Rheem GEN15ADC-E Automatic Operation Sequence, Setting Exercise Timer, Engine Cool-down Timer

Models: GEN15ADC-E GEN16AD-E GEN20AD-E Rheem / Ruud standby generator

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Operation

Automatic Operation Sequence

The generator’s control board constantly monitors utility voltage. Should utility voltage drop below a preset level, the control board will signal the engine to crank and start.

When utility voltage is restored above a preset voltage level, the engine is signaled to shut down.

The actual system operation is not adjustable and is sequenced by sensors and timers on the control board, as follows:

Utility Voltage Dropout Sensor

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t *GVUJMJUZTPVSDFWPMUBHFESPQTCFMPXBCPVUQFSDFOU of the nominal supply voltage, the sensor energizes a 3 second timer. The timer is used to ‘sense’ brown-outs.

t 0ODFUIFUJNFSIBTFYQJSFEUIFFOHJOFXJMMDSBOL and start.

Utility Voltage Pickup Sensor

This sensor monitors utility power voltage. When utility voltage is restored above 80 percent of the nominal source voltage, a time delay starts timing and the engine will go to engine cool-down.

Engine Cool-down Timer

When utility power is sensed and the load transfers to the utility source, the engine will go into a cool down period as described below:

 t *GUIFHFOFSBUPSIBTSVOGPS.03&UIBONJOVUFTPODF the utility transfer occurs, the engine will continue to run for about 1 minute before shutting down.

 t *GUIFHFOFSBUPSIBTSVOGPS-&44UIBONJOVUFTPODF the utility transfer occurs, the engine will continue to run until 5 minutes has elapsed before shutting down.

Setting Exercise Timer

The generator is equipped with an exercise timer. During the exercise period, the unit runs for approximately 20 minutes and then shuts down. Electrical load transfer DOES NOT occur during the exercise cycle (unless an utility power outage occurs).

The generator will only enter the exercise cycle if the unit is in the AUTO mode and this exact procedure is followed.

To set the exercise timer:

NOTICE The generator is set with a default exercise cycle setting of Tuesday at 2:00 P.M, Central Time. To change the cycle setting, proceed to the following steps:

1.Choose the day and time you want your generator to exercise.

2.Press and hold the left arrow and right arrow simultaneously for 3 seconds to enter the General Set- Up program mode. See General Set-Up flow chart in Menu Section.

3.Verify and/or set the time and date on the unit.

 (PUPUIF4&5&9&3$*4&QSPNQUBOEIJUUIFi0,w button.

NOTICE Items will flash until they are selected.

SELECT DAY: Use the left or right arrow to toggle through the days of the week, Once the day is selected, IJUUIFi0,wCVUUPO

SELECT HOUR: Use the left or right arrow to toggle through between 1 and 12. Choose the hour of day you XBOUUIFHFOFSBUPSUPFYFSDJTFUIFOIJUUIFi0,wCVUUPO

SELECT MINUTE: Use the left of right arrow to toggle between :00 and :59. Choose the minute of the day you XBOUUIFHFOFSBUPSUPFYFSDJTFUIFOIJUUIFi0,wCVUUPO

SELECT AM/PM: Use the left of right arrow to toggle CFUXFFO".BOE1.0ODFDIPTFOIJUUIFi0,wCVUUPO

NOTICE During the weekly exercise cycle, the generator will run for 20 minutes, but it will not supply power to the home. During the exercise cycle, the in-home monitor will continue blinking the GENERATOR READY green LED.

If you want to change the day and time the unit exercises, simply perform the procedure again.

To turn off the generator exercise cycle, go to the OFF selection within the day of the week menu and press OK. The display will then scroll: EXERCISE CYCLE OFF.

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Rheem GEN15ADC-E, GEN20AD-E Automatic Operation Sequence, Setting Exercise Timer, Utility Voltage Dropout Sensor