Two-point or constant regulation (page 69)
Two-point regulation (factory-adjustment)
is required if the power rating of the
heating system is considerably more
than the calculated heat requirement
(e.g. in order to achieve a greater hot-
water capacity).
Constant regulation is recommended if
the heat rating corresponds to the
calculated heating requirement.
Setting the lower temperature (page 69)
The lower temperature can be set at the
potentiometer to the user’s desired level.
Technical specifications
Z
A
Z
A
13
GB
Device type
VRT 90
Operating voltage
max. 30 V=
Power consumption
max. 20 mA
Day-temperature range
+5 to +30°C
Lower temperature range
+5 to +20°C
Available heat-up phases
4 per hour
Proportional range
2 K
Switching difference
1 K
Dimensions W x H x D
148 x 85 x 40 mm
Connection leads
min. 3 x 0,75 mm
2
Protection rating
IP 30
Protection classification
III
Operating temperature
+5 to +50 °C
Permitted storage temp.
-25 to +70 °C
Содержание VRT 90
Страница 4: ...4 2 1 2 0 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 10 9 8 7 6 5 12 6 9 5 30 5 30 ...
Страница 5: ...5 2 4 2 3 2 2 2 1 2 0 1 9 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 10 9 8 7 6 5 4 3 2 1 12 6 9 3 8 7 6 5 4 ...
Страница 67: ...67 7 8 9 ...
Страница 68: ...68 C o 0 I C o C o 0 1 2 3 4 5 6 7 8 9 C o 0 1 2 3 4 5 6 7 8 9 C o 70 C 90 C 7 8 9 9 8 VRT 90 7 ...
Страница 69: ...69 5 Z A 10 0 15 20 C Z A 5 15 20 C 5 10 20 C 10 5 15 20 C 10 1 2 2 ...