9
Whatever the make of boiler, burner or flue system,
gas-tight flue systems can still create pulsation noise.
A change of resonance may be affected by rotating the
damper fitted into the flue outlet.
C
B
B
A
Fig. 1
1.
Undo M 5 screw
A
on lever
B
of the damper
lock.
2.
Adjust the lever until no further pulsation noise
occurs. The lever indicates the position of rotary
damper
C
.
3.
Tighten M 5 screw
A
on lever
B
of the damper
lock.
4.
Re-adjust the burner if required.
Shutting down the system
1.
Switch OFF the mains isolator or the power supply,
and safeguard against unauthorised reconnection.
2.
Pull plugs
fA
and
lÖ
from the burner.
3.
Close the gas shut-off valve.
Opening the boiler door
Danger
When working with high temperature insulating
materials that contain zirconium or aluminium
silicate ceramic fibres, fibre dust may develop.
This fibre dust can be harmful to health.
Only trained personnel may adjust or replace
the insulation. Wear suitable protective clothing,
especially breathing equipment and safety gog-
gles.
1.
Remove the gas supply pipe.
2.
Loosen 4 screws on the boiler door and open it.
!
Please note
Scratches inside the combustion chamber can
lead to corrosion.
Never place tools or other objects inside the
combustion chamber.
Commissioning, inspection, maintenance
Minimising pulsation noise
5692910
