INSTALLATION INSTRUCTIONS
4
2. TECHNICAL CHARACTERISTICS
2.1 Technical data
Models
RK 18 OV
RK 25 OV
CE Certification
n°
0694BN3485
Appliance Type
B23p-B33-C13-C33-C43-C53-C63-C83-C93
Appliance Category
II2H3+
Heat Input max
kW
18
25
Heat Input min
kW
4
9
Heat Output max (50/30°)
kW
19.26
26.67
Heat Output max - 80/60°C (Non condensing)
kW
17.69
24.6
Heat Output min - 80/60°C (Non condensing)
kW
3.9
8.73
Full Load Efficiency (SEDBUK EFFICIENCY)
%,net
98.3
98.4
Part Load Efficiency (SEDBUK EFFICIENCY)
%,net
108.1
106.3
GAS DIRECTIVE 92/42/ECC - Efficiency marking
stars
4
Sedbuk
band
A
Central Heating circuit
Central Heating water temperature setting (min-max)
°C
30-80 / 25-40
Max. heating working temperature
°C
80
Max. working pressure (heating)
bar
3
Min. working pressure (heating)
bar
0.3
Dimensions (Boiler casing size)
Width
mm
410
Height
mm
730
Depth
mm
290
Weight (net)
kg
31
33
Hydraulic connections
Central Heating Flow connection
Ø mm
22
Central heating Return connection
Ø mm
22
Gas connection
Ø mm
15
Condensate Drain
Ø mm
25
Flue systems
Horizontal-Concentric flue system
Ø mm
60/100
Max. Flue length
m
6
Twin pipe flue system
Ø mm
80/80
Max. Flue length (from terminal to terminal)
m
50
Twin pipe flue system
Ø mm
60/60
Max. Flue length (from terminal to terminal)
m
30
Vertical-Concentric flue system
Ø mm
60/100
Max. Flue length
m
6
Gas Supply
Natural gas G 20
Inlet pressure
mbar
20
Gas consumption
m
3
/h
1.91
2.65
Butane G30
Inlet pressure
mbar
30
Gas consumption
kg/h
1.42
1.97
Propane G31
Inlet pressure
mbar
37
Gas consumption
kg/h
1.4
1.94
Electrical specifications
Power supply
V/Hz
230/50
Electrical power consumption
W
60
Electrical protection
IP
X4D
