Viessmann PM1 Installation And Service Instructions Manual page 30

Commissioning and adjustment
Setting parameters
23 Pump module flow rate min. control range
Display
25 %
... %
Note
Example with parameters "20" to "25", "29" & "2A":
See Fig. 15, page 33.
24 Pump module flow rate mid control range
Display
50 %
... %
Note
Example with parameters "20" to "25", "29" & "2A":
See Fig. 15, page 33.
25 Pump module flow rate max. control range
Display
100 %
... %
Note
Example with parameters "20" to "25", "29" & "2A":
See Fig. 15, page 33.
Display
The pump request switches the power sup-
ply ON or OFF.
The power supply is switched off with a
time delay.
The power supply is always ON.
30
(cont.)
Value
23:25
23:0
to
23:100
Value
24:50
24:0
to
24:100
Value
25:100
25:0
to
25:100
Value
26:0
26:1
26:2
Explanations
Control voltage flow rate for lower circulation pump
control range limit
Setting range: 0 to 100 %
Note
If parameter "00:2" is set (pump type "GRUND-
FOS"), the default setting switches automatically to
"23:30".
Explanations
Control voltage flow rate at
control range
Setting range: 0 to 100 %
Note
If parameter "00:2" is set (pump type "GRUND-
FOS"), the default setting switches automatically to
"24:65".
Explanations
Control voltage flow rate for upper circulation pump
control range limit
Setting range: 0 to 100 %
26 Pump module pump power supply
Power supply enable for circulation pump at plug
Explanations
The circulation pump power supply is switched on or
off immediately in the event of heat demand.
Shutdown of the power supply to the circulation pump
is delayed. The delay is set in parameter "28".
The circulation pump power supply is switched on
permanently.
of the circulation pump
⅓
.
sL