Operating Instructions and Installation Instructions

Edition: 02 / 2015 Page 9 / 56
VARMAX TWIN - Installation, Use and Maintenance
Refer to the VARMAX generator's installation, use and maintenance manual.
3.3. Combustion at 15°C and 1013 mbar
MODELS
550 640 780 900
Nominal power Pn (80/60°C) kW 536 624 762 878
Nominal power when condensing Pn
(50/30°C)
kW 580 676 830 956
Rated heat input Qn kW 550 640 780 900
Min heat input Qmin kW 66 66 87 87
Gas fl ow rate at Pn (15 °C) * m
3
/h 58.2 67.72 82.6 95.2
CO
2
value range %
at Qmin: 8.3 % < CO
2
< 8.7 %
at Qmax: 8.8 % < CO
2
< 9.2 %
Exhaust mass fl ow rate at Qn / Qmin
(80/60°C) *
g/s
240.1 and
31
257.7 and
30.9
352 and 43 398 and 44
Exhaust mass fl ow rate at Qn / Qmin
(50/30°C) *
g/s
225.9 and
26
239.5 and
26.6
327 and 41 378 and 42
Exhaust temperature at Qn / Qmin
(80/60°C) *
°C 61 and 54.7
60.8 and
55.1
60.3 and
54.5
62.1 and
55.6
Exhaust temperature at Qn / Qmin
(50/30°C) *
°C
35.4 and
30.7
37.1 and 31 36 and 29.3 36 and 30.4
Firebox pressure at nominal Qcal
(B23)
Pa 132 162 152 203
Exhaust outlet interior diameter mm 250 250 300 300
Maximum allowable nozzle pressure
(B23P) at Qn / Qmin (80/60°C)*
Pa 127 and 3 151 and 3 177 and 3 200 and 3
Maximum allowable nozzle pressure
(B23P) at Qn / Qmin (50/30°C)*
Pa 104 and 3 123 and 3 149 and 3 178 and 3
Combustion air fl ow rate at Qn *
(15°C)
m
3
/h 704.8 820.2 999.6 1153.4
NOx class 5
Smoke removal and air inlet type
classifi cations
B23, B23P
* values corresponding to a G20 setting.
3.2. Doorway