42
3A/3B
15A/15B
41
145
40
40/156 53
1.
Plug burner cable
fA
and KM BUS
cable
aVG
into the burner control
unit.
2.
Plug control unit connecting cable
fÖ
/
aBH
, boiler sensor leads
§
A/
§
B, flue gas sensor lead
aG
A/
aG
B
and power cable
fÖ
on the burner
side into the connectors on the
mounting plate.
3.
Plug control unit connecting cable
fÖ
/
aBH
and KM BUS cable
aVG
into
the control unit.
Checking both gas train valves automatically for tightness
The burner control unit automatically
checks the valves for tightness when the
burner is started. If the valves are gas-
tight, the burner enters standard mode
and the burner starts.
If the first valve is not tight, fault code
"F E1" is shown on the burner control unit
display; if the second valve is not tight,
fault code "F E2" is displayed.
In either case, the gas train must be
replaced.
Danger
Escaping gas leads to a risk of
explosion.
Check test connector for gas
tightness.
Checking all gas connections for tightness
Danger
Escaping gas leads to a risk of
explosion.
Always carry out the following
steps.
!
Please note
The use of leak detection spray
can result in incorrect functions.
Leak detection spray must not
come into contact with electrical
contacts.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5794 780 GB
Summary of Contents for 7502860
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