- 30
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ENGLISH
Closed expansion tank
“absorbs” the variations in the volume of water contained insi-
de the boiler-stove due to the heating effect.
Aheating technician must evaluate the need to add a second
tank to the existing one, depending on total amount of wa-
ter in the system.
Gear motor
This activates the screw allowing the transport of the pellets
from the hopper to the chamber.
Manometer
Positioned on the back of the thermo stove (B -fi g. 1), it allows
water pressure to be read. When the thermo stove is running,
the recommended pressure is 1,5 bar.
Venting valve
Positioned in the upper part under the front-top grill (see page
29 fi g. 2), it allows for any air present during the loading of the
water into the stove to be bled off.
Water pressure switch
Situated on the hydraulic circuit, it cuts in to block the boiler
when the system pressure is low.
Check there are no leaks and re-establish the correct system
pressure by adding water from the dedicated circuit
Smoke thermocouple
on the smoke outlet. It reads the smoke temperature. It regula-
tes the ignition stage and shuts the boiler-fi replace down if the
temperature is too high or too low.
Flow sensor
located in the extraction duct, is activated and shuts down the
thermo stove when the fl ow of combustion air is incorrect,
which means a resulting risk of low pressure problems in the
smoke circuit.
Water temperature detector
It reads the water temperature in the boiler and sends the circuit
board information for pump management and boiler power
modulation.
If the temperature is too high, it starts a shutdown.
Water overheating safety thermostat
detects the water temperature in the thermo-stoves. If this is
too high, it triggers the shutdown process by disconnecting the
electrical supply to the gear motor. If the thermostat has trigge-
red a reaction, it must be reset by means of the red emergency
button at the back of the stove (A - fi g. 1).
Electric coil
It sets off of the combustion of the pellets and it remains lit until
the fl ame has been ignited. This component is subject to wear.
Pressure switch
Positioned in the fume-aspiration area, it is triggered in the case
of a depression in the fumes circuit (e.g. obstructed fl ue) and
interrupts the movement of the pellets. It blocks pellet loading
causing the stove to go out.
Feed Screw safety thermostat
Located on the system that loads the pellets from the hopper.
Trips when the temperature inside the boiler-stove is too high.
It stops pellet loading, causing the boiler-stove to go out.
FEATURES
• COMPONENTS - SAFETY AND DETECTION DEVICES
N.B.:
IF THE BOILER-STOVE BLOCKS, THE REASON WILL APPEAR ON THE DISPLAY AND THIS WILL BE SAVED.
B
A
fi g. 1
Summary of Contents for NELLY PIU
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