8
For example,
if the set pressure is 8 bars and wakeup pressure is 0.5 bars, a standby pump
will activate after the current system pressure drops below 7.5 bars and the wakeup period
is complete. The factory settings for booster pump mode has been set to 0.5 bars.
However, the concept of wakeup pressure differs in circulation mode. Since a single pump
is always active in circulation systems, the wakeup pressure mentioned in the menu is a
variable that only applies in systems without drivers, or with driver errors. 1. This variable,
applied to the pumps activated after the first one, activates standby pumps after the
activation period is completed and the current differential pressure is less than the set
pressure for the fixture by the wakeup pressure. If the current differential pressure value is
as high as the wakeup pressure value than the set value, the active pumps are deactivated
after the deactivation period is complete. The factory settings for circulation mode has
been set to 0.2 bars.
Graph 1: Pump ON / OFF vs. Wake-up Pressure on Constant Pressure Mode
t1
t1
t2
t2
P (bar)
t (sn)
Pump on demand
Set Pressure
.
p
t (sn)
Wake up zone
Wake-up
pressure
p : Wake-up pressure
t1 : Pump start delay time
t2 : Pump stop delay time
