Brochure / Specs for Models 20E

Brochure / Specs for Models 20E
Oil-Fired
Residential Water Heaters
Featuring Bock’s Legendary
The heat exchanger with
hundreds of turbofins to
boost heat transfer --
heating water faster
with less fuel.
20 to 113 Gallon Capacities
60,000 to 155,000 BTU
Cobalt-enriched Glass-Lined Tank
Dual Magnesium Anode Rods to Inhibit Corrosion
The popular Bock® 32E leads the industry in
Energy Efficiency with a .63 EF rating
and
170 gallons first hour delivery.
5-Year limited warranty on residential installations
3-Year limited warranty on commercial installations
Oil-Fired
This product is available from:
Inlet
Auxiliary
Outlet:
32EC/BCS,
71EC,
51EC/BCS
D
C
Inlet
Outlet
T&P
Relief
Valve
Aquastat
Connection
A
B
Drain
Valve/
Return
20e
B
Aquastat
Connection
B
Hand-Hole:
71E
Hand-Hole:
50ES
Drain
Valve/
Return:
71E
Hand-Hole
Aquastat
Connection
A
Return:
120E,
190E,
241E,
361E
Inlet
A
Drain
Valve/
Return
Drain
Valve/
Return:
32E,
50ES, 51E
E
T&P
Relief
Valve
B
Aquastat
Connection
Combined
Appliance
Outlet
Inlet
Auxiliary
Outlet
T&P
Relief
Valve
T&P
Relief
Valve
C
Outlet
Auxiliary
Outlet:
40BCSE
D
C
Outlet
D
C
Outlet
A
Drain
Valve/
Return
E
E
E
32E, 50ES, 51E, 71E
Recovery Max. Temp
@ ∆ 90°F
Setting
(GPH)
(°F)
BTH/HR GPH
33E, 40E
120E
Shipping Weight
(lbs)***
Inlet
Pipe
Dia.
Outlet
Pipe
Dia.
Return
Pipe
Dia.
A
B
C
D
E
Standard
ASME
160
3/4”
3/4”
3/4”
38 1/4”
20”
6”
11”
14 3/4”
148
N/A
114
160
3/4”
3/4”
3/4”
51”
20”
6”
11”
17”
272
N/A
111
160
3/4”
3/4”
3/4”
43 1/4”
24”
6”
N/A
17 1/4”
278
N/A
0.90
136
160
3/4”
3/4”
1”
61”
20”
6”
N/A
18”
301
N/A
140,000
1.00
151
160**
1”
1 1/2”*
1 1/2”
52”
26”
6”
369
N/A
50
152,000
1.10
161
160**
1”
1”
3/4”
59”
24”
6”
11”
18”
330
N/A
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
120E
113
155,000
1.10
163
180
1”
2”*
2”
67”
31 1/2”
6”
19”
22”
709
N/A
Rated Input
Model
Storage
(gal)
20e
20
60,000
0.43
66
32E
32
104,000
0.75
33E
33
104,000
0.75
40E
40
126,000
50ES
50
51E
Dimensions
13 1/2” 18 1/2”
NOTE: 32E First Hour Rating = 170 Gallons
*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.
(on selected models)
Warning: Do not install on combustible flooring. 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.
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-R Rev 2/11
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