*only displayed in operating status “Boiler OFF“
Return valve STOP
Return valve Y1. Possible settings: “STOP” / “CLOSED” / “OPEN”.
OPEN: Equates 100% — accumulator return opened.
CLOSED: Equates 0% – accumulator return closed.
STOP: The setting “STOP” (if 100% open) is used together with the submenu “Load pump ON” to better
vent the system.
Load valve STOP
Load valve Y2 (only for heater systems with Y2).
Possible settings: “STOP” / “CLOSED” / “OPEN”.
OPEN: Equates 100% – lower accumulator connection open.
CLOSED: Equates 0% – lower accumulator connection closed.
STOP: The setting “STOP” (if 100% open) is used together with the submenu “Load pump ON” to better
vent the system
Load pump OFF
Possible settings: “OFF” / “ON”.
Actuator V1 CLOSED
Primary air control motor.
Possible settings: “OPEN” / “CLOSED”.
OPEN: Equates 100%.
CLOSED: Equates 0%.
Actuator V2 CLOSED
Secondary air control motor.
Possible settings: “OPEN” / “CLOSED”.
OPEN: Equates 100%.
CLOSED: Equates 0%.