Eberspracher Airtronic D2 Installation Manual - Exhaust and Combustion Air
Exhaust and combustion air
14
Exhaust
The exhaust system included in the kit comprises of an
exhaust hull fitting, a flexible twin walled stainless steel
exhaust, securing clamps and exhaust support brackets.
A silenced exhaust and bend with drain coil are available
as an option.
Installing the hull fitting
The position of the exhaust hull fitting will depend on
several factors, where you have located the heater,
whether your boat is sail or power, and the suitable
surfaces available.
On a sailboat, the preferred location is on the transom,
as it is normally the area least likely to be affected by
seawater when sailing. It is also close to the heater, if it
is located in a cockpit locker.
On a motorboat, the transom or side of the hull are
suitable locations. However, when locating the hull fitting
on the transom of a motorboat, the fitting should be
positioned a minimum of 300mm above the waterline to
avoid any following seas covering the fitting when the
boat slows suddenly.
Attaching the exhaust
To avoid water ingress, the exhaust should be installed
and routed as illustrated below.
Use the exhaust support brackets provided to secure the
exhaust and keep it away from heat sensitive materials.
Attach the condensate drain coil to the exhaust elbow
and using the drain tube supplied route the tube into a
suitable bilge area.
Please Note!
Small arrows indicating the direction of flow have
been cast into the fittings to differentiate between the
combustion air and the exhaust fittings at the heater.
!
Caution!
Safety instructions!
Although the supplied exhaust is insulated, it will get hot
during and immediately after heater operation. To avoid
potential safety issues the exhaust system must be
installed according to these instructions.
• The exhaust hull fitting must not be fitted to a deck or
horizontal surface.
• Under no circumstances connect the heater exhaust
to an engine exhaust or any other exhaust system.
• The exhaust outlet must vent directly to atmosphere.
• Adequate clearance must be kept around the
exhaust system to prevent interference with important
functional parts of the boat, e.g. steering or throttle
cables.
• Route the flexible exhaust giving clearance and
consideration to heat sensitive components such as
fuel lines, electrical cables, etc.
• Ensure the support brackets supplied are used to
secure the exhaust and avoid damage by vibration.
• Position the hull fitting so that either the heater
combustion air or other inlets cannot draw in exhaust
fumes.
• Ensure that the position of the hull fitting allows fumes
to exit freely and not affect nearby surfaces, e.g.
fenders, ropes or mouldings.
• To avoid water ingress, the hull fitting must be at
least 300mm above the waterline and a suitable bend
formed in the exhaust to prevent water collecting in
the exhaust.
5
Min
300mm
Optional exhaust bend and drain coil pictured
Figure 6