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4.2
Appliance
Most of the appliance is manufactured from recyclable materials.
This symbol indicates that this appliance must not
be disposed of with household waste, that it should
be selectively collected for energy recovery, reuse or
recycling.
• Take the appliance to an appropriate collection point.
By complying with this directive, you will contribute
to the preservation of natural resources and the
protection of human health.
TECHNICAL DATA
Description
Unit
24
28
Gas Category
II2H3P
IIH3P
SEDBUK Rating
%
Heating
Maximum heating input power
kW
18.0
24.0
Minimum heating output power at
80
0
/60
0
C (Pmin)
kW
7.8
9.2
Maximum heating output power at
80
0
/60
0
C (Pmax)
kW
17.6
23.4
Minimum heating output power at
50
0
/30
0
C (Pmin)
kW
8.7
10.3
Maximum heating output power at
50
0
/30
0
C (Pmax)
kW
19.6
25.9
Minimum heating temperature
0
C
10
10
Maximum heating temperature
0
C
75
75
Content of heating expansion vessel
l
8
8
Heating expansion vessel preset
pressure
bar
0.75
0.75
psi
10.9
10.9
Maximum heating system volume
(approx)
l
160
160
Heating safety valve preset pressure
(PMS)
bar
2.5
2.5
psi
36.3
36.3
Domestic hot water
Maximum DHW output power (P max)
kW
24.0
28.0
Minimum DHW output power (P min)
kW
8.0
9.5
Maximum DHW temperature
0
C
60
60
Specifi c fl ow rate (∆T of 35K) EN 13203
l/min
9.4
11.4
Minimum inlet water pressure
bar
0.8
0.8
psi
11.6
11.6
Maximum inlet water pressure
bar
10.0
10.0
psi
145
145
Combustion
Appliance NOX Class
5
5
Description
Unit
24
28
Electrical
Electrical supply
V/Hz
230V
50Hz
230V
50Hz
Standby mode electrical power
W
3
3
Operating mode electrical power
W
130
130
Internal fuse rating on main PCB
A
2
2
Index of electrical protection (EN 60529)
IPX4D
IPX4D
Connections & weights
Gas connection Ø O.D.
mm
22
(copper)
22
(copper)
Heating fl ow and return connection Ø
O.D.
mm
22
(copper)
22
(copper)
Domestic Hot Water connection Ø O.D.
mm
15
(copper)
15
(copper)
Condensate connection Ø I.D.
mm
21.5
(plastic)
21.5
(plastic)
Safety valve discharge connection Ø
O.D.
mm
15
(copper)
15
(copper)
Lift weight
kg
32.5
33.8
Total weight (installed)
kg
36.7
38.2
Natural Gas G 20 (15 °C, 1013.25 mbar)
Maximum DHW gas fl ow rate
m
3
/hr
2.482
2.974
Maximum heating gas fl ow rate
m
3
/hr
1.936
2.482
Minimum gas fl ow rate
m
3
/hr
0.882
0.989
CO
2
at Qmax DHW + "tolerance case
ON"
%
9.2 ±
0.3%
9.2 ±
0.3%
CO
2
at Qmax DHW + "tolerance case
OFF"
%
9 ±
0.2%
9 ±
0.2%
CO
2
at Qmin +
"tolerance case ON"
%
8.9 ±
0.3%
8.9 ±
0.3%
CO
2
at Qmin +
"tolerance case OFF"
%
8.7 ±
0.2%
8.7 ±
0.2%
Inlet pressure
mbar
20
20
Propane Gas G 31 (15 °C, 1013.25 mbar)
Maximum DHW gas fl ow rate
m
3
/hr
0.924
1.109
Maximum heating gas fl ow rate
m
3
/hr
0.704
0.950
Minimum gas fl ow rate
m
3
/hr
0.31
0.376
CO
2
at Qmax DHW + "tolerance case
ON"
%
10.3 ±
0.3%
10.3 ±
0.3%
CO
2
at Qmax DHW + "tolerance case
OFF"
%
10.1 ±
0.2%
10.1 ±
0.2%
CO
2
at Qmin +
"tolerance case ON"
%
9.8 ±
0.3%
9.8 ±
0.3%
CO
2
at Qmin +
"tolerance case OFF"
%
9.6 ±
0.2%
9.6 ±
0.2%
Inlet pressure
mbar
37
37
