Herz pelletstar ECO 10, Руководство по эксплуатации

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4
Mode
of operation
10
4.5 Boiler operation
The boiler starts up automatically with its built-in
automatic ignition, when heat is required.
The heat requirement can be controlled by the
weather or by a remote sensor (optional),
depending on any heating circuit. A room
thermometer can also be used to generate a
requirement. The boiler can also be started up by
the requirement of a hot water tank.
The boiler output can be controlled by set up
values and adjusted to local conditions.
The boiler control prevents too low boiler
temperatures to avoid effect on the durability of
the system. Too high boiler temperatures are not
permissible.
Expansion cracks at insulating plates, respectively
burning chamber stones, don´t affect their
capacities and don´t represent warranty claim.
4.6 Safety devices
The safety devices must be dimensioned and
installed according to ÖNORM B 8133.
The safety valve in the boiler circulation serves as
a final safety device against malfunctions of the
equipment.
All legal safety regulations must be adhered to on-
site via the authorised specialist company.
Earthing or potential equalisation must be carried
out on the whole heating system according to EN
60204-1 by an authorised specialist company.
4.6.1 Indicates the state of the safety
temperature limiter (STL):
If the boiler temperature exceeds 95 °C, the
equipment must be switched off for safety
reasons. The safety temperature limiter (STL) will
lock in this case.
Possible causes may be:

Performance decrease in the boiler was
interrupted abruptly. This can occur due to
the switching off a pump or sudden shutting
of the heating circuit mixer.

The load pumps are being controlled by the
HERZ
Control. The so-called excess
temperature flue gas would be automatically
activated by the HERZ Control. This avoids
higher boiler temperatures.

The boiler is too large.

The fuel level is set too high.

Loss of power supply

Etc.
At First the cause of the failure must be found and
be corrected, afterwards the safety temperature
limiter can be unlocked.
The boiler temperature must be lower than 75
°C before unlocking.
Only then the problem can be acknowledged. For
this purpose, the cover of the STL is screwed off.
The STL can be unlocked by a light pressure with
a sharp object. After unscrewing the cover the
fault acknowledgement must be performed at the
switch box. The location of the STL is on the right
side next of the display.
4.7 Commissioning
The commissioning must be carried out by HERZ
factory customer service or an authorised
specialist.
A pressure measurement is conducted
additionally after boiler has been operated with
the actual fuel for > 1 hour and a flow temperature
of 70-85 °C.
The result of the pressure measurement
represents a characterisation of the draught
during normal operation and shows, if the required
draught has been reached. If a deviation occurs,
the existing chimney has not been dimensioned
correctly or dimensioning underlying installations
have not been carried out correctly (e.g.: faulty
connections, false air inflow, too long connection
pipe,...) and the boiler does not operate properly.
During initial operation and commissioning the
system controls and safety devices must be
checked and the handling of the boiler as well as
the system maintenance schedule must be
explained to the operator.
The hydraulic balancing of the equipment (pipe
installation) must be carried out by an authorised
specialist company (installer). Zusätzlich ist der
Installateur verpflichtet (lt. Draft documentation for
all the equipment (according to ÖNORM EN
12170), which must be kept in the boiler room.
4.8 Operating and impermissible
temperatures
4.8.1 Boiler temperature
The HERZ pelletstar boiler operates at a boiler
temperature between 65 °C up to 90 °C. If the
return flow temperature is lower than 55 °C, flue
gas will condense on the inside of the boiler. So if
the boiler starts up, the operating temperature