American Standard HPWH50G-AS Owners And Operation Manual
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American Standard HPWH50G-AS Owners And Operation Manual

Residential electric heat pump water heater
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THIS UNIT REQUIRES EARTH CONNECTION. MAKE SURE THERE IS A RELIABLE CONNECTION BEFORE USAGE;
WARNING
OTHERWISE IT MAY CAUSE DEATH OR INJURY.
Please ask a certified electrician to install a reliable earth connection. Refer to page 1 .
Your safety is important to us!
OWNER'S AND OPERATION
Residential Electric Heat
Pump Water Heater
Before using your unit, please carefully
manual and keep it for future reference.
MANUAL
HPWH50G-AS
this

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  • Page 1 OWNER’S AND OPERATION MANUAL Residential Electric Heat Pump Water Heater HPWH50G-AS Before using your unit, please carefully this manual and keep it for future reference. THIS UNIT REQUIRES EARTH CONNECTION. MAKE SURE THERE IS A RELIABLE CONNECTION BEFORE USAGE; WARNING OTHERWISE IT MAY CAUSE DEATH OR INJURY.
  • Page 2 HEAT PUMP WATER HEATER PARTS NAMES Top Cover Electronic Control Fan Assembly Filter Front Shroud Rear Shroud Display Evaporator Temperature & Pressure Relief Valve Cover, Electric (Upper) Water Outlet Water Inlet Front Decorative Board Cover, Electric (Upper) Upper Heating Element (Lower) Drain valve Lower heating...

  • Page 3: Water Temperature Adjustment

    CONTENTS Safety Information Operating Instructions 4-10 Care and Cleaning 11-12 Troubleshooting Tips 13-25 IMPORTANT SAFETY INFORMATION. READ ALL INSTRUCTIONS BEFORE USING. For your safety, the information in this manual must be followed to minimize the risk of fire or explosion, electric shock, or to prevent property damage, personal injury, or death. Be sure to read and understand the entire Owner’s Manual before attempting to install or WARNING operate this water heater.

  • Page 4: Operating The Water Heater

    HEAT PUMP WATER HEATER The chart shown above may be used as a guide in determining the proper water temperature for your home. NOTE: Households with small children, disabled or elderly persons may require a 120°F or lower thermostat setting to prevent contact with HOT water. There is a Hot Water SCALD Potential if the control water temperature is set too DANGER high.

  • Page 5: Safety Controls

    If the water heater has been subjected to flood, fire, or physical damage, turn off power and water supplies to the water heater. WARNING Do not operate the water heater again until it has been thoroughly inspected by a qualified service technician. SAFETY CONTROLS The water heater is equipped with two temperature-limiting controls (TCO and TOD) that are located above the heating element in contact with the tank surface.
  • Page 6 HEAT PUMP WATER HEATER uto on r unct on seconds the pad and no other utoloc unct on unct on creen aver TURNING ON THE WATER HEATER oad h t ng oad h t ng ode 2 110°F. gh e perature ett ng 120°F, 120°F oc con...
  • Page 7 Auto Mode Icon This icon will be illuminated when the unit is on auto mode and will be darkened when the unit is not operating on auto mode. NOTE: When the unit is on auto mode this icon will flash slowly. Economic Mode Icon This icon will be illuminated when the unit is on economic mode and will be darkened when the unit is not on economic mode..

  • Page 8: To Adjust The Temperature

    HEAT PUMP WATER HEATER ABOUT THE WATER TEMPERATURE SETTING The temperature of the water in the water heater can be regulated by adjusting the temperature setting up or down using arrow keys on the control panel. Safety and energy conservation are factors to be considered when selecting the water temperature setting of the water heater.
  • Page 9 ADJUSTING THE WATER TEMPERATURE AND FUNCTION MODE This water heater defaults to the Hybrid operating mode. The Hybrid mode is the recommended setting for this water heater, but can be changed if desired. Eco Mode Eco is the most energy-efficient mode for this water heater. It takes heat from the surrounding air to heat the water. The time it takes to heat the water is longer in this mode, so it may NOT be ideal if you have a high-demand situ- ation such as a large household or company.

  • Page 10: Draining The Water Heater

    HEAT PUMP WATER HEATER Before manually operating the relief valve, make certain no one will be exposed to the hot water released by the valve. The water may be hot enough to create a DANGER scald hazard. The water should be released into a suitable drain to prevent injury or property damage.

  • Page 11: Cleaning The Filter

    Flushing Tank: A water heater’s tank can act as a settling basin for solids suspended in the water. It is therefore not uncommon for hard water deposits to accumulate in the bottom of the tank. To clean the tank of these deposits, open the drain valve located under the large decorative cover near the bottom of the unit and drain a few quarts of water from the water heater every month.
  • Page 12 HEAT PUMP WATER HEATER CLEARING THE CONDENSATION DRAIN TUBES There are two drain hoses that are attached to the back of the heater. If both of these get clogged, water will spill down the outside of the unit. The primary drain is intended to carry all condensate away. If it is clogged or if the hose is kinked, the condensate will exit from the secondary drain tube onto the floor.

  • Page 13: Installation Instructions

    INSTALLATION INSTRUCTIONS HPWH50G-AS The location chosen for the water heater must take into consideration the following: LOCAL INSTALLATION REGULATIONS This water heater must be installed in accordance with these instructions, local codes, utility codes, and utility company requirements or, in the absence of local codes, the latest edition of the National Electrical Code. It is available from consumers local libraries or can be purchased from the National Fire Prevention Association, Batterymarch Park, Quincy, MA 02169 as booklet ANSI/NFPA 70.

  • Page 14: Required Clearances

    HEAT PUMP WATER HEATER Route to open drain line should be at least 3/4” ID and pitched for proper drainage. A—Diameter of water heater plus 2” min. B—Maximum 2”. NOTE: Auxiliary catch pan MUST conform to local codes. Catch Pan Kits are available from the store where the water heater was purchased, your local home improvement store or any water heater distributor.

  • Page 15: Water Supply Connections

    INSTALLATION INSTRUCTIONS THERMAL EXPANSION The water heater should not be installed in a space where liquids which give off flammable vapors are used or stored. Determine if a check valve exists on the inlet water line. It may have been installed on the cold water line as a separate backflow prevention device, or it may be part of a pressure-reducing valve, water meter or water softener.
  • Page 16 HEAT PUMP WATER HEATER To electrical distribution panel Electrical junction box (use only copper conductors) Temperature & Pressure Relief Valve (shown in different location for clarity) Union Hot water outlet to fixtures Jacket access panel Union Shut-off valve To cold water supply Jacket Thermal...

  • Page 17: Relief Valve

    CONDENSATION DRAIN TUBES This unit has a condensation tray. The water collected in the tray drains out of the tube coming off the back of the unit. Two flexible hoses are attached to the two drain ports on the back of the unit. Attach one end of the longer 6’ hose to the lower drain port on the back of the unit, underneath the rear cover.

  • Page 18: To Fill The Water Heater

    HEAT PUMP WATER HEATER TO FILL THE WATER HEATER The tank must be full of water before heater is turned on. The water heater warranty does not cover damage or failure resulting from operation with an empty or partially empty tank. Make certain the drain valve is completely closed. Open WARNING the shut-off valve on the cold water supply line.
  • Page 19 INSTALLATION INSTRUCTIONS The manufacturer’s warranty does not cover any damage or defect caused by installation, attachment or use of any type of energy saving or other unapproved devices (other than those authorized by the manufacturer) into, onto or in conjunction with the water heater. The use of unauthorized energy saving devices may shorten the life of the water heater and may endanger life and property.
  • Page 20 HEAT PUMP WATER HEATER INSTALLATION INSTRUCTIONS Ceiling in Alcove 27” Mininum clearance above Heat Pump to allow air circulation Hot outlet is 3/4” NPT COLD inlet is 3/4” NPT ACCESSORIES Accessory name Quantity Image Purpose Owner’s comprehensive installation, safety & Installation &...
  • Page 21 NOTE: This guide recommends minimum branch circuit sizing based on the National Electric Code. Refer to wiring diagrams in this manual for field wiring connections. BRANCH CIRCUIT SIZING GUIDE Water Heater Recommended Over-Current Protection Wattage – Fuse or Circuit Breaker Amperage Rating – 208 V 240 V 277 V...

  • Page 22: Installation Checklist

    The unit will then remind the user to check that the tank has been filled with water; which is acknowledged by pressing POWER again. Elapsed Time HPWH50G-AS Actions Comments 0 to 1.5 minutes Unit is silent This 3 minute off-time prevents compressor damage.

  • Page 23: Before You Call Service

    BEFORE YOU CALL SERVICE Troubleshooting Tips: Save time & money! Review the chart below first & you may not need to call for service. Elapsed Time Possible Causes What to Do Water heater is noisy Fans are used to move air •...

  • Page 24: Before You Call For Service

    HEAT PUMP WATER HEATER BEFORE YOU CALL FOR SERVICE Problem Possible Causes What to Do • This is an unacceptable condition and must be Relief valve producing Pressure buildup by thermal corrected. Contact your water supplier or a expansion to a closed system. popping noise or draining.
  • Page 25 Notes...

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