Indirect Fired Water Heater Brochure

A Tradition of Excellence
The world leader in heating technologies
since 1825, Buderus produced the
first low-temperature hydronic heating
systems. Today, Buderus products are
acknowledged as the global standard in
high-efficiency, low emissions hydronic
heating. All Buderus products are
designed to meet strict safety and
environmental regulations.
Buderus boilers are quick and easy to
install and will outlast and outperform
virtually any other hot water heating
system. They are designed for easy
access and service. With appropriate
maintenance, Buderus boilers deliver
the highest efficiencies throughout
the lifespan of operation. Buderus is a
member of Bosch Thermotechnology.
44499217 1/2013 Copyright © 2013 Bosch Thermotechnology Corp. All rights reserved. Subject to change without notice.
Bosch Thermotechnology Corp., 50 Wentworth Avenue, Londonderry, NH 03053 • Tel: [phone] • Fax: [phone] • www.buderus.us
Product Updates
Configuration
Vertical Single Coil Models Vertical Dual Coil Models
Horizontal Single
Coil Models
S32 SU54 SU80 SU100 SM80 SM100 LT160 LT200 LT300
Physical Data
Tank Capacity, gal 31.7 52.8 79.3 103 79.3 103 42 53 79
Diameter, in. 21¾ 21¾ 26
3
/
8
26
3
/
8
26
3
/
8
26
3
/
8
25¾ 25¾ 25¾
Height, in. 38
5
/
8
60¼
58
7
/
8
72¼
58
7
/
8
72¼
25¾ 25¾ 25¾
Length, in. – – – – – –
36¼
42
7
/
16
57¾
Connection Heat Exchanger Coil, in. ¾ 1 1 1 1 1 1 1 1
Connection DHW outlet, in. ¾ 1 1 1 1 1 1 1 1
Connection Cold Water Inlet, in. ¾ 1 1 1 1 1
1¼ 1¼ 1¼
Connection Recirculation, in. ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾
Approx. Dry Weight, lbs 160 185 231 263 260 298 220 247 363
Max. DHW Temperature, °F 203 203 203 203 203 203 203 203 203
Max. DHW Operating Pressure, psi 145 145 145 145 145 145 145 145 145
Standby Heat Loss, °F/h* 0.86 0.65 0.41 0.34 0.43 0.34 0.49 0.45 0.36
Max. Heat Exchanger Coil Water
Temperature, °F
320 320 320 320 320 320 320 320 320
Max. Heat Exchanger Coil Pressure,
psi
232 232 232 232 232 232 232 232 232
Performance Data**
Lower Coil Upper Coil Dual Coil Lower Coil Upper Coil Dual Coil
Heat Input to Tank, MBH 90.5 80.2 100.7 157 100.7 78.5 161.2 157 97.2 228.8 100.3 113 167.2
Continuous Rating at:
(gph) 120 107 134 209 134 105 215 209 129 305 134 150 223
First Hour Rating:
(gph)
143 144 190 281 190 105 215 281 129 305 163 187 278
Boiler Water Flow Rate, gpm 11 9 11 11 11 11 11 11 11 11 12 12 12
Coil Pressure Drop: ft of Head: 3 1.6 3.1 3.7 3.1 2.3 5.7 3.7 2.4 6.4 2 2.3 2.7
Configuration
Stainless Steel Models
SST150-40 SST250-65 SST300-80 SST450-119
Physical Data
Tank Capacity, gal 40 67 81 113.4
Diameter, in. 20 24 24 28
Height, in. 56 60 70 69
Length, in. – – – –
Connection Heat Exchanger Coil, in. 1 1 1 1
Connection DHW outlet, in. 1 1 1 1
Connection Cold Water Inlet, in. 1 1 1 1
Approx. Dry Weight, lbs
(5% higher including packaging)
105 147 177 213
Max. DHW Temperature, °F 194
Max. DHW Operating Pressure, psi 150
Standby Heat Loss, °F/h* 0.7 0.5 0.5 0.4
Performance Data
†
Heat Input to Tank, MBH 115 154 171 216
Continuous Rating at: (gph) 181 263 285 349
First Hour Rating: (gph) 208 327 350 459
Boiler Water Flow Rate, gpm 14 14 14 14
Coil Pressure Drop: ft of Head 4.5 5.7 6.1 6.5
* Standby heat loss tested at 149°F (65°C) DHW Temperature, 68°F (20°C) Room Temperature
** Performance data tested at 176°F (80°C) Boiler Supply Temperature, 50°F (10°C) Cold Water Inlet Temperature,
140°F (60°C) DHW Outlet Temperature
† Performance data tested at 180°F (82.2°C) Boiler Supply Temperature, 58°F (14.4°C) Cold Water Inlet Temperature,
135°F (57.2°C) DHW Outlet Temp