Startup / System Settings

The AC power cord should be plugged in to an appropriate 115V outlet. The controller will enter an initialization phase in which the operating control lamp will flash red and green. After the initialization period the controller will be in automatic operation with the default settings active.

The pre-adjusted system scheme is ARR 1. Other system settings are available, but this setting should not be changed for the system included in this package.

The controller is now ready for operation. The following system settings should be made as indicated. The operational system channels are listed in order of appearance by pressing the forward (1) button.

COL:

Collector Temperature Display range: -40 to +482 °F

TST:

Tank temperature

Display range: -40 to +482 °F

S3, S4:

Additional sensor temperature Display range -40 to +482 °F

TRF:

Temperature return ﬂow Display range -40 to +482 °F

hP:

Operating hours counter Display channel

Shows the current collector temperature.

Shows the current tank temperature (from tank bottom sensor).

Shows the current temperature of the corresponding optional sensor (without control function).

S3 and S4 are only indicated if the temperature sensors are connected.

Shows the current temperature of the optional temperature return ﬂow sensor (S4) when the heat quantity measurement option is activated.

The operating hours counter adds up the solar operating hours of the pump. Full hours are shown on the display.

The total operating hours can be reset. When the operating

hours channel is selected the symbol is permanently shown in the display. The set button (3) must be pressed for approximately 2 seconds in order to go into the reset mode

for the counter. The display symbol will be ﬂashing and the operating hours will be set to 0. In order to ﬁnish the reset procedure the set button (3) must be pressed in order to conﬁrm.

In order to interrupt the reset procedure no button should be pressed for about 5 seconds. The controller will automatically return to the indication mode with the previous total.

Once the ﬁnal display channel is reached the remaining system setting channels may only be accessed by holding the forward

(2) button down for approximately 2 seconds. The following setting channels will then be shown:

ARR:

System arrangement setting

DTO:

Switch-on temperature diff. Adjustment range

2.0to 40.0 °F Default setting 12.0

Recommended setting: 10.0

Shows the current system conﬁguration setting. Arrangement 1 should be used for the system in this package and this setting should not be changed.

Primarily the controller works in the same way as a standard differential controller. If the switch-on difference, DT O (collector temperature sensor reading minus the tank sensor reading), is reached the pump is activated.

318281-000 specifications

The American Water Heater 318281-000 is a highly regarded product in the realm of residential water heating, providing a perfect blend of efficiency, reliability, and advanced technology. Designed to deliver hot water conveniently and effectively, this model is suitable for various home sizes and needs.

One of the standout features of the 318281-000 is its energy efficiency. This water heater is built to comply with stringent energy regulations, helping households reduce their utility costs without compromising on performance. It typically features a high Energy Factor (EF) rating, indicating more efficient energy use for heating water. This technology not only helps in saving on energy bills but also contributes to environmental sustainability by reducing the carbon footprint of the home.

The 318281-000 employs advanced insulation techniques that minimize heat loss, ensuring that hot water is readily available whenever needed. Its design often includes a high-quality tank with foam insulation, providing better retention of heat and, consequently, more hot water availability.

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The installation of the American Water Heater 318281-000 is designed to be user-friendly, with flexible venting options and straightforward plumbing requirements. Many models come ready for either natural gas or propane configurations, providing homeowners with choices that suit their specific needs.

Another appealing aspect of this water heater is the availability of modern safety features. It generally includes a pressure relief valve and a temperature dial, making it easier for users to manage and maintain safe operation levels.

In conclusion, the American Water Heater 318281-000 stands out in the crowded water heating market by marrying high efficiency, advanced technology, and user-centered design. Its ability to provide a consistent hot water supply while being environmentally friendly makes it an attractive option for homes looking to upgrade or replace their existing water heating systems. With its blend of durability and smart features, this model is indeed a wise investment for those seeking longevity and efficiency in their home hot water solutions.