Viessmann VITODENS 242-F Technical Manual page 37

Installation accessories
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E F
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0
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Output in kW — heating circuit with mixer
A Vitodens, 13 kW
B Vitodens, 19 kW
C Vitodens, 26 kW
D Vitodens, 35 kW
E Output range of the heating circuit without mixer without line reg-
ulating valve
Calculating the transferable output (examples)
■ Vitodens 333-F, 3.8 to 19 kW. Supplying the heating circuit without
mixer through the internal circulation pump in the Vitodens.
1.1. Apply the output of the heating circuit with mixer to the horizontal
axis (example: 10 kW).
1.2. Extend the line vertically down to lower curve B.
1.3. Transfer the intersection horizontally to the l.h. vertical axis, and
read off the transferable output of the heating circuit without
mixer.
The example results in approx. 5.4 kW.
VITODENS
(cont.)
D
C
B
A
G
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F Output range of the heating circuit without mixer with line regu-
G Example
■ Vitodens 333-F, 3.8 to 19 kW. Supplying the heating circuit without
Connection set, DHW circulation pump
Part no. 7351 819
For installation in the Vitodens.
Comprising:
■ High efficiency DC pump
■ Flow regulating valve
■ Pipe assembly including thermal insulation
G
C D
B
A
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lating valve
mixer through an additional external circulation pump in the heating
circuit.
Note
This diagram applies only if the additional circulation pump has been
correctly sized.
1.1. Apply the output of the heating circuit with mixer to the horizontal
axis (example: 10 kW).
1.2. Extend the line vertically up to upper curve B.
1.3. Transfer the intersection horizontally to the r.h. vertical axis, and
read off the transferred output of the heating circuit without
mixer.
The example results in approx. 9 kW.
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VIESMANN
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