7
Checking the high limit safety cut-out setting
The high limit safety cut-out must not be
set higher than 110 °C; if required, set it
to a maximum of 110 °C.
Control unit installation and serv-
ice instructions
Filling the heating system with water and venting the system
Record the fill volume, water hardness
and pH value on page 30 and 31.
Note
Observe the "Water quality require-
ments" on page 62.
Filling siphon with water
1. Release the siphon and fill with water
(otherwise flue gas may escape).
2. Check that the condensate can drain
freely.
3. Refit the siphon.
Starting the heating system
Control unit operating and serv-
ice instructions, and neutralising
system operating instructions
1. Check the heating system pressure.
Permissible boiler operating pres-
sure: 4 bar
Commissioning, inspection, maintenance
Further details regarding the individual steps
5692 681 GB
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