIRE-FIGHTING SAFETY
MEASURES.
• Establish the type of ventilation (natural or forced) see chapter VENTILATION HOOD OR ADJACENT LOCAL.
• By means of the adjustable feet and using a level make sure that the device is perfectly levelled to allow a correct sliding of the door.
Before installation, accurately wash the pipes of the system in order to remove any residuals that could compromise the correct functioning
of the appliance.
IMPORTANT:
a) It would be appropriate to install an automatic or manual air valve to allow the air outlet from the plumbing system;
b) In case of water leaking, close the water supply and promptly warn the after sales technical service;
c) The system working pressure must periodically be checked.
d) If not using the boiler for a long period of time, it is recommended that the after sales technical service is contacted to carry out at
least the following operations:
• close the water taps of both the thermal system and the domestic hot water system;
• empty the thermal system and the domestic hot water system if there is risk of freezing.
• The unused ue gas exhaust stub pipe must be covered with its respective cap (see chapter 18 Pos.4).
The DSA thermo appliances, can be installed in both an OPEN expansion Tank system and a CLOSED expansion Tank system.
After testing the proper working of the appliance, some days from the installation, it is possible to proceed with the construction of
its aesthetic covering.
WARNING: During the surround building operations it must kept in mind possible and subsequent electrical installed parts
maintenance (Fans, temperature probe, etc) and with hydraulic systems all parts connected to the product.
La NORDICA S.p.A. declines all responsibility for damage to things and/or persons caused by the system. In addition, it is
not responsible for any product modied without authorisation and even less for the use of non original spare parts.
Your regular local chimney sweep must be informed about the installation of the appliance so that he can check the correct connection to
the chimney.
OPEN EXPANSION TANK SYSTEM
It is COMPULSORY that the OPEN expansion Tank system is provided with:
1. OPEN EXPANSION Tank: which has a capacity of 10% of total water content of thermo-product and of the installation. This is installed
at the highest point of the system, at least 2 m over the radiator that is at the highest level.
2. SAFETY PIPE : that connects through the shortest way, without descending or siphoning parts, the delivery of thermoproduct to the
upper side of open expansion tank. ATTENTION: The inside diameter of the supply pipe which connects the thermoproduct with
the open expansion vessel must be equal to the internal diameter of the supply junction present in the thermoproduct. The above
mentioned connection pipe must be without siphoning parts.
3. LOAD PIPE : which connects the bottom of open expansion tank with the return pipe of installation. The minimum diameter must be
¾” gas. All those parts must no have for any reason meditate intercept bodies that could accidentally exclude them and must be placed
in rooms which are protected from frost. On the contrary, if they freeze, the boiler body could break or even explode. In case of frost
placing it will be right to add a proper percentage of antifreeze liquid to the water of installation in order to delete the whole problem.
In no way there must be water circulation in the open expansion tank between the safety and loading pipe. This would cause the water
oxygenation and the consequent corrosion of thermo-product and installation in a very short time.
4. AUTOMATIC THERMAL DISCHARGE VALVE DSA which is a further positive safety that prevents the boiling even when electric energy
is missing. It is made by a valve cover like a pressure safety valve which diers from it as it opens by reaching a pre-calibrated temperature
(normally at 94 – 95°C) and unload hot water from the installation delivery. This will be replaced with as much cold water coming from
the open expansion tank loading pipe of open tank by draining away the excessive heat.
5. SAFETY VALVE FROM 1,5 bar: maximum operation pressure allowed for the system is 1,5 bar (equal to 15 m of the water column).
Higher pressures can cause deformation and breakage of the boiler body.
6. SAFETY DEVICES envisioned by Regulations in vigour.
7. CIRCULATION PUMP : . It would be better to install it on the return in order to avoid that it could disconnect itself at very high water
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