System For Heating Dhw - Viessmann VITOSOL 100-F SV Technical Manual

Information regarding design and operation
A B C
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16
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8
6
0 5 10 15 20 25 30 35 40 45 50
Collector area in m²
Flow rate 40 l/(hm 2 )
A Vitocell 100-B, 300 l
Surface area, indirect coil 1.5 m
B Vitocell-M/Vitocell-E, 750 l
Surface area, indirect coil 1.8 m
C Vitocell 100-B, 500 l
Surface area, indirect coil 1.9 m
D Vitocell-M/Vitocell-E, 950 l
Surface area, indirect coil 2.1 m

System for heating DHW

DHW heating in detached houses can be realised either with one dual
mode DHW cylinder or with two mono mode DHW cylinders (for ret-
rofitting an existing system).
Examples
For further detailed examples, see the "System examples" manual.
M
System with a dual mode DHW cylinder
VITOSOL
D
2
2
2
2
(cont.)
System with two mono mode DHW cylinders
The basis for sizing a solar thermal system for DHW heating is the
DHW demand.
Viessmann packs are sized for a solar coverage of approx. 60 %. The
cylinder capacity must be greater than the daily DHW demand, taking
the required DHW temperature into account.
To achieve solar coverage of approx. 60 %, the collector system must
be sized so that the entire cylinder capacity can be heated on a single
sunny day (5 hours of full sunshine) to at least 60 °C. This would allow
for a subsequent day with poor insolation to be bridged.
M
VIESMANN
137
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