Viessmann VITODENS 200-W Technical Manual page 21

Installation accessories
Installation example: Divicon with triple manifold
120 180 120
HV HR
d
HV
c
(shown without thermal insulation)
HR Heating return
HV Heating flow
Determining the required nominal diameter
5.0
2.5
2.0
1.5
1.0
0.5
0.2
0.1
Mixer control characteristics
A Divicon with mixer-3
The operating ranges marked B to D provide optimum control
characteristics with the Divicon mixer:
B Divicon with mixer-3 (R ¾)
Application range: 0 to 1.0 m
Example:
Heating circuit for radiators with an heating output of ² = 11.6 kW
Heating system temperature 75/60 °C (ΔT = 15 K)
c Specific thermal capacity
µ Mass flow rate
² Heating output
´ Flow rate
VITODENS 200-W
(cont.)
180 120
HR
A
B
C
D
3 /h
Dimensions Manifold with heating circuit connection
R ¾ and R 1
a 135
b 535
c 784
d G 1¼
1 3 5 10
Heating circuit output
in kW
C Divicon with mixer-3 (R 1)
Application range: 0 to 1.5 m
D Divicon with mixer-3 (R 1¼)
Application range: 0 to 2.5 m
² = µ · c · ΔT c = 1.163
kg · K
11600 W · kg · K
²
´ = =
c · ΔT 1.163 Wh · (75-60) K
Select the smallest possible mixer within the application limit with the
value ´.
R 1¼
183
583
784
G 2
5.0
2.5
2.0
1.5
1.0
0.5
0.2
0.1
20 30 40
3 /h
3 /h
Wh
´ (1 kg ≈ 1 dm³)
µ
kg m³
= 665 0.665
h h
VIESMANN
2
21