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Installa on Instruc ons and
Use & Care Guide
Heat Pump Water Heater
DO NOT RETURN THIS UNIT TO THE STORE
Read this manual and the labels on the water heater before you install,
operate, or service it. If you have diffi culty following the direc ons, or
aren't sure you can safely and properly do any of this work yourself:
• Call our Technical Assistance Hotline at 1-800-527-1953 . We can help you with
installation, operations, troubleshooting, or maintenance. Before you call, write
down the model and serial number from the water heater's data plate.
Incorrect installa on, opera on, or service can damage the water heater, your house
and other property, and present risks including fi re, scalding, electric shock, and
explosion, causing serious injury or death.
LOW LEAD
CONTENT
Table of Contents Page
IMPORTANT SAFETY INFORMATION ................................. 3
GETTING STARTED ............................................................ 6
INSTALLATION ................................................................... 7
DIAGNOSTIC CODES ........................................................ 20
TROUBLESHOOTING CHART ........................................... 22
MAINTENANCE ............................................................... 25
REPAIR PARTS ILLUSTRATION .......................................... 30
NOTES ............................................................................. 31
Keep this manual in the pocket on heater for future reference whenever maintenance, adjustment or service is required.
Hybrid Electric
Retain your original receipt as proof of purchase.
April 2015
100264133
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Summary of Contents for A.O. Smith Voltex series
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Page 1: Table Of Contents
Installa on Instruc ons and Use & Care Guide Hybrid Electric Heat Pump Water Heater DO NOT RETURN THIS UNIT TO THE STORE Read this manual and the labels on the water heater before you install, operate, or service it. If you have diffi culty following the direc ons, or aren’t sure you can safely and properly do any of this work yourself: •... - Page 2 COMPLETED INSTALLATION TYPICAL Condensate Drain Air Filter Access Cover (See Figure 15, p.11) Connectivity Port User Interface Module (UIM) Temperature and Shut-off Valve Pressure Relief Valve (Hot) Upper Element and ECO (Outlet) Primary Condensate Drain (3/4” PVC) Discharge Pipe (Do Not Cap or Plug) Thermal Expansion Tank Lower Element Cold...
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Page 3: Important Safety Information
IMPORTANT SAFETY INFORMATION Read and follow all safety messages and instruc ons in Important informa on to keep this manual. Fill out this sec on and keep this manual in the pocket of the water This is the safety alert symbol. It is used to alert you to heater for reference. - Page 4 IMPORTANT SAFETY INFORMATION o reduce the risk of property RISKS DURING OPERATION For informa on about changing the damage, serious injury or death, factory thermostat se ng(s), refer to Scalding Risk read and follow the precau ons below, the “Adjus ng Temperature” sec on in This water heater all labels on the water heater, and this manual (“Step 13”...
- Page 5 IMPORTANT SAFETY INFORMATION According to a na onal standard • Keep the water heater from becom- Maintain the T&P Relief Valve properly. American Society of Sanitary Engineer- ing wet. Immediately shut the water Follow the maintenance instructions ing (ASSE 1070) and most local plumbing heater off and have it inspected by a provided by the manufacturer of the codes, the water heater’s thermostat...
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Page 6: Getting Started
GETTING STARTED Review all of the instruc ons • Teflon® tape or pipe joint com- pound approved for potable water before you begin work. Improper installa on can • Tools to make the electrical connec- damage the water heater, your home tions (for example, screwdrivers, and other property, and can present wire strippers) -
Page 7: Installation
INSTALLATION ✓ Follow these steps for proper Water pressure installa on: increase caused by Step 1: thermal expansion ✓ Verify that your Verify that you have a properly sized Thermal Expansion Tank (Figure 7). We home is equipped recommend installing an expansion and up-to-date for tank if your home does not have one. - Page 8 INSTALLATION BACKGROUND: Water expands when WARNING! Even if the water heater thermostat is set to a rela vely low heated, and the increased volume temperature, hot water can scald. of water must have a place to go, or Install Thermosta c Mixing Valves at thermal expansion will cause large each point-of-use to reduce the risk of increases in water pressure (despite...
- Page 9 INSTALLATION The loca on has adequate The air fi lter, condensa on The loca on is not prone to space (clearances) for period- drain and controls must be physical damage by vehicles, ic servicing. For op mal water easily accessable for opera- fl...
- Page 10 INSTALLATION Step 3: WARNING! Be sure the water runs When the tank is empty, cool before draining the tank to re- disconnect the Temperature & Removing the old water duce the risk of scalding. Pressure (T&P) Relief Valve discharge pipe. You may be able to heater Connect a garden hose to reuse the discharge pipe, but do not...
- Page 11 INSTALLATION Step 4: proper condensate drain piping. Locate the white 22 AWG wire loop inside the condensate • There is adequate access and space Installing the new around the water heater for future drain access compartment by maintenance. A minimum clearance removing the 4 screws a aching the water heater of 6 inches must be maintained...
- Page 12 INSTALLATION • Slope the condensate drain lines WARNING! To avoid serious injury Condensate Drain Access Cover or death from explosion, install a T&P toward the inside fl oor drain or Primary Drain Relief Valve according to the following condensate pump. Connection instruc ons: Secondary Drain...
- Page 13 INSTALLATION Terminate the discharge pipe potable water. Use only full-fl ow ball Step 9: a maximum of six inches or gate valves. Other types of valves Connect the water above a fl oor drain or outside may cause excessive restric on to the supply the building.
- Page 14 INSTALLATION IF YOU HAVE COPPER PIPES: NOTICE: This water heater model con- tains an outlet connec on (J-tube) that If your home has copper water pipes, has an orienta on mark that must line you can solder the water pipe connec- up with arrow (in a 12 o’clock posi on).
- Page 15 INSTALLATION Open a hot water faucet and This water heater requires a A. The length in any ground return path allow the water to run un l it 240/208 VAC single phase 30 does not exceed 6 feet. fl ows with a full stream. amp power supply, at 60Hz.
- Page 16 INSTALLATION Operation opera onal modes see “Adjus ng the To adjust the water heater’s tempera- User Interface Module/Opera onal ture se ng: Modes” sec on. The water heater is now ready for • The water temperature setting can normal operation. To keep your water be adjusted by using the Up and Step 12: heater working safely and efficiently...
- Page 17 INSTALLATION Post Installa on Review Water Temperature Ad- unit has the ability to use one element (upper or lower) and the heat pump justment Understand how to use the simultaneously to help improve User Interface Module to set recovery. This transi on is seamless The water temperature can be the various modes and and will go unno ced.
- Page 18 INSTALLATION Hybrid Mode - NOTE: When Vacation Mode is Heat pump defrosting indication: selected, the vacation timer will be This is the default, recommended • There will be frost accumulat- displayed. Press the Up and Down setting, combining high energy ing on the evaporator when the button to modify the timer to desired efficiency with reduced recovery time.
- Page 19 INSTALLATION User Interface Module (UIM) Display Figure 29 - Massachusetts: Install a vacuum relief in cold water line per section 19 MGL 142. Optional Heat Trap Piping Vacuum Relief Valve (when required by local code) Union Cold Water Union Inlet Valve Temperature and Shut-off Valve (Hot) Pressure Relief Valve...
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Page 20: Diagnostic Codes
DIAGNOSTIC CODES DISPLAY SHOWS INDICATES CORRECTIVE ACTION “-”,”--”,”---” Unit is doing a system diagnostic. Heat pump is in defrosting cycle. Normal operation--no action Ambient temperature 45°F-120°F, average tank temperature of 59°F or less. Upper element is not Turn off power at the circuit breaker/fuse box and functioning check for a loose connection at the element. - Page 21 DIAGNOSTIC CODES DISPLAY SHOWS INDICATES CORRECTIVE ACTION Condensate pump failure. 1. Check to see if accessory condensate pump is plugged in and has power. Also check circuit breaker/fuse box and (If Accessory Condensate GFCI (if used). If error persists, proceed to the next step. Pump is installed) 2.
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Page 22: Troubleshooting Chart
TROUBLESHOOTING CHART PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION NO HOT WATER 1. No power to the water heater (No 1. Check for blown fuse or tripped breaker. lights on the unit are on). Restore power to unit. 2. Unit in Vacation mode 2. - Page 23 TROUBLESHOOTING CHART PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION DRIP FROM TEMPERATURE & 1. Excessive water pressure Check water supply inlet pressure. If higher than 80 PSIG, install a pressure reducing PRESSURE RELIEF VALVE valve (50-60 PSIG is the recommended pres- (page 24) sure.) 2.
- Page 24 TROUBLESHOOTING WARNING! Working near an ener- Check the top two screws of gized circuit can result in severe injury the ECO using a non-contact or death from electrical shock. circuit tester and confi rm that power is off ( screw terminals 1 and 3 WARNING! When you are fi...
- Page 25 TROUBLESHOOTING Check/Reset Energy Cut Off • The ECO was not tripped if you sure or the internal bladder may be didn’t hear a click. In that case it ECO Bu on. defec ve. Refer to the instruc ons that should be checked by a qualified came with the Thermal Expansion Tank person.
- Page 26 TROUBLESHOOTING WARNING! Because higher tempera- A nonfunc oning thermostat or a If the hot water is simply not warm tures increase the risk of scalding, if shorted hea ng element can cause enough, there are several possible you set the thermostat(s) higher than extremely hot water.
- Page 27 TROUBLESHOOTING Undersized water heater. If your water heater runs out of hot water too quickly, it may be too small for your needs. If the water heater is old, con- sider replacing it with a larger model. If the water heater is in good condi on, you may be able to meet your fami- lies hot water needs with the exis ng water heater by installing Thermosta c...
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Page 28: Maintenance
MAINTENANCE Rou ne Maintenance • In areas with very hard water, Connect a garden hose to the remove and check the heating drain valve and place the elements whenever you drain the other end of the hose in a Rou ne maintenance will help your tank. - Page 29 MAINTENANCE Anode Rod. The anode rod is a sac- Replacing the Hea ng often beveled and may slip. Inex- pensive element wrenches are rifi cial metal rod that helps reduce Element corrosion and premature failure (leaks) available at your local plumber sup- in the tank.
- Page 30 MAINTENANCE Open a hot water faucet and Make sure the new element is Once the element is success- let the hot water run un l it is the correct replacement by fully installed and there are no cool. referring to the water heater’s leaks, replace the power data plate for voltage and wa age wires, thermostat cover, insula on,...
- Page 31 MAINTENANCE • A replacement ECO (available by Disconnect the wires from the T&P Relief Valve Main- calling the number in the repair bad ECO and remove the ECO tenance parts list located on page 30). A from the metal moun ng clip. business card to check the gap Read and follow the opera ng and between the ECO and tank.
- Page 32 MAINTENANCE Damage caused by corrosive water Condensate Drain conditions, mineral deposits, or Maintenance other problems can only be deter- mined when a qualified person NOTE: Before a emp ng to clean the removes and inspects the valve and condensate drain pan or lines shut its components.
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Page 33: Repair Parts Illustration
REPAIR PARTS ILLUSTRATION REPAIR PARTS LIST ITEM PARTS DESCRIPTION Element Access Cover Element (4500 Wa s) Energy Cut-Off (ECO) Switch Temperature & Pressure Relief Valve (T&P) J-Tube (at hot water outlet; sizes for J-tubes are dependent upon capacity of water heater) Anode (Op onal for 50 and 66 gallon models) Controller Air Filter... -
Page 34: Notes
NOTES 34 • Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide... - Page 35 NOTES Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide • 35...
- Page 36 ®Tefl on is a registered trademark of E.I. Du Pont De Nemours and Company © 2015 A.O. Smith Corporation. All Rights Reserved.