Viessmann VITODENS 242-F Technical Manual page 32

Vitodens 333-F, type FR3B
Variable speed heating circuit pump in the Vitodens 333-F
The integral circulation pump is a highly efficient DC pump with sub-
stantially lower power consumption than conventional pumps.
The pump speed and consequently the pump rate is regulated subject
to the outside temperature and the switching times for heating or
reduced mode. The control unit transmits the current default speed via
an internal data BUS to the circulation pump.
Individually match the minimum and maximum speed plus the speed
for reduced mode to the existing heating system using the control unit
codes.
In the delivered condition, the minimum pump rate (coding address
"E7") is set to 30 %. The maximum pump rate (coding address "E6")
is set to the following values:
Rated output range in kW
3.8-19
5.2-26
Residual head of the integral circulation pump
Vitodens 333-F, 3.8-19 kW
40 400
350
4
30 300
250
20 200
150
10 100
50
0 0
0 100
Flow rate in l/h
E Upper operational limit
Curve Circulation pump rate
A
B
C
D
VIESMANN
32
(cont.)
Speed settings in the
delivered condition in %
200 300 400 500 600
Setting code address "E6"
30 % E6:030
50 % E6:050
75 % E6:075
100 % E6:100
Circulation pump VI UPM-15-70 KM
Rated voltage
Power consumption max.
min.
Power consumption in
the delivered condition
– 19 kW
– 26 kW
55
65
A
700 800 900 1000
V~
W
W
W
W
E
D
C
B
1100 1200 1300 1400
VITODENS
230
70
6
27
37