Guardian 15 & 20 kW

  • Quiet, powerful, liquid-cooled engine fueled by natural gas or LP gas.
  • A standard weather protective enclosure protects generator from harmful weather and also reduces exterior noise levels. Includes key locks for security.
  • Built-in charger maintains battery at optimum performance level.
  • Automatic safety shutdowns protect engine and generator in event of low oil pressure, high temperature, overspeed and/or overcrank.
  • Automatic seven-day exerciser runs the system for fifteen minutes each week to maintain top running condition.
  • Standard 100-amp remote-mounted automatic transfer switch for fast and efficient unattended transfer to generator when utility source fails

Generator Set
Model 04721 04723
Rated Power (kW)* 15 20
60 Hz Phase Single Single
Voltage 120/240V 120/240V
Amps @ 120/240V, Single Phase 60 Hz 125/62.5 166.6/83.3
Engine / Alternator RPM 1800 3600
Engine 1.5L OHC 4 cyl. 1.5L OHC 4 cyl.
Fuel Natural gas or LP gas Natural gas or LP gas
UL 2200 Listed Yes Yes
CSA Listed Yes Yes
Main Line Circuit Breaker 70 Amp 90 Amp
Engine Cooling Liquid Liquid
Dimensions (L" x W" x H") 68 x 30 x 40 68 x 30 x 40
Unit Wt. (lbs.)** 980 985
* Natural gas and LP gas rating may decrease depending on btu content of local gas supply. Proper sizing of tank/piping is required to ensure full output.

** Includes Transfer Switch

Start/Stop Control Cyclic cranking: 7 seconds on, 7 seconds rest. 90 seconds overcrank protection.
Automatic Low Oil Shutdown Standard
Overspeed Shutdown Standard, 70 Hz
Overcrank Protection Standard
Automatic Voltage Regulator with Over-Voltage Protection Standard
Engine Warmup 15 seconds
Engine Cool-Down 1 minute
Safety Fuse Standard
Safety Fuse Standard
Starter Lockout Starter cannot re-engage until 5 seconds after engine has stopped
2 Amp Timed Trickle Battery Charger Standard
Auto Switch Utility failure/7 day exercise
Off Switch Stops unit. Power is removed. Control and charger still operate
Manual / Test Start with starter control, unit stays on. If utility fails, transfer to load takes place
Go to 15 & 20 KW specifications PDF

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