Minimum Flow Temperature Setpoint Tvhw; Heat Generation Lock - Siemens RVA63.280 Basic Documentation

D.h.w.
Note
Chimney sweep function
Notes
124/184
Siemens Building Technologies
Landis & Staefa Division
2.55.2

Minimum flow temperature setpoint TVHw

The adjusted minimum flow temperature setpoint of setting line 171 will be activated
when a switch connected to terminal H1 (e.g. an air heater function for a warm air
curtain) closes its contact. During this switching status, the LED of the respective
heating circuit operating mode button flashes. For details, also refer to "flow
temperature setpoint contact H" (setting line 171) in Index.
When the minimum flow temperature setpoint is activated, d.h.w. is still being heated, if
required.
Optimally, this function can also be accomplished with the help of terminal H2 and
setting line 174.
2.55.3

Heat generation lock

Heat generation will be locked when a switch connected to terminal H1 (e.g. peak load
shaving via ripple control) closes its contact.
All heat demands of the heating circuits and of d.h.w. heating will be ignored. Frost
protection for the boiler will remain ensured.
The chimney sweep function can be activated although the heat generation lock is
switched on.
Optimally, this function can also be accomplished with the help of terminal H2 and
setting line 174.
Basic Dokumentation RVA63.280, RVA53.280 CE1P2374E
19.04.2001