Determining the required internal diameter
A
ΔT= 15K
ΔT= 20K
ΔT= 30K
ΔT= 5K
ΔT= 10K
C
B
D
2.5
2.5
Mixer control characteristics
2.0
0.1
0.2
0.5
1.0
1.5
5.0
Flow rate in m³/h
10
20 30 40
5
3
1
0.1
0.2
0.5
1.0
1.5
2.0
5.0
Heating circuit output
in kW
A
Divicon with three-way mixer
The identified operating ranges
B
to
D
provide optimum control
characteristics with the Divicon mixer:
B
Divicon with three-way mixer (R ¾)
Application range: 0 to 1.0 m
3
/h
C
Divicon with three-way mixer (R 1)
Application range: 0 to 1.5 m
3
/h
D
Divicon with three-way mixer (R 1¼)
Application range: 0 to 2.5 m
3
/h
Example:
Heating circuit for radiators with an output of
²
= 11.6 kW
Heating system temperature 75/60 °C (ΔT = 15 K)
c Specific heat capacity
µ
Mass flow rate
²
Output
´
Flow rate
²
=
µ
·
c · ΔT
c = 1.163
Wh
kg · K
µ
²
c · ΔT
=
kg
h
´
=
11600 W · kg · K
1.163 Wh · (75-60) K
= 665
m³
h
0.665
´
(1 kg ≈ 1 dm³)
Select the smallest possible mixer within the application range with
value
´
.
Result of this example: Divicon with three-way mixer (R ¾)
Bypass valve
Part no. 7464 889
To hydraulically balance the heating circuit with mixer. Inserted into
the Divicon.
Overflow valve
Part no. 7429 738
: R ¾
Part no. 7429 739
: R 1
Part no. 7429 740
: R 1¼
Only with manually controlled heating circuit pump. Fitted onto the
Divicon.
Installation accessories
(cont.)
VITOLADENS 300-W
/
VITOLADENS 333-F
VIESMANN
33
5822 425 GB
4