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DSA
TERMOROSA
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 vessel tank in a way to prevent an excessive
pressure of the water network deforming the body of the thermo product.
The system must be kept constantly full of water even during the periods when the use of the thermoheating stove is
not requested. During the winter, inactivity must be faced with the addition of antifreeze.
3.2. CLOSED expansion VESSEL system
It is COMPULSORY that the CLOSED expansion VESSEL system is provided with:
1.
A 3 bar SAFETY VALVE:
water column). Higher pressures can cause deformation and breakage of the boiler body
2.
AUTOMATIC THERMOSTATIC MIXING VALVE – (see chapter 3.3)
3.
HEAT DISCHARGE VALVE or HEAT SAFETY DISCHARGE (positive safety, therefore, this continues
discharge, should the valve be damaged)
4.
CLOSED EXPANSION VESSEL
5.
PUMP CONTROL THERMOSTAT
6.
NOISE ALARM ACTIVATION THERMOSTAT
7.
NOISE ALARM
8.
TEMPERATURE INDICATOR
9.
PRESSURE INDICATOR
10. PUMP SYSTEM
IMPORTANT: 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.
IT IS MANDATORY that the thermo products for domestic heating inserted in CLOSED VESSEL heating systems,
must be internally equipped, with a cooling circuit, prepared by the unit manufacturer, which is activated by a thermal
safety valve (see chapter 3.4) which does not require auxiliary power and can guarantee that the standard set
temperature limit is not exceeded. Connection between the power supply unit and the valve must be free from
interceptions. Cooling circuit upstream pressure must be at least 1,5 bar.
3.3. AUTOMATIC THERMOSTATIC MIXER VALVE (OPTIONAL) - Picture 2
The automatic thermostatic mixer 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).
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.
7097501 – EN
maximum operation pressure allowed for the system is 3 bar (equal to 30m of the
CB
TERMOPRODOTTO
3
55°
1
M
R
2
Picture 2
23
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