INSTALLATION INSTRUCTIONS
4
2. TECHNICAL CHARACTERISTICS
2.1 Technical data
Model
RKA 34 /20
CE Certification
n°
0694CO7385
Appliance Type
B23p-B33-C13-C33-C43-C53-C63-C83-C93
Appliance Category
II2H3B/P
Heat Input max
kW
34
Heat Input min
kW
10
Heat Output max (50/30°)
kW
36.24
Efficiency 100% (full load 50/30°)
%
106.6
Efficiency 30% (partial load 50/30°)
%
107.9
Heat Output max - 80/60°C (Non condensing)
kW
33.42
Heat Output min - 80/60°C (Non condensing)
kW
9.73
Efficiency 100% (full load 80/60°)
%
98.3
Efficiency 30% (partial load 80/60°)
%
100.7
GAS DIRECTIVE 92/42/ECC - Efficiency marking
stars
4
NOx
class
5
Central Heating circuit
Central Heating water temperature setting (min-max)
°C
30-80 / 25-45
Max. heating working temperature
°C
80
Expansion vessel capacity
litres
10
Max. working pressure (heating)
bar
3
Min. working pressure (heating)
bar
0.3
Domestic Hot Water circuit
D.H.W. temperature setting (min-max)
°C
35-60
Max. Hot water working pressure
bar
6
Min. Hot water working pressure
bar
0.5
D.H.W. 40 °C water supply (
∆
t 30 °C) for 1 hour
litres
1011
Max D.H.W. 40 °C water supply (
∆
t 30 °C) first 10 minutes
litres
181
Storage cylinder capacity
llitres
20
D.H.W. Circuit expansion vessel capacity
llitres
1
Dimensions (Boiler casing size)
Width
mm
490
Height
mm
900
Depth
mm
480
Weight (net)
kg
68
Hydraulic connections
Central Heating Flow connection
Ø
3/4”
Central heating Return connection
Ø
3/4”
Cold water mains connection
Ø
1/2”
D. Hot water connection
Ø
1/2”
Gas connection
Ø
1/2”
Flue systems
Horizontal-Concentric flue system
Ø mm
80/125
Max. Flue length
m
8
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
80/125
Max. Flue length
m
8
Gas Supply
Natural gas G 20
Inlet pressure
mbar
20
Gas consumption
m
3
/h
3.6
Butane G30
Inlet pressure
mbar
30
Gas consumption
kg/h
2.68
Propane G31
Inlet pressure
mbar
37
Gas consumption
kg/h
2.64
Electrical specifications
Power supply
V/Hz
230/50
Electrical power consumption
W
158
Electrical protection
IP
X4D
Summary of Contents for RK 25 /B
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