Product details
6 720 805 339 (2014/09)
9
Constant DHW output
The constant DHW output shown in the specification refers to the
following:
• Flow temperature 85 °C
• Outlet temperature 45 °C
• Cold water inlet temperature 10 °C
• Maximum heat input (heat source input at least the same as the
cylinder coil output)
Reducing the specified heat input will result in a reduction in the
constant DHW output and the performance factor (N
L
).
Pressure drop, internal indirect coil (in mbar)
Example:
With a water/propylene-glycol mixture of 55/45 (frost protection down
to approximately – 30 °C), the pressure drop is approximately 1.3 times
the value for tap water.
Fig. 5
TC-150 and TC-180
p
Pressure drop
V
Heating water volume
Fig. 6
TC-210, TC-250 and TC-300
p
Pressure drop
V
Heating water volume
When calculating the pressure drop in the solar circuit:
▶ Take the influence of the antifreeze used and the
manufacturer's details into account.
Pressure drop values resulting from the mains are not
taken into account in the diagram.
0
20
40
60
80
100
120
140
160
180
200
0
200
400
600
800
1000
1200
1400
1600
Δ
p
/mbar
.
6720645 525-08.1O
V
/l/h
.
Δ
p
/mbar
.
6720645 525-09.1O
V
/l/h
0
50
100
150
200
250
300
350
400
0
200
400
600
800
1000
1200
1400
1600
1800
2000
.
