Bulex Thema Condens AS 48-A, Руководство пользователя, Страница: 90 / 199

MAKSİCONDENSE 48-65
Notes
01/2018 84 Training 0020260859_00
3.3.5.7 New! Pump identification
When the unit is started, the electronics check the available unit pump with an identification routine.
This routine is only available in the pump electronics for the Grundfos UPMM 25
–105 (65 kW) pump.
No routine is available for the Grundfos UPMM 25
–85 (48 kW) pump
The pump sends the following diagram via the PWM analysis response:
Pump Type
Response 1
[2 s]
Response 2
[2 s]
Response 3
Grundfos UPMM
25
–105
10.5 m 60%
± 2%
90%
± 2%
100%
In the output range of 65 kW the Grundfos UPMM 25
–105 pump must always be
selected for pump replacement. Otherwise, the pump is not recognised by the unit
electronics.
3.3.5.8 New! Automatic purging function
Start condition and boiler purging:
If the unit/system pressure has fallen below
0.3 bar for at least 15 seconds , the point for a purging
sequence is set. The unit/installation purging is started from 0.5 bar .
If the heating pressure in the primary circuit rises above 0.5 bar for 30 seconds (start-up), an auto-
matic purging function starts. The function starts repeatedly if the system pressure has fallen below
0.3 bar for at least 15 seconds (e.g. purging of heating surfaces or other causes) during servicing
(maintenance). After filling the installation, the purging starts if 0.5 bar has been exceeded for at
least 30 seconds .
─
The function cannot be stopped, even by the competent person.
─
The burner does not start before the purging process has been completed.
─
After the purging, no air remains in the unit, which reduces the risk of damage
caused by cavitation and of noises in the heating installation.
─
Stored time periods for automatic purging: Domestic hot water circuit 390 seconds ;
heating circuit 390 seconds .
Following the automatic purging, the volume flow is measured (heating circuit or hot-water charg-
ing circuit) to ensure that the unit has been purged. Purging is completed when the threshold of the
low volume flow (Lower Flow Rate) has been exceeded.
If the threshold has not been exceeded, the purging function was not fulfilled and fault
F.75 is dis-
played.