2.5 Internal wire Diagram
ground
ignition poles
3. UNIT INSTALLATION
3.3 Installation Modes
The combustion air intake grille must locate in a well-ventilated place. To prevent corrosion, it is necessary
that the combustion air is free of aggressive substances. Aggressive substances are halogenated hydrocarbons
which contain chlorine or fluorine. These substances are found in solvents, paints, adhesives, gasses or
liquid-propellants and household cleaners. If these conditions are not able to guarantee, another
place should be chosen for the air intake.
DC fan
proportional valve
switch valve
outlet NTC
ground
8
power
to display
over heating switch
inlet NTC
water flow sensor
flame detect
wind pressure sensor
V.3