4.5.2 Boiler - Temperatures
System menu
Boiler
Boiler temperature setpoint
The boiler temperature is regulated to this temperature.
Setting range T4: 60 – 90 °C
Setting range TX / TI / T4e: 70 – 90 °C
Shutdown if current boiler temperature is higher than boiler
se
If the boiler temperature setpoint is exceeded by this
value, the boiler follows the shutdown procedure. The
boiler starts up again below the boiler temperature
setpoint.
Always shutdown when boiler maximum setpoint is
exceeded by +
If the maximum boiler temperature setpoint is exceeded by
this value, the available heating circuit pumps and DHW
tank loading pumps are also activated for cooling the
boiler. If the current boiler temperature falls below the
boiler temperature setpoint, the boiler starts up again.
Minimum boiler temperature to release all pumps
When the current boiler temperature reaches this value,
the storage tank loading pump starts (hysteresis: 2°C).
Minimum return temperature
Prerequisite: Return temperature control with mixing valve
Minimum temperature of return to boiler.
Enable return mixer only with active storage tank pump
Prerequisite: “Variant 2 and 5” or “Variant 3”
Return mixer is controlled only when the store loading
pump is active. If the pump stops, the mixer closes the
total return / opens the bypass.
Target temperature difference, flow/return temp.
Defines the desired difference between flow and return
temperature in boiler heating mode.
Return setpoint delay
Prerequisite: Maintaining outfeed through return feed
mixer
Waiting time for calculating the return temperature setpoint
adjustment. Once the specified time has passed, the
heating system temperatures are evaluated.
Return setpoint boost (power influence)
Prerequisite: Maintaining outfeed through return feed
mixer
This parameter determines how heavily the deviation of
the actual boiler temperature from the boiler temperature
setpoint is weighted.
Return feed lift at min. dif. at min. output
Prerequisite: Maintaining outfeed through return feed
mixer
Minimum difference between boiler temperature setpoint
and return temperature setpoint. The temperature
difference between the boiler outfeed temperature and
boiler return temperature should not be below this value.
This parameter applies to partial load of the boiler.
Return feed lift min. dif. at 100% output
Prerequisite: Maintaining outfeed through return feed
mixer
Minimum difference between boiler temperature setpoint
and return temperature setpoint. The temperature
difference between the boiler outfeed temperature and
boiler return temperature should not be below this value.
This parameter applies to nominal load of the boiler.
An interpolation is made between the two parameters
between partial load and nominal load.
Heating circuit overheat invariable mode
Prerequisite: Variable mode activated or boiler system in
the cascade
The boiler setpoint temperature in heating mode is
increased by this value compared to the required flow
temperature.
Use quick throttle function at RL temperature increase
▪ YES: Response to fast load change. If quick regulation
is switched on, the return temperature is permanently
monitored and if it increases unusually quickly (e.g.
because a major consumer has dropped out), the feed
is immediately reduced to the minimum setting so that
the boiler does not overheat.
Temperature rise in return feed for quick regulation
The quick regulation responds to this temperature increase
within the set monitoring time.
Parameters overview
4
Boiler
Service manual Lambdatronic H 3200 for wood chip boiler | B1480721_en
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