Wall-Mounted Open Air Installation Outdoors; Filling The System - Baxi LUNA DUO-TEC IN+ Instruction Manual For Users And Fitters

8.3

WALL-MOUNTED OPEN AIR INSTALLATION OUTDOORS

This boiler can be installed in the open air outdoors with the shelter kit supplied as an accessory.
After deciding the exact location of the boiler, fix the template to the wall. Connect the system to the gas and water inlets present
on the lower bar of the template. Make sure the rear part of the boiler (back) is as parallel as possible to the wall (otherwise, shim
the lower part).
After mounting the boiler on the wall, install the shelter kit following the procedure in the figure. Connect the flue and air ducts,
supplied as accessories, as described in the following sections.
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9.

FILLING THE SYSTEM

The initial filling procedure and resetting the pressure of the system depend on the model of the boiler:
24 -28 MODELS
INITIAL FILLING PHASE
For initial filling of the system, proceed as follows:
• remove the front panel of the boiler;
• check that the automatic air vent valve in the body of the valve of the pump is
open;
• fill the system at the tap in the hydraulic unit (detail "A" in the figure to the side);
• vent all the heating elements concerned;
• check that the pressure displayed on the pressure gauge (detail "B" in the figure
to the side) is 0.8 - 1.5 bar, with the system cold. In case of overpressure, open
the boiler drain valve;
• Close the system filling tap.
SYSTEM PRESSURE RESETTING PHASE
The pressure of the system is automatically reset whenever it drops below ~ 0.8 bar.
The pressure switch requires the filling of water. The text Err 18 is shown on the display of the Room Unit during the filling phase.
The cycle runs for a maximum of ~ 6 minutes. The text Err 19 is shown on the display of the Room Unit if the pressure is not reset
at the end of the filling cycle. The boiler begins a new filling cycle when the fault is reset.
If the fault is caused by blocking of the filling electrovalve, it is possible to proceed manually with the system filling tap.
1.12 -1.24 MODELS
INITIAL FILLING PHASE
For initial filling of the system, proceed as follows:
• remove the front panel of the boiler;
• check that the automatic air vent valve in the body of the valve of the pump is open;
• check that the filling tap in the boiler is always open. Fill the system by turning the screw on the body of the electrovalve
(turn to position "A");
• vent all the heating elements concerned;
• Check that the pressure displayed on the pressure gauge is 0.8 -1.5 bar, with the boiler cold. In case of overpressure, open
the boiler drain valve;
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766012101
7689490.01 (1-09/17)
bis