Potterton Gas condensing boiler, Инструкция по установке, эксплуатации и обслуживанию, Страница: 89 / 136

Restart lock
(3532) The restart lock prevents switching back on of a switched off boiler. Only after the
set time period has elapsed is it again released. This prevents too frequent
switching on and off of the boiler and achieves 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 se-
quence changeover and in this way, the utilisation of the boilers in a cascade is
influenced. After the set time has elapsed, the boiler sequence will be changed.
The boiler with next higher device address operates as lead boiler.
Auto source seq exclusion
(3541) - None : After the set time has elapsed, the boiler sequence will be changed.
-
First
: the first boiler in the addressing works as the lead boiler; for all other boil-
ers, the boiler sequence is changed after the time set in prog.no. 3540 has
elapsed.
- Last : the last boiler in the addressing always remains as the last boiler; for all
other boilers, the boiler sequence is changed after the time set in prog.no. 3540
has elapsed.
Leading source
(3544) The setting of the leading source is only used in combination with the fixed se-
quence of the source sequence (prog. no. 3540). The boiler defined as the leading
boiler is always put into operation first, and switched off last. The other boilers
are switched on and off in the sequence of the device address.
Return setpoint min
(3560) If the return temperature drops below the return setpoint set here, the return
maintenance is active. The return maintenance enables influences on the con-
sumers or use of a return controller.
Temp differential min
(3590) This function prevents too high cascade return temperatures and improves the
switch off behaviour of the cascade. If the temperature difference between the
flow and return sensor is smaller than the minimal temperature spread set here,
a source is switched off as early as possible independently of the set lead strat-
egy. If the temperature difference is again sufficient, the set lead strategy is again
switched to.
8.17 Solar
Temp diff on
(3810)
Temp diff off
(3811) The switching-on and switching-off point of the collector pump is set with these
functions. Basis is the temperature difference between collector temperature and
storage temperature.
Programming
396532 05.11 Paramount three 30-115 kW 89