Baxi POWER HT+ 1.50 User Manual page 35

Tab.20 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.21 Package efficiency
Baxi - POWER HT +
Seasonal space heating energy efficiency of boiler
Temperature control
Seasonal space heating energy efficiency of package
7609475 - v09 - 22072020
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
POWER HT+
1.50
% 93
% 2
% 95
POWER HT +
12 Appendix
POWER HT+
1.70
93
2
95
35