System Diagram

Main power distribution panel

Automatic transfer switch

Generator power emergency disconnect

Automatic transfer switch—The critical component of home standby power

 

 

All-in-One

Essential Load

Whole-House

New-House

Switch

Switch

Switch*

The automatic transfer switch is the key component of your backup power system. When an outage occurs, it automatically transfers power from the utility to your generator. When utility power is restored, the transfer switch signals the generator to shut down, and puts your home back on the utility power.

Lennox’ generator systems include commercial-grade automatic transfer switches in a variety of amperage sizes and configurations to match your home’s power needs.

Lennox™ Residential Generator Specifications

Model

RGEN12

RGEN17

RGEN30

Rated power LP/NG (kW)

12/10.4

17/16

30/27

Dimensions LxWxD (in.)

42-1/2 x 30-1/2 x 32-1/2

47-1/4 x 28-5/8 x 31-3/5

77 x 33-1/2 x 45

 

LxWxD (mm)

1079 x 774 x 826

1199 x 713 x 803

1850 x 861 x 935

Starting watts LP/NG (kVA)

32

38

42

Total harmonic distortion at rated load

4.25%

3.00%

2.40%

How does it work? A Lennox™ Residential Generator has three modes of operation:

1.Standby Mode – Monitors utility power for outages

2.Self-Test Mode – Runs weekly 20-minute test cycles, ensuring the unit is tuned up and operating effectively

3.Emergency Power Mode

–Automatic transfer switch senses outage

–Generator starts

–Transfer switch engages generator power

–Transfer switch monitors for restora- tion of utility power

–Transfer switch reengages utility power

–Generator runs cool-down cycle and then shuts down

*New-house switch not available in Canada

 

Note: Due to Lennox’ ongoing commitment to quality, all specifications, ratings and dimensions are subject to change without notice.