A.O. Smith EES - 120 User manual

Innovation has a name.
EES
Electrical residential /
light commercial water heater
EES - 6/15/20/30/40/52/66/80/120
Vertical electric water heater for residential / light commercial
applications • One or two replaceable Incoloy-sheathed elements
(depending on the model) • Each element is provided with an
independent control thermostat (adjustable: 43 - 77 °C) • Secondary
protection is provided by a high-limit thermostat with manual
reset • PermaGlas® Ultra Coat™ second-generation glass coating
technology to prevent corrosion • Replaceable magnesium anode
• Optional ancillaries: Unvented kits • Destrati cation pump kit
• Powered anodes • Time controller • Alternate kW loadings

EES
Technical specications
Electrical data
Input kW 2.0 2.0 2.0 3.0 3.0 3.0 3.0 3.0 3.0
Current A 8 8 8 8 8 8 8 8 8
Elements - 1 1 1 2 2 2 2 2 2
Power supply VAC/Hz 230 Vac (-15/+10%)/50 Hz (+/-1HZ)
Draw-off capacity
Storage capacity l 25 55 75 115 155 190 250 300 450
Max. temperature setting °C 77 77 77 77 77 77 77 77 77
30 min. ∆T=44°C l 41 70 89 136 174 208 265 313 456
60 min. ∆T=44°C l 61 90 109 165 204 237 294 342 485
90 min. ∆T=44°C l 81 109 128 195 233 266 324 371 515
120 min. ∆T=44°C l 100 129 148 224 262 296 353 401 544
Continuous ∆T=44°C l/h 39 39 39 59 59 59 59 59 59
Heating-up time ∆T=44°C min. 38 84 115 118 159 194 256 307 460
30 min. ∆T=50°C l 36 62 78 120 153 183 233 275 401
60 min. ∆T=50°C l 54 79 96 146 179 209 259 301 427
90 min. ∆T=50°C l 71 96 113 171 205 234 285 327 453
120 min. ∆T=50°C l 88 113 130 197 231 260 311 353 479
Continuous ∆T=50°C l/h 34 34 34 52 52 52 52 52 52
Heating-up time ∆T=50°C min. 44 96 131 134 180 221 291 349 523
30 min. ∆T=55°C l 33 56 71 109 139 166 212 250 365
60 min. ∆T=55°C l 49 72 87 132 163 190 235 274 388
90 min. ∆T=55°C l 64 87 103 156 186 213 259 297 412
120 min. ∆T=55°C l 80 103 118 179 210 237 282 321 135
Continuous ∆T=55°C l/h 31 31 31 47 47 47 47 47 47
Heating-up time ∆T=55°C min. 48 106 144 147 198 243 320 384 576
General
Anodes - 1
Maximum working pressure bar 8
Maximum weight kg 38 76 102 151 198 238 314 380 575
Shipping data
Weight empty kg 13 21 27 36 43 48 64 80 125
Weight incl. packaging kg 14 23 30 42 49 55 72 90 137
Width packaging mm 420 420 520 580 580 580 620 680 770
Height packaging mm 430 870 870 1000 1190 1440 1600 1620 1710
Depth packaging mm 420 420 520 650 650 650 680 740 840
EES 6 EES 15 EES 20 EES 30 EES 40 EES 52 EES 66 EES 80 EES 120

EES 6-20 EES 30-120
Vented
Unvented
EES 6-20 EES 30-120
EES 6-20 EES 30-120
EES
Dimensions
EES
Installation diagrams
A 400 825 820 930 1110 1370 1530 1540 1620
D 360 360 460 520 520 520 560 610 710
F 75 75 75 930 1110 1370 1530 1540 1620
R - - 100 110 110 110 110 110 110
S 270 700 680 730 970 1210 1360 1330 1385
1 Cold water 3/4-14 NPT
2 Hot water 3/4-14 NPT
3 T&P valve 3/4-14 NPT
4 Tank drain valve 3/4-14 NPT
(n/a for EES 6/15/20)
Dimensions in mm. All EES water heaters receive a  ve years
warranty on the tank and one year on parts.
EES 6 EES 15 EES 20 EES 30 EES 40 EES 52 EES 66 EES 80 EES 120
1 Pressure reducing valve
3 T&P valve
4 Stop valve
5 Non-return valve
9 Drain valve
11 Isolating valve
15 Expansion relief valve
16 Expansion vessel
17 Three way valve
18 Water tank
19 Float valve
A Cold water
B Hot water
E Overflow pipe
H Expansion vent pipe
A.O. Smith unvented system
kits utilise combination valves.
Further installation and
connection details can be
found in the Installation &
Commissioning Manual.

www.aosmithinternational.com
Data subject to change INT/0808/EES/01 Terms and conditions apply, please refer to our website.
1 Standard electrical supply
2 Safety thermostat
3 Control thermostat with
selector switch
4 Heating elements
5 Control themostat
6 Off peak electrical supply
For the parts numbers of components
please refer to the “Maintenance and
accessories” chapter.
EES
Electrical diagrams
EES 6-20
EES 30-120