Additional information
98
System components
(continued)
Fixed high limit, Part No. 7820 036
The fixed high limit has a factory setting of 110°C/ 230°F.
Electromechanical temperature switch based on the liquid expansion principle
with interlock
Intrinsically safe; interlocking also takes place if the capillary tube is leaking or
if ambient temperatures are below –10°C / 14°F
Limits the boiler water temperature to the maximum permissible value by
cutting out and interlocking
Can be adjusted with the slotted screw
A
at the rear of the unit to 99°C /
210°F (cannot be reset to 110°C / 230°F once adjusted)
Reset unit by pressing the reset button ”
E
” on the front of the programming
unit if the temperature has fallen approx. 15 K below the shut down temperature
Central fastening M 10, capillary 3600 mm long
Tests:
Functional check via TÜV TEST button
Adjustable high limit, Part No. 7817 531
The adjustable high limit has a factory setting of 95°C / 203°F
Electromechanical temperature switch based on the liquid expansion principle
Controls the maximum boiler water temperature (e.g. in emissions test mode)
Can be adjusted to 100°C / 212°F by altering the setting
of the stop dial or by removing the cams
Set the lower limit at least 20°C / 36°F
higher than the domestic hot water
temperature, the upper limit at least
15°C / 27°F lower than the fixed
high limit.
Adjusting shaft 6 mm / 0.27 inches,
flat topped
Adjusting knob pushed onto shaft
from front
Capillary 3600 mm / 141.7 inches long
Sensor 3 mm / 0.1inches thick,
180 mm / 7.1inches long
Tests:
Functional check via emissions test mode
5285
941
-
0
1
IMPORTANT
