Thermal Switch Models | State Industries GPX, GSX, GS6 manual

TESTING THE THERMOCOUPLE AND GAS CONTROL VALVE/THERMOSTAT

IMPORTANT: Before performing any test, check the area around the water heater for any source of a Flammable Vapor (i.e gasoline, paint thinners, etc.) If any sources are found do not proceed until they are removed.

Thermocouple Output Test

The following test will check the DC voltage generated by the thermocouple when the pilot light is lit.

1.Disconnect the thermocouple from the gas control valve/thermostat as shown in the adjacent figure.

2.Using a multimeter with alligator clips leads, attach the red lead to the body (copper part) of the thermocouple. Attach the black lead to the end (silver part) of the thermocouple. Reference the adjacent image for placement of the leads.

3.Follow the lighting instructions on the front of the water heater to light the pilot and watch the voltage readings on the multimeter. NOTE: You will have to hold the button down to keep the pilot lit for the duration of the test. After 45 seconds the meter

should read 20-30 millivolts DC or more.	Figure 20

IF . . .		. . . THEN
the multimeter voltage reads	•	check the positioning of the thermocouple tip to the pilot flame. If
at least 20-30 millivolts DC		necessary position the thermocouple to ensure the flame contacts the
		thermocouple’s tip. Re-test the thermocouple, and if it fails replace the
		thermocouple. (See p. 22)

the multimeter voltage reads	•	the thermocouple is working properly. Proceed to the gas control valve/
more than 20-30 millivolts DC		thermostat test.

Gas Control Valve/Thermostat Test

(Thermal Switch Models)

The following test will check the gas control valve/ thermostat’s ECO & TCO (Energy Cut Off & Thermal Cut Off). NOTE: This test applies to gas valves with wire leads that attach to the thermal switch on the manifold door.

1.Remove both wire leads from the TCO (thermal cut off switch) and jumper the two leads to complete the circuit. Once the test is complete, remove the jumper and reconnect the wire leads.

2.Follow the lighting instructions on the front of the water heater to light the pilot.

3.Release the knob and check to see if the pilot remains lit.

GAS CONTROL
KNOB
TCO	TCO
WIRE LEADS	WIRE LEADS
	(JUMPERED)
	TCO
	SWITCH

Figure 21

IF . . .		. . . THEN
the pilot lights and remains lit	•	the TCO (thermal switch sensor) has tripped OR the TCO is not
		working (OPEN). Reattach the wire leads and press the TCO reset
		button. Relight the water heater. If the pilot will not remain lit, replace
		the TCO. If the pilot does remain lit, the TCO was tripped-possibly
		due to a lack of combustion air (see pp 13-16 & 18-19) OR because
		of a Flammable Vapor event. Check around the water heater for any
		source of ﬂammable vapors (i.e. gasoline, paint thinner, etc.).

the pilot will not light or remain	•	replace the gas control valve/thermostat.
lit with the wire leads jumpered		(See p. 24)

GPX, GS6, GSX specifications

State Industries offers a range of high-quality residential and commercial water heaters that cater to diverse customer needs. Among their prominent models are the GSX, GS6, and GPX, each equipped with unique features, advanced technologies, and distinct characteristics that enhance their performance and efficiency.

The GSX series is well-known for its energy efficiency and reliability. It utilizes a high-efficiency gas burner to provide fast recovery rates, making it suitable for households with high hot water demand. The GSX water heaters are designed with a Foam Insulation System that minimizes heat loss and maximizes energy conservation. Additionally, their innovative design includes a durable glass-lined tank to prevent corrosion, ensuring long-term performance and extended lifespan.

Moving on to the GS6 model, this water heater is characterized by its user-friendly control features, including an adjustable thermostat that allows for precise temperature settings. The GS6 is built with a robust gas control valve that enhances efficiency and helps maintain consistent water temperature. The model is also designed with an anode rod that minimizes corrosion, prolonging the life of the tank. Its standing pilot light system provides reliable ignition, while its compact design makes it suitable for various installation locations, even in tight spaces.

The GPX series stands out in the market with its advanced technological features and sleek design. It integrates smart technologies designed to monitor and optimize performance. The built-in diagnostics programmable control allows users to track system performance and troubleshoot any potential issues easily. The GPX models also come equipped with a high-efficiency condensing gas burner that maximizes energy use, contributing to reduced utility bills. Furthermore, their stainless steel construction adds to their durability and resistance against rust and corrosion.

In summary, State Industries' GSX, GS6, and GPX models represent innovation in the water heating industry. They incorporate energy-efficient technologies, durable materials, and user-friendly controls, making them reliable choices for both residential and commercial applications. With custom features tailored to meet varied needs, these water heaters uphold State Industries' commitment to quality and customer satisfaction, ensuring that users enjoy consistent hot water while being conscious of energy consumption.