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0
40
30
20
10
50
PS1 on
TBYref
BY on
TKO
TxU
TBY
TBYoff
TxU + (08-002) + 2K
TxU + (08-002)
60
BY on
PS1 on
11.15. Collector bypass (option bypass)
The BYPASS option (08-109) is a frost protection measure in the collector circuit or for minimising heat losses.
The valve produces a short circuit (bypass) in the collector circuit so that no cold medium can get into the
consumers.
Only when the sensor (TBY) in the flow of the collector circuit reaches the temperature of the "storage tank sensor
bottom" (TxU) plus switch-off difference (08-002) plus 2K is charging of the storage tank enabled.
TBY > TxU + switch-off difference (08-002) + 2 K, then BY active
TBY < TxU + switch-off difference (08-002), then BY blocked
