S15 S18 S26 S32
Gas supply 2H - G20 - 20mbar
Gas Supply Connection 22mm copper compression
Injector Size m 3.40 3.35 4.30 4.80
Flow Connection Central Heating 22mm copper compression
Return Connection Central Heating 22mm copper compression
Flue Terminal Diameter mm 100
Average Flue Temp-Mass Flow Rate (CH) ºC (g/s) 72ºC (6 g/s) 67ºC (8 g/s) 70ºC (11 g/s) 70º (14 g/s)
CO
2
Content (± 0.7) Max. CH 9.4 % 9.5 % 9.5 % 9.5 %
Min CH 8.3 % 8.5 % 8.4 % 8.2 %
Maximum Working Pressure (Sealed Systems) bar 2.5
Electrical Supply 230 V ~ 50 Hz.
Power Consumption W 73 88 98 102
Fuse Rating External : 3A Internal : 4A Time Delay
Water content Central Heating litre 1.1 1.5 1.8 2.2
Packaged Weight kg 35.5 36.3 37.7 39.7
Maximum Installation Weight kg 30.7 31.5 32.9 34.3
Boiler Casing Size Height mm 740
Width mm 445
Depth mm 330
Heat Exchanger Weight without Burner kg 6.0 7.3 8.2 9.5
Table 1 - General Data
Note. Gas consumption is calculated using a
caloric value of 38.7 MJ/m
3
gross or 34.9 MJ/m
3
nett
To obtain the gas consumption at a different
caloric value:
a. For l/s - divide the gross heat input (kW) by
the gross C.V. of the gas (MJ/m
3
)
b. For ft
3
/h - divide the gross heat input (Btu/h)
by the gross C.V. of the gas (Btu/ft
3
)
c. For m
3
/h - multiply l/s by 3.6
Key to symbols
GB = United Kingdom IE = Ireland (Countries of destination)
PMS = Maximum operating pressure of water
C
13
C
33
C
53
* = A room sealed appliance designed for connection via ducts to a
horizontal or vertical terminal, which admits fresh air to the burner
and discharges the products of combustion to the outside through
orices which, in this case, are concentric. The fan is up stream of
the combustion chamber. (*Note. C
53
covers optional high level and
balconly ue kits only.)
I
2H
= An appliance designed for use on 2nd Family gas, Group H only.
* The 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 have been certied by a notied body.
Boiler Input : Max. Min.
S15 S18 S26 S32 S15 S18 S26 S32
Boiler Input ‘Q’ Nett CV kW 15.1 18.1 26.1 32.1 3.0 3.6 5.2 6.4
Gross CV kW 16.8 20.1 29.0 35.6 3.3 4.0 5.8 7.1
Gas Consumption m
3
/h 1.559 1.869 2.695 3.314 0.310 0.372 0.537 0.661
Boiler Output :
Non Condensing kW 15.0 18.0 26.0 32.0 3.0 3.6 5.2 6.4
70
o
C Mean Water temp.
Condensing kW 16.2 19.3 27.9 34.3 3.2 3.9 5.6 6.8
40
o
C Mean Water temp.
Seasonal efciency* SEDBUK 2005 91 91.1 91.1 91.1 n/a
Seasonal efciency* SEDBUK 2009 88.9 89.3 89.3 89.3 n/a
NOx Classication Class 5
Table 2 - Performance Data - Central Heating
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