Maytag HRN31275P manual Operating Instructions, Before The Water Heater Will Operate, Operation

OPERATING INSTRUCTIONS

This water heater is equipped with an electronically operated venting system and electronic control. For the burner to come on, the water heater thermostat must call for heat. Then the system will begin sequencing, each section proving itself before gas is allowed to flow to the burner.

BEFORE THE WATER HEATER WILL OPERATE:

1.The control system must be connected to a grounded 110/ 120 volt power supply. The control system has an overall rating of 2 amps. The water heater must be securely and adequately grounded in accordance with local codes and with the current edition of the National Electrical Code ANSI/ NFPA 70.

2.The ON/OFF rocker switch, located on the control box above the thermostat must be in the “ON” position for the electrical control system to operate allowing the gas portion to operate (ignite burner).

3.The venting manual reset switch must be in the closed position. See “Venting Manual Reset Switch” in the “Troubleshooting” section.

4.There is a non-resettable hi-limit switch in the thermostat, which must be good (closed) for the thermostat to be operated. See “High Temperature Limit Switch” in the “Troubleshooting” section.

OPERATION

When the thermostat calls for heat, gas is allowed to flow to a (N/O) pressure switch closing it. An electrical circuit is then made to the blower, turning it on. When the blower has achieved sufficient venting, the air pressure switch will close. A 120 volt circuit will be completed through the venting manual reset switch and on the 120 volt gas valve. The 120 volt gas valve will open allowing gas to flow to the burner. The hot surface ignitor will establish a main burner flame.

OR

FIGURE51.

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