SAFETY DEVICES
13
Chapter 4
WATER OVERHEATING SAFETY VIA 100° C BULB
When the temperature of the water inside the product is in proximity of 100°C, pellet feeding is blocked. If the
bulb trips, restoration of the safety device is manual and must be performed by an authorised technician.
The restoration of 100°C safety device is not under warranty unless the after-sales centre can show
the presence of a faulty component.
MINIMUM AND MAXIMUM PRESSURE PRESSURE SWITCH
A minimum and maximum pressure pressure switch is installed in series with the pellet motor electric
energy power supply. If the pressure in the system is below 0.6 bar, the electric energy power supply is
blocked to the pellet feed motor. If the pressure in the system exceeds 2.5 bar, manual rearm of the pressure
switch is triggered: restoration of the safety device is manual and must be performed by an authorised
technician.
Attention: any presence of air in the system could cause the minimum or maximum pressure pressure
switch to also intervene.
If the minimum pressure pressure switch intervenes blocking pellet feed into
the machine, alarms may occur connected to the lack of fuel.
Attention
For regular functioning of the product the ideal system pressure must be calibrated at approx.
1.1 bar with cold system. Moreover, there must be no air in the system.
Extrafl ame recommends suitable air vent circuit in the system. Any air venting operations
from the system or the product is not covered by the warranty.
DEVICES NOT ON THE LIST
During installation of the stove it is MANDATORY to adjust the system with a manometer in order to display
the water pressure.
INSTALLATION AND SAFETY DEVICES
The installation, relative plant connections, commissioning and inspection of correct functioning must
be carried out perfectly, in total compliance with Standards in force, both national and regional, as well as
these instructions.
For Italy, installation must be carried out by professionally authorised staff (Ministerial Decree dated
22.01.2008 n°37).
Extrafl ame S.p.A. declines all responsibility for damages to objects and/or persons caused by the plant.
SAFETY DEVICES FOR CLOSED VESSEL PLANT
According to the UNI 10412-2 (2006) Standard in force in Italy, the closed plants must have:
Safety valve
Pump control thermostat
Acoustic alarm activation thermostat
Temperature indicator
Pressure indicator
Acoustic alarm
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