Sizing Aid For The Vitodens 242-F - Viessmann VITODENS 242-F Technical Manual

Design information
60%
50%
40%
100
DHW demand l/d
A South 30º
B South-west 30º and south-east 30º
C West 30º and east 30º
1. Determine the DHW demand (see page 73).
Assumption: 40 l/day and person ≙ 160 l/day.
2. Draw a vertical line to the required solar coverage (assumption:
50 %).
3. Draw a horizontal line to the existing roof orientation/inclination
(assumption: South 30°).
4. Extend the intersection downwards and read off the required solar
5
collector area.
The example results in 2.5 m

Sizing aid for the Vitodens 242-F

Sizing for Germany, Belgium, Poland, Lithuania, Latvia, Slova-
kia, Czech Republic and northern/central France
Reference location Würzburg (DE)
VIESMANN
74
(cont.)
150 200 0
2
.
H
0.5 1 1.5 2 2.5 3
Collector area m²
D South-west 90º and south 90º
E South-east 90º
F West 90º
G East 90º
5. Selection of the solar collector area that is physically possible:
In the example 3.0 m
6. Draw a vertical line from the selected solar collector area (3.0 m
to the intersection with the existing roof orientation.
7. Draw a horizontal line to the intersection with the line of the DHW
demand and read off the achievable coverage.
In the example approx. 53 %.
A B
C
D
E
F
G
3.5 4 4.5 5 5.5 6
2
.
2
)
VITODENS