Closed Expansion Tank System; Automatic Thermal Discharge Valve Dsa; System Connection And Filling - La Nordica TERMOROSA READY DSA Manual Del Usuario

• The unused flue gas exhaust stub pipe must be covered with its respective cap (see chapter DIMENSIONS).
• The installation must be appropriate and has to allow the cleaning and maintenance of the product and the flue.
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;
• The system must be kept constantly full of water even during the periods when the use of the thermo-heating stove is not requested.
• During the winter, inactivity must be faced with the addition of antifreeze.
The TERMOROSA READY DsA and TERMOROSA xxl READY DsA thermo appliances, can be installed in a CLOSED expansion Tank system.
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 modified 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.

CLOsED EXPANsION TANk sysTEM

The TERMOROSA READY DsA and TERMOROSA xxl READY DsA thermo appliance is equipped with:
1. A sAFETy VALVE: maximum operation pressure allowed for the system is : see DECLARATION OF PERFORMANCE - CE MARKING
INFORMATION. Higher pressures can cause deformation and breakage of the boiler body. ATTENTION: The inside diameter of the supply
pipe which connects the thermoproduct with the security valve 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.
2. AUTOMATIC THERMAL DIsCHARgE VALVE DsA or TEMPERATURE sAFETy RELIEF VALVE, with double safety sensor
3. CLOsED EXPANsION Tank can be installed on the thermo product return pipe. ATTENTION: The inside diameter of the return pipe which
connects the thermoproduct with the closed expansion vessel must be equal to the internal diameter of the return junction present in the
thermoproduct. The above mentioned connection pipe must be without siphoning parts.
4. PUMP CONTROL THERMOsTAT
5. NOIsE ALARM ACTIVATION THERMOsTAT
6. NOIsE ALARM
7. TEMPERATURE INDICATOR
8. PREssURE INDICATOR
9. PUMP sysTEM
IT Is MANDATORy that the thermo products for domestic heating inserted in CLOsED Tank heating systems, must be internally equipped,
with a cooling circuit, prepared by the unit manufacturer, which is activated by a thermal safety valve (see chapter VAST) which does not
require auxiliary power and can guarantee that the standard set temperature limit is not exceeded. Connection between the power supply
unit and the valve must be free from interceptions. Cooling circuit upstream pressure must be at least 1,5 bar.

AUTOMATIC THERMAL DIsCHARgE VALVE DsA

Solid fuel thermo products must be installed with safety devices determined by laws in vigour. For this purpose the product is already equipped
with a heat discharge coil inside the exchanger, as well with an automatic thermal discharge valve DsA. The valve works thanks to the water
coming from the same intake of the system: for this reason the filling of the system must remain open all the time with no interference of
any other device in between. You can find the connections at the system 1, Chap. DIMENSIONS position A. When the safety temperature is
reached, the automatic thermal discharge valve DSA, the bulb of which is to be connected to attachment B, enables the intake of cold water
in the boiler coil, discharging the excess heat out of pipe C towards a conveniently installed drain. Cooling circuit upstream pressure must be
at least 1,5 bar - MAX 10 bar.

sysTEM CONNECTION AND FILLINg

Some examples, purely indicative of the installation, are reported at chapter INSTALLATION LAY-OUT, while the connections to the
thermoproduct are reported at chapter DIMENSIONS .
ATTENTION: The filling of the TERMOROSA READY DSA system has to be filled only by means of the tap (pos. 3). When the
manometer (M) shows a pressure of 1-1,2 bar, close the tap.
The installation must always be full of water even when the thermo-product is not used. During winter season the non use
has to be faced by adding antifreeze substances.
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