Viessmann VITODENS 050-W Technical Manual page 27

Separate DHW cylinders for Vitodens 050-W
Dimensions of type CVB, 300 l capacity
VA
ELH
R
KW/E
362
714
E Drain
ELH Immersion heater
HR Heating water return
HR Heating water return, solar thermal system
s
HV Heating water flow
HV Heating water flow, solar thermal system
s
KW Cold water
R Inspection and cleaning aperture with flange cover (also suit-
able for installation of an immersion heater)
SPR1 Clamping device for securing immersion temperature sen-
sors to the cylinder jacket, with fixing points for 3 immersion
temperature sensors
SPR2 Clamping device for securing immersion temperature sen-
sors to the cylinder jacket, with fixing points for 3 immersion
temperature sensors
TH Thermometer (accessories)
VA Protective magnesium anode
DHW DHW
Z DHW circulation
DHW performance data at rated heating output
Rated heating output
for DHW heating
Continuous DHW output
For DHW heating from 10 to 45 °C and an
average boiler water temperature of 78 °C
VITODENS
DHW
HV/SPR
Z
HR
HVs/SPR
HRs
SPR
kW
kW
l/h
(cont.)
Recommended positioning of the cylinder temperature sensor
for solar operation
A Cylinder temperature sensor
(solar control unit)
B Threaded elbow with sensor well
(standard delivery)
Pressure drop on the DHW side
100 10
80 8
60 6
50 5
40 4
30 3
20 2
10 1
8 0.8
6 0.6
5 0.5
4 0.4
3 0.3
DHW flow rate
in l/h
A 300 l capacity
17.5
17.5
425
A
23.0
23.0
555
VIESMANN
3
29.3
26
638
27