II
The factor for weighting the heat output of preferential and supple
mentary 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.
Tab.22 Weighting of boilers
Psup / ( 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.23 Package efficiency
Baxi - POWER HT +
POWER HT+
1.50
POWER HT+
1.70
Seasonal space heating energy efficiency of boiler
%
93
93
Temperature control
%
2
2
Seasonal space heating energy efficiency of package
%
95
95
12 Appendix
40
POWER HT +
7609475 - v04 - 15072015
