Vma - Anti-Condensation Mixing Valve - It Is Mandatory (Purchased As Optional); System Connection And Filling - LA NORDICA TERMOCAMINO-650 Manuel Utilisateur

8. ANTI-CONDENsATION MIXINg VALVE – (see chapter)
ATTENTION: temperature safety sensors must be in place on the machine or at a distance no greater than 30 cm from the flow
connection of the thermo-product. Whenever the thermo products lack a device, those missing can be installed on the thermo
product flow pipe, within a distance no greater than 1m from the thermo product. all those parts must no have for any reason
meditate intercept bodies that could accidentally exclude them and must be placed in rooms which are protected from frost. on
the contrary, if they freeze, the boiler body could break or even explode.
ATTENTION: For no reason must the fire be ignited before the system has been completely filled with water; doing this
would lead to serious damage of the entire structure. The system must be filled by means of the loading pipe directly from the
open tank in a way to prevent an excessive pressure of the water network deforming the body of the thermo heating stove.
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.

VMA - ANTI-CONDENsATION MIXINg VALVE - IT Is MANDATORY (pURCHased as opTionaL)

The anti-condensation mixing valve finds applications in solid fuel heat generators as it prevents cold water return in the exchanger. Routes
1 and 3 are always open and, along with the pump installed on the return (R), they guarantee water circulation inside the biomass boiler
exchanger (CB- chapter insTaLLaTion Lay-oUT). an elevated return temperature, allows efficiency improvement, reduces formation of
smoke condensation and prolongs the boiler life span.
Valves on the market have different calibrations. 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.

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 diMensioni.
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-product is not used. During winter season the non use
has to be faced by adding antifreeze substances.
ENgLIsH 23