Installation manual

Webasto Thermo & Comfort N.A., Inc. 24 www.techwebasto.com
Exhaust System Thermo Pro 90
10. Exhaust System
The exhaust pipe (internal diameter 38 mm) can be installed with a length of 0.5 m to 5 m (1.6 ft to 16 ft) and several
bends totalling a maximum of 360° altogether. The minimum bending radius is 85 mm (3.35 inches).
The exhaust muffler is required
and must be installed near the heater.
The opening of the exhaust pipe must not point towards the front of the vehicle (see Figure 27).
The exhaust pipe opening must be located so that it cannot become clogged with snow and mud.
Rigid pipes of unalloyed or alloyed steel with a minimum wall thickness of 1.0 mm or flexible piping of alloyed steel
only must be used as exhaust tube. The exhaust pipe is secured to the muffler using an approved muffler clamp. See
Figure 27 for details. See the regulations section 2 for other requirements.
Figure 26: Exhaust muffler installation - enclosure kit only
A. Muffler
B. coupler (between heater and muffler)
C. “L” bracket
The exhaust muffler is secured to the heater using a coupler between the heater and muffler and a bracket fastened to
the underside of the enclosure. See Figure 26 for details.
Heater removed for
clarity of illustration
AA
B
C