Vast - Automatic Thermal Discharge Valve Dsa - (Purchased As Optional); System Connection And Filling; Fire-Fighting Safety Measures; First-Aid Measures - La Nordica WF25 DsA Manual Del Usuario

Valves on the market have different calibrations. La NORDICA advises use of model 55°c with 1" hydraulic connections. Once the
valve calibration temperature is reached, route 2 opens and the boiler water goes to the system via the flow (M).
IMPORTANT lack of installation of the device voids the heat exchanger warranty.

VAST - AUTOMATIC THERMAL DISCHARGE VALVE DSA - (purchased as OPTIONAL)

Solid fuel thermo products must be installed with safety devices determined by laws in vigour.
For this reason the thermo products is equipped with a heat discharge coil.
The heat discharge coil must have one side connected to the water network (chapter INSTALLATION LAY-OUT - chap. DIMENSION
SHEET- A ) and the other rot drainage network (C). 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.
WARNING: We cannot be made liable for a wrong operation of the plant, when it does not comply with the provisions
of these instructions or when it uses additional products not suitable for this device (see chapter Thermostatic Valve
VAST TECHNICAL DATA SHEET).

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 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-product is not used. During winter season the
non use has to be faced by adding antifreeze substances.

FIRE-FIGHTING SAFETY MEASURES

When installing the appliance, the following safety measures must be observed:
a) In order to ensure sufficient thermal insulation, respect the minimum safety distance from objects or furnishing components
flammable and sensitive to heat and from materials with flammable structure (see CE MARKING INFORMATION -
All the minimum safety distances are shown on the product data plate and lower values must not be used.
b) in front of the furnace door, in the radiation area, there must be no flammable or heat-sensitive objects or material at a distance
of less than 100 cm. This distance can be reduced to 40 cm where a rear-ventilated, heat-resistant protection device is
installed in front of the whole component to protect;
If the product is installed on a no totally refractory floor, one must foresee a fireproof background. The floors made of
c)
inflammable material, such as moquette, parquet or cork etc., must be covered by a layer of no-inflammable material (size
according to regional law, see
The ash drawer must always be inserted when the appliance is in operation.
The solid combustion residues (ashes) must be collected in a metal container that is hermetically sealed and fire resistant. The
appliance must never be lit in the presence of gaseous emissions or vapours (for example: glue for linoleum, petrol, etc,). Do not
place flammable materials in the vicinity of the appliance.
During the combustion, thermal air is emitted by involving the heating of areas, door and glass hearth, of the door handles
or controls, of the smokes pipe and, in case, of the front part of appliance. Avoid to touch those parts without a protective
clothing or without accessory tools (gloves resistant to heat, control devices). Ensure children are aware of these
dangers and keep them away from the furnace when it is on.Warn children that the device becomes very hot and
that it must not be touched.
When using the wrong fuel or one which is too damp, due to deposits present in the flue, a flue fire is possible.

FIRST-AID MEASURES

Should any fire arise in the stack or in the flue:
a) Close the feeding door.
b) Close the registers of combustion air
Picture 1).
ENgLIsH
Picture 7).
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