Air Ducting - Dometic HB 2500 Operation, Maintenance And Installation Manual

Information on installation 2

2.6. Air ducting

GB
Make the air ducting with trade parts that are not supplied.
It is recommended to use cardboard pipe for air conditioning
with an aluminium core and external covering of PVC with an
inside nominal diameter of 60 mm. This pipe has an outside
diameter of 65mm.
The ventilation pipes are joined by pressing them together
thanks to the tapered hole on the air outlet.
The pipes can be connected either on the outlet on the coil
side or, by removing the guard and closing the front holes, on
the side outlet.
To achieve the best effi ciency it is recommended to:
- lay the air pipes so they are as short and straight as pos-
sible;
- not use pipes any longer than 5m;
- not place the pipes near sources of heat.
The recirculation air is drawn in through a grille or through
other openings with a total cross-section of at least 300 cm2.
The recirculation air opening must be made near the machine;
if this is not the case then make sure that the air fl ow cannot
be obstructed by anything (if necessary, create an air duct be-
tween the opening and the machine).
The recirculation air must be taken from inside the passenger
compartment; if it were taken from the outside then machine
effi ciency would suffer.
Operating instructions for users
21 HB2500