Line Voltage Monitor

The control monitors the line voltage provided to the system. If the line voltage is too low, the system components may not operate properly. For diagnostic purposes, the display panel should indicate that the cause was power-related.

•If line power is below 102Vac, the water heater will enter the fault state and initiate a controlled shut-down. The fault will automatically clear if the voltage is restored to 102Vac or above.

•If line power is above 132Vac, the water heater will enter the fault state and initiate a controlled shut-down. The fault will automatically clear if the voltage is restored to 132Vac or below.

TEMPERATURE REGULATION

Temperature regulation is the process by which the controller determines when the water heater is to heat water as well as when to stop the heating process. This section defines how the water heater is to regulate the temperature.

Temperature Units of Measure

The water heater control will display the temperatures in either °C or °F (as per selected unit of measure). The main temperature unit is °C and all the calculations, within the control system, are done using temperature values in °C. The display has the capability to perform a conversion from °C to °F. The resulting temperatures in °F will be rounded off to the nearest degree.

Temperature Set-point

The adjustable temperature set-point is used to determine the desired outlet temperature of the water heater.

The water outlet of the heat engine feeds the outlet of the storage tank although some mixing does occur with the water at the top of the storage tank. For this reason, the temperature of water delivered is considered equivalent to the heat engine output temperature.

This value is to be set within the acceptable range of 90°F (32°C) and 158°F (70°C) when selecting the operating modes.

As a safety measure, the control is to ensure that the set- point cannot be adjusted outside of this range.

If the water flow is turned off and then is turned on, the controller remembers and automatically resets to the last temperature.

If a power outage occurs or the unit is energized/de- energized by the STANDBY symbol for re-booting, the controller resets to the last temperature setting.

After clearing a continuous lockout error code the unit will always go back to the factory default temp setting and mode.

Storage Tank Set-point

The control is required to maintain a storage tank set-point differential temperature.

Storage Tank Call For Heat

The storage tank call for heat is generated when the tank thermistor temperature drops below the storage tank set- point minus the fixed storage tank differential.

At the end of a call for heat the tank thermistor’s temperature is equal to or greater than the storage tank set-point.

Temperature Control Modes

The temperature control functions can operate under one of the pre-defined user-selected control modes. The temperature control mode serves to limit the range of the (heat engine) temperature set-point and the storage tank differential.

Please reference the Operating Mode Selection for details of how the set-point and differentials are adjusted for the different modes. In brief, three modes are provided: Vacation Mode, Energy Saver Mode, and Boost Mode.

The temperature control mode will be maintained after a power loss. Upon restoring power, the temperature set- point is set to the last temperature.

The default setting is 105°F (41°C) in the Energy Saver Mode.

Outlet Temperature Limit Control

Your water heater is designed to provide a constant outlet water temperature. The water heater takes into account dynamic conditions of the heat engine such as the inlet water temperature, flow rate, gas flow adjustment, etc and establishes the optimum performance.

The control will end the call for heat if the outlet thermistor temperature exceeds the set-point by a fixed amount. The call for heat may be restored if the outlet thermistor temperature drops below the set-point by 5.4°F (3°C) or more.

Inlet Temperature Limit Control

To add protection to the system, an over-temperature comparison is made on the inlet water temperature. The water heater will end the call for heat if the inlet thermistor temperature is above the set-point.

The call for heat may be restored if the inlet thermistor temperature drops below the set-point.

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State Industries GPH-90N, 0710 316888-002 warranty Temperature Regulation
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0710 316888-002, GPH-90N specifications

The State Industries GPH-90N,0710 316888-002 is a high-quality water heater designed to meet the demands of both residential and commercial applications. Renowned for its durability and efficiency, this model serves as an essential component for facilities requiring reliable hot water supply.

One of the standout features of the GPH-90N is its impressive heating capacity, which allows it to deliver hot water quickly and effectively. This model boasts a heating input of 90,000 BTU per hour, making it suitable for large households or commercial establishments. The unit is designed to maintain consistent water temperatures, ensuring that users have access to hot water whenever needed.

The GPH-90N is also equipped with advanced technologies that enhance its operational efficiency. It features a modulating gas burner that adjusts its output to match the flow rate of hot water demanded, thereby optimizing energy use and minimizing operating costs. This technology not only improves performance but also extends the lifespan of the water heater.

Durability is a key characteristic of the State Industries GPH-90N. The unit is crafted from high-quality materials, including a robust stainless steel tank that resists corrosion and ensures long-lasting performance. This corrosion-resistant design is particularly beneficial in areas with hard water, where mineral deposits can be a significant concern. Additionally, the tank is insulated with high-density foam, which helps to maintain heat and reduce standby heat loss.

A crucial aspect of the GPH-90N is its user-friendly features. The control panel is straightforward, allowing users to adjust settings with ease. The water heater is also designed for simple maintenance, ensuring that annual servicing can be carried out with minimal disruption.

Safety is paramount in the design of the GPH-90N. It includes multiple safety features, such as a pressure relief valve and a safety shut-off mechanism, which provide peace of mind for users. This ensures that the unit operates safely under varying conditions.

In conclusion, the State Industries GPH-90N,0710 316888-002 is a powerful and efficient water heater that combines advanced technology with durable construction. Its high heating capacity and user-friendly design make it a reliable choice for both residential and commercial applications, ensuring that hot water is always available when needed.
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