SlimFit Boiler Efficiency Curve

Boiler Efficiency Curve
100
99
98
97
96
95
94
93
92
91
90
89
88
87
70 80 90 100 110 120 130 140 150 160 170
Return Water Temperature (°F) @ 30 °F Rise
Efficiency (%)
100%
75%
50%
17%
25%
% Of Input Rate
© Weil-McLain
®
2013