If the system buffer feeds only heating circuits and no domestic hot water or other seasonal heated plant components, a buffer charging is not needed at high outside air temperatures and the buffer loading can be stopped.
In this case the heat demand will not be transmitted to the “HeatDemandOut”.
If heat demands of other consumers like DHW have to be transmitted to the heat generators, the users has to consider this in the CARE program, connecting it directly to the strategy using a MAX statement.
This function is disabled by default OAT-01 = 90 °C. To enable it, set OAT-01 to a value of e.g. 20 °C.
To transmit this signal to the heat generators, the output “StopHighOATemp“ = 1 and the outputs "BypassValve1" to “BypassValve4“ will be set to “bypass“, if this function is active.
Table 9. Parameter List Stop Loading at high OAT
Description |
Value Range |
Default Value |
Unit |
OAT-01: stop buffer loading high OAT limit |
0 … 100 |
90 |
°C |