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