22
INSTALLERUSER
MAINTENANCE TECHNICIAN
3.15 VARIABLE HEAT POWER.
N.B.: the pressures indicated in the table repre-
sent the dierences of pressures at the ends of
the Venturi mixer and can be measured from
the pressure point in the upper part of the sealed
chamber (see pressure test 15 and 16 Fig. 1-11).
e adjustments must be performed using a
digital dierential manometer with a scale in
tenths of mm or Pascal. e power data in the
table has been obtained with intake-exhaust pipe
measuring 0.5 m in length. Gas ow rates refer
to heating values below a temperature of 15°C
and at a pressure of 1013 mbar. Burner pressure
values refer to use of gas at 15°C.
NG (G20) Universal LPG (G31)
HEAT
OUTPUT
GAS
CONS.
BURNER
GAS
FLOW RATE
BURNER
NOZZLES
PRESSURE
BURNER
GAS
FLOW RATE
BURNER
NOZZLES
PRESSURE
(kW) (MJ/h) (m
3
/h) (kPa) (kg/h) (kPa)
12,0 49,2 1,30 0,52 0,96 0,57
11,0 45,0 1,19 0,44 0,87 0,48
10,0 40,8 1,08 0,37 0,79 0,41
9,0 36,8 0,97 0,30 0,71 0,34
8,0 32,7 0,87 0,24 0,64 0,28
7,0 28,7 0,76 0,19 0,56 0,22
6,0 24,8 0,66 0,15 0,48 0,17
5,0 20,8 0,55 0,11 0,40 0,12
4,0 16,8 0,44 0,07 0,33 0,08
3,0 12,7 0,34 0,05 0,25 0,05
2,3 9,8 0,26 0,03 0,19 0,03
NG (G20) Universal LPG (G31)
HEAT
OUTPUT
GAS
CONS.
BURNER
GAS
FLOW RATE
BURNER
NOZZLES
PRESSURE
BURNER
GAS
FLOW RATE
BURNER
NOZZLES
PRESSURE
(kW) (MJ/h) (m
3
/h) (kPa) (kg/h) (kPa)
30,0 121,6 3,22 0,41 2,36 0,49
29,0 117,5 3,11 0,39 2,28 0,46
28,0 113,4 3,00 0,36 2,20 0,43
27,0 109,3 2,89 0,34 2,12 0,40
26,0 105,2 2,79 0,32 2,05 0,37
25,0 101,1 2,68 0,30 1,97 0,35
24,0 97,1 2,57 0,28 1,89 0,32
23,0 93,1 2,46 0,26 1,81 0,30
22,0 89,0 2,36 0,24 1,73 0,28
21,0 85,0 2,25 0,22 1,65 0,25
20,0 81,0 2,15 0,20 1,58 0,23
19,0 77,0 2,04 0,19 1,50 0,21
18,0 73,0 1,93 0,17 1,42 0,19
17,0 69,0 1,83 0,16 1,34 0,17
16,0 65,0 1,72 0,14 1,26 0,16
15,0 61,0 1,62 0,13 1,19 0,14
14,0 57,0 1,51 0,11 1,11 0,12
13,0 53,0 1,40 0,10 1,03 0,11
12,0 49,0 1,30 0,09 0,95 0,09
11,0 45,0 1,19 0,08 0,87 0,08
10,0 41,0 1,09 0,06 0,80 0,07
9,0 36,9 0,98 0,05 0,72 0,06
8,0 32,9 0,87 0,04 0,64 0,05
7,0 28,8 0,76 0,03 0,56 0,04
6,0 24,8 0,66 0,03 0,48 0,03
5,7 23,6 0,62 0,02 0,46 0,03
INTEC 12 SYSTEM EXTERNAL.
INTEC 30 SYSTEM EXTERNAL.