Oil-Fired
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Outlet |
| Inlet |
Combined |
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Appliance |
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Outlet |
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T&P |
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Relief |
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Valve |
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Aquastat |
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Connection | B | |
Drain |
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Valve/ |
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Return |
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| E |
| 20e |
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| D | |
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Outlet | Inlet | |
Auxiliary |
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Outlet: |
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32EC/BCS, |
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71EC, |
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51EC/BCS |
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T&P |
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Relief |
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Valve |
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Aquastat |
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Connection | B | |
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71E | A | |
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50ES |
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Drain |
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Valve/ |
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Return: |
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71E |
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Drain |
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Valve/ |
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Return: |
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32E, |
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50ES, 51E | E | |
32E, 50ES, 51E, 71E | ||
| C |
| D |
Outlet |
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| Outlet | Inlet |
Auxiliary |
| Auxiliary |
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Outlet: |
| Outlet |
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40BCSE |
| T&P |
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| Relief |
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T&P |
| Valve |
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Relief |
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Valve |
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| Aquastat |
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| B | Connection |
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Aquastat |
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Connection | A |
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| Return: | A | |
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| 120E, | |
Inlet |
| 190E, |
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| 241E, |
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| 361E |
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Drain |
| Drain |
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Valve/ |
| Valve/ |
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Return |
| Return |
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| E |
| E |
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| 33E, 40E |
| 120E |
| Model | Storage | Rated Input | Recovery | Max. Temp | Inlet | Outlet | Return |
| Dimensions |
| Shipping Weight | ||||
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| @ ∆ 90°F | Setting | Pipe | Pipe | Pipe |
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| (GPH) | (°F) | Dia. | Dia. | Dia. |
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| BTH/HR | GPH | A | B | C | D | E | Standard | ASME | ||||||
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20e | 20 | 60,000 | 0.43 | 66 | 160 | 3/4” | 3/4” | 3/4” | 38 1/4” | 20” | 6” | 11” | 14 3/4” | 148 | N/A |
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32E | 32 | 104,000 | 0.75 | 114 | 160 | 3/4” | 3/4” | 3/4” | 51” | 20” | 6” | 11” | 17” | 272 | N/A |
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33E | 33 | 104,000 | 0.75 | 111 | 160 | 3/4” | 3/4” | 3/4” | 43 1/4” | 24” | 6” | N/A | 17 1/4” | 278 | N/A |
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40E | 40 | 126,000 | 0.90 | 136 | 160 | 3/4” | 3/4” | 1” | 61” | 20” | 6” | N/A | 18” | 301 | N/A |
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50ES | 50 | 140,000 | 1.00 | 151 | 160** | 1” | 1 1/2”* | 1 1/2” | 52” | 26” | 6” | 13 1/2” | 18 1/2” | 369 | N/A |
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51E | 50 | 152,000 | 1.10 | 161 | 160** | 1” | 1” | 3/4” | 59” | 24” | 6” | 11” | 18” | 330 | N/A |
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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 |
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120E | 113 | 155,000 | 1.10 | 163 | 180 | 1” | 2”* | 2” | 67” | 31 1/2” | 6” | 19” | 22” | 709 | N/A |
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NOTE: 32E First Hour Rating = 180 Gallons |
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*Nipple not included |
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**Optional setting, contact factory |
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***Weight does not include burner and controls |
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T&P Valve: Factory Installed | (on selected models) | |
Drain Valve: Factory Installed Brass Valve | ||
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Standard Voltage (all): 120V, 60 Hz, 1P |
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Pressures (all): Working Pressure, 150 psi; Testing Pressure, 300 psi |
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ASHRAE: All Bock Products Meet or Exceed Current ASHRAE Standards. |
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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
www.bockwaterheaters.com
