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5712 717 v1.0
Vitotronic 100, KW10B Installation, Start-up and Service
Altering Settings
Adjustable High Limit
The default setting of the adjustable high limit (AHL) is
167° F (75° C).
The AHL sets the maximum boiler water temperature.
It deactivates the burner control circuit when the desired
temperature is reached. The AHL resets automatically on
a decrease in boiler temperature.
Adjustment to 189° F (87° C)
g Electro-mechanical temperature limit with liquid
filled capillary
g Controls maximum boiler water temperature
[Factory setting 167° F (75° C)]
g Adjustable to 189° F, 203° F and 212° F (87° C,
95° C and 100° C) by breaking off tabs enabling
dial to rotate right to desired maximum temperature.
The AHL must not be set higher than 167° F (75° C)
if the FHL is set to 212° F (100° C).
WARNING
AHL setting must be at least 36° F (20° C) higher than
DHW tank temperature.
IMPORTANT
CAUTION
If adjusting the fixed high limit to 212° F (100° C),
DO NOT set adjustable high limit higher than 167° F
(75° C).
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