3 Warranty, guarantee, liability
Overtemperature reset (OTR)
–
The overtemperature reset is a safety device that
prevents overheating of the boiler.
–
Functioning: The overtemperature reset stops the
heating process at a boiler temperature ~95°C
(exclusively electrical function; fuel and air supply
are interrupted).
–
After tripping, the overtemperature reset must be
manually released again by unscrewing the black
sealing cap
1
and pressing the button as soon as
the boiler temperature falls below 60°C.
–
If the overtemperature reset trips, this is indicated
on the boiler control display.
Abb. 2-3: Position of the overtemperature reset
Thermal overload protection
i
Thermal overload protection is only required
for the
pellet
elegance
24.
–
The thermal overload protection prevents an
uncontrolled increase in temperature and pres-
sure inside the boiler.
–
Functioning: At a boiler temperature > 95°C, the
valve opens and directs cold water through the
safety heat exchanger (which is placed in the
water jacket of the boiler). This lowers the boiler
temperature.
Abb. 2-4: Schematic diagram
Safety valve (to protect against excess pres-
sure in the system)
–
The safety valve
1
is a safety device for protecting
against overpressure in the water circuit of the
heating system.
–
Functioning: The valve opens when the system
pressure exceeds 3 bar. Water/steam are dischar-
ged into an open drain via a blow-off line, which
avoids consequential damage to the heating sys-
tem. The safety valve is closed during normal ope-
ration.
–
For normative specification see EN 12828.
Abb. 2-5
Operation manual
pelletelegance
7
