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7
AST 14 C 258/00
1.3 TECHNICAL SPECIFICATIONS
General Characteristics
KRB 12
KC-KRB
24
KC-KRB
28
Operating parameters
Equipment category
II2H3P
Burner nozzles
n°
2
Minimum CH circuit flow rate
l/h
400
600
CH circuit min. pressure
bar
0,5
CH circuit max. pressure
bar
3
DHW circuit min. pressure
bar
0,5
DHW circuit max. pressure
bar
6
DHW specific flow rate
∆
t 30°C
l/min
13,5
15
Double flow probe triggering temperature OFF
°C
105
Double flow probe triggering temperature ON
°C
90
Flue gas thermostat triggering temperature
°C
105
Standard central heating setting range
°C
20 ÷ 78
Maximum CH working temperature
°C
20 + 45
DHW setting range
°C
35 ÷ 57
Maximum DHW working temperature
°C
35 ÷ 65
Total capacity of expansion vessel
l
9
Maximum recommended system capacity (**)
l
200
Nominal electrical data
Electric Power Supply: Voltage / Frequency
V – Hz
230-50
Power mains supply fuse
A
2
Electric cabinet protection degree
IP
X4D
Max. absorbed power
W
131
133
Electric power in standby condition
W
1,2
Overall dimensions and connections
Height mm
700
Width mm
400
Depth mm
250
Gas connection
-
G ½
Flow and return connection
-
G ¾
Cold water and hot domestic water connection
-
G ½
Consumption
Natural gas consumption (*)
m
3
/h 1,27 2,51
2,8
Propane gas consumption (*)
kg/h
0,93
1,84
2,1
Operating characteristics
Type of ignition
-
Elettronica
Flame surveillance
-
Ionizzazione
Type of detection
-
Non polarizzata fase-neutro
Hot DHW production
-
Boiler
Istantanea (KC)
boiler (KRB)
(*) Value related to 15°C - 1013 mbar condition
(**) Maximum water temperature at 83°C, vessel preloaded at 1 bar.
