26
Technical features and dimensions
Description
um
KR 24
KRB 24
CH nominal heat input
kW
20,0
Minimum heat input
kW
5,0
Maximum heat output (80-60°C) - CH
kW
19,5
Minimum heat output (80-60°C) - CH
kW
4,7
Maximum heat output (50-30°C) - CH
kW
21,0
Minimum heat output (50-30°C) - CH
kW
5,4
Minimum CH system pressure
bar
0,5
Maximum CH system pressure
bar
3,0
Electric power supply – voltage / frequency
V - Hz
230 -50
Power mains supply fuse
A
3,15
Maximum power consumption
W
85
Pump absorption
W
41
Electric protection rating
IP
X4D
Net weight
kg
23,5
Natural gas consumption at maximum CH output (Value referred to 15 °C - 1013 mbar)
cu. m/h
2,12
Propane gas consumption at maximum CH output
kg/h
1,55
Maximum CH working temperature
°C
83
Maximum DHW working temperature
°C
62
Total capacity of expansion vessel
l
7
Maximum recommended system capacity (Maximum water temperature 83°C, expansion
vessel pressure 1 bar)
l
100
Tab. 3 General specifications KR/KRB
Description
um
Max. output
Min. output
30% load
Casing heat loss with burner on
%
0,64
2,43
-
Casing heat loss with burner off
%
0,255
Flue system heat loss with burner on
%
2,06
1,87
-
Flue system mass capacity
g/s
10,7
2,2
-
Flue temp. – air temp.
°C
47,7
33,7
-
Heat efficiency (80-60°C)
%
97,3
95,7
-
Heat efficiency (50-30°C)
%
105,3
107,8
-
30% heat output efficiency rating
%
-
-
109,6
NOx emission class
-
6
Tab. 4 KC-KR-KRB 24 combustion data
Summary of Contents for minorca kr
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