Viessmann Vitosol 100-FM Technical Manual page 53

DHW cylinders
(cont.)
Type
Connections
Heating water flow and return (male thread)
Cold water, DHW (male thread)
Solar heat exchanger set (male thread)
DHW circulation (male thread)
Immersion heater (female thread)
Energy efficiency class
Information regarding continuous output
When designing systems with the specified or calculated continuous
output, select a matching circulation pump. The stated continuous
output is achieved only if the rated boiler heating output is ≥ continu-
ous output.
ELH1
ELH2/R
455
881
923
E Drain
ELH1 Connector for immersion heater
ELH2 Flanged aperture for immersion heater
HR Heating water return
HV Heating water flow
KW Cold water
R Inspection and cleaning aperture with flange cover
SPR1 Sensor well for cylinder temperature sensor of cylinder tem-
perature controller (internal diameter 7 mm)
SPR2 Sensor well for temperature sensor of solar heat exchanger
set (internal diameter 16 mm)
WW1 DHW
WW2 DHW from solar heat exchanger set
Z DHW circulation
VITOSOL
WW1
Z
HV
SPR1
WW2
SPR2
HR
KW/E
SPR2
R
R
R
R
Rp
Performance factor N
L
■ According to DIN 4708, without return temperature limit
■ Cylinder storage temperature T
+5 K/–0 K
50 K
Performance factor N at heating water flow
L
temperature
90 °C
80 °C
70 °C
Information on performance factor N
The performance factor N depends on the cylinder storage temper-
L
ature T .
cyl
Standard values
■ T = 60 °C → 1.0 × N
cyl L
■ T = 55 °C → 0.75 × N
cyl L
■ T = 50 °C → 0.55 × N
cyl L
■ T = 45 °C → 0.3 × N
cyl L
Peak output (over 10 minutes)
■ Relative to performance factor N
■ DHW heating from 10 to 45 °C without return temperature limit
Peak output (l/10 min) at a heating water flow
temperature of
90 °C
80 °C
70 °C
Max. draw-off rate (over 10 minutes)
■ Relative to performance factor N
■ With reheating
■ DHW heating from 10 to 45 °C
Max. draw-off rate (l/min) at heating water
flow temperature
90 °C
80 °C
70 °C
CVW
= cold water inlet temperature +
cyl
16.5
15.5
12.0
L
L
L
VIESMANN
1¼
1¼
¾
1
1½
B
540
521
455
54
52
46
7
53