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 difficulty 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.
COMPLETED INSTALLATION TYPICAL Condensate Drain Access Cover (See Figure 15, p.
Read and follow all safety messages and instruc ons in this manual. This is the safety alert symbol. It is used to alert you to poten al physical injury hazards. Obey all safety messages that follow this symbol to avoid possible property damage, serious injury or death. Do not remove any permanent instruc ons, labels, or the data plate from either the outside of the water heater or on the inside of the access panels. Keep this manual near the water heater.
SAFETY IMPORTANT SAFETY INFORMATION T o reduce the risk of property damage, serious injury or death, read and follow the precau ons below, all labels on the water heater, and the safety messages and instruc ons throughout this manual.
According to a na onal standard American Society of Sanitary Engineering (ASSE 1070) and most local plumbing codes, the water heater’s thermostat should not be used as the sole means to regulate water temperature and avoid scalds. Properly adjusted Thermosta c Mixing Valves installed at each point-of-use allow you to set the tank temperature to a higher se ng without increasing risk of scalds.
GETTING STARTED Review all of the instruc ons before you begin work. Improper installa on can damage the water heater, your home and other property, and can present risks of serious injury or death. GETTING STARTED 1 Figure 1 - Flexible connectors use compression fittings and do not require soldering. Check with your local and state authori es for any local or state codes that apply to your area.
INSTALLATION ✓ Follow these steps for proper installa on: Water pressure increase caused by thermal expansion ✓ Verify that your home is equipped and up-to-date for proper opera on Installing a new water heater is the perfect me to examine your home’s plumbing system and make sure the system is up to current code standards. There have likely been plumbing code changes since the old water heater was installed.
INSTALLATION INSTALLATION BACKGROUND: Water expands when heated, and the increased volume of water must have a place to go, or thermal expansion will cause large increases in water pressure (despite the use of a Pressure Reducing Valve on the home’s main water supply line). The Safe Drinking Water Act of 1974 requires the use of backflow preventers and check valves to restrict water from your home reentering the public water system.
INSTALLATION 3 The floor can support the weight of a full water heater. Table 1 Capacity Filled Weight (lbs) 50 Gallon 573 66 Gallon 796 80 Gallon 921 Your area is not prone to earthquakes. If it is, use special straps as required by local building codes. 4 NOTICE: The state of California requires bracing, anchoring, or strapping the water heater to avoid its moving during an earthquake. Contact local u li es for code requirements in your area, visit h p://www.dsa.dgs.ca.
INSTALLATION Step 3: Removing the old water heater Read each installa on step and decide if you have the necessary skills to install the water heater. Only proceed if you can safely perform the work. If you are not comfortable, have a qualified person perform the installa on. Locate the water heater’s circuit breaker and turn it OFF (or remove the circuit’s fuses). 1 2 On the old water heater, remove the electrical junction box access panel.
INSTALLATION Installing the new water heater Completely read all instrucons before beginning. If you are not sure you can complete the installa on, DO NOT RETURN THIS UNIT TO THE STORE. Seek assistance from any of the following sources: 1 • Schedule an appointment with a qualified person to install your water heater. • Call our Technical Assistance Hotline at 1-800-527-1953 2 3 Install a suitable drain pan that is piped to an adequate drain.
INSTALLATION Condensate Drain Access Cover Primary Drain Connection Secondary Drain Connection Overflow Slot Condensate Pump Wiring Loop 22 AWG-White (Loop Located Close to the Drain Connections) Figure 15 - Condensate Pump Wiring INSTALLATION Step 6: Install Condensate Drain Lines: NOTE: When making condensa on connec ons to the primary connecon DO NOT over ghten! These connec ons should be HAND TIGHTENED ONLY. Over ghtening could crack or damage the condensate drain pan.
INSTALLATION potable water. Use only full-flow ball or gate valves. Other types of valves may cause excessive restric on to the water flow. Step 9: Connect the water supply Install a Thermosta c Mixing Valve at each point-of-use (for example, kitchen sink, bathroom sink, bath, shower). Consult the valve manufacturer’s instruc ons or a qualified person. Determine the type of water pipes in your home. Most homes use copper water pipes, but some use CPVC or cross-linked polyethylene (PEX).
INSTALLATION IF YOU HAVE COPPER PIPES: If your home has copper water pipes, you can solder the water pipe connecons or use compression fi ngs which don’t require soldering. Compression fi ngs are easier to install than soldering pipe. Check with local plumbing officials to determine what types of pipe materials are suitable for your loca on. Do not use lead-based solder.
INSTALLATION Open a hot water faucet and allow the water to run un l it flows with a full stream. 4 Let the water run full stream for three full minutes. 5 Close the hot water faucet and replace the aerator. Check inlet and outlet connecons and water pipes for leaks. Dry all pipes so that any drips or leaks will be apparent. Repair any leaks. Almost all leaks occur at connecons and are not a tank leak.
INSTALLATION Operation The water heater is now ready for normal operation. To keep your water heater working safely and efficiently and extend its life, perform maintenance as described in maintenance section beginning on page 25. Start-up and Opera on NOTE: The default opera ng mode is Hybrid, to select a different mode see Opera ng Modes sec on on page 20. INSTALLATION PRIOR TO BEGINNING OPERATION: Air filter is factory installed with tabs oriented down for shipping.
INSTALLATION Understand how to use the User Interface Module to set the various modes and func ons. 1 Hybrid Mode is the recommended Opera ng Mode. Understand the various Opera ng Modes and which mode may be best, based on ambient temperature and hot water demands. 2 Understand the importance of rou ne inspec on/ maintenance of the condensate drain pan and lines. This is to prevent any possible drain line blockage resul ng in the condensate drain pan overflowing.
INSTALLATION Hybrid Mode This is the default, recommended setting, combining high energy efficiency with reduced recovery time. This mode uses the heat pump as the primary heating source. The heating element will heat water if demand exceeds a predetermined level so that the set point temperature can be recovered more quickly. INSTALLATION Electric Mode The water heater functions as a conventional electric unit, relying on only the elements for heat.
INSTALLATION 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) xxxx x xxxx x xxxx x xxxx x Union Temperature and Pressure Relief Valve Union Shut-off Valve (Hot) 1/2” Flexible Secondary Condensate Tubing Untempered Water Outlet Hot (Outlet) Optional Mixing Valve - Follow the Mixing Valve’s Manufacturer’s Installation Instructions. (Set to 120°F / 48.
DIAGNOSTIC CODES DISPLAY SHOWS INDICATES “-”,”--”,”---” Unit is doing a system diagnostic. ICE Heat pump is in defrosting cycle. HPO Ambient temperature 45°F-120°F, average tank temperature of 59°F or less. EUC Upper element is not functioning CORRECTIVE ACTION Normal operation--no action 1. 2. ELC Lower element is not functioning 1. 2. Turn off power at the circuit breaker/fuse box and check for a loose connection at the element.
DIAGNOSTIC CODES DISPLAY SHOWS EoF (If Accessory Condensate Pump is installed) INDICATES CORRECTIVE ACTION Condensate pump failure. 1. 2. 3. 4. ECL Heat pump suction pressure is too low. EEE EEPROM failure ECC Heat pump compressor is not functioning. ECE Power supply error. Check to see if accessory condensate pump is plugged in and has power. Also check circuit breaker/fuse box and GFCI (if used). If error persists, proceed to the next step. Check condensate pump outlet tube for blockage.
TROUBLESHOOTING CHART PROBLEM NO HOT WATER POSSIBLE CAUSE(S) 1. No power to the water heater (No lights on the unit are on). 1. Check for blown fuse or tripped breaker. Restore power to unit. 2. Unit in Vacation mode 2. 3. ECO open 3. 4. 4. 6. 7. Hot water usage pattern exceeds the capability of the water heater in current mode Non-functioning upper temperature sensor Faulty thermostatic mixing valve. Leak in plumbing system Press Mode/Enter button and return to desired operating mode.
TROUBLESHOOTING CHART PROBLEM CORRECTIVE ACTION 1. Excessive water pressure 1. 2. Add or service a thermal expansion tank. Non-functioning Temperature & Pressure Relief Valve Debris under valve seat. 2. 3. 4. 3. 4. Check water supply inlet pressure. If higher than 80 PSIG, install a pressure reducing valve (50-60 PSIG is the recommended pressure.) See “Water Pressure Increase Caused by Thermal Expansion” section on page 7.
TROUBLESHOOTING WARNING! Working near an energized circuit can result in severe injury or death from electrical shock. WARNING! When you are finished, be sure all covers are secured to reduce the risk of fire and electric shock. No Hot Water The most likely reasons for an electric water heater to produce NO hot water are: Figure 26 - Use a non-contact circuit tester to check for electrical power.
TROUBLESHOOTING 1 2 Reset Button • The ECO was not tripped if you didn’t hear a click. In that case it should be checked by a qualified person. • Replace the insulation and the upper access panel. • Turn the power back on to the water heater. WARNING! Be sure all covers are secured to reduce the risk of fire and electric shock. Figure 28 - Energy Cut Off (ECO) button The Energy Cut Off (ECO) shuts off power to the water heater’s elements if the temperature of the water in the tank gets too hot.
TROUBLESHOOTING WARNING! Because higher temperatures increase the risk of scalding, if you set the thermostat(s) higher than 120°F, Thermosta c Mixing Valves at each point-of-use are par cularly important (page 4). Water Heater Sounds During the normal operation of the water heater, sounds or noises may be heard. These noises are common and may result from the following: • • Normal expansion and contraction of metal parts during periods of heat-up and cool-down.
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, consider replacing it with a larger model. If the water heater is in good condi on, you may be able to meet your families hot water needs with the exis ng water heater by installing Thermosta c Mixing Valves at easch point-of-use and then se ng the temperature to a higher se ng on the UIM. See “Step 12” on page 16.
MAINTENANCE Rou ne Maintenance Rou ne maintenance will help your water heater last longer and work better. If you cant perform these rou ne maintenance tasks yourself, contact a qualified person. Water Heater Maintenance A er the first six months, drain and flush the water heater and inspect the anode rod. Depending on the hardness of your water, repeat this process at least annually, or more frequently if needed. From me to me you may need to replace a hea ng element or a thermostat.
MAINTENANCE Anode Rod. The anode rod is a sacrificial metal rod that helps reduce corrosion and premature failure (leaks) in the tank. The anode rod is a consumable item. Inspect the anode rod a er the first six months of opera on when you drain and flush the tank. Replace the anode rod if it is substan ally worn out or depleted. Therea er, inspect the anode rod annually or more frequently if needed. If you use a water so ener, your anode rod will deplete faster than normal.
MAINTENANCE 3 Open a hot water faucet and let the hot water run un l it is cool. Make sure the new element is the correct replacement by referring to the water heater’s data plate for voltage and wa age informa on. 8 Clean the threads in the tank opening with a rag. Insert the new element equipped with a rubber gasket. NOTE: Use a drop of hand dishwashing liquid to lubricate the gasket to help avoid damaging the gasket as it is being ghtened. Tighten with an element wrench.
MAINTENANCE • A replacement ECO (available by calling the number in the repair parts list located on page 30). A business card to check the gap between the ECO and tank. • Tape and a permanent marker to mark the wires • A flat blade and a Phillips screwdriver Steps for Replacing the ECO: 1 Turn the power OFF at the circuit breaker or remove fuses. NOTICE: It is not necessary to drain the tank to replace an ECO. Open the electrical junc on box the side of the water heater.
MAINTENANCE Damage caused by corrosive water conditions, mineral deposits, or other problems can only be determined when a qualified person removes and inspects the valve and its components. • Note that a dripping T&P Relief Valve is usually caused by the home’s water pressure being too high or the lack of a Thermal Expansion Tank. If your T&P Relief Valve drips refer to “Drips from T&P Relief Valve Discharge Pipe” section on page 24.
REPAIR PARTS ILLUSTRATION REPAIR PARTS LIST ITEM PARTS DESCRIPTION NO.
NOTES NOTES 34 • Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide
NOTES NOTES Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide • 35
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