Baxi LUNA HT 1.850 Installers And Users Instructions page 17

IMPORTANT -
Make sure there is a minimum downward slope of 1 cm per metre of duct towards the boiler. Make
sure the flue and air ducts are firmly fixed to the wall with suitable brackets.
IMPORTANT:
if fitting a single exhaust flue duct, ensure it is adequately insulated (e.g.: with glass wool) wherever
the duct passes through building walls.
For detailed instructions concerning the installation of fittings refer to the technical data accompanying the fittings.
12.1 FAN RPM UPDATING DEPEND OF PIPES LENGHT (E.G. FIGURE 7)
To ensure the correct rated heat input to the maximum and minimum heat input, it is necessary to update the speed
(rpm) of the fan, it depends on the lenght of the pipes (par. 12), in accordance with the installation of flue and air pipes as
indicated in the tables below. The factory-set value is referred to the minimum length of flue pipe (0÷2 m for concentric,
0÷6 m for twin). To carry such updating, changing the speed of the fan (rpm) at the maximum and minimum heat input,
refer to par. 15.
INSTRUCTIONS PERTAINING TO THE INSTALLER
Separated horizontal flue terminals installation options
(L1 + L2) max = 27 m
The maximum length of the
suction duct must be 7 metres.
17
910.024.1 - EN (AUS)