Operation and Maintenance Manual - GB
G
B
www.atmos.cz
GB-43
• Parameter S16
- Temperature of the top sensor (TV) at which the burner is started…..
(60 °C)
It is the minimum temperature of water that can be reasonably utilized in the heating system.
• Parameter S17
- The temperature of the bottom sensor ((TS, or TK for S15 = 3)) at which the
burner is stopped…..
(75 °C)
It is the maximum temperature of water that corresponds to requirements of the heated building
and the designed heat exchangers in the system (radiators and floor heating).
CAUTION
– Do not set this value too high to avoid disconnection of the safety thermostat on
the boiler.
Always set the control thermostat on the boiler to the maximum value (95 °C)
. If
the control thermostat on the boiler intervenes before the burner is switched off by the signal of
the TS sensor in the bottom part of the accumulation tank, the system probably finds itself in the
state of hydraulic imbalance and you should check and adjust it. You can e.g. throttle the shortcut
in the boiler circuit or the return line from the heating system towards the accumulation tank.
• Parameter S18
– describes the required temperature of boiler TK, which the burner is switched
off at if S15=4…
(85 °C)
• Parameter S19
- difference between TK temperature (for re-starting the burner) for S15 = 4…
(5 K)
• Parameter S24
– maximum flue gas temperature...
(250 °C)
If you connect a
flue gas temperature sensor (TS)
to the burner and in a mode of the burner this limit
value is exceeded, a warning message will appear on the display. It will notify the operator of the neces-
sity to clean the heat exchanger of the boiler or the installer of the necessity to reduce the burner power
to avoid
unnecessary wasting of fuel. The operation of the burner is not limited by this message in
any way
and to clear the message
you can just switch off and on
the main switch on the boiler.
• Parameter S26
– is the function for defining the logic of deactivating the burner based on the TS or
TK sensor, when S15=3. Connection of the boiler with a tank equipped with a solar exchanger…
(1)
a)
S26 = 0
…. The burner permanently works based on the upper TV sensor (activation tempera-
ture) and via the TK sensor (deactivation temperature). The lower part of the tank permanently has
enough room for energy from the solar collector (TS sensor)
b)
S26=1
… the burner permanently works based on the upper TV sensor (activation temperatu-
re) and the configured logic automatically takes care of switching between the middle TK sensor
and lower TS sensor. Whether the burner is deactivated based on TS or TK is decided based on the
temperature on the solar panel (TSV) and the temperature on the lower part of the accumulation
tank (TS), where the solar exchanger is located. If the solar panel can efficiently heat up water in
the accumulation tank, the burner is turned off based on the TK sensor, so that the tank can store
energy from the sun.
• Parameter S27
- activation difference of function S26 = 1…
(10 K)
If the temperature on the solar panel (TSV) exceeds the temperature in the lower part of the tank
by the activation difference, the boiler deactivation function will be switched from the bottom TS
sensor to the middle TK sensor.
If a function for solar panel pump control is activated directly from the boiler regulation (S6 = 14
or S14 = 4), the same logic will be used to activate the solar pump.
