Viessmann VITODENS 242-F Technical Manual page 23

Vitodens 242-F, type B2UB
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.
Note
All height dimensions have a tolerance of +7 mm on account of the
adjustable feet.
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 using codes at the control unit of the existing heating sys-
tem.
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 in kW
13
19
26
VITODENS
(cont.)
Speed settings in the delivered
condition in %
Min. pump rate Max. pump
rate
45
45
45
Note
Height dimensions in combination with a balanced flue bend
Ø 60/100 mm. In combination with a balanced flue bend
Ø 60/100 mm, the total height is reduced by 10 mm.
Note
In conjunction with a low loss header, heating water buffer cylinder
and heating circuits with mixer, the internal circulation pump runs at
a constant speed. The speed can be adjusted subject to demand by
changing the code at the control unit.
Specification circulation pump
Rated heating output
Circulation pump
Rated voltage
Power consumption
– max.
– min.
– Delivered condition
Energy efficiency class
Energy efficiency index (EEI)
60
65
80
kW 13 19
Type UPM3 UPM3
15-75 15-75
V~ 230 230
W 60 60
W 2 2
W 12 20
A A
≤ 0.20 ≤ 0.20
VIESMANN
26
UPM3
3
15-75
230
60
2
38
A
≤ 0.20
23