Manuals+

Generac RG Protector Series Standby Generators

Liquid-Cooled Gaseous Engine Spec Sheet

Standard Features

  • Evolution™ Controller ⚙️
  • Padlockable Control Panel Cover ?
  • Cellular Connectivity for Mobile Link® and Fleet ?
  • Corrosion Resistant Aluminum Enclosure ?️
  • 5 Year/2,000 Hour Limited Warranty ✔️
  • ±1% Digital Voltage Regulation ⚡
  • <5% Total Harmonic Distortion Power Quality ✨
  • Fuel Efficiency ⛽
  • Propane or Natural Gas ♨️
  • EPA Emissions Certified ✅
  • CA & MA Emissions Compliant ✅
  • 22 & 27 kW Models Available
  • UL 2200 Listed
  • SwRI® listed (NFPA 37)
  • 22, 27, 32, & 38 kW models for installation as close as 18 in (457 mm) from structure

Optional Field-Installable Features

  • Push-Button Emergency Stop ▶️
  • Cold Weather Operation Heaters ❄️

Innovative Design & Testing

Generac's success is built on innovative design and prototype testing, complemented by total commitment to component, reliability, environmental, destruction, and life testing to applicable CSA, NEMA, EGSA, and other standards. This ensures Generac Power Systems provide superior performance.

Mobile Link™ Connectivity

Standard on Generac Liquid-Cooled RG Protector Series home standby generators, Mobile Link Cellular allows users to monitor generator status from anywhere via smartphone, tablet, or PC. It provides real-time operating status, maintenance alerts, and generator readiness. Users can connect their account to an authorized generator servicer for proactive support. With Mobile Link, users can confirm their generator is ready before a power outage.

True Power™ Electrical Technology

This technology utilizes superior harmonics and sine wave form, producing less than 5% Total Harmonic Distortion for utility-quality power. This enables confident operation of sensitive electronic equipment and micro-chip based appliances, such as variable speed HVAC systems.

Standby Power Ratings

  • Model RG02224 - 22 kW, 60 Hz Emergency Standby Power Generator
  • Model RG02724 - 27 kW, 60 Hz Emergency Standby Power Generator
  • Model RG03224 - 32 kW, 60 Hz Emergency Standby Power Generator
  • Model RG03824 - 38 kW, 60 Hz Emergency Standby Power Generator
  • Model RG04524 - 45 kW, 60 Hz Emergency Standby Power Generator
  • Model RG06024 - 60 kW, 60 Hz Emergency Standby Power Generator

All models are EPA Emissions Certified and CA & MA Emissions Compliant. The image of RG02224 is shown as representative.

Emergency Standby Power (ESP) Rating: Standby ratings apply to installations served by a reliable utility source. The ESP rating is applicable to varying loads for the duration of a power outage. The average power output over 24 hours shall not exceed 70% of the ESP rating.

Voltage Regulation

All Generac models feature solid-state, frequency-compensated voltage regulation. This system provides optimized FAST RESPONSE to changing load conditions and MAXIMUM MOTOR STARTING CAPABILITY by electronically torquematching surge loads to the engine. Digital voltage regulation is maintained at ±1%.

Single Source Service Response

Generac's extensive dealer network provides parts and service know-how for the entire unit, from the engine to the smallest electronic component.

Generac Transfer Switches

Generac Power Systems are offered with their own transfer systems and controls for total system compatibility, ensuring long life and reliability.

Generator Output

Propane

VoltageRG02224 (kW / A)RG02724 (kW / A)RG03224 (kW / A)RG03824 (kW / A)RG04524 (kW / A)RG06024 (kW / A)
120/240 V 1-Phase22 / 9227 / 11332 / 13338 / 15845 / 18860 / 250
208/120 V 3-Phase22 / 7627 / 9432 / 11138 / 13245 / 15660 / 208
240/120 V 3-Phase22 / 6627 / 8132 / 9638 / 11445 / 13560 / 180
480/277 V 3-Phase-- / ---- / --32 / 4838 / 5745 / 6860 / 90

Natural Gas

VoltageRG02224 (kW / A)RG02724 (kW / A)RG03224 (kW / A)RG03824 (kW / A)RG04524 (kW / A)RG06024 (kW / A)
120/240 V 1-Phase22 / 9225 / 10432 / 13338 / 15845 / 18860 / 250
208/120 V 3-Phase22 / 7625 / 8732 / 11138 / 13245 / 15660 / 208
240/120 V 3-Phase22 / 6625 / 7532 / 9638 / 11445 / 13560 / 180
480/277 V 3-Phase-- / ---- / --32 / 4838 / 5745 / 6860 / 90

Alternator System

SpecificationRG02224RG02724RG03224RG03824RG04524RG06024
Circuit Breaker (CB) Size (A) 120/240 V 1Phase100125150175200300
Circuit Breaker (CB) Size (A) 208/120 V 3Phase80100125150175250
Circuit Breaker (CB) Size (A) 240/120 V 3Phase8090100125150200
Circuit Breaker (CB) Size (A) 480/277 V 3Phase----606080100
Alternator TypeSynchronous
Rotor Insulation ClassH
Stator Insulation ClassH
Telephone Interference Factor (TIF)50
BearingsSealed Ball
CouplingFlexible Disc
Excitation SystemDirect
Total Harmonic Distortion<5%

Surge Capacity

RG02224RG02724RG03224RG03824RG04524RG06024
15% Voltage Dip (A)30% Voltage Dip (A)15% Voltage Dip (A)30% Voltage Dip (A)15% Voltage Dip (A)30% Voltage Dip (A)15% Voltage Dip (A)30% Voltage Dip (A)15% Voltage Dip (A)30% Voltage Dip (A)15% Voltage Dip (A)30% Voltage Dip (A)
120/240 V 1-Phase55135621707518075180105240140320
208/120 V 3-Phase40927012087210872104413070210
240/120 V 3-Phase35806110375182751823811561182
480/277 V 3-Phase--------3687368720603091

Engine System

SpecificationRG02224RG02724RG03224RG03824RG04524RG06024
MakeGenerac
Model2.4 L Inline Four-Cylinder, Naturally Aspirated2.4 L Inline 4Cylinder, Turbocharged2.4 L Inline 4Cylinder, Turbocharged & Aftercooled2.4 L Inline 4Cylinder, Naturally Aspirated2.4 L Inline 4Cylinder, Turbocharged & Aftercooled2.4 L Inline 4Cylinder, Turbocharged & Aftercooled
Compression Ratio9.5:1
Lifter TypeHydraulic
Oil Pump TypeGear
Oil Filter TypeFull Flow Spin-on Cartridge
Crankcase Capacity (qt (L))4 (3.8)
Temperature Derate1.7% per 10 °F above 77 °F (1.5% per 5 °C above 25 °C)
Altitude Derate3% per 1,000 ft above 600 ft (1% per 100 m above 183 m)3% per 1,000 ft. above 600 ft. (1% per 100 m above 183 m)3% per 1,000 ft. above 3,000 ft. (1% per 100 m above 915 m)3% per 1,000 ft. above 600 ft. (1% per 100 m above 183 m)3% per 1,000 ft. above 3,000 ft. (1% per 100 m above 915 m)
Exercise Speed (rpm)1,5001,8001,8001,8001,8001,800
Operating Speed (rpm)3,600
Exhaust Flow at Rated Output (cfm (m³/min))165 (4.7)180 (5.1)300 (8.5)420 (11.9)494 (14)

Governor

TypeFrequency Regulation
Electronic Isochronous

Cooling System

CoolantCoolant System Capacity (US gal (L))Water Pump TypeFan TypeFan QuantityMaximum Ambient Air Temperature (°F (°C))
50/50 (50% Ethylene Glycol)2.5 (9.5)Belt DrivenBelt Driven1122 (50)

Fuel System

  • Usable Fuels: Liquid Propane (LP) Vapor or Natural Gas (NG)
  • Fuel Type Configuration: Fuel System & Controller Selection; RG06024 Fuel Type is Model-Specific and Not Changeable
  • LP Vapor Pressure: 5-14 in H₂O (1.24-3.48 kPa)
  • NG Pressure: 5-14 in H₂O (1.24-3.48 kPa)
  • Fuel Shutoff Solenoid: Standard

Fuel Consumption

Liquid Propane

Rated LoadRG02224 (US gph / L/h)RG02724 (US gph / L/h)RG03224 (US gph / L/h)RG03824 (US gph / L/h)RG04524 (US gph / L/h)RG06024 (US gph / L/h)
No Load @ Exercise Speed0.5 / 1.70.5 / 1.70.8 / 3.20.9 / 3.20.7 / 2.61.3 / 5.1
25%1.1 / 4.21.2 / 4.51.7 / 6.31.7 / 6.62.3 / 8.62.7 / 10.5
50%2.1 / 7.82.1 / 8.12.7 / 10.32.9 / 10.84.2 / 15.75.0 / 19.0
75%2.8 / 10.53.1 / 11.13.7 / 13.94.0 / 15.05.9 / 22.47.0 / 26.5
100%3.4 / 13.03.9 / 11.84.6 / 17.55.2 / 19.08.0 / 30.19.0 / 33.9

Propane Properties: 91,452 BTU/US gal (25.5 MJ/L); 36 ft³/US gal (0.27 m³/L); 2,516 BTU/ft³ (93.7 MJ/m³); 4.24 lb/US gal (0.508 kg/L)

Natural Gas

Rated LoadRG02224 (CFH / m³/h)RG02724 (CFH / m³/h)RG03224 (CFH / m³/h)RG03824 (CFH / m³/h)RG04524 (CFH / m³/h)RG06024 (CFH / m³/h)
No Load @ Exercise Speed42 / 1.242 / 1.279 / 2.283 / 2.365 / 1.8123 / 3.5
25%100 / 2.8108 / 3.1144 / 4.1162 / 4.6210 / 6.0267 / 7.6
50%190 / 5.4197 / 5.6226 / 6.4255 / 7.2380 / 10.8483 / 13.7
75%255 / 7.2287 / 8.2298 / 8.4345 / 9.8545 / 15.5672 / 19.1
100%316 / 9.0359 / 10.2375 / 10.6437 / 12.4730 / 20.7862 / 24.5

Natural Gas Properties: 1,036 BTU/ft³ (37.3 MJ/m³). See Emissions Data Sheets for maximum fuel flow for EPA and SCAQMD permitting purposes.

Electrical System

  • System Voltage: 12 V
  • Charge Alternator: 30 A
  • Battery Charger: 2.5 A
  • Recommended Battery (not included): Flooded Lead Acid, Group 26, 525 CCA Minimum

Enclosure

Sound Level at Exercise Speed (dB(A) @ 23 ft (7 m))Sound Level at Operating Speed & No Load (dB(A) @ 23 ft (7 m))Color
RG02224: 61RG02224: 70Bisque
RG02724: 61RG02724: 70
RG03224: 58RG03224: 64
RG03824: 58RG03824: 64
RG04524: 61RG04524: 73
RG06024: 65RG06024: 73

Evolution Controller Features

  • Two-Line Plain Text LCD
  • Languages: English, French, Spanish, and Portuguese
  • Mode Switch: AUTO, OFF, MANUAL
  • Programmable start delay (10-30 seconds)
  • Engine Start Sequence
  • Engine Warm-up (5 sec)
  • Engine Cool-down (1 min)
  • Starter Lock-out (cannot re-engage until 5 sec after engine stop)
  • Smart Battery Charger
  • Automatic Voltage Regulation with Over and Under Voltage Protection
  • Automatic Low Oil Pressure Shutdown
  • Overspeed Shutdown
  • High Temperature Shutdown
  • Overcrank Protection
  • Safety Fused
  • Failure to Transfer Protection
  • Low Battery Protection
  • 50 Event Run Log
  • Future Set Capable Exerciser
  • Incorrect Wiring Protection
  • Internal Fault Protection
  • Common External Fault Capability
  • Governor Failure Protection

Available Accessories

ProductPart NumberDescription
Generac Generator Connectivity Accessory, Cellular (GGCAC)G0072150Provides a reliable cellular connection for monitoring via Mobile Link and Fleet. Can upgrade Wi-Fi to cellular. Standard on new RG02224-RG06024 models.
Enclosure Mounted Emergency Stop KitG0065100Emergency Stop push button switch that mounts to the exterior of the generator enclosure.
Generac Load Manager, 50 AG0070001Helps optimize generator performance by managing large electrical loads upon startup and shedding them when overloaded.
Generac Load Manager, 100 AG0070061Helps optimize generator performance by managing large electrical loads upon startup and shedding them when overloaded.
Generac LTE Propane Tank Fuel Level MonitorG0070090Connects to 4G LTE cellular service to measure and report LP fuel levels, providing app alerts for fuel status and usage.
Battery Heater KitG0056301Recommended for operating environments below 32 °F (0 °C). Externally powered by 120 VAC, 60 Hz. Applies to RG02224, RG02724, RG03224, RG03824, RG04524, and RG06024.
Engine Block Heater KitG0056160Recommended for operating environments below 0 °F (-18 °C). Externally powered by 120 VAC, 60 Hz. Applies to RG02224, RG02724, RG03224, RG03824, RG04524, and RG06024.
Base Plug KitG0056510Base plugs to fit in the lifting holes of the baseframe to prevent debris intrusion.
2.4 L NA Gaseous Engine Regular Maintenance KitG0056560Includes oil filter, oil funnel, air filter, and spark plugs. Applies to RG02224 and RG02724.
2.4 L Turbo/TAC Gaseous Engine Regular Maintenance KitG0059840Includes oil filter, oil funnel, air filter, and spark plugs. Applies to RG03224 and RG03824.
2.4 L NA High Speed Gaseous Engine Regular Maintenance KitG0061720Includes oil filter, oil funnel, air filter, and spark plugs. Applies to RG04524.
2.4 L TAC High Speed Gaseous Engine Regular Maintenance KitG0061710Includes oil filter, oil funnel, air filter, and spark plugs. Applies to RG06024.
Bisque Paint KitG0057030Paint kit to correctly maintain or touch-up a generator enclosure if scratched or damaged, protecting from corrosion.

Installation Drawings - General Description

The document includes installation drawings detailing dimensions, service access, and connection points for various RG Protector Series models. These drawings provide critical information for proper unit placement and setup.

Installation Drawing: 22 & 27 KW Models (Drawing #0K8624-F)

This drawing provides views from the top, left side, right side, and rear. Key dimensions are: Overall Length 1580 mm [62.2 in], Overall Width 776 mm [30.6 in], Overall Height 983 mm [38.7 in]. Service items are located as follows: Oil Fill Cap (Either Side), Oil Dip Stick (Right Side), Oil Filter (Right Side), Oil Drain Hose (Left Side), Radiator Drain (Left Side), Coolant Recovery Bottle (Left Side), Radiator Fill Cap (Roof Top), Air Cleaner Element (Left Side), Spark Plugs (Left Side), Battery (Left Side). Connection points include a 3/4" NPT Female Coupling for the fuel line and rear stub-up areas for high and low voltage electrical connections. The enclosure material is Aluminum. Weight data is provided for Genset Only, Shipping Skid, and Shipping Weight.

Key Notes: Minimum concrete pad size is 6" offset of overall dimensions. Allow sufficient room for maintenance. Installation must comply with NFPA 37, NFPA 70, and local codes. Control panel and circuit breaker are accessible via a rear customer access assembly door. Stub-up areas provide access for high voltage (AC load lead conduit, neutral, battery charger connection) and low voltage (transfer switch control wires) connections. Bottom of the generator set must be enclosed to prevent pest intrusion and recirculation of discharge air.

Installation Drawing: 32 & 38 KW Models (Drawing #0K9268-G)

This drawing provides views from the top, left side, right side, and rear. Key dimensions are: Overall Length 1950 mm [76.8 in], Overall Width 888 mm [35.0 in], Overall Height 1171 mm [46.1 in]. Service items are located as follows: Oil Fill Cap (Either Side), Oil Dip Stick (Right Side), Oil Filter (Right Side), Oil Drain Hose (Right Side), Radiator Drain Hose (Left Side), Coolant Recovery Bottle (Left Side), Radiator Fill Cap Access (Roof Top), Air Cleaner Element (Right Side), Spark Plugs (Left Side). Connection points include a 3/4" NPT Female Coupling for the fuel line and rear stub-up areas for high and low voltage electrical connections. The enclosure material is Aluminum. Weight data is provided for Genset Only, Shipping Skid, and Shipping Weight.

Key Notes: Minimum concrete pad size is 6" offset of overall dimensions. Allow sufficient room for maintenance. Installation must comply with NFPA 37, NFPA 70, and local codes. Control panel and circuit breaker are accessible via a rear customer access assembly door. Stub-up areas provide access for high voltage (AC load lead conduit, neutral, battery charger connection) and low voltage (transfer switch control wires) connections. Bottom of the generator set must be enclosed to prevent pest intrusion and recirculation of discharge air.

Installation Drawing: 45 KW Models (Drawing #0K8636-E)

This drawing provides views from the top, left side, right side, and rear. Key dimensions are: Overall Length 1950 mm [76.8 in], Overall Width 888 mm [35.0 in], Overall Height 1171 mm [46.1 in]. Service items are located as follows: Oil Fill Cap (Either Side), Oil Dip Stick (Right Side), Oil Filter (Right Side), Oil Drain Hose (Right Side), Radiator Drain Hose (Left Side), Coolant Recovery Bottle (Left Side), Radiator Fill Cap (Roof Top), Air Cleaner Element (Left Side), Spark Plugs (Left Side), Battery (Left Side), Lube Oil Maintainer Supply Tank Fill Cap (Roof Top). Connection points include a 3/4" NPT Female Coupling for the fuel line and rear stub-up areas for high and low voltage electrical connections. The enclosure material is Steel (ST) or Aluminum (AL). Weight data is provided for Genset Only, Shipping Skid, and Shipping Weight.

Key Notes: Minimum concrete pad size is 6" offset of overall dimensions. Allow sufficient room for maintenance. Installation must comply with NFPA 37, NFPA 70, and local codes. Control panel and circuit breaker are accessible via a rear customer access assembly door. Stub-up areas provide access for high voltage (AC load lead conduit, neutral, battery charger connection) and low voltage (transfer switch control wires) connections. Bottom of the generator set must be enclosed to prevent pest intrusion and recirculation of discharge air.

Installation Drawing: 60 KW Models (Drawing #0L2090-E)

This drawing provides views from the top, left side, right side, and rear. Key dimensions are: Overall Length 1950 mm [76.8 in], Overall Width 888 mm [35.0 in], Overall Height 1171 mm [46.1 in]. Service items are located as follows: Oil Fill Cap (Either Side), Oil Dip Stick (Right Side), Oil Filter (Left Side), Oil Drain Hose (Right Side), Radiator Drain Hose (Left Side), Coolant Recovery Bottle (Left Side), Radiator Fill Cap (Roof Top), Air Cleaner Element (Left Side), Spark Plugs (Left Side), Battery (Left Side), Lube Oil Maintainer Supply Tank Fill Cap (Roof Top). Connection points include a 3/4" NPT Female Coupling for the fuel line and rear stub-up areas for high and low voltage electrical connections. The enclosure material is Steel (ST) or Aluminum (AL). Weight data is provided for Genset Only, Shipping Skid, and Shipping Weight.

Key Notes: Minimum concrete pad size is 6" offset of overall dimensions. Allow sufficient room for maintenance. Installation must comply with NFPA 37, NFPA 70, and local codes. Control panel and circuit breaker are accessible via a rear customer access assembly door. Stub-up areas provide access for high voltage (AC load lead conduit, neutral, battery charger connection) and low voltage (transfer switch control wires) connections. Bottom of the generator set must be enclosed to prevent pest intrusion and recirculation of discharge air.

Generac Power Systems, Inc. | S45 W29290 HWY. 59 | Waukesha, WI 53189 | generac.com ©2025 Generac Power Systems, Inc. All rights reserved. All specifications are subject to change without notice.

Models: 22kw, 27kw, 32kw, 38kw, 22kw RG Protector, 22kw, RG Protector, Protector

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