17
fig. 17a
fig. 17b
¨
Maximum operating gas pressure
adjustment:
- Operate the water heater at maximum load (use
Parameter menu detailed in service manual).
- Connect the tube of a clocking gas meter to outlet
pressure measurement point (2) after loosening the
plastic adjusment cover (fig.18).
- Turn the brass screw (4) clockwise to increase the
gas outlet pressure (burner pressure) and turn to
counterclockwise to decrease the gas outlet
pressure.
- Check gas pressure measurements on the gas
meter to satisfy the desired value. In LPG
operation, maximum gas adjusment screw (4) is
tigtened to the end for 28 mbar supply pressure.
Fig.17c
fig.18
¨
Minimum operating gas pressure adjustment:
- Operate the water heater at minimum load (use Parameter menu detailed in service manual).
- Connect the tube of a clocking gas meter to outlet pressure measurement point (2).
- Turn the plastic srew (3) clocwise to increase the outlet gas pressure and turn the plastic screw
counterclockwise to decrease the outlet gas pressure.
- Ensure that the outlet pressure is correctly adjusted, check minimum and maximum setting several
times, then tighten the protective plastic (yellow) cover (fig.18).
- Reassemble the control panel, Plastic lower plate and front panel.
