Bock Water heaters Commercial Oil-Fired Water Heaters User Manual
Oil-Fired
Commercial Water Heaters
Featuring Bock’s Legendary
The heat exchanger with
hundreds of turbons to
boost heat transfer --
heating water faster
with less fuel.
Standard & ASME Construction
3-Year limited warranty on commercial installations
68 to 113 Gallon Capacities
155,000 to 623,000 BTU
Cobalt-enriched Glass-Lined Tank
Dual Magnesium Anode Rods to Inhibit Corrosion
Oil-Fired
71E 72E, 73E, 120E, 541E
Outlet
Auxiliary
Outlet:
32EC/BCS,
71EC,
51EC/BCS
Inlet
T&P
Relief
Valve
D
C
B
E
A
Drain
Valve/
Return:
32E,
50ES, 51E
Aquastat
Connection
Drain
Valve/
Return:
71E
Hand-Hole:
50ES
Hand-Hole:
71E
Outlet
Auxiliary
Outlet
Inlet
T&P
Relief
Valve
D
C
B
E
A
Drain
Valve/
Return
Aquastat
Connection
Hand-Hole
Return:
120E,
190E,
241E,
361E
Outlet
High Limit
Inlet/
Return
T&P
Relief
Valve
C
B
E
A
Drain
Valve
Aquastat
Connection
Hand-Hole
190E, 241E, 361E
Shipping Weight
(lbs)***
Model
Storage
(gal)
Rated Input
BTH/HR GPH A B C D E Standard ASME
Recovery
@ ∆ 90°F
(GPH)
Max. Temp
Setting
(°F)
Inlet
Pipe
Dia.
Outlet
Pipe
Dia.
Return
Pipe
Dia.
Dimensions
71E 68 173,000 1.25 177 160** 1” 1 1/2”* 1 1/2” 66” 26” 6” 13 1/2” 22” 438 N/A
72E 67 199,000 1.50 212 160** 1” 1 1/2”* 1 1/2” 58” 28” 8” 16” N/A 503 N/A
73E 67 242,000 1.75 258 180 1” 1 1/2”* 1 1/2” 58” 28” 8” 16” N/A 503 N/A
120E 113 155,000 1.10 163 180 1” 2”* 2” 67” 31 1/2” 6” 19” 22” 709 N/A
190E 113 190,000 1.35 199 180 1” 2”* 2” 67” 31 1/2” 6” 19” 22” 709 N/A
241E 109 277,000 2.00 286 180 1” 2”* 2”* 67” 31 1/2” 8” 19” 22” 856 912
361E 91 415,000 3.00 443 180 1”
2”* 2”* 67” 31 1/2” 9” 23” 26” 1014 1050
541E 83 623000 4.5 648 180 2” 2”* 2”* 66” 34” 10” N/A 30 1/2” 1232 1258
*Nipple not included
**Optional setting, contact factory
***Weight does not include burner and controls
T&P Valve: Factory Installed
Drain Valve: Factory Installed Brass Valve
Standard Voltage (all): 120V, 60 Hz, 1P
Pressures (all): Working Pressure, 150 psi; Testing Pressure, 300 psi
ASHRAE: All Bock Products Meet or Exceed Current ASHRAE Standards.
Warning: Do not install on combustible ooring. Installation should be in accordance with all national and/or local codes. In the absence of local
codes, refer to NFPA 31 or ANSI Z.21.10.1.
(on selected models)
Caution: The recommended maximum hot water termperature setting for normal residential use is 120°F. Bock recommends a tempering valve or
anti-scald valve be installed and used according to the manufacturer’s directions to prevent scalding.
www.bockwaterheaters.com
110 South Dickinson Street , Madison, Wisconsin 53703
Toll Free 800.794.2491•Phone 608.257.2225●Fax 608.257.5304
80014-C Rev 2/08
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