eta PelletsCompact33-50 kW, Operation

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Safety devices Safety
is reached, the power supply to the draught fan and the
fuel intake is interrupted. If the boiler temperature
decreases below 70°C again, the safety temperature
limiter can be manually released for a restart of the
boiler.
Safety valve against overpressure
A safety valve with 3 bar opening pressure has already
been installed on the boiler at the factory. If solar or
other heat sources provide energy to the buffer
storage tank via a heat exchanger, a safety valve
(3 bar maximum) is also required on the buffer storage
tank.
Fig. 3-3: Safety valve
Normally an expansion tank that is too small or
defective, or blocked heating lines, are the cause for
activation of the safety valve. The safety valve should
be
installed at the highest point of the heat producer or i
n the flow pipe close to the heat producer.
DANGER!
Safety valve outlet
The safety valve outlet must be directed to the ground
in a pipe so nobody is endangered by hot water or
steam.

The safety valve outlet must be directed to the
sewer via a clearly visible, open route (siphon
funnel), so that malfunctions, especially a failure of
the safety valve to close, can be detected. If no
sewer connection is available, the outlet must be
directed to the ground in a pipe.