5
GN3
Technical brief (fig. 3)
FEATURES
Fig. 3
Key
1. Electronic plant (optional)
2. 1st burner stage operation hour counter
3. 2nd burner stage operation hour counter
4. Burner inhibition warning light
5. Boiler thermometer
6. Safety thermostat
7. Burner switch and warning light
8. 2nd burner stage adjuster thermostat
9. 1st burner stage adjuster thermostat
10. Pressure tap connection in combustion chamber
11. Porthole to inspect the flame
a1. Flow C.H. ND 80 - 3" Gas
a2. Return C.H. ND 80 - 3" Gas
250
11
10
6
2
1
5
7
8
9
3
4
A1
A2
855
88.5
690
A
437
1278
850
1
180
193
Model
GN3 06
GN3 07
GN3 08
GN3 09
GN3 10
GN3 11
GN3 12
GN3 13
GN3 14
Model
GN3 06
GN3 07
GN3 08
GN3 09
GN3 10
GN3 11
GN3 12
GN3 13
GN3 14
116
130
144
158
172
186
197
211
225
Water
content
dm
3
6
7
8
9
10
11
12
13
14
Elements
n
°
150
175
200
225
250
275
300
325
350
Min.
163
190
217
244
271
298
325
352
379
Min.
181.1
211.1
241.1
271.1
301.1
331.1
361.1
391.1
421.1
Min.
Heat and D.H.W.
(Output)
Heat and D.H.W.
(Net) (Gas+Oil)
Heat and D.H.W.
(Gross) (Gas)
4
4
4
4
4
4
4
4
4
Working
pressure
bar
780
890
1000
1110
1220
1330
1440
1550
1660
A
mm
113
120
145
170
195
220
245
270
297
Combustion
chamber
volume
dm
3
0.93
1.20
1.45
1.80
2.00
2.50
3.00
3.60
4.60
Pressure
combustion
chamber
∆
p mbar
668
756
852
948
1044
1140
1236
1332
1428
Shell
weight
kg.
Water
load
loss
75
70
78
87
85
92
100
105
110
∆
p 15 mbar
255.5
297.7
340
382.2
424.4
466.6
508.8
551.1
593.3
Max.
230
268
306
344
382
420
458
496
534
Max.
210
245
280
315
350
385
420
455
490
Max.
