Eurotec DOMINA 700 Series, Installation, Use And Maintenance Instructions, Page: 14 / 47

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2.6 TABLE II: GAS TECHNICAL DATA, PRESSURE, BURNER NOZZLES, PILOT AND IDLE
SCREW (VALID FOR ALL BURNERS OF THE GRIDDLE PLATES DOMINA 700 SERIES)
2.7 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.
- After connecting to the gas system, check for any leaks in the connecting points with special instruments or with soapy
water.
DISCHARGE OF EXHAUST FLUE PRODUCTS VIA A DRAFT HOOD.
TYPE “A1” UNIT.
The gas unit should be placed beneath a draft hood with its system complying with the Regulations. (This unit needs at least
2cu.m/hr l kW T.C. (Thermal Capacity). Check kitchen ventilation: it should by complying with the Regulations in force.
2.7.1 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!
R.o.A. = Regulation of primary air (1) Including the pilot thermal capacity approx. 200W Nozzle marking Ø 1/100
* Pressure regulator excluded K = short nozzle 15 mm F= fixed
Nation
and
category
Cat.
Nozzle
Type
of
gas
ENG, ICEL, DENIM,
FIN, SWED, PORT,
GREECE, IRELAND
NETHERLANDS
NORWAY
ICEL,
DENMARK, FINLAND,
SWEDEND
NETHERLANDS
IRELAND PORTUGAL
GREECE,
ENGLAND
2H
2L
3B/P
3+
Gas pressure
upstream
mbar
Nom. Min. Max.
20
25
29
29
37
17
20
25
20
25
25
30
35
35
45
BURNER
Ø mm. Type
MARKED
R.d.A.
X mm.
BY-PASS
(22 S)
Ø mm.
MARKED
PILOT
“targhet”
MARKED
175 K
175/250 K
115 K
115 K
20
20
20
20
95
95
65
65
27
27
19
19
Nozzles
gas
pressure
25ST
Max.
mbar Min.
mbar
Nominal
Thermal
kW (1)
100% T.C.
Min.
Gas
consumption
15°C
l/h g/h
1,4
1,8
1,9
1,9
3,0
5,5
5,5
5,5
5,5
1,7
1,7
1,7
1,7
-
-
434
375
434
429
582
677
170
197
171
225
G20
G25
G30*
G31
G30*
G31
NOTE:
*
the values must be multiplied by 2 in case of GFT777 and by 3 in case of GFT11777.
18,9
23,3
28,7
28,7
36,6