Buderus Logano plus SB615 - Technical Specifications and Dimensions

Boiler rating Unit 145 185 240 310 400 510 640
Max. gas input [MBtu/h] 506 644 835 1080 1393 1776 2228
Rated output (gross output) [MBtu/h] 484 612 791 1022 1317 1678 2104
IBR Net [MBtu/h] 421 532 688 889 1145 1459 1830
Thermal efficiency [%] 95.6 95.0 94.8 94.6 94.5 94.5 94.4
Combustion efficiency [%] 97.1 96.7 96.5 96.4 96.3 96.2 96.2
Length L [inch] 68 3/4 68 3/4 70 70 75-1/4
Length L
K
[inch] 60 61 61 66-1/2
Height H [inch] 54-1/4 55-1/2 63-1/2 69-1/2
Width B [inch] 35-1/2 38-1/2 38-1/2 43-1/2
Boiler breech inner diameter ØAA [inch (mm)] 7" (183) 8" (203) 10" (253) 12" (303)
Height H
AA
[inch] 12 12 13 15
Weight approx. [lbs] 1709 1725 1866 1914 2154 2845 2900
Boiler return RK1 [°F] 149 176 212 212
Boiler return RK2 [°F] 104 149 149 176
Flue gas temperature [°F]
1
104 104 115 115 108 111 111
[°F]
2
151 151 160 160 154 156 160
Available flue pressure [inch W.C.] Varies depending on burner
Flue gas back-pressure [inch W.C.] 0,48 0,62 0,88 0,96 1,20 1,43 1,77
Tab. 3 Specifications
1
Flow/return temperature 40 °C/30 °C.
2
Flow/return temperature 75 °C/60 °C.
NOTE
The SB 615/145 and SB 615/185 boilers
are factory-fitted with a stainless steel flue
pipe reducer made by Heat Fab. The flue
connection is reduced from 7" to 6".
All other models require a flue pipe
connector approved for the installation site.
Specifications, dimensions and connections
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Logano plus SB615 - Technical specifications are subject to change without prior notice.
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