Laws, Regulations And Technical Directives To Be Complied With; Installation Place; Positioning; Water Connections - Diamond OPTIMA 700 Instrucciones Para La Instalación, El Uso Y El Mantenimiento

2.2

LAWS, REGULATIONS AND TECHNICAL DIRECTIVES TO BE COMPLIED WITH

The following indications should be observed during installation:
- Accident and fire regulations in force
- Prescriptions by the Gas Supply Company, which should issue an authorisation before installation.
- Instructions for the "Installation of gas equipment"
- Hygienic regulations.
2.3

INSTALLATION PLACE

- The unit should be installed in adequately ventilated places. (This unit requires a draft of at least 2 cu.m/hr x kW P.T.
(Thermal capacity).
- Install the equipment in compliance with the safety rules applicable in the country where the equipment is installed
2.4

POSITIONING

- The various units may be installed individually or together with other units of our range.
- This unit is not suitable for encasing.
- The distance between side walls must be a minimum of 10 cm; should the distance be less or the wall or floor material be
flammable, it is essential to use a thermal insulator.
2.5

WATER CONNECTIONS

In order to perform a correct installation, it is essential that :
- The unit be supplied with drinkable water.
- The water inlet pipe be connected to water main by check-valves to be shut off when the unit is not operating or when
servicing it.
- Between check-valves and the pipe connecting the folding, mechanical filter be installed in order to prevent any ferrous
slag to be introduced, which may corrode by oxidation and in the long run oxidise the folding itself. It is advisable,
however, before connecting the last piping section the folding fittings, to drain a certain amount of water in order to clear
the pipes from any ferrous slag.
2.6 GAS SYSTEM CONNECTION
- The unit should be supplied with gas having the characteristics and the pressure shown on Table II.
- The gas pressure is measured at the initial pressure outlet with the burner on (see Fig. 1).
- The unit is tested and fitted to operate with natural gas H G20 - 20mbar.
* N.B. Should the supply pressure vary more than +10% of the nominal pressure, it is advisable to install a pressure
regulator ahead of the unit to guarantee the nominal pressure.
- Gas supply connection should be performed by means of metal piping of an appropriate cross section and an approved
shutoff cock should be fitted at source.
- Having connected the gas supply, you should make sure no leaks exist at the joints by checking with bubble soap.
DISCHARGE OF EXHAUST FLUE PRODUCTS.
The units should be installed in premises suitable for the discharge of flue products, which must occur in compliance with the
installation instructions. Our equipment (see Table II for technical data) is classified as:
GAS UNITS TYPE A
1
They are not suitable to be connected to a flue discharge control. The gas unit should be positioned beneath a draft hood with
its system complying with the Regulations. (This unit needs at least 2cu.m/hr • kW T.C. (Thermal Capacity).
Check kitchen ventilation: it should by complying with the Regulations in force.
2.6.1

HOW TO ACHIEVE THE NOMINAL THERMAL CAPACITY

Check whether the unit is fitted for the gas type, pressure and category corresponding with the main gas supply.
Indication shown on packing and/or the label of the unit.
If the unit is fitted for another gas type or pressure, you need to first effect a change over to the other gas type.
See Table II for the nozzle, the idle screw (bypass), the primary air regulation, (X mm), the pilot nozzle and the nozzle pressure
for the main burner.
N.B.: The names of nozzles "2H" and "3+" are shown on the left side of Table II.
2H= G20 - 20mbar
3+= G30 - 29mbar and/or G31 - 37mbar coupled gas and pressure.
In our sector, we almost always have to deal with G31 - 37mbar!
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GB