eta PelletsCompact33-50 kW, Operation

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ETAtouch controller [Buffer] function block
39
• In the function block for the hot water tank, heating
circuits or other buffer storage tanks, the [Solar
heat diss.] parameter must be set to [Yes], so that
the buffer can request these consumers to take on
the excess solar heat.
The parameters [from outside temp.], [at buffer top]
and [at buffer bottom sol.] can be configured in the
buffer text menu.
The [Solar heat diss.] parameter can be configured in
the text menu of the hot water tank or the heating
circuit.
The parameters can be found under:
5.3.4.11 Priority the buffer
Explanation of [Priority]
Optional: only for solar heating systems with
switchover between several tanks
This parameter sets the priority for solar charging of
the buffer. A high priority means that this tank will be
charged by the solar heating system first. A low priority
means that it will be charged last.
The parameter can be found under:
5.3.4.12 Switch-on diff.
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 boiler.
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 boiler 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.
The parameter can be found under:
5.3.4.13 Circulation runtime
Optional: only for combination tank with circulation
pump
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.
The parameter can be found under:
5.3.4.14 Circulation pause
Optional: only for combination tank with circulation
pump
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.
The parameter can be found under:
5.3.4.15 Enable circulation
Optional: only for combination tank with circulation
pump
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.
The [Service] access level is required to perform
modifications.
Buffer
Buffer bottom Solar
Extra solar heat
from outside temp.
at buffer top
at buffer bottom sol.
Buffer
Priority
Hot water tank
Switch-on diff.
Hot water tank
Circulation
Circulation runtime
Hot water tank
Circulation
Circulation pause