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12. POSSIBILITIES FOR CONNECTING THE CONCENTRIC FLUE SYSTEM
12.1 Direct exterior wall duct (see page: 26, figure 1.2).
Determine the position of the unit and close the exterior wall duct. When placing directly against the exterior wall
(e.g. cavity wall) ensure the exterior wall duct (Y Max) is shortened, but only if required. In all installation situa-
tions, take into account the possible application of the radiation plate delivered with the unit.
12.2 Indirect exterior wall duct (see page: 26, figure 1.3 and 1.4).
Always fit a length of X=1 metre vertical on the unit, followed directly by a bend of 90° with a length of X=1
metre and the wall terminal. The horizontal part can be extended to 4 metres plus wall duct (Y maximum) if re-
quired. From 1 metres to 4 metres the restriction plate (O) should be mounted.
12.3 Roof pass-through without slope (see page: 26, figure 1.5).
You can use a direct pipe layout without a slope for a maximum length of X=12 metres (excluding the roof termi-
nal) measured from the connection on the unit. The minimum length is 3 metres. You can have a flue terminal at
every position on the roof face (both flat and sloping); the flue exit and combustion air supply are located in the
same pressure area. Between 2 and 5 meters restrictor plate (O) should be mounted. . From 5 metres and above
the restriction plate (O) and restriction plate (P) should be mounted.
12.4 Roof pass-through with 45° slope (Refer to page: 26, figure 1.6).
Always fit a length of X=1 metre vertically on the unit. Next, continue building up the flue pipe using two 45°
bends (the calculation length for each bend is 1 metre) until you have reached the maximum pipe length of 12
metres (including bends, excluding roof pass-through). Between 2 and 5 metres the restrictor (O) should be
mounted. From 5 metres and above the restriction plate (O) and restriction plate (P) should be mounted.
12.5 Roof pass-through with 90° slope (see page: 26, figure 1.7).
Always fit a length of X=1 metre vertically on the unit. Next, continue building up the flue pipe using two 90°
bends (the calculation length for each bend is 2 metres) until you have reached the maximum pipe length of 12
metres (including bends excluding roof pass-through). Take into account a maximum horizontal layout of Y=4
metres (measured between bends) and also ensure sufficient gradient.
12.6 Connection to existing flue pipe.
See page 15 “INSTALLATION INSTRUCTIONS REGARDING EXISTING FLUES”
Use the special concentric connection pieces for existing ducts and keep strictly to the installation instructions.
12.7 Installing the restriction plate (O) and (P) duct (see page: 30)
∗ Hold the ceramic baffle plate (G) with one hand while you remove the decoration strip (1) with the other
hand.
∗ Slide the baffle plate a little forward so it comes out at the back from its fixture, after which it can be re-
moved from the unit.
∗ Carefully remove the ceramic side walls (H) and (I).
∗ Dismantle the baffle plate holder by loosening 2 bolts (3).
∗ Place the restriction plate (O) behind the bracket. (Only when instructed)
∗ Mount the restriction plate (P) to the restriction plate (O) with 2 parkers and place the entirety behind the
bracket. (Only when instructed)
