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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%
*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.
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
SYSTEM DIAGRAM
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.
Essential Load
Switch
Whole-House
Switch
All-in-One
New-House
Switch*
Automatic transfer switch—The critical component of home standby power
Main power
distribution panel
Automatic transfer
switch
Generator power
emergency disconnect