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La Nordica TERMONICOLETTA FORNO DSA 4.0 Manual

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ENGLISH
SIPHONING PARTS.
5. PUMP CONTROL THERMOSTAT
6. NOISE ALARM ACTIVATION THERMOSTAT
7. NOISE ALARM
8. TEMPERATURE INDICATOR
9. PRESSURE INDICATOR
10. PUMP SYSTEM
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.
IT IS MANDATORY THAT THE THERMO PRODUCTS FOR DOMESTIC HEATING INSERTED IN CLOSED TANK 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 VASTWHICH 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.
ANTICONDENSATION MIXING VALVE OBLIGATORY PURCHASED AS OPTIONAL PART
The Anti-condensation mixing valve nds applications in solid fuel heat generators as it prevents cold water return in the exchanger (chap.
DIMENSIONS). 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 eciency improvement, reduces formation of smoke condensation
and prolongs the boiler life span.
Valves on the market have dierent 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 ow (M).
IMPORTANT lAck Of INsTAllATION Of The devIce vOIds The heAT exchANgeR wARRANTy.
VAST  AUTOMATIC THERMAL DISCHARGE VALVE DSA PURCHASED AS OPTIONAL PART
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 (chap. DIMENSIONS / chap. DIMENSIONS - 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 VAST THERMOSTATIC VALVE 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 oodings.
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.
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