CleaverBrooks CFC ClearFire - ClearFire Efficiencies; Efficiency Tables

Model CFC ClearFire Commercial Boilers
14 Rev. 05-2012
Figure B5-7. Competitive Condensation Analysis
ClearFire
Efficiencies
The Tables below depict the operating efficiencies of each size Model CFC boiler,
including radiation losses. As the Model CFC is a fully condensing boiler, maximum
efficiency is obtained when operating within the condensing mode, utilizing the latent
heat of condensation.
Table B5-5. CFC 500 ClearFire Efficiency
Table B5-6. CFC 750 ClearFire Efficiency
Competitor 1
Competitor 2
Clearfire
Firing Rate
%
Return Water Temperature F
0
(C)
68 80 100 120 130 140 160
(20) (27) (38) (49) (55) (60) (72)
20 99.0 98.8 97.5 94.8 92.0 88.5 88.0
50 97.4 96.2 95.0 92.2 90.5 88.5 88.0
75 97.0 95.6 93.0 90.5 89.0 88.5 88.0
100 96.0 94.6 92.0 89.0 88.5 88.4 87.9
Firing Rate
%
Return Water Temperature F
0
(C)
68 80 100 120 130 140 160
(20) (27) (38) (49) (55) (60) (72)
20 98.3 97.1 93.6 91.7 90 88.0 87.5
50 96.5 95.3 91.8 89.9 88.5 88.0 87.5
75 96 94.9 91 89 88 87.5 86.5
100 94 92.7 90.5 88.5 87.8 87.0 86