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2.6
TABLE II: GAS TECHNICAL DATA, PRESSURE, NOZZLES, BURNERS, PILOT AND IDLE SCREW
UNIT TYPE: GBR9T - GBRA9T - GBRVI9T - GBRAVI9T
COUNTRY
NOZZLE
CATEGORY
ENG., ICEL., DENM.,
FIN., SWED., PORT.,
2H
GREECE, IRELAND
NETHERLANDS
2L
ICEL., DENMARK,
3B/P
FINLAND, SWEDEN
GREECE
3+
3P
NORWAY
ENGLAND, IRELAND
3P
PORTUGAL
ENGLAND,
3P
NETHERLANDS
R.o.A. = Regulation of primary air
* Pressure regulator excluded
TABLE II: GAS TECHNICAL DATA, PRESSURE, NOZZLES, BURNERS, PILOT AND IDLE SCREW
UNIT TYPE: GBR9T-25 - GBRA9T-25 - GBRVI9T-25 - GBRAVI9T-25
COUNTRY
NOZZLE
CATEGORY
ENG., ICEL., DENM.,
FIN., SWED., PORT.,
2H
GREECE, IRELAND
NETHERLANDS
2L
ICEL., DENMARK,
3B/P
FINLAND, SWEDEN
GREECE
3+
NORWAY
3P
ENGLAND, IRELAND
3P
PORTUGAL
ENGLAND,
3P
NETHERLANDS
R.o.A. = Regulation of primary air
* Pressure regulator excluded
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.
GB
GAS
INCOMING GAS
TYPE
PRESSURE mbar
Nom.
Min.
Max.
G 20
20
17
25
G 25
25
20
30
G 30*
25
35
29
G 31
G 30*
29
20
35
45
G 31
37
25
G 31*
30
25
35
45
G 31*
37
25
G 31*
50
42,5
57,5
(1) Including the pilot thermal capacity approx. 200W. Nozzle marking Ø 1/100
K = Short nozzle l = 15 mm
GAS
INCOMING GAS
TYPE
PRESSURE mbar
Max. Ø mm. Type
Min.
Nom.
G 20
20
17
25
G 25
25
20
30
G 30*
29
25
35
G 31
35
G 30*
29
20
G 31
37
25
45
G 31*
30
25
35
25
45
G 31*
37
G 31*
50
42,5
57,5
(1) Including the pilot thermal capacity approx. 200W. Nozzle marking Ø 1/100
K = Short nozzle l = 15 mm
BURNER
BY-PASS
Ø mm.
Ø mm. Type
R.o.A.
STAMPED
STAMPED
X mm.
370 L
-
-
415 L
25
-
225/300 W
-
-
225/300 W
-
-
230/300 W
-
-
225/300 W
-
-
205/300 W
27
-
L = Long nozzle=25 mm
BURNER
BY-PASS
Ø mm.
R.o.A.
STAMPED
STAMPED
X mm.
400 W
-
-
-
-
-
235/300 W3
-
-
235/300 W3
-
-
-
-
-
235/300 W3
-
-
-
-
-
L = Long nozzle=25 mm
- 18 -
THERMAL
NOZZLE GAS
PILOT
CAPACITY
PRESSURE
NOM. kW (1)
"TARGHET"
Max.
Min.
100%
STAMPED
mbar
mbar
36
13,8
-
21
36
11,5
-
21
19
27,5
-
21
27,5
19
-
21
35,2
28,4
19
-
21
35,2
19
-
21
48,1
19
-
21
THERMAL
NOZZLE GAS
CAPACITY
PILOT
PRESSURE
NOM. kW (1)
"TARGHET"
Max.
Min.
100%
STAMPED
mbar
mbar
36
13,5
-
24
-
-
-
-
19
27,4
-
24
27,4
19
-
24
35,0
-
-
-
-
35,0
19
-
24
-
-
-
-
GAS
CONSUMPTION
(15°C)
P.T. Min.
l/h
g/h
ca. 33%
-
2222
-
-
2585
-
1656
651
-
753
1431
651
1656
-
859
1631
859
1631
-
859
1631
-
859
1631
-
F = Fixed
GAS
CONSUMPTION
(15°C)
P.T. Min.
l/h
g/h
ca. 33%
-
2540
-
-
-
-
744
1893
-
861
1635
744
1893
-
982
1864
-
-
-
982
1864
-
-
-
-
F = Fixed
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