Buderus G315 | G515

G515
Model G515/7 G515/8 G515/9 G515/10 G515/11 G515/12
Performance Data
Gross Output MBH 818 1,009 1,200 1,391 1,582 1,773
# of Sections 7 8 9 10 11 12
Max. Input Gas MBH 995 1,216 1,438 1,660 1,881 2,103
Max. Input Oil 6.9 8.4 10.0 11.6 13.0 14.6
Net IBR MBH 711 877 1,043 1,210 1,376 1,542
Boiler HP 24.5 30.2 35.9 41.6 47.3 53.0
Max. Operating Pressure (psi) 87 87 87 87 87 87
Combustion Efficiency Oil 88.2% 88.2% 88.1% 88.1% 88.1% 88.1%
Combustion Efficiency Gas 85.6% 85.5% 85.5% 85.5% 85.4% 85.4%
Thermal Efficiency Oil 84.8% 85.5% 86.1% 86.4% 86.8% 87.0%
Thermal Efficiency Gas 82.1% 83.0% 83.5% 83.9% 84.2% 84.4%
Piping Connections
Vent Connection Size 10" 10" 10" 10" 10" 10"
Supply 4" 4" 4" 4" 4" 4"
Return 4" 4" 4" 4" 4" 4"
Physical Dimensions
Overall Boiler Length (LG) 62¼" 69" 75¾" 82½" 89¼" 95¾"
Boiler Block Length (LK) 54½" 61" 67½" 74¼" 81" 87½"
Boiler Door Thickness 5" 5" 5" 5" 5" 5"
Minimum Boiler Width (BE) 33" 33" 33" 33" 33" 33"
Height 52¼" 52¼" 52¼" 52¼" 52¼" 52¼"
Fire Box Depth (LF) 45¾" 52½" 59¼" 66 72½" 79¼"
Fire Box Diameter 20¼" 20¼" 20¼" 20¼" 20¼" 20¼"
Fire Box Volume (cu. ft.) 14.87 17.16 19.46 21.75 24.05 26.31
Dry Weight (lbs.) 2,731 3,059 3,505 3,864 4,188 4,541
Water Content (gal.) 68.2 77.7 87.2 96.7 106.2 115.7
Operating Weight (lbs.) 3,300 3,707 4,233 4,671 5,074 5,506
G515 Foundation Dimensions
33½"
3½"
Boiler Model 515/7 515/8 515/9 515/10 515/11 615/12
Foundation Length L1 53¾" 60¼" 67" 73½" 80¼" 87¼"
Flat Plate Length L2 46¾" 53½" 60¼" 67" 73½" 80¼"
4"
21¼"
3½"
4 "
L1
515 Section Weights in lbs
Front Intermediate Rear
326 331 357
Buderus recommends the use of Beckett, Power Flame
and Riello burners for oil/gas firing.
Approvals and Certifications
Approval Numbers
MEA 293-97E
CRN No# 1529.9C
MA# G3-0610-523
33"
L 2
38½"
L K
4" Boiler Supply
5¾"
min
32"
(12")
38 ½"
L K/2
+20"
36"
5½"
2¼"
4½"
4"Boiler
Return
Vent Connection
33"
A+4"
(36")
max
10"
Burner
Connection
52¼"
L G
23½"
44"
10"
¾" Drain
L K+40"
(4')
A
Front View
Side View
Rear View