Baxi 424 Combi 2 User Manual page 33

13 Appendix
Tab.16 Weighting of boilers
Psup / (Prated + Psup)
(1)(2)
0
0.1
0.2
0.3
0.4
0.5
0.6
≥ 0.7
(1) The intermediate values are calculated by linear interpolation between the two adjacent values.
(2) Prated is related to the preferential space heater or combination heater.
Tab.17 Package efficiency
Baxi Combi
Temperature control X
Temperature control Y
I The value of the seasonal space heating energy efficiency of the
preferential space heater, expressed in %.
II The factor for weighting the heat output of preferential and
supplementary heaters of a package as set out in the following
table.
III The value of the mathematical expression: 294/(11 · Prated),
whereby 'Prated' is related to the preferential space heater.
IV The value of the mathematical expression 115/(11 · Prated),
whereby 'Prated' is related to the preferential space heater.
II, package without hot water storage tank
0
0.3
0.55
0.75
0.85
0.95
0.98
1.00
II, package with hot water storage tank
0
0.37
0.70
0.85
0.94
0.98
1.00
1.00
424 430 424 LPG 430 LPG
%
%
400 Combi 2 33