74
Gas Filter
Safety Vent Valve
Installation and mounting of the gas
filter
The gas filter may be installed in any
desired position. Take care only to
observe the direction of flow of the gas
(arrow on filter housing). Make sure
there is adequate clearance to facilitate
the removal of the cover and replace-
ment of the filter cartridge.
Filter replacement
The filter cartridge should be replaced
by a new one as soon as a high pres-
sure drop is noticed. If a new filter cart-
ridge is not at hand it will be possible to
wash the filter mat in 40°C water adding
some light-duty detergent. Allow the
mat to dry before reinstallation.
NOTE:
For the installation of the filter
mat take care to observe the marking or
sticker.
Safety vent valve
Connection: R 1“, R 11/2“
Relief pressure: max. 1 bar
Single-seat valve
Tight zero lock
Maintenance free
The safety vent valve type SL 10 is pro-
vided to relieve short-time pressure sur-
ges upstream of burner installations or
to avoid pressure increases beyond an
acceptable limit.
1
Setting screw
2
Load spring
3
Diaphragm
4
Vent opening R „
5
Internal influencing feature
6
Valve sealing
7
Valve seat
8
Closing cover