Eberspracher Airtronic D2 Installation Manual - Air Ducting
Air ducting
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14
2
3
4
5
6
7
4
8
9
10
4
11
2
1
Example: Airtronic D4 90mm ducting 2 outlet (Open / Closeable)
2
The illustration shows both the primary and secondary
parts of the duct system. The primary duct system
contains all components from the heater inlet duct
to the permanently open outlet. The secondary duct
system contains all the components from a Y piece
to permanently open outlets. Any Y piece connection
and components that lead to a closeable outlet must
be ignored and not included in the component rating
calculation. In this case, the remainder of the duct
system is calculated as a primary duct system.
5
3
4
7
4
7
4
2
Open
11
Primary duct system
3.5m
Closeable
Primary duct system
3m
Secondary duct system
3m
3m
Open
Open
2
2
4
4
7
7
4
2
5
3
Example: Airtronic D4 90mm ducting 2 outlet (Open / Open)
Figure 5
Heater Components
Rating Total = 9.6
Rating Total = 8.3
When installing the inlet and hot air ducts, the ducting
system should contain the minimum amount of bends
and be as straight as possible. However, on a boat this
is rarely achievable. To assist the design of the duct
system, and to ensure the heater does not overheat,
each heater model has been given a rating factor which
must not be exceeded.
To illustrate this, the following is shown below.
Figure 4