III
HARGASSNER Heating technology for
Biomass
A 4952 Weng OÖ Tel.: +43/7723/5274-0 Fax: +43/7723/5274-5 [email protected]
17
4
Operating modes
•
Automatic (Auto):
The standard mode in which the heating system is operat
-
ed according to the pre-set temperature and on/off times.
•
Hot water (HWT):
The heating system is only used to ensure the hot water
supply, not to heat any floor heating system or radiators.
No control of the heat circuits (except for the frost protection function)
Pumps
Off
and mixers
Closed
•
Switch off (Off):
The heating system is switched off - with the exception of the
frost protection function. The control unit still shows all necessary information.
No control of the heat circuits (except for the frost protection function)
Pumps
Off
and mixers
Closed
•
Manual operation (Manual):
Allows various actions to be carried out manu
-
ally, such as manual activation of individual pumps and mixers. Also shows
additional information and values.
The standard display is retained in the Automatic, HWT and OFF operating
modes.
•
Sweep button:
The button for the chimney sweep to manually switch the
boiler
On
or
Off
during emission tests.
The following options are available:
Full load:
If an accumulator is connected, press this button to have the
control unit automatically change to full load measurement.
Empty accumulator:
Press this button to switch off all programmed con
-
trol functions of the boiler. The boiler operates at full load, assumes very
low outside temperatures and tries to transport as much as possible heat
into the heating system. All regulating devices like thermostatic head
valves and automatic control valves have to be opened manually to ensure
that the required amount of heat is transferred. This function ends auto
-
matically after 2 hours. If the chimney sweep button is pressed and no
accumulator is connected, the control offers two options:
full load
measurement
or
part load measurement
. All programmed control
functions of the boiler are switched off in part load measurement. The
boiler controls up to 100% (full load) combustion. After 15 min. full load -
the heat output is reduced to 50% (part load). After 5 min. part load, the
"
Chimney sweep
Start measuring"
message is displayed.
•
Heater OFF:
Button for switching heater off. Heater can be switched off
immediately or at a preset time.
Control of the heating circuits with pumps and mixer continues; only firing
is switched off.
Auto
Function
HWT
Function
Off
Function
Manual
Function
Sweep
Heater
OFF
Summary of Contents for Classic 12
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