Dovre ASTRO4GA - P, Installation Instructions & Operating Manual

Page: 40 / 162

Structural conditions may make it necessary for
(part of) the concentric duct system to be built in
first.
Facade sleeve through a facade of
non-flammable material
Read the "Installation Conditions" chapter carefully
and follow the installation instructions below.
The following illustration shows the situation of a finished
facade sleeve.
1. Start at the stove and add the concentric pipes one
component at a time along the route you decided on in
advance.
2. Next, install a concentric elbow and possible hori-
zontal change in direction and decide on the location
of the sleeve.
3. Make a 10 mm larger hole in the facade in such a way
that the air intake duct drains to the outside.
Use a 1 - 3 degree angle or a slope percentage of 2 -
5% for this.
Prevent dust and/or grit from getting into the stove
when drilling.
4. Decide on the length of the facade sleeve and shorten
the intake to the wall if necessary. Allow the flue gas
duct to extend approximately 10 mm from the air
intake duct.
Use tin-snips to shorten the air intake cover (0.5
mm).
Use a hacksaw to shorten the flue gas duct (0.6
mm).
Grinding is not recommended as it burns stainless
steel.
5. Remove burrs and sawdust.
6. Extend the facade sleeve through the facade from the
outside, with the “TOP” up, connect to the concentric
elbow and attach it to the outside of the facade (make
sure the air intake cover drains to the outside).
7. If so desired, the hole on the inside of the wall can be
finished with a wall plate.
Facade sleeve through facade of
flammable material
Read the "Installation Conditions" chapter carefully
and follow the installation instructions below.
1. Follow instruction steps 1 and 2 in the preceding sec-
tion.
2. Make a hole in the facade in such a way that the
sleeve is and remains at least 50 mm away from flam-
mable material all around. This can be done in the fol-
lowing two ways; see the illustration below.
a. Use a protective duct (1) of non-flammable mater-
ial with a diameter of 250 mm.
b. Make a tube (2) of non-flammable material, 250
mm square.
Prevent dust and/or grit from getting into the stove
when drilling.
10
Subject to change because of technical improvements