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7
AST 14 C 255/00
1.3 TECHNICAL SPECIFICATIONS
General Characteristics
RTFS CTFS
24 kW
28 kW
24 kW
28 kW
32 kW
Operating parameters
Equipment category
II2H3+
Burner nozzles
no.
11
13
11
13
15
CH circuit max. and min. pressure
bar
3 - 0.5
DHW circuit max. and min. pressure (KC)
bar
-
6 - 0.5
DHW specific flow rate
∆
t 30°C
l/min
-
11.6
14.2
15.1
Double flow probe triggering temperature OFF
°C
105
Double flow probe triggering temperature ON
°C
90
Standard central heating setting range
°C
35 ÷ 78
Standard max. operating temperature range
°C
78 + 5
Reduced central heating setting range
°C
35 ÷ 45
Reduced max. working temperature range
°C
45 + 2
Plate DHW setting range
°C
-
35 ÷ 57
Plate maximum DHW operating temperature
°C
-
57 + 5
Boiler DHW setting range
°C
35 ÷ 65
-
Nominal capacity of expansion tank
l
7
Maximum recommended system capacity (**)
l
150
Nominal electrical data
Power supply: Voltage/Frequency
V / Hz
230-50
Power mains supply fuse
A
2
Electric cabinet protection degree
IP
X5D
Max. absorbed power
W
122
134
122
134
134
Electric power in standby condition
W
2.3
Overall dimensions and connections
Height mm
750
Width mm
420
Depth mm
315
Gas connection
-
G ½
Flow and return connection
-
G ¾
Cold water and hot domestic water connection / boiler
-
G ½
Net weight
Kg
26
33.5
28
35.5
35.5
Consumptions at maximum flow rate
Natural gas consumption (*) m
3
/h 2.72 2.70 2.72 2.70 3.23
Butane gas consumption kg/h
2.02
2.01
2.02
2.01
2.40
Propane gas consumption (LPG) kg/h
1.99
1.98
1.99
1.98
2.36
Operating characteristics
Type of ignition
-
Electronic
Flame surveillance
-
Ionisation
Type of detection
-
Non-polarised
(*) Value related to 15°C - 1013 mbar condition
(**) Maximum water temperature at 83°C, vessel preloaded at 1 bar.
