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7. Underfloor and ceiling heating systems:
The limit thermostat must be set to the correct value. During the functional test, the flow
temperature may not exceed the maximum permissible level (usually 55 °C). If it does, pro-
ceed immediately as follows:
– Either close the valve manually, or
– Switch off the pump, or
– Close the pump isolating valve
8. Switch on power. The display must show something (e.g. the time of day). If not, the reason
may be one of the following:
– No mains voltage present
– Main fuse blown
– Main switch not set to ON
General information about operation
• Setting elements:
– Heating curve
– Setting knob
– Display; one operating line is assigned to each setting
– Buttons for selecting and readjusting the values:
Selecting the next operating line below
Selecting the next operating line above
Decreasing the displayed value
Increasing the displayed value
• Adopting a setting value:
The setting value is adopted by selecting the next operating line (or: Press Info button or one
of the operating mode buttons)
• Entering --.- or --:-- :
Press
or
until the required display appears
• Block jump function:
To select a single operating line quickly, two button combinations can be used:
Press
and
for selecting the next line block above
Press
and
for selecting the next line block below
Building Technologies
74 319 0618 0 a
17.04.2008
en
35/276
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