HR EVO 200-250 SMART
use and maintenance manual
Pag.57
Rev.0 03/07/2019
ENG
Heating chamber thermostat activation temperature:> 95°C
Safety against flare-back in the pellet chute
The solutions preventing flare-back are:
negative pressure in the combustion chamber see par. 3.2.
the siphon shape of the pellet chute.
the hopper temperature safety see par. 3.4.
Overcurrent protection device
The unit is protected against overcurrent by 2A fuses on the power
supply of the eletronic card.
Water circuit overpressure safety
Any overpressure of the water inside the chamber, by P>3 bar, is
discharged through activation of the safety valve installed in the
hydraulic system inside the boiler.
Do not tamper with the safety devices.
Fume extractor fan failure
If the fume extractor fan stops for any reason, the electronic
controller instantly stops the pellet supply, displaying the message
‘AL4 FAN FAIL’.
Opening safety device for fire-door ash-door
The safety Microswitch operates when it detects fire or ash door
door opening, during normal boiler operation, the electronic control
instantly locks the supply of pellets showing the message “ AL M
DOOR OPEN ”.
Intended use
The pellet boiler has the advantage of combining the heat generated
by the combustion of wood with the convenience of automatic
water temperature management and the possibility of weekly
programming of switching on/off, as well as the connection of a
thermostat and/or chronothermostat and start-stop remote control.
DESCRIPTION OF THE BOILER
The boiler is designed and built to work safely if:
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