Appliance Category
CAT I
2H
4.0 Technical Data
10
© Baxi Heating UK Ltd 2014
Horizontal
Flue Terminal
Diameter
110mm
Dimensions
Projection
150mm
Outercase Dimensions
Overall Height
Inc Flue Elbow
-
750mm
Casing Height
-
600mm
Casing Width
-
390mm
Casing Depth
-
280mm
Weights
kg
Packaged Boiler Carton
36.2
Packaged Flue Kit
3.6
Installation Lift Weight
26.0
Connections
Gas Supply
-
1
/
2
in BSPT
Central Heating Flow
-
22mm
Central Heating Return
-
22mm
Condensate Drain
-
1 in BSP
Recommended System
Temperature Drop
Condensing
20°C
36°F
Heat Input (Q)
(Gross)
Max
Min
12 model
kW
13.34
10.2
Btu/hr
45,518
34,840
15 model
kW
16.88
10.2
Btu/hr
57,600
34,840
18 model
kW
20.18
10.2
Btu/hr
68,850
34,840
24 model
kW
24.50
10.2
Btu/hr
83,600
34,840
30 model
kW
33.76
10.2
(see note)
Btu/hr
115,200
34,840
Heat Output (P)
(Non Condensing 70° C Mean Water Temp)
Max
Min
12 model
kW
11.82
9.14
Btu/hr 40,330
31,180
15 model
kW
15.24
9.14
Btu/hr 52,000
31,180
18 model
kW
17.81
9.14
Btu/hr 60,770
31,180
24 model
kW
22.00
9.14
Btu/hr 75,000
31,180
30 model
kW
30.18
9.14
Btu/hr 102,980
31,180
Electrical Supply
230V~ 50Hz
(Appliance must be connected to an
earthed supply)
Power Consumption
80W
External Fuse Rating
3A
Internal Fuse Rating
(BS 4265)
Fuse
3.15 AT (PCB)
Inlet Pressure at Gas Valve
(Natural Gas)
Min
18.1 mbar
Max
22.5 mbar
(see Section 12.1)
Injector
(Natural Gas)
6.5mm Diameter
Clearances
(For unventilated compartments see Section 7.2)
Both Sides
5mm Min
Above Casing
200mm Min
Below Casing
50mm Min
Front (For Servicing)
500mm Min
Front (In Operation)
5mm Min
0
10
20
30
40
20
40
60
80
100
120
140
160
180
200
220
Water Flow Rate (litres/min)
Pressure Drop (mbar)
8
17
25
33
42
50
58
66
75
83
91
Pressure Drop (in wg)
Hydraulic Resistance Chart
Appliance Type
C
13
C
33
C
53
Nox Class
5
Heat Output (P)
(Condensing 40° C Mean Water Temp)
Max
Min
12 model
kW
12.81
Btu/hr 43,400
15 model
kW
16.49
10.1
Btu/hr 56,260
34,520
18 model
kW
19.27
Btu/hr 64,898
24 model
kW
23.8
10.1
Btu/hr 81,200
34,520
30 model
kW
32.61
10.1
Btu/hr 113,280
34,520
Water Content
litres
2.6
pints
4.6
Static Head
max
30 metres (100 ft)
min
1 metre (3.25 ft)
Low Head
0.2m (8 in) min
System Detail
fully pumped open vented & sealed systems
Gas Connection
G
1
/
2
” B.S.P. Thread
Controls
boiler thermostat, safety thermostat,
flow switch, electronic flame sensing,
temperature protection thermostat &
condensate blockage sensor
NOTE: The maximum output of the 30
model is factory set at 22.0kW (75,000
Btu/hr). This can be altered to 30.18kW
(102,980 Btu/hr) - see section 10 .8.
For 12 model - The efficiency is 90.5%
For 15 model - The efficiency is 91.3%
For 18 model - The efficiency is 90.4%
For 24 model - The efficiency is 90.9%
For 30 model - The efficiency is 90.9%
This value is used in the UK Government’s Standard
Assessment Procedure (SAP) for energy rating of
dwellings. The test data from which it has been
calculated has been certified by 0087.
SEDBUK Declaration
Electrical Protection
IPX2
CO/CO
2
Ratio
Up to a maximum
of 0.004
Flow Temperature
(adjustable)
55° C to 78° C (± 5° C)
CO
2
Level
9% ± 1%
Max Gas Rate
(2H - G20 - 20mbar)
(After 10 Mins)
(12)
(15)
(18)
(24)
(30)
Btu/hr 40,950 52,000 61,400
75,000 102,980
m
3
/hr 1.34
1.64
1.94
2.31
2.95
ft
3
/hr
47.3
52.1
68.5
83.3
104.2
NOTE:
All data in this section are nominal values
and subject to normal production tolerances
