HARGASSNER Classic 12, Operation Manual

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III
HARGASSNER Heating technology for
Biomass
A 4952 Weng OÖ Tel.: +43/7723/5274-0 Fax: +43/7723/5274-5 office@hargassner.at
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No. C4b End AT loading when temperature (parameter C4) has been reached on
the selected sensor

Only displayed when installer setting C2 is set with 2, 3 or 5 sensors
No. C4c AT minimum temperature
Lower accumulator limit temperature

When the accumulator temp is below the set value (accumulator sensor top),
AT loading starts
No. C4d Accumulator power reduction

When the preset accumulator filling level is reached, the boiler's power is
reduced.
No. C4e Accumulator error recognition

A warning is issued when the mixer is completely open for the preset time
and the temperature at the bottom accumulator sensor is 11 °C below that of
the return sensor.
No. C4 Accumulator

Setting the time for accumulator forced loading

Displays only if parameter C2 is set to AT with 2 sensors or AT with 3 sen -
sors

Accumulator forced loading at the set time and activated set temperature

E.g. for peak loads in the morning (e.g. 4:00 - 10:00)
.
No. C5a Accumulator forced loading

No accumulator forced loading when the set outside temperature is exceeded
.
No. C6 External heat circuit

Adjusting the boiler set temperature for an activated external heat circuit

If the value is changed and parameter C7 is set to external pump , then
adjust the service-parameter L5 = 50 °C as well

L5 ca. 5 - 10 [°C] less than C6a
No.C7 Function of terminal 83

Set the function of the output at terminal 83 on the main board.
• Fault lamp

Lights up for all faults
• Pump external heat circuit

Boiler is heated to the temperature set in parameter C6

External heat circuit pump is switched on at release temperature (service
setting L5 )
• District line pump

District line runs when a heating circuit or HWT pump parametrised for
district line is switched on
No. C8 External heat circuit and district heat pump

District heating pump runs if one of the referred pumps run
No. C9 External heat
• non-existent
• Oil/gas boiler
• Solid fuel boiler
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Acc. Bottom
ACC Top
No. C4b End accumulator loading (due
to domestic hot water production)
Sensor: (temperature C4)
AT center
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Accumulator min. temp. (Accumulator top)
Default: 0 °C
No. C4c Accumulator
0 °C
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Power reduction at fill level over
Default: 85%
No. C4d accumulator
85 %
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Error recognition acc. sensor
bottom after (0 = deactivated)
Default: 30 min.
No. C4e accumulator
30 Min
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No. C5 Forced acc. loading Week clock
ON
Off Off
ON
M Tu W Th F Sa Su
--:-- i
--:-- i --:-- i
--:-- i
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No forced accumulator loading at
outside temperature over
Default: 0 °C
No. C5a Accumulator
0 °C
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External heating setpoint temp.
Default: 69 °C
No. C6 External heat circuit
69 °C
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No.C7 Function of terminal 83
Fault lamp
External pump
Distr. heat pump 1
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No. C8 External heat circuit and district heat
pump
no district heating
with district line 1
Controlled district line
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No. C9 External heat
non-existent
Oil / Gas
Solid fuel