LA NORDICA Focolare 80 Idro Crystal DSA Instructions For Installation, Use And Maintenance Manual
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Focolare 80 Idro Crystal - DSA20 6097811 Rev.06 – ENb) 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 iscontacted 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.La NORDICA S.p.A. declines any responsibility for damages to things and/or people caused by theinstallation. Furthermore it is not responsible of any modified product without authorisation as well as for theuse of non-original spare parts.Your regular local chimney sweep must be informed about the installation of the appliance so that he can check thecorrect connection to the chimney.Before installing the appliance, carry out the following checks:• Make sure that the floor can support the weight of the appliance, and if it is made of flammable material, providesuitable insulation.• Make sure that there is adequate ventilation (by means of an air intake, see chapter 7) in the room where theappliance is to be installed.• Do not install the appliance in rooms containing collective ventilation ducts, hoods with or without extractor, type Bgas appliances, heat pumps, or other appliances that, operating at the same time, can put the room in depression(ref. UNI 10683/98 standard)• Make sure that the flue and the pipes to which the appliance will be connected are suitable for its operation.• Always leave of air gap on sides and rear between the thermo-fireplace and the walls. (see Picture 13)• Using the adjustable feet and a level, make sure that the appliance is perfectly level to ensure the correctmovement of the door.We recommend having your local chimney sweep check both the chimney connection and that there is sufficient airflow for combustion in the place of installation.IMPORTANT: Only after a few days of operation (the time necessary for determining that the appliance isoperating correctly), you can begin to assemble the aesthetic facing. We recommend providing an inspectiondoor on the counter plate or elsewhere as suitable to provide easy accessibility and visibility of the safety devices(pressure gauges, valves,..)The DSA appliance models, can be installed in both an OPEN expansion VESSEL system (see chapter 3.1) and aCLOSED expansion VESSEL system (see chapter 3.2).3.1. OPEN expansion VESSEL systemIt is COMPULSORY that the OPEN expansion VESSEL system is provided with:1. OPEN EXPANSION TANK which has a capacity of 10% of total water content of thermo-fireplace and of theinstallation. This is installed at the highest point of the system, at least 2 m over the radiator that is at the highestlevel.2. SAFETY PIPE that connects through the shortest way, without descending or siphoning parts, the delivery ofthermo-fireplace to the upper side of open expansion tank. The minimum diameter of safety pipe is 1” gas.3. LOADING PIPE which connects the bottom of open expansion tank with the return pipe of installation. Theminimum diameter must be ¾” gas. All those parts must no have for any reason meditate intercept bodies thatcould accidentally exclude them and must be placed in rooms which are protected from frost. On the contrary, ifthey freeze, the boiler body could break or even explode. In case of frost placing it will be right to add a properpercentage of antifreeze liquid to the water of installation in order to delete the whole problem. In no way theremust be water circulation in the open expansion tank between the safety and loading pipe. This would cause thewater oxygenation and the consequent corrosion of thermo-fireplace and installation in a very short time.4. THERMAL DISCHARGE VALVE which is a further positive safety that prevents the boiling even when electricenergy is missing. It is made by a valve cover like a pressure safety valve which differs from it as it opens byreaching a pre-calibrated temperature (normally at 94 – 95°C) and unload hot water from the installati on delivery.This will be replaced with as much cold water coming from the open expansion tank loading pipe of open tank bydraining away the excessive heat.5. 1,5 bar SAFETY VALVE. The exercise maximum pressure which is admitted for the installation is 1,5bar (itcorresponds to 15m water column. Over pressures can cause deformations and breakings of the boiler body.6. SAFETY DEVICES according to the relevant rule in force.7. CIRCULATION PUMP. It would be better to install it on the return in order to avoid that it could disconnect itselfat very high water temperatures but checking that it does not drive water in the open expansion tank otherwise itshould cause a continuous water oxygenation with consequent, fast corrosion of boiler body. It must be not to |
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