Gas System Connection; Pressure Check; Adjusting The Minimum Thermal Capacity; Liquid Gas Operation Control - Diamond OPTIMA 700 Instrucciones Para La Instalación, El Uso Y El Mantenimiento

Table II shows the types of gas and pressure for all burners and respective nozzles, the X mm distance for the adjustment of
primary air , the idle screw (bypass), the pilot nozzle, the maximum and minimum pressure at nozzle, the maximum and
minimum thermal capacity, and the gas consumption in l/hr (15°C) or in g/hr in the case of L.P.G.
Attention: If the incoming gas' "dynamic" pressure to the unit is lower than the minimum pressure on Table II, connection is
prohibited; furthermore, the fitter should notify the gas Company that the supply pressure is too low.
N.B.: Should the pressure vary more to than +10% of the nominal pressure, e.g. for G20 - 22mbar, it is advisable to mount a
pressure regulator ahead of the unit in order to guarantee the nominal pressure.
Should the supply pressure exceed the maximum pressure on Table II, e.g. for G20 - 25mbar, notify the gas Company.
Make sure the inlet and nozzle pressures agrees with the values shown on Table II.
2.6.2

PRESSURE CHECK

INCOMING PRESSURE CHECK (Pe) Fig. 2
Pressure is measured with a manometer 0÷80mbar (precision at least 0.1mbar).
The pressure socket Fig. 1 is located on the G 1/2" gas ramp behind the panel; undo the screw (A) of the pressure socket (B),
attach the silicone rubber to the manometer, ignite the burner and take the incoming "dynamic" pressure.
Fasten the screw (A) back with a gas washer (C), check gas sealing with bubble soap.
NOZZLE PRESSURE CHECK (Pi) Fig. 3
The pressure socket is located above the nozzle holder (Fig. 3).
The silicone rubber is prepared for high temperatures and should be protected with tin foil to avoid its burning.
2.6.3

ADJUSTING THE MINIMUM THERMAL CAPACITY

The right minimum for thermal capacity is achieved by means of the bypass idle screw completely opened (100%).
2.6.4

LIQUID GAS OPERATION CONTROL

Check whether the fitted nozzles comply with the indications on Table II.
Check whether the incoming pressure complies with the indications on Table II.
Make sure that the L.P.G. gas system has two pressure regulators of suitable capacity and that the evaporation capacity is
sufficient. See also the publication "Installation Regulations and Characteristics of L.P.G. Systems".
2.6.5

OPERATION CONTROL

- Start the unit in accordance with the use instructions Chap. 5.
- Make sure there are no leaks following the local procedures.
- Check the ignition and interignition of the pilot burner and the main burner.
- Make sure the flue gases are discharged regularly.
- Write on a sticker to be glued to the unit label, for what gas and pressure the unit has been calibrated.
2.7

INTRODUCTION TO USERS

Explain the operation and use of the Tilting bratpan to its user by consulting the manual, and illustrate any changes.
Leave this instruction manual with the user and explain he/she must consult it for any future reference.
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