Wood burning stove/cooker
– TERMOROSA DSA
Installation, user and maintenance instructions – EN – Rev.02
23
Installation must be carried out by authorised personnel who must provide the buyer with a system declaration of
conformity and will assume full responsibility for final installation and as a consequence the correct functioning of the
installed product.
NORDICA S.p.A. cannot be held responsible for lack of respect for such precautions.
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) In case of water leaking, close the water supply and promptly warn the after sales technical service;
b) The system working pressure must periodically be checked.
c) 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:
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close the water taps of both the thermal system and the domestic hot water system;
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empty the thermal system and the domestic hot water system if there is risk of freezing.
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 local chimneysweep must be informed of the installation of the thermocooker, so that he can check its correct
connection to the flue and the level of efficiency of the flue itself.
NO MODIFICATIONS CAN BE CARRIED OUT TO THE APPLIANCE.
Before installation, check whether your floor can support the weight of the Thermocooker.
WARNING: ensure the device is placed perfectly level and that the diameter of the smoke exhaust pipe is that
required.
Connection of more that one cooker to the same chimney is not allowed.
It is advisable to have your local chimneysweep check both the connection to the chimney and the sufficient flow of air
for combustion in the place of installation.
The diameter of the opening for connection to the chimney must at least correspond to the diameter of the flue gas
pipe. The opening must be equipped with a wall connection for the insertion of the exhaust pipe and a rosette.
The unused flue gas exhaust stub pipe must be covered with its respective cap.
The DSA thermo cooker models, can be installed in both an OPEN expansion VESSEL system (see chapter 3.1) and
a CLOSED expansion VESSEL system (see chapter 3.2).
3.1. OPEN expansion VESSEL system
It is COMPULSORY that the OPEN expansion VESSEL system is provided with:
1. OPEN EXPANSION VESSEL: with a capacity of 10% of the total water content of the thermocooker and the
system. This must be positioned at the highest point of the system, at least 2m above the radiator placed at the
highest level.
2. SAFETY PIPE: that connects by means of the shortest path without descending routes or siphoning the flow of
the thermo cooker with the top part of the tank described in point 1. The safety pipe must have the minimum gas
section of 1”.
3. LOAD PIPE: that connects the bottom of the tank of point1 with the system's return pipe.
It must have a minimum gas section of ¾’’.
All these elements must not, for any reason, have intercepting objects inserted, as these could accidentally
exclude them, and they must be placed in an area not subject to freezing, seeing that, if they should freeze, the
boiler frame could break or even explode.
In case of exposure to ice, it is opportune to add a sufficient quantity of anti-freeze to the water in the system,
enough to completely eliminate the problem.
In no way should water circulate in the small tank in-between the safety pipe and load pipe, seeing as this
oxidises of the water and consequently this quickly corrodes the thermo cooker and system body.
4. HEAT DISCHARGE VALVE: permits an extra positive safety, capable of preventing boiling, even if there is no
electric power.
It consists of a valve, similar to a pressure safety valve, but differs, seeing that it opens once the pre-calibrated
temperature (normally 94-95°C) is reached. It disch arges hot water from the system flow pipe, and the water is
replaced with the same quantity of cold water, supplied from the tank vessel load pipe, this way reducing the
excessive heat.
5. SAFETY VALVE FROM 1,5bar: maximum operation pressure allowed for the system is 1,5 bar (equal to 15m of
the water column). Higher pressures can cause deformation and breakage of the boiler body.