Viessmann VITODENS 242-F Technical Manual page 23

Vitodens 242-F, type B2UA
Rated heating output
kW
13 to 19
26
Note
The dimensioned drawing shows example fittings for installation on
finished walls, for upward connection and connection to the left/right.
Order the connection sets separately as accessories.
For the dimensions of the individual connection sets, see the design
information.
If using the connection set with pre-mounting bracket for downward
connections on finished walls, maintain a wall clearance of 70 mm.
Variable speed heating circuit pump in the Vitodens 242-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") and the maximum pump rate (coding address "E6") are set to
the following values:
Rated heating output range in
kW
3.2-13
3.2-19
5.2-26
VITODENS
(cont.)
mm
201
224
Speed settings in the delivered
condition in %
Min. pump rate Max. pump
rate
20
20
30
Note
a
All height dimensions have a tolerance of +15 mm due to the adjust-
able feet.
Specification – circulation pump
Rated heating output
Circulation pump
Rated voltage
Power consumption
– Max.
– Min.
– Delivered condition
55
65
65
kW 3.2-13 3.2-19
Type UPM2 UPM2
15-50 15-50
V~ 230 230
W 37 37
W 6 6
W 20 25
VIESMANN
5.2-26
UPM2
15-70
230
3
70
6
35
23