Note
The parameter Charging priority (1630) should be set to
"Absolute" when gas energy metering has been activated. If the
charging priority is not "Absolute" and there is a requirement for
heating operation at the same time as domestic water charging,
the gas energy is only taken into consideration in the meter for the
heating circuit.
Gas energy metering correction (2551)
The gradient of the linear approximation function is adapted here.
Value < 1: Leads to lower gas energy metering.
Value > 1: Leads to increased gas energy metering.
A value of 1 means there is no change compared to the approximation
function stored.
9.2.12 Cascade
Lead strategy (3510)
The heat generators are switched on and off acc. to the set lead strategy
taking the specified output range into account. To switch off the effect of
the output range, the limits must be set to 0% and 100% and the lead
strategy to late on, late off.
Late on, early off: Additional boilers are switched on as late as possible
(output range max) and switched back off again as soon as possible
(output range max). I.e. as few boilers as possible in operation or short
running times for additional boilers.
Late on, late off: Additional boilers are switched on as late as possible
(output range max) and switched back off again as late as possible (out
put range max). I.e. as few switching on and off processes as possible
for the boilers.
Early on, late off: Additional boilers are switched on as early as possible
(output range min) and switched back off again as late as possible (out
put range min). I.e. as many boilers as possible in operation or long run
ning times for additional boilers.
Release integral source seq (3530)
A value generated from temperature and time. The lag boiler is switched
on when the set limit is exceeded.
Reset integral source seq (3531)
The following boiler will be switched off in case of exceeding the setpoint
Restart lock (3532)
The restart lock prevents switching a switched off boiler being switched
back on again. It is only released again after the set time period has
elapsed. This prevents the boiler switching on and off too often and ach
ieves a stable operating condition of the system.
Switch on delay (3533)
Too frequent forward and back switching (cycles) of the boiler are avoided
by the switch-on delay and therefore a stable operating state is ensured.
Auto source seq ch'over (3540)
The sequence of lead boiler and following boiler is defined by the source
sequence changeover and in this way, the utilisation of the boilers in a
cascade is influenced. After the set time has elapsed, the boiler sequence
is changed. The boiler with next higher device address operates as lead
boiler.
The operating hours transferred from the generator to the cascade master
are decisive for calculating the hours run.
Auto source seq exclusion (3541)
None: The boiler sequence changes after expiry of the time set in prog.
no. 3540.
9 Settings
7658013 - 02 - 15092016
Paramount four 30 – 115 kW
97