Variable Heat Output; Combustion Parameters - Immergas HERCULES SOLAR 26 2 ErP Instruction And Recommendation Booklet

3.17 VARIABLE HEAT OUTPUT.

N.B.: the pressures indicated in the table repre-
sent the differences of pressures at the ends of
the Venturi mixer and can be measured from the
pressure points in the upper part of the sealed
THERMAL THERMAL
POWER POWER
(kW) (kcal/h)
26,0 22360
25,0 21500 D.H.W.
24,0 20640
23,6 20253
22,0 18920
21,8 18733
20,0 17200
19,0 16340
18,0 15480
17,0 14620
16,0 13760
15,0 12900
CEN.
14,0 12040
HEAT.
13,0 11180
+
12,0 10320
D.H.W.
11,0 9460
10,0 8600
9,0 7740
8,0 6880
7,0 6020
6,0 5160
5,0 4300
4,0 3440
3,0 2580

3.18 COMBUSTION PARAMETERS.

Supply pressure
Gas nozzle diameter
Flue flow rate at nominal heat output
Flue flow rate at min heat output
CO at Q. Nom./Min.
2
CO with 0% O at Nom./Min. Q. Nom./Min.
2
NO at 0% of O at Q. Nom./Min.
X 2
Flue temperature at nominal output
Flue temperature at minimum output
chamber (see pressure test 36 and 37 Fig. 1-33).
The adjustments must be made with a digital
differential pressure gauge with scale in tenths
of a mm or Pascal. The power data in the table
has been obtained with an intake-exhaust pipe
METHANE (G20)
BURNER GAS PRESS. BURNER
FLOW RATE NOZZLES
(m /h) (mbar) (mm H O)
3
2
2,85 5,80 59,1
2,74 5,39 54,9
2,62 4,99 50,9
2,57 4,82 49,1
2,40 4,25 43,4
2,38 4,18 42,6
2,18 3,58 36,6
2,07 3,27 33,4
1,96 2,98 30,4
1,86 2,70 27,5
1,75 2,43 24,8
1,64 2,18 22,2
1,54 1,94 19,8
1,43 1,71 17,5
1,32 1,50 15,3
1,21 1,31 13,3
1,11 1,12 11,4
1,00 0,95 9,7
0,89 0,79 8,1
0,78 0,65 6,6
0,67 0,51 5,2
0,56 0,40 4,0
0,45 0,29 3,0
0,34 0,20 2,0
mbar (mm H
measuring 0.5 m in length. Gas flow rates refer
to the lower calorific value at a temperature of
15°C and at a pressure of 1013 mbar. The burner
pressure values refer to the use of gas at a tem-
perature of 15°C.
BUTANE (G30)
BURNER GAS PRESS. BURNER
FLOW RATE NOZZLES
(kg/h) (mbar) (mm H
2,13 5,85 59,7
2,04 5,43 55,4
1,96 5,03 51,3
1,92 4,86 49,5
1,79 4,29 43,7
1,77 4,21 42,9
1,63 3,61 36,8
1,55 3,29 33,6
1,47 2,99 30,5
1,39 2,71 27,6
1,31 2,44 24,8
1,23 2,18 22,2
1,15 1,94 19,7
1,07 1,71 17,4
0,99 1,49 15,2
0,91 1,29 13,2
0,83 1,10 11,2
0,75 0,93 9,4
0,66 0,76 7,8
0,58 0,61 6,3
0,50 0,48 4,9
0,42 0,35 3,6
0,34 0,25 2,5
0,25 0,15 1,5
G20
O) 20 (204)
2
mm 5.60
kg/h 42
kg/h 5
% 9.50 / 9.00
ppm 235 / 3
mg/kWh 44 / 12
°C 62
°C 49
43
PROPANE (G31)
BURNER GAS PRESS. BURNER
FLOW RATE NOZZLES
O) (kg/h) (mbar) (mm H
2
2,09 7,61
2,01 7,08
1,93 6,56
1,89 6,34
1,76 5,61
1,74 5,51
1,60 4,74
1,52 4,33
1,44 3,94
1,36 3,58
1,28 3,23
1,21 2,89
1,13 2,58
1,05 2,28
0,97 2,00
0,89 1,73
0,81 1,48
0,73 1,25
0,65 1,03
0,57 0,83
0,49 0,65
0,41 0,48
0,33 0,33
0,25 0,20
G30 G31
29 (296) 37 (377)
4.00 4.00
38 43
5 5
12.30 / 11.80 10.60 / 10.10
680 / 4 220 / 4
148 / 26 35 / 13
68 62
54 49
O)
2
77,6
72,2
66,9
64,7
57,2
56,2
48,3
44,2
40,2
36,5
32,9
29,5
26,3
23,2
20,4
17,7
15,1
12,7
10,5
8,5
6,6
4,9
3,4
2,0