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15
AST 14 C 152/00
3.4 TECHNICAL DATA
BTFS 24
BTFS 28
BTFS 32
Boiler category
II2H3+
II2H3+
II2H3+
Burner nozzles
No.
12
13
15
Minimum CH flow rate
L/h
900
1000
1200
Minimum CH pressure
Bar
0,5
0,5
0,5
Maximum CH pressure
Bar
3
3
3
Minimum DHW pressure
Bar
0,3
0,3
0,3
Maximum DHW pressure
Bar
8
8
8
DHW specific flow rate (
∆
t 30 according to EN 625)
L/ 10
min.
160
180
200
Electrical power supply –Voltage/Frequency
V - HZ
230 - 50
230 - 50
230 - 50
Power mains fuse
A
2
2
2
Maximum power consumption
W
180
200
230
Net boiler weight
Kg
67,0
67,5
68
Methane gas consumption (*)
m3/h
2,70
3,23
3,46
Butane gas consumption
kg/h
2,01
2,40
2,62
Propane gas consumption
kg/h
1,98
2,37
2,51
Maximum CH working temperature
°C
83
83
83
Maximum DHW working temperature
°C
62
62
62
Total capacity of expansion vessel
L
8
10
10
Maximum recommended CH system capacity (**)
L
160
200
200
(*) Value rel ated t o 15°C – 1013 mbar c ondition - (**) Maxi mum t emperature of water 83°C, expansion vess el press ure pre-charge 1 bar
BTFS 24
Max output
Min output
30% output
Outer casing heat loss
%
0,23
0,23
-
Flue system heat loss with burner on
%
6,57
9,67
-
Flue gas mass capacity
g/sec.
14,0
14,4
-
Flue temp. – Air temp.
°C
75
67
-
CO
2
value
%
7,2
2,8
-
Boiler efficiency rate
%
93,2
90,1
90,2
BTFS 28
Max output
Min output
30% output
Outer casing heat loss
%
0,23
0,23
-
Flue system heat loss with burner on
%
6,67
8,87
-
Flue gas mass capacity
g/sec.
18,2
18,7
-
Flue temp. – Air temp.
°C
75
45
-
CO
2
value
%
6,6
2,1
-
Boiler efficiency rate
%
93,1
90,9
90,4
BTFS 32
Max output
Min output
30% output
Outer casing heat loss
%
0,23
0,23
-
Flue system heat loss with burner on
%
6,67
9,77
-
Flue gas mass capacity
g/sec.
18,9
19,2
-
Flue temp. – Air temp.
°C
92
45
-
CO
2
value
%
6,9
2,5
-
Boiler efficiency rate
%
93,1
90,0
90,3
