65
Supply pressure (flow pressure)
Steps
Below 17.4 mbar (1.74 kPa)
Do not commission the appliance. Notify your gas supply utility.
17.4 to 25 mbar (1.74 to 2.5 kPa)
Commission the appliance.
Above 25 mbar (2.5 kPa)
Connect the separate gas pressure governor upstream of the system and
set the pre-charge pressure to 20 mbar (2.0 kPa). Notify your gas supply
utility.
Function sequence and possible faults (gas condensing module)
Display
Measure
Control unit issues a heat
demand
No
Increase set value and en-
sure heat is drawn off
Yes
Fan starts
No
After approx. 51 s fault F9
Check the fan, fan connect-
ing cables, power at the fan
and fan control
Yes
Ignition
No
Fault EE
Check ignition module (con-
trol voltage 230 V across
plugs "X2.1" and "X2.2").
Check the gas supply.
Yes
Gas train opens
No
Fault EE
Check the gas train (control
voltage 230 V
∼
); check the
gas supply pressure.
Yes
Ionisation current builds
Symbol
A
No
Fault EE
Check setting of ionisation
electrode.
Purge the gas line.
Yes
Burner in operation
No
Shuts down below the set
boiler water temperature and
restarts immediately
Check the flue system for
tightness (flue gas recircula-
tion); check the gas flow
pressure.
Commissioning, inspection, maintenance
Checking the static pressure and supply pressure
(cont.)
5775 636 GB
Содержание C3TB
Страница 44: ...44 3 5 1 2x 2 4 7 6 Fig 43 Installation sequence Fitting the front panels 5775 636 GB Installation ...
Страница 48: ...48 14 Fig 47 Installation sequence If required for easier handling Dismantling cont 5775 636 GB Installation ...
Страница 136: ...136 Troubleshooting Repairs gas condensing module cont 5775 636 GB Diagnosis ...
Страница 143: ...143 Parts lists Heat cell assembly 5775 636 GB Components ...
Страница 148: ...148 0001 0001 0003 0003 0002 0002 0004 Fig 118 Parts lists External connection assembly 5775 636 GB Components ...
Страница 154: ...154 0006 0003 0005 0001 0002 0004 Fig 121 Parts lists Miscellaneous assembly 5775 636 GB Components ...
Страница 160: ...160 Parts not shown 0009 PCB IU100 B30 Parts lists Fuel cell assembly 5775 636 GB Components ...
Страница 161: ...161 Parts lists Fuel cell assembly cont 5775 636 GB Components ...
Страница 187: ...187 5775 636 GB ...