13
2.4 Operating data
Below indicated burner pressures are to be checked after a three minute boiler operation.
CTN 24 AF
Type of gas
Max. heat
input
Max. heat
output
Min. heat
output
Gas mains inlet
pressure
Diameter of
nozzles
Burner pressure
(kW) (kW) (kW) (mbar) (mm)
(mbar)
min max
Methane Gas
G20
24.5 22.2 10.8 20 1.30 3.2 12.5
Butane Gas G30 24.5 22.2 10.8 29 0.78 6.6 27.5
Propane Gas
G31
24.5 22.2 10.8 37 0.78 8.5 35.5
No. 2 chart – Adjustment data
Hot water supply ΔT 45°C = 7,1 l/min
Hot water supply ΔT 40°C = 8,0 l/min
Hot water supply ΔT 35°C = 9,1 l/min
Hot water supply ΔT 30°C = 10,6 l/min*
Hot water supply ΔT 25°C = 12,7 l/min*
*mixed water to the tap
2.5 General characteristics
CTN 24 AF
Equipment category - II2H3+
Number of burner nozzles installed n° 11
Minimum CH flow rate l/h 550
Minimum CH pressure bar 0.5
Maximum CH pressure bar 3
Minimum DHW pressure bar 0.5
Maximum CH pressure bar 8
DHW specific capacity (Δt 30 °C) l/min 10.6
Electric power Supply – Voltage / Frequency V - Hz 230-50
Power mains supply fuse A 2
Maximum power consumption W 61
Pump absorption W 41
Electric protection rating IP X4D
Net weight Kg 24.9
Methane gas consumption (*) m
3
/h 2.59
Butane gas consumption kg/h 1.93
Propane gas consumption kg/h 1.90
Maximum CH working temperature °C 83
Maximum DHW working temperature °C 58
Total capacity of expansion vessel l 6
Maximum recommended CH system capacity (**) l 100
No. 3 chart – General characteristics
(*) Value related to 15°C – 1013 mbar condition
(**) Maximum water temperature of 83°C, vessel preloaded at 1 bar.
CTN 24 AF Max. heat output Min. heat output 30% load
Casing heat loss % 3.57 4.85 -
Flue system heat loss with burner on % 5.83 8.65 -
Flue system mass capacity (methane gas) g/s 16.7 16.5 -
Flue temp.– air temp. °C 85 66 -
CO
2
(methane - propane - butane) % 5.7 / 7.4 / 7.3 2.7 / 3.8 / 3.7 -
Boiler efficiency rating % 90.6 90.0 90.0
Nox emission class - 2
No. 4 chart – Combustion data CTN 24 AF model
To Next Page
Loading...
