Viessmann VITOSOL SERIES Technical Manual page 69

DHW cylinders
(cont.)
500 litre capacity
BÖ
476 498
BÖ Inspection and cleaning aperture
E Drain
HR Heating water return
HR Heating water return, solar thermal system
s
HV Heating water flow
HV Heating water flow, solar thermal system
s
Cylinder temperature sensor for solar operation
Cylinder capacity 300 l, arrangement of cylinder temperature sensor
in the heating water return HR
s
A Cylinder temperature sensor (standard delivery of solar control
unit)
B Threaded elbow fitting with sensor well (standard delivery)
Performance factor N
L
To DIN 4708.
Upper indirect coil.
VITOSOL
WW
HV
SPR1
Z
HR
HVs/SPR2
HRs
KW/E
KW
SPR1 Cylinder temperature control sensor
SPR2 Temperature sensors/thermometer
WW
Z
Cylinder capacity 500 l, arrangement of cylinder temperature sensor
in the heating water return HR
A Cylinder temperature sensor (standard delivery of solar control
unit)
B Threaded elbow fitting with sensor well (standard delivery)
Cylinder storage temperature T
+ 50 K
b
Cold water
DHW
DHW circulation
s
= cold water inlet temperature
cyl
+5 K/–0 K
SPR
10
VIESMANN
69