18
STEkW ed 12/06
EOLO Maior kW
Technical Documentation
Technical Documentation
Gas adjustments.
The maximum and the minimum gas pressure adjustments
can be made on the gas valve respecting the values shown in
the heat outputs table, in function of the model and the gas
type
(see technical data).
Measurements are made using a differential manometer
connecting it's positive pressure point to the gas valve outlet
(4) and it's negative pressure point to the positive pressure
point in the flange with traps located at the top of the sealed
chamber
(see figure).
Legend:
1 - Modulation coil
2 - Minimum output adjustment
3 - Maximum output adjustment nut
4 - Gas valve outlet pressure point
5 - Gas valve inlet pressure point
6 - Protection cap
Valve SIT 845
SIT 845 gas valve
Adjustment maximum pressure.
Run off some domestic hot water after having set its tempera-
ture selector on maximum.
Turn the brass nut (3) clockwise to increase pressure to the
burner and counter clockwise to reduce it.
Adjustment minimum pressure
(to be done after the adjustment maximum pressure).
After having cut electrical power to the modulation coil, turn
the screw (2) clockwise to increase pressure to the burner and
anticlockwise to reduce it.
Gas conversion.
There are special kits to adapt the boiler to a gas type different
to the one for which the boiler is set as standard
(natural gas
or LPG).
Conversion consists in changing the burner nozzles and moving
the gas type selector “NATURAL GAS – LPG” (S8) on the
integrated board.
Maximum and minimum pressures are then regulated on the
gas valve as described above.
The maximum and minimum output setting in the central
heating phase can be set via the parameters
(see
integrated
board operation).
The burner ignition pressure is not regulated
because the
type of board operation
does not require such a setting
(see
integrated board operation).
Summary of Contents for EOLO Maior kW
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