Operational Conditions

Operating the Temperature Control System

Figure 19B: Status Codes

List of status codes are shown

at top of gas control valve/thermostat.

VAC

Water Temperature Adjustment

The water temperature setting can be adjusted from 55°F to 155°F. Turn the Gas Control/Temperature Knob to the desired setting/temperature.

NOTE: The temperatures indicated are approximates. The actual temperature of the heated water may vary. Also, some models are certified for 180°F outlet temperatures. See the Data Plate on the front of the water heater for the maximum outlet temperature.

Operating Modes and Settings

•Standard Mode - The controller adjusts the water heater to maintain the temperature set by the user.

•Vacation Setting - The Vacation Setting (VAC) sets the controller at approximately 55°F. This setting is recommended when the water heater is not in use for a long period of time. This effectively turns the controller temperature setting down to a temperature that prevents the water in the water heater from freezing while still conserving energy.

Status Light Codes

Normal Flashes:

• 0 Flashes Indicates Control Off/Pilot Out.

•1 Flash Indicates Normal Operation.

•Continuous Light indicates the gas control valve/thermostat is shutting down.

Diagnostic Flashes: If the water heater is not working, look for the following diagnostic flashes after lighting the pilot.

2 Flashes	Indicates thermopile voltage is low.
4 Flashes	Indicates overheat failure.
5 Flashes	Indicates water temperature sensor failure.
7 Flashes	Indicates electronic control failure.
8 Flashes	See “Status Light Code Troubleshooting Chart.”
9 Flashes	Indicates chamber temperature sensor circuit
	is open or shorted.

10 Flashes Indicates an LDO occurrence was detected in the combustion chamber (contaminants).

Condensation

Moisture from the products of combustion condenses on the tank surface and the outside jacket of the water heater and forms drops of water which may fall onto the burner or other hot surfaces. This will produce a “sizzling” or “frying” noise. NOTE: This condensation is normal and should not be confused with a leaking tank. Condensation may increase or decrease at different times of the year.

High efficient energy saver water heaters will produce larger amounts of condensation on initial start-up or when a large amount of hot water is being used. NOTE: Do not confuse this with a “tank leak”. Once the water reaches a temperature of 120°F and the tank warms up (usually 1-2 hours), the condensation will stop.

IMPORTANT: It is always recommended that a suitable metal drain pan be installed under the water heater

to protect the area from water damage resulting from normal condensation production, a leaking tank or piping connections. Refer to “Location Requirements” on page

4.Under no circumstances is the manufacturer to be held responsible for any water damage in connection with this water heater.

Water Heater Sounds

During the normal operation of the water heater, sounds or noises may be heard. These noises are common and may result from the following:

1.Normal expansion and contraction of metal parts during periods of heat-up and cool-down.

2.Condensation causes sizzling and popping within the burner area and should be considered normal.

3.Sediment buildup in the tank bottom will create varying amounts of noise and may cause premature tank fail- ure. Drain and flush the tank as directed under “Drain- ing and Flushing”.

Smoke/Odor

The water heater may give off a small amount of smoke and odor during the initial start-up of the unit. This is due to the burning off of oil from metal parts of a new unit and will disappear after a few minutes of operation.

Safety Shut-off

This water heater is designed to automatically shut-off in the event of the following:

1.The pilot flame is extinguished for any reason.

2.The water temperature exceeds 189°F (87°C).

3.Excessive contaminants in the combustion chamber.

4.The ignition of flammable vapors.

A thermopile is used to determine if a pilot flame is present and will shut off the gas supply to the main burner and pilot if the flame is absent. This unit is also equipped with a combustion chamber temperature sensor that will shut off

318935-003 specifications

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