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Termocamino 650 – 800
4.
THERMAL DISCHARGE VALVE 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 differs from it as it opens by
reaching 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 by
draining away the excessive heat.
5.
1,5 bar SAFETY VALVE. The exercise maximum pressure which is admitted for the installation is 1,5bar (it
corresponds 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 itself
at very high water temperatures but checking that it does not drive water in the open expansion tank otherwise it
should cause a continuous water oxygenation with consequent, fast corrosion of boiler body. It must be not to
avoid a forced circulation in the open expansion tank. Furthermore it must be electrically connected to a
thermostat or a electronic control unit that can be purchased with the thermo-fireplace as OPTIONAL part.
8.
AUTOMATIC THERMOSTATIC VALVE - (OPTIONAL)- Picture 4
The automatic thermostatic mixing valve is used in the solid fuel thermoproducts as it prevents that cold water
returns into the exchanger.
The ways 1 and 3 are always open and
together with the pump installed on return ( R)
they guarantee water circulation
exchanger of biomass boiler ( CB ).
A high return temperature allows to improve
efficiency, reduce smokes condensation and
lengthen the boiler life.
The valves in the market show different
calibrations. La NORDICA suggest to use the
55° C model with 1" hydraulic connections.
Once the valve calibration temperature is
reached, the way 2 opens and the boiler water
goes through the delivery ( M ) to the installation).
IMPORTANT: if the device is not installed there will be not any guarantee on heating exchanger.
IMPORTANT: the temperature safety probes mut be inside the machine or at 30 cm max from the thermoproduct
delivery connection.
Should the generators not provided with all devices , the missing ones can be installed on the thermoproduct within a
distance of not more than 1 m from it.
ATTENTION: for no reason the fire shall be lightened before the installation is completely full of water
otherwise there will be a serious damage to the whole structure.
We recommend providing an inspection door on the counterplate or elsewhere as suitable to provide easy
accessibility and visibility of the safety devices (pressure gauges, valves) .
3.1.
SYSTEM CONNECTION AND FILLING
On the right and left-hand sides of the thermo-fireplace there are couplings for the hot water in output delivery (upper
part) while on the lower part there are those in return.
WE RECOMMEND USING AN "INTERSECTING FLOW" INSTALLATION (DELIVERY ON THE RIGHT WITH
RETURN ON THE LEFT, OR DELIVERY ON THE LEFT WITH RETURN ON THE RIGHT).
ATTENTION: The filling of the system must take place exclusively by the natural fall of the water from the open
expansion tank through the feed pipe in order to avoid that a too high water system grid pressure could
change or cause the explosion of boiler body.
During this phase, open all the bleed valves of the radiators to prevent the formation of air sacks, checking the outlet
of water to avoid unpleasant floodings.
The watertight test of the installation is performed with the pressure of expansion tank open.
The installation must always be full of water even when the thermo-fireplace is not used. During winter
season the non use has to be faced by adding antifreeze substances.
4.
FIRE PREVENTION
When installing the appliance, the following safety measures must be respected:
a) In front of the thermo-fireplace, there must not be any object or construction material that is flammable or heat
sensitive situated less than 80 cm from the appliance;
b) If the appliance is installed on a floor that is not completely refractory, a fireproof base, for example a steel
platform, must be provided (dimensions according to regional regulations. (see Picture 5)
The ash drawer must always be inserted when the thermo-fireplace is in operation.
6098000 – EN
CB
inside the
TERMOPRODOTTO
3
55°
1
Picture 4
M
R
2
21
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