9
3.
Check that the condensate can drain freely.
4.
Refit the siphon.
Commissioning the system
Control unit operating and service instructions,
and neutralising system operating instructions
0
1.
Check the heating system pressure.
Permissible boiler operating pressure: 5.5 bar
(550 kPa)
0
2.
For open flue operation: Check that the ventilation
facility in the installation room is open.
0
3.
Check the gas supply pressure.
0
4.
Open the gas line shut-off valves.
0
5.
Switch ON the mains isolator (outside the installa-
tion room).
0
6.
A
B
D
C
Fig. 2
Switch ON system ON/OFF switch
B
at the con-
trol unit. If fault indicator
A
on the control unit illu-
minates and display
C
on the burner control unit
flashes, first reset the system. For this, press reset
button
D
on the burner control unit.
Note
The system can enter a fault state during commis-
sioning due to a lack of gas in the gas line. The
fault indicator on the control unit then illuminates.
Purge the gas line again and reset the burner con-
trol unit.
0
7.
Adjust the codes on the boiler control unit in
accordance with the table on page 25.
Control unit installation and service instruc-
tions
0
8.
Check the function of the neutralising system and
the hydraulic seal in the trap.
Neutralising system operating instructions
0
9.
Check all gaskets and plugs, and retighten if nec-
essary.
Note
We recommend checking all connections on the
heating water side for leaks approx. every 500
hours run. See page 17.
10.
Check the boiler door and flue gas collector cover
a few days after commissioning and retighten all
screws.
Danger
For safe operation, a minimum operating pres-
sure of 0.5 bar (50 kPa) is absolutely essential.
A minimum pressure switch can be used to
safeguard this.
Commissioning, inspection, maintenance
Filling the trap with water
(cont.)
5783 337 GB
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