A.O. Smith TWI 35-200, Installation, User And Service Manual

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13.3 Gas details
Description Unit TWI 35-200 TWI 45-200
Gas category 2H (G20)
Diameter of the venturi
restrictor mm - -
Nominal Load (gross) kW 38.9 50.0
Nominal output kW 35.9 46.2
Supply pressure mbar 20 20
CO
2
(full load) vol% 9.0 ± 0.5 9.0 ± 0.5
O
2
(full load) vol% 4.8 ± 0.9 4.8 ± 0.9
Gas consumption
(1)
m
3
/h
3.7 4.8
NO
x
emission mg/kWh GCV 53 53
Mass flow rate flue gases
(minimal load) kg/h 42 42
Mass flow rate flue gases
(nominal load) kg/h 63 81
Flue gas temperature
(nominal load) ºC 65 75
Gas category 3P (G31)
Diameter of the venturi
restrictor mm 6.00 6.00
Nominal Load (gross) kW 38.0 48.9
Nominal output kW 35.9 46.4
Supply pressure mbar 37 37
CO
2
(full load) vol% 10.0 ± 0.5 10.0 ± 0.5
O
2
(full load) vol% 5.7 ± 0.8 5.7 ± 0.8
Gas consumption kg/h 2.7 3.5
NO
x
emission mg/kWh GCV 61 61
Mass flow rate flue gases
(minimal load) kg/h 43 43
Mass flow rate flue gases
(nominal load) kg/h 64 83
Flue gas temperature
(nominal load) ºC 65 75
1 - Based on 1013.25 mbar and 15°C.
84 Installation, Maintenance and Service part