Technical Data; Technical Information - Baxi 224 Combi 2 Installation And Service Manual

3.2

Technical data

Tab.5 Technical settings for combination heaters with boilers
Baxi - Combi (C)
Condensing boiler
Low-temperature boiler
(1)
B1 boiler
Cogeneration space heater
Combination heater
Rated heat output
Useful heat output at rated heat output and
high temperature setting
(2)
Useful heat output at 30% of rated heat out­
put and low temperature setting
Seasonal space heating energy efficiency
Useful efficiency at rated heat output and high
temperature setting
(2)
Useful efficiency at 30% of rated heat output
and low temperature setting
Standard
BS 7074
BS 7593
BS 4814
IGE/UP/
7/1998
Tab.4
Standard
IS 813
The following standards give valuable additional information:
BS 5546
BS EN
12828
BS EN
12831
BS EN
14336
BS 7074
BS 7593
3.2.1
Prated
P4
P1
(1)
ƞs
ƞ4
ƞ1
(1)
Scope
Expansion vessels and ancillary equipment for sealed wa
ter systems.
Treatment of water in domestic hot water central heating
systems.
Specification for Expansion Vessels using an internal dia
phragm, for sealed hot water systems.
Guide for gas installations in timber framed housing.
In IE the following Code of Practice apply:
Scope
Domestic Gas Installations.
Installation of hot water supplies for domestic purposes.
Heating systems in buildings.
Heating systems in buildings — Calculation of load.
Installation & commissioning of water based heating sys
tems.
Expansion vessels and ancillary equipment for sealed wa
ter systems.
Treatment of water in domestic hot water central heating
systems.

Technical information

Important
All data in these sections are nominal and subject to normal pro
duction tolerances.
224 Combi 2
Yes
No
No
No
Yes
kW 20
kW 20
6.7
kW
%
93
88.2
%
97.9
%
3 Technical specifications
228 Combi 2
Yes
No
No
No
Yes
20
20
6.7
93
88
97.8
Combi 2
13