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Concentric Horizontal Vent Kit
Bosch Thermotechnology Corp.
Data subject to change
Installation Manual
3.2 Appliance Adapter
Discard original appliance adapter, vent flange and gasket that was
supplied with the boiler.
Set the appliance adapter down onto the pipe ensuring that the analyzer
ports are facing to the front of the appliance and the adapter screw holes
are aligning with those of the appliance.
F
ig. 4 Installing adapter
Insert the 4 screws, but do not tighten all the way.
3.3 Elbow and Wall Termination
f
Apply a small amount of clean water as lubricant on all gaskets.
f
Place elbow on top of the appliance adapter and align.
Fig. 5 Installing elbow
While the screws are not fully tightened, the appliance
adapter can be swivelled around its vertical axis.
f
Measure the length of the vent terminal assembly (
Fig. 6, [1])
taking into account the thickness of the outside wall [S] and the
distance from the outside wall to the end of the vent pipe [L]. It is
recommended to keep at least 4" (100mm) clearance from the ceiling
or joists for accessibility reasons.
F
L
13
³/₁₆" - 20⅞"(335 - 530mm)
1/4" per foot
(50 mm per meter)
K
S
1
≥
4"(100mm)
ig. 6 Penetration through the outside wall
f
Select the required diameter [K] of the hole in the wall according to
the wall thickness S.
Sizing hole penetration
Wall Thickness S
Diameter K
6" - 9 ½" (150 - 240 mm)
6 1/4" (155 mm)
9 ½" - 16½" (240 - 420 mm)
6 1/2" (165 mm)
16½" - 20 ⅞" (420 - 530 mm)
7" (170 mm)
f
Cut the hole in the wall while allowing clearance for the required pitch
of the air/vent pipe.
f
Adjust the vent pipe length to the distance [L] required & secure with
three self tapping screws [2].
1
2
L
13
³/₁₆" - 20⅞"(335 - 530mm)
1.
2.
3x
Fig. 7
