Dry Fire Element Protection

Dry Fire is a term used to describe a heating element that is on and not fully submerged in water. This will result in permanent damage to the element. The dry ﬁre element protection algorithm is installed on this heat pump water heater and prevents damage to the heating elements in the event that power is

applied to the water heater without sufﬁcient water in the tank to cover the elements. This routine takes approximately four (4) minutes. If it is

determined that the element is not fully submersed in water, an error will be displayed on the user interface: LOW WATER LEVEL ALARM. The water heater will not operate while this fault is active and it must be

cleared before the water heater will operate. In order to clear the error, shut off power to the water heater, and purge all air from the water heater tank. This is done by opening all hot water taps in the building. Run the water until there is no air coming out with the water. Shut off all hot water taps. Apply power to the water heater. After four (4) minutes, dry ﬁre detection should be complete, the error should be cleared and the water heater should operate normally. If the LOW WATER LEVEL ALARM repeats, purge air from tank again by following the method outlined above.

Powered Anode Operation

Checking the Powered Anode for Proper Operation:

When dissimilar metals are in contact with water, a galvanic cell will likely result and corrosion of the metal components will occur. If left unchecked, corrosion will weaken the wall of a water heater tank which will eventually leak. Passive anodes are typically used to counteract this corrosion and extend tank life. Passive anodes erode over time and become less effective until they stop working all together, another type of protective device is a powered anode.

A powered anode is an active device that counteracts galvanic corrosion in the water heater tank. Unlike

a standard depleting anode, a powered anode does not lose effectiveness over time. The powered anode circuit is made up of an electronic control, a titanium anode rod, and the water heater tank. The electronic control monitors conditions in the tank and produces a voltage that will prevent galvanic corrosion from occurring. The titanium anode rod consists of two functional parts: A steel body which threads into the tank providing mechanical and electrical connection to the tank and a titanium rod that is electrically insulated

from the body. The voltage produced by the powered anode circuit is delivered to the titanium anode rod by a red wire connected to the tab that connects to the anode rod. Current ﬂows from the titanium anode rod, through the water and to the grounded tank wall. The powered anode circuitry will maintain the minimum voltage required to protect the tank steel.

Fault detection is built into the powered anode software. If a fault is detected, an error message will be displayed on the User Interface Module (UIM): “Powered Anode Fault”. By checking the fault code history, see “Accessing the Maintenance Display” (p.21), a speciﬁc fault code can be read to aid in isolating the cause. Refer to the “Fault Code Troubleshooting Guide” (p39-44) for the list of powered anode fault messages, what the messages indicate, possible causes, and corrective actions.

IMPORTANT: The anode protecting the tank requires power to the unit to operate. Do not shut off power to the unit for an extended period of time. If power must be turned off, drain the tank completely to minimize corrosion.

RESIDENTIAL HYBRID ELECTRIC HEAT PUMP WATER HEATER, HPE10260H045DV, HPE10280H045DV specifications

The American Water Heater HPE10280H045DV and HPE10260H045DV are pioneering residential hybrid electric heat pump water heaters designed to deliver energy-efficient performance while meeting the hot water demands of modern households. These innovative units fuse traditional electric heating with advanced heat pump technology, allowing for significant reductions in energy consumption compared to conventional electric water heaters.

One of the primary features of these hybrid models is their outstanding energy efficiency ratings. Both units typically achieve an impressive Energy Factor (EF) that reflects their ability to convert electricity into hot water. By utilizing ambient air to heat water, these heat pump water heaters pull in heat from the surrounding environment and transfer it to the water, thus consuming less electricity. This technology not only reduces energy bills but also decreases the overall carbon footprint of the home.

The HPE10280H045DV and HPE10260H045DV boast a sleek, compact design that allows for flexible installation options, making them suitable for various locations within a home. Their user-friendly digital interface provides homeowners with intuitive controls to manage temperature settings and monitor performance. These models are equipped with smart technology that includes an intuitive display for adjusting modes and settings. They feature selectable operating modes, including electric, heat pump, and hybrid, allowing users to choose the most efficient heating method based on current needs.

In terms of capacity, the HPE10280H045DV offers a substantial 80-gallon tank, while the HPE10260H045DV provides a 60-gallon capacity, ensuring that households of different sizes can enjoy ample hot water for showers, laundry, and dishwashing simultaneously. Both models are designed with durability in mind, featuring robust components and corrosion-resistant tanks that promise longevity and maintenance-free operations.

Another significant aspect of these hybrid water heaters is their whisper-quiet operation, which makes them ideal for installation in living spaces or areas close to bedrooms. The noise level is minimized by the efficient insulation and placement of the compressor, ensuring that the serenity of the home is maintained.

In summary, the American Water Heater HPE10280H045DV and HPE10260H045DV represent a leap forward in the water heating industry, combining innovative heat pump technology with user-friendly features, energy efficiency, and ample capacity, making them an excellent choice for environmentally conscious homeowners looking for reliable hot water solutions.