10
Exhaust venting system
Excessive exposure to contaminated combus-
tion air will result in safety and performance-
related problems.
There must be no exposure to substances listed
in”Appendix A” on page 30.
Exhaust and combustion air are conveyed by
means of an exhaust venting system (tube in
tube): an exhaust tube AA3 (Fig. 6 – 1) and a
combustion-air supply tube ZR (Fig. 6 – 2).
Exhaust accessories
The exhaust accessories are legally mandated
pieces of furnace equipment. You must install
the original exhaust accessories listed here.
4
1
2
6a 6b
6
8
7
5
7
Side wall
Outside RV
Inside RV
3.5 x 25 (8x)
3
1
2
4
Combi
Wall cowl
3
9
10
Fig. 6
Item Quant.
Exhaust accessories
Exhaust venting system
1
1
Exhaust tube AA3 (Al,
Ø 2.2 in. (55 mm))
2
1
Combustion-air supply tube ZR
(Al/black, Ø 33/16 in. (80 mm))
Wall cowl
3
2
Exhaust tube clamp
5
1
Cowl seal
6
1
Wall cowl, inner part
6a
–
Connection for exhaust tube
6b
–
Connection for air supply tube
7
8
Screws B 3.5 x 25, stainless steel
8
1
Wall cowl, outer part
Fasteners
4
2
Hose clamps 70 – 90
9
*
Clamp ZRS (part no. 39590-00)
10
*
Screw B 3.5 x 40 or equivalent
(not part of scope of supply)
* at least one unit for exhaust venting system
longer than 2 ft (60 cm)
