Regulating The Water Temperature - REMEHA Avanta Plus 35c Installation And Service Manual

Remeha Avanta Plus
Provided that the situation is not actually hazardous, the
Remeha Avanta Plus will always try to supply heat.
The 'abc '- control prevents unnecessary additional call outs.
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8.3.3 Regulating the water temperature

The Remeha Avanta Plus is fitted with an electronic tempera-
ture regulator with flow and return temperature sensors. The
flow temperature can be set to between 20 and 85°C, see
2.9.8 (factory setting 75°C). The boiler modulates it's output up
and down to match the flow set point from internal or external
control. When the boiler is at it's at minimum output and the
flow temperature still continues to rise, once the flow set point
is exceeded by 5°C the boiler will shut down on a controlled
stop (code 8).
8.3.4 Low flow / water protection
The Remeha Avanta Plus has a low-water protection based on
temperature readings. By modulating down as soon as there
is a risk of an insufficient water flow, the boiler will keep work-
ing for as long as possible. An insufficient water flow, however
caused, - indicated by a flow/return dt ] 45°C or a rate of
rise in the flow temperature > 1°C/sec – will be sensed by
the 'abc control which will shut the boiler down in a blocking
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mode with the display showing (code 9) for 10 minutes and
before re-starting.
If there is no water in the boiler or if the pump is not running, it
will go to lock out (code é7) and require manual re-set.
8.3.5 High Limit temperature protection
If the flow temperature exceeds 110°C the high limit tempe-
rature protection device switches off the boiler in a lock out
mode with the display showing (code é1) This mode will
require a manual re-set.
When the fault is corrected, the boiler can be restarted by
pressing the reset-key on the control panel and holding for 3
seconds.
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