16
fig.15
Frost Protection
The appliance goes on and off automatically depending on actual water temperature values
measured by the water temperature sensor for protecting water circuit against freezing.
- If the water sensor measures a low water temperature in the system (less than 5 °C ), the frost
protection is activated. When the water temperature goes above 15 °C (measured on the sensor), the
frost protection is deactivated.
: The electricity and gas valve must be open to activate the frost
protection.
GAS TYPE CONVERSION
: Gas type conversion from LPG to natural gas or from natural gas to LPG
must be carried out only by qualified person.
Gas Pressure Adjustments
The operating pressure varies depending on the type of gas. Therefore, minimum and maximum
operating gas pressure must be set by means of the adjusment screws that are on top of the gas
valve. The heat output directly depends on the operating pressure. When the operating gas pressure
range is adjusted, minimum and maximum heat output is also adjusted (mechanically).
- First, operate the water heater at maximum load while adjusting maximum operating pressure and
operate the appliance at minimum load while adjusting minumum operating pressure. To reach the
gas Valve:
- Undo screw (A) securing the plastic lower
plate (B) then slide forward and remove it.
(fig.16)
- Remove the front panel, slide the plastic
control panel by pressing the secure tabs (1) to
the both sides and, pull downward the control
panel (fig.17a)
- Undo three screws (3) which are located on
the front panel and push the front panel up and
remove.(fig.17b - 17c) Pull the control panel
downward to reach the gas valve.
- The inlet gas pressure must be the nominal
pressure while performing the adjustment.
fig. 16
3