15
Ascertaining the set value for BW 31A
Closing temperature
[°C]
Set value [mm]
DN15 DN20,
DN25
DN40
20
22.4
23.6
41.8
30
23.0
24.4
43.1
40
23.6
25.2
44.4
50
24.3
26.0
45.7
60
25.0
26.8
47.1
70
25.7
27.6
48.4
80
26.4
28.4
49.7
90
27.0
29.2
50.9
100
27.7
30.0
52.0
110
28.4
30.7
52.9
120
29.0
31.4
53.6
130
29.6
32.1
54.2
140
30.2
32.7
54.8
150
30.7
33.2
55.3
160
31.2
33.7
55.7
170
31.6
34.2
56.1
180
32.0
34.6
56.5
190
32.4
35.0
56.9
200
32.7
35.3
57.3
210
33.0
35.6
57.6
220
33.2
35.8
57.9
230
33.4
36.1
58.2
240
33.6
36.3
58.5
250
33.8
36.5
58.7
260
34.0
36.7
59.0
270
34.1
36.9
59.2
280
34.2
37.0
59.3
The set value is based on ambient temperatures of
18 – 21 °C. If the ambient temperature is higher or
lower use the following table to adjust the set value.
Ambient temperature
[°C]
Correction value [mm]
DN15 DN20,
DN25
DN40
9–12
+0.6 +0.75 +1.2
12–15
+0.4 +0.5 +0.8
15–18
+0.2 +0.25 +0.4
18–21
0
21–24
–0.2 –0.25 –0.4
24–27
–0.4 –0.5 –0.8
27–30
–0.6 –0.75 –1.2
Changing set value
Attention!
Risk of malfunctions or damage due to
incorrect setting of Thermovit regulator.
Only the correct number of plate pairs
ensures that the set value yields the
correct closing temperature.
Before adjusting the set value make
sure that the correct number of plate
pairs is used.
If necessary mount a Thermovit
regulator with the correct number of
plate pairs.
