State Water Heater Water Heater Brochure

At State, we place the safety and

reliability of our products above all

else. By incorporating technologically

advanced safety features into every

model, we provide the assurance and

peace of mind that can only come from

an State quality product.

Air-Fuel Ratio (AFR) Sensor

State’s unique AFR sensor monitors

and maintains proper combustion at

all times. Together with the onboard

computer, this system will adjust the fan

motor speed to ensure that air and fuel

have a proper mixture ratio, minimizing

emissions and maximizing efﬁciency.

Additional Safety Features

Freeze Protection:

Every heater in State’s tankless lineup

has an internal freeze protection

system, which is rated to protect the

heaters when installed in sub-freezing

conditions. This system works to keep

water temperatures within the heat

exchanger from falling below a certain

level, preventing freeze damage.

SAFETY

HEAT EXCHANGER

IGNITER

AFR

FLAME SENSOR

BURNER

Hi-Limit Switch:

Ensures that water temperatures do not exceed safe levels. Before the water temperature can even reach these unsafe

levels, the hi-limit switch activates by disengaging the gas valves, effectively shutting down the water heater.

PVC Venting:

Indoor condensing models have a thermistor and hi-limit switch that monitor the exhaust temperature. If the exhaust

temperature nears an unsafe limit, these features regulate combustion and can shut the heater down to protect the

integrity of the PVC vent material.

Overheat Cutoff Fuse:

Ensures that there are no breaches in the heat exchanger drum. In cases where enough physical damage might have

been done to the water heater to lead to a breach in the heat exchanger drum, the overheat cutoff fuse reacts by

shutting down the water heater if

the surface of the heat exchanger retains too much heat.