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A.O. Smith 318257-000 - page 1
1 A.O. Smith – V oltex™ Hybrid Electric Heat Pump W ater Heater Installation Instructions and Use & Care Guide T o obtain technical, warranty or service assistance during or after the installation of this water heater , call toll free 1-800-527-1953 When calling for assistance, please have the following information ready: 1. Model number 2. ...
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A.O. Smith 318257-000 - page 2
2 Y our safety and the safety of others are very important. We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety messages. This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you and others. All safety messages will follow the safety aler ...
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A.O. Smith 318257-000 - page 3
3 INST ALLING YOUR W A TER HEA TER Consumer Information This water heater should be installed in accordance with the local code authority having jurisdiction, the power company or electric utility , and this installation manual. In the absence of local code requirements, follow the regulations set forth in the latest edition of The National Electri ...
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A.O. Smith 318257-000 - page 4
4 Figure 3 Residential Garage Installation Vehicle Stop Drain Drain Pan NOTE: The water heater shall be located so it is not subject to physical damage by moving vehicles or area fl ooding. State of California NOTE: The water heater must be braced, anchored, or strapped to avoid moving during an earthquake. Contact local utilities for code require ...
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A.O. Smith 318257-000 - page 5
5 W ater System Piping Piping, fi ttings, and valves should be installed according to the installation drawing (Figure 4). If the indoor installation area is subject to freezing temperatures, the water piping must be properly insulated. W ater supply pressure should be 50-60 PSIG and not exceed the maximum 80 PSIG. If the supply line pressure exce ...
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A.O. Smith 318257-000 - page 6
6 Please note the following: • The system should be installed only with piping that is suitable for potable (drinkable) water such as copper , CPVC, or polybutylene. This water heater must not be installed using iron piping or PVC water piping. • Use only pumps, valves, or fittings that are compatible with potable water . • Use only full flow ...
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A.O. Smith 318257-000 - page 7
7 T o reduce the risk of excessive pressures and temperatures in this water heater , install temperature and pressure relief protective equipment required by local codes, but no less than a combination temperature and pressure relief valve certi fi ed by a nationally recognized testing laboratory that maintains periodic inspection of the productio ...
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A.O. Smith 318257-000 - page 8
8 Locate the hot water (outlet) & cold water (inlet) pipes 4. to the water heater . Locate the slit running the length of a section of pipe 5. insulation. Spread the slit open and slip the insulation over the 6. cold water (inlet) pipe. Apply gentle pressure along the length of the insulation to ensure that it is fully seated around the pipe. A ...
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A.O. Smith 318257-000 - page 9
9 Figure 8A Junction Box Ground Wire Conduit (Field Connection) Black Wire Red Wire Green Ground Wire Red Black Approved Connectors Figure 9 Wiring Diagram Overload Protection T o 240v 1 Phase Power supply Electrical Service ground L1 L2 Circuit Breaker Ground Wire Green Connecting the Condensate Pump Over fl ow Shut Off Switch T urn off power to ...
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A.O. Smith 318257-000 - page 10
10 W ater Heater Location Centrally located with the water piping system. □ The fl ooring beneath the water heater must be able to □ support the weight of the water heater when fi lled with water (967 lbs. full). Located indoors (such as a basement or garage) □ and in a vertical position. Sheltered from freezing temperatures. Provisions mad ...
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A.O. Smith 318257-000 - page 11
11 OPERA TING YOUR W A TER HEA TER Before Using Make sure the water heater has been properly 1. installed. See “Installing Y our Water Heater” section. Make sure the air filter is correctly seated, as it may 2. shift during shipping or installation. See “Repair Parts Illustration” section. Completely fill the tank with water (See “W ater ...
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A.O. Smith 318257-000 - page 12
12 Adjusting the User Interface Module/Operational Modes °F/°C LOCK HEAT PUMP ELEMENT EFFICIENCY F VACA TION ELECTRIC HYBRID EFFICIENCY Power Button: On - Green Standby - Red T emperature Down (Decrease) Button T emperature Up (Increase) Button Operational Mode Buttons Wa t e r T emperature Set Point W ater Heater Mode/Status Indicator W ater Hea ...
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A.O. Smith 318257-000 - page 13
13 Operational Conditions Powered Anode Operation T o shelter the glass-lined water tank from corrosion through electrolysis, this water heater is equipped with a non-sacrificial powered anode which should not need to be replaced under normal operating conditions. If the powered anode malfunctions it should be replaced by a qualified technician. IM ...
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A.O. Smith 318257-000 - page 14
14 MAINTENANCE OF YOUR W A TER HEA TER T emperature and Pressure Relief V alve Manually operate the temperature and pressure relief valve at least once a year to make sure it is working properly . T o prevent water damage, the valve must be properly connected to a discharge line which terminates at an adequate drain. Standing clear of the outlet (d ...
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A.O. Smith 318257-000 - page 15
15 Remove the access cover(s), then remove the foam 4. insulation block. Remove the protective plastic cover(s) over the 5. elements from their attachment point. Disconnect the electrical wires from the heating 6. element(s) by loosening the screws (Figure 12). Remove the screw-in element(s) by turning the element(s) counterclockwise with a 1-1/2 i ...
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A.O. Smith 318257-000 - page 16
16 DIAGNOSTIC CODES DISPLA Y SHOWS INDICA TES CORRECTIVE ACTION UPPER ELEMENT CONNECT F AUL T 1. Upper element is not functioning T urn off power at the circuit breaker/fuse 1. box and check for a loose connection at the element. For access directions see “Heating Element Replacement” section. If error persists proceed to the next step. Replace ...
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A.O. Smith 318257-000 - page 17
17 TROUBLESHOOTING CHART PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION NO HOT W A TER Hot water usage pattern exceeds the 1. capability of the water heater in current mode No power to the water heater 2. Unit in standby 3. Unit in V acation mode 4. High temperature limit switch open 5. Non-functioning upper temperature 6. sensor Change to different m ...
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A.O. Smith 318257-000 - page 18
18 REP AIR P ART ILLUSTRA TION ITEM NO. P ARTS DESCRIPTION 1 Upper Access Cover 2 Lower Access Cover 3 Upper Element (4500 W atts) 4 Lower Element (2000 W atts) 5 Energy Cut-Off (ECO) Switch 6 T emperature & Pressure Relief V alve (T&P) 7 Dip T ube (at hot water outlet) 8 Powered Anode Rod 9 User Interface Module 10 Air Filter 11 Air Inlet ...
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A.O. Smith 318257-000 - page 19
19 NOTES ...
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A.O. Smith 318257-000 - page 20
20 Copyright © 2010 A.O. Smith Corporation. All rights reserved. ...
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