Configuration parameter [Buffer] function block – TWIN
6.3.3 Buffer as a combination tank
Settings for buffer as combination tank
With a combination tank, you need to set
additional parameters for the hot water treatment.
Detailed descriptions of the parameters are provided
below.
Explanation of [Switch-on diff.]
Optional: only with combination tank
With a combination tank, this parameter regulates how
far the current warm water temperature can fall before
the hot water tank again demands heat from the pellet
burner.
If the value is set to 15 °C, the current hot water
temperature may drop by 15 °C from the value
[Hot water tank target]. The combination tank does not
demand heat from the pellet burner unless this
happens.
With a combination tank, this value can be set to
approximately 5°C to 8°C if the amount of hot
water is insufficient.
Explanation of [Flow temp raise]
The target temperature of the hot water tank in the
combination tank [Hot water tank target] is increased
by this value and demanded from the pellet burner.
Example:
[Hot water tank target] = 60 °C
[Flow temp raise] = 10 °C
=> 70 °C is demanded from the pellet burner.
Explanation of [Circulation runtime]
Optional: Only with circulation pump
This parameter sets the duration for operation of the
circulation pump after it has been started. This period
is only valid inside the set time slot.
After the set period has expired, the circulation
pump is switched off for the configurable duration
of the [Circulation pause] parameter.
Explanation of [Circulation pause]
Optional: Only with circulation pump
This parameter sets the period (pause) after a
circulation pump operating phase. The control system
can only restart the circulation pump after this time has
elapsed. This pause is only valid inside the set time
slot.
Explanation of [Enable circulation]
Optional: only for circulation pump
This parameter defines the minimum temperature of
the hot water tank for starting the circulation pump. The
circulation pump only starts once the hot water tank
has exceeded this temperature.
Hot water tank
Switch-on diff.
Flow temp raise
Circulation
Circulation runtime
Circulation pause
Enable circulation
To Next Page