Immergas MAGIS COMBO - 3.28 VARIABLE HEAT OUTPUT.; 3.29 COMBUSTION PARAMETERS.

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INSTALLERUSERMAINTENANCE TECHNICIAN
3.29 COMBUSTION PARAMETERS.
Combustion parameters: measuring conditions
of useful eciency (ow temperature/return
temperature= 80 / 60 °C), ambient temperature
reference = 15°C.
METHANE (G20) BUTANE (G30) PROPANE (G31)
DHW HEAT INPUT
FAN SPEED
VARIATION
INTERVAL
∆P VENTURI
FAN SPEED
VARIATION
INTERVAL
∆P VENTURI
FAN SPEED
VARIATION
INTERVAL
∆P VENTURI
(kW) (rpm) (mbar) (mm H
2
O) (rpm) (mbar) (mm H
2
O) (rpm) (mbar) (mm H
2
O)
MAX. 28.1 5100 - 5400 6.62 67.5 4800 - 5100 6.32 64.5 5400 - 5600 8.01 81.7
METHANE (G20) BUTANE (G30) PROPANE (G31)
HEAT
POWER
HEAT
POWER
MODULATION
GAS FLOW RATE
BURNER
MODULATION
GAS FLOW RATE
BURNER
MODULATION
GAS FLOW RATE
BURNER
(kW) (kcal/h) (%) (m
3
/h) (%) (m
3
/h) (%) (m
3
/h)
27.3 23478
D.H.W.
99 2.98 99 2.22 99 2.19
27.0 23220 97 2.95 97 2.20 97 2.17
26.0 22360 94 2.85 94 2.13 94 2.09
25.0 21500 89 2.74 89 2.05 89 2.01
24.0 20640
CEN.
HEAT.
+
D.H.W.
85 2.64 85 1.97 85 1.94
23.0 19780 80 2.53 80 1.89 80 1.86
22.1 19025 75 2.43 75 1.81 75 1.78
21.0 18060 70 2.31 70 1.72 70 1.69
20.0 17200 66 2.20 66 1.64 66 1.61
19.0 16340 61 2.09 61 1.56 61 1.53
18.0 15480 56 1.98 56 1.47 56 1.45
17.0 14620 52 1.87 52 1.39 52 1.37
16.0 13760 47 1.76 47 1.31 47 1.29
15.0 12900 43 1.65 43 1.23 43 1.21
14.0 12040 39 1.54 39 1.15 39 1.13
13.0 11180 34 1.43 34 1.07 34 1.05
12.0 10320 30 1.33 30 0.99 30 0.97
11.0 9460 26 1.22 26 0.91 26 0.89
10.0 8600 22 1.11 22 0.83 22 0.81
9.0 7740 18 1.00 18 0.75 18 0.73
8.0 6880 14 0.89 14 0.66 14 0.65
7.0 6020 9 0.78 9 0.58 9 0.57
6.0 5160 5 0.67 5 0.50 5 0.49
5.0 4300 3 0.56 3 0.42 3 0.41
4.8 4128 1 0.54 1 0.40 1 0.40
G20 G30 G31
Supply pressure mbar (mm H
2
O) 20 (204) 30 (306) 37 (377)
Gas nozzle diameter mm 5.60 3.90 4.10
Venturi diameter mm 19.00 19.00 19.00
N° x Ø venturi holes mm 4 x 4.00 4 x 4.00 4 x 4.00
Flue ow rate at nominal heat output kg/h 44 40 45
Flue ow rate at min heat output kg/h 9 8 9
CO
2
at Nom./Min. Q. ± 0,2 % 9.60 / 8.60 12.30 / 11.20 10.60 / 10.00
CO with 0% O
2
at Nom./Min. Q. ppm 250 / 7 697 / 10 222 / 6
NO
X
with 0% O
2
at Nom./Min. Q. mg/kWh 52 / 17 137 / 38 40 / 21
Flue temperature at nominal output °C 70 76 70
Flue temperature at minimum output °C 57 63 59
3.28 VARIABLE HEAT OUTPUT.
N.B.: the power data in the table has been ob-
tained with intake-exhaust pipe measuring 0.5 m
in length. Gas ow rates refer to net heating value
below a temperature of 15°C and at a pressure
of 1013 mbar.