22m 22m
HEAT 12 HEAT 15 HEAT 18 HEAT 24 HEAT 30
Weight (packaged) kg 28.5 28.5 28.5 28.5 28.5
Max installation weight kg 22.8 22.8 22.8 22.8 22.8
CH output (kW) min/max
@ 70°C
4.8 - 12.0 4.8 - 15.0 4.8 - 18.0 4.8 - 24.2 6.1 - 30.3
CH output (kW) min/max
@ 40°C
5.1 - 13.0 5.1 - 15.9 5.1 - 19.1 5.1 - 25.6 6.4 - 31.0
DHW output (kW) max n/a n/a n/a n/a n/a
DHW flow rate l/min.
35°C rise
n/a n/a n/a n/a n/a
SEDBUK rating (2005) % 91.2 91.1 91 91 91.1
SEDBUK rating
(2009/2012) %
89.4 89.3 89.2 89.5 89.6
NOx classification CLASS 5 CLASS 5 CLASS 5 CLASS 5 CLASS 5
Adjustable to LPG No No No Yes Yes
Condensing boiler Ye s Yes Yes Yes Yes
Seasonal space heating
efficiency class
A A A A A
Rated heat output kW 12 15 18 24 30
Seasonal space heating
energy efficiency η
son %
92 93 92 93 93
Sound power level,
indoors L
WA dB
40 41 42 45 45
Water heating energy
efficiency class
n/a n/a n/a n/a n/a