Viessmann VITODENS 242-F Technical Manual page 32

Vitodens 333-F, type B3TA
Variable speed heating circuit pump in the Vitodens 333-F
The integral circulation pump is a highly efficient pump with substan-
tially lower power consumption than conventional pumps.
The pump speed and consequently the pump rate are regulated sub-
ject to the outside temperature and the switching times for heating or
reduced mode. The control unit transmits the current default settings
to the circulation pump via an internal data BUS.
The min. and max. speed and the speed in reduced mode can be
adjusted at the control unit on the existing heating system by using
codes.
In the delivered condition, the minimum pump rate (coding address
"E7") is set to 10 %. The maximum pump rate (coding address "E6")
is set to the following values:
Rated heating output range in kW
1.9-11
1.9-19
4.0-26
4
VIESMANN
32
(cont.)
Speed settings in the de-
livered condition in %
45
65
65
Specification – circulation pump
Rated heating output kW
range
Circulation pump Type
Rated voltage V~
Power consumption
– Max. W
– Min. W
– Delivered condition W
1.9-11 1.9-19 4.0-26
UPM2 UPM2 UPM2
15-50 15-50 15-70
230 230 230
37 37 70
5 5 5
14 24 39
VITODENS