Variable Heat Output; Combustion Parameters - Immergas VICTRIX EXA 24 X 1 ErP Instruction And Recommendation Booklet

3.18 VARIABLE HEAT OUTPUT.

N.B.: the pressures indicated in the table repre-
sent the di erences of pressures at the ends of
the Venturi mixer and can be measured from the
pressure points in the upper part of the sealed
chamber (see pressure test 16 and 17 Fig. 1-30).
e adjustments must be made with a digital
di erential pressure gauge with scale in tenths
THERMAL POWER
(kW) (kcal/h)
MAX. 23.7 20382
OUTPUT 5.5 4730

3.19 COMBUSTION PARAMETERS.

Gas nozzle diameter (Gas valve 848)
Supply pressure
Flue ow rate at nominal heat output
Flue ow 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
of a mm or Pascal.
has been obtained with an intake-exhaust pipe
measuring 0.5 m in length. Gas ow rates refer
to the lower calori c value at a temperature of
15°C and at a pressure of 1013 mbar.
pressure values refer to the use of gas at a tem-
perature of 15°C.
METHANE (G20)
BURNER GAS PRESS. BURNER
FLOW RATE NOZZLES
3
(m /h) (mbar) (mm H
2.56 2.41 24.6
0.60 0.17 1.7
e power data in the table
e burner
BUTANE (G30)
BURNER GAS PRESS. BURNER
FLOW RATE NOZZLES
O) (kg/h) (mbar) (mm H
2
1.91 2.57
0.45 0.18
G20
mm 7.00
mbar (mm H O) 20 (204)
2
kg/h 38
kg/h 10
% 9.40 / 8.60
ppm 165 / 5
mg/kWh 40 / 25
50
°C
°C 45
32
PROPANE (G31)
BURNER GAS PRESS. BURNER
FLOW RATE NOZZLES
O) (kg/h) (mbar)
2
26.2 1.88 2.99
1.8 0.44 0.21
G30
4.80
29 (296)
35
9
12.00 / 11.40 10.80 / 10.40
470 / 14
94 / 55
54
50
(mm H O)
2
30.5
2.1
G31
5.00
37 (377)
38
9
205 / 9
35 / 20
51
48