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[Hot water tank] function block ETAtouch controller
Explanation of [Solar heat diss.]
Optional: only for accumulator tanks with solar heating
system
This parameter defines whether the hot water tank
may take excess solar heat from the buffer.
If this parameter is set to [Yes], the hot water tank takes
the solar excess up to the maximum temperature [Hot
water tank max.].
This parameter is factory-set to [No]. You must
check the conditions for the [Extra solar heat]
function in the text menu of the accumulator tank.
Explanation of [Priority]
Optional: only for solar heating systems with
switchover between several tanks
This parameter sets the priority for solar charging of
the hot water tank. 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.
Explanation [Circulation runtime]
Optional: only for circulation pump
This parameter specifies the duration for operating the
circulation pump after it has been started by the control
system. Once this time has expired, the circulation
pump is switched off for the set duration [Circulation
pause].
Example:
[Circulation runtime] = 3 minutes
[Circulation pause] = 10 minutes
If the circulation pump has been started, it is in
operation for 3 minutes and then disabled for
10 minutes. This means that it can only be requested
again by the control system after 13 minutes.
You can determine the required running time of
the circulation pump in the following way. Start
the circulation pump in the control system by means of
manual operation in the inputs and outputs menu. After
starting, measure the time until the fresh water module
warms up the return line for the circulation. This time
(e.g. 3 minutes) is required to heat the hot water pipe.
Then enter this time in parameter [Circulation runtime].
During this time measurement, no hot water may be
tapped (e.g. by sink, shower ...), because otherwise an
incorrect time is measured.
Explanation [Circulation pause]
Optional: only for circulation pump
This parameter sets the pause after a circulation pump
operation. The control system can only restart the
circulation pump after this pause/break has expired.
Example:
[Circulation runtime] = 3 minutes
[Circulation pause] = 10 minutes
If the circulation pump has been started, it is in
operation for 3 minutes and then disabled for
10 minutes. This means that it can only be requested
again by the control system after 13 minutes.
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