Webasto Thermo Top C Installation Instructions Manual - page 20
20
Thermo Top C
6 Exhaust System
CAUTION
Keep exhaust tube away from heat sensitive vehicle
components.
ATTENTION
Any collection of condensation in the exhaust pipe must
be drained immediately; drill a small drain hole at the
lowest point of the exhaust pipe.
The exhaust gas pipe can have several bends if necessary
(total of 270°, smallest bending radius 50 mm or 2 in.).
The total length of the exhaust pipe should not be less
than 500 mm (20 in.) or more than 1000 mm (39.5 in.).
The exhaust muffler should not be installed within 200
mm (8 in.) of the heater or the intake air silencer.
The discharge opening of the exhaust pipe must not
point in the direction of travel.
Rigid pipes made of alloyed steel with a minimum wall
thickness of 1.0 mm (0.039 in.) or flexible tubes of
alloyed steel can be used for exhaust installation.
ATTENTION
Ensure all exhaust clamps are properly tightened. Check
for exhaust leaks during heater operation.
7 Integration into the Coolant System
ATTENTION
• Torque hose clamps to 2.0 - 2.5 Nm (18 - 22 lb-in.)
• Avoid sharp bends and kinks when installing coolant hoses.
• The hose clamps at the heater must be mounted between the flared neck of the pipe and the heater.
• Position hose clamps in such a way to avoid cutting or damaging adjacent components.
• Ensure coolant hoses are routed at least 100 mm (4 in.) from heat generating components (exhaust, etc.)
• To ensure proper venting, route coolant hoses below coolant filler cap.
As a rule, the coolant hose supplied by Webasto should be used. If any other coolant hose is used it must conform
to DN standard 73411. Ensure coolant hoses are routed in a way that prevent kinks and allow for proper venting.
The coolant hoses should be pitched upward if possible.
ATTENTION
Clamp vehicle coolant hose with hose clamping pliers prior to cutting to prevent coolant spillage.
The coolant heater integration into the vehicle heater circuit is done in an “INLINE” fashion. Refer to Figure 39. The
heaters are to be installed in the cooling system in the flow of the vehicle’s heat exchanger.
ATTENTION
Follow the vehicle manufacture’s specifications for proper coolant mixture and type.
Ensure the coolant circuit is properly vented before operating the heater for the first time or after a coolant
change. The heater should be installed in a way to ensure static venting. Insufficient venting can result in a failure
during heater operation due to overheating.
ATTENTION
Ensure to pressure test the coolant system after heater integration.
Also see the plumbing schematic, page 26, of this manual for a general outline of the coolant circuit arrangement.
Fig. 37
Fig. 38
6.5