Page 1: Table Of Contents
Controls and Indicators ..... utility power source. Have a Lennox dealer who is Controller Power ......
Page 2: Product Identification Information
California Proposition 65 WARNING Engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Product Identification Information Product identification numbers determine service parts. Controller Identification Record the product identification numbers in the spaces Record the controller description from the generator set below immediately after unpacking the products so that operation manual, spec sheet, or sales invoice.
Page 3: Safety Precautions And Instructions
Safety Precautions and Instructions IMPORTANT SAFETY INSTRUCTIONS. Accidental Starting WARNING Electromechanical equipment, including generator sets, transfer WARNING switches, switchgear, and accessories, can cause bodily harm and pose life-threatening danger when improperly installed, operated, or maintained. To prevent accidents be Explosion. aware of potential dangers and act Can cause severe injury or death.
Page 4 Battery gases. Explosion can cause Servicing the fuel system. A flash Carbon monoxide symptoms. severe injury or death. Battery gases fire can cause severe injury or death. Carbon monoxide can cause severe can cause an explosion. Do not smoke Do not smoke or permit flames or nausea, fainting, or death.
Page 5 Hazardous Noise Short circuits. Hazardous CAUTION voltage/current can cause severe injury or death. Short circuits can CAUTION cause bodily injury and/or equipment damage. Do not contact electrical connections with tools or jewelry while making adjustments repairs. Remove all jewelry before servicing the Welding the generator set.
Page 6: Hot Parts
Hot Parts Notice NOTICE WARNING Canadian installations only. standby service connect the output of the generator set to a suitably rated transfer switch in accordance with Canadian Electrical Code, Part 1. Hot engine and exhaust system. Can cause severe injury or death. Do not work on the generator set until it cools.
Page 7: Introduction
Introduction Nameplate Emission Compliance, RGEN12 The following illustration shows a typical generator set All model RGEN12 generator sets with multi-fuel nameplate. Copy the model, serial, and specification systems are emission-certified. numbers from the nameplate into the spaces provided in An engine or generator set with the following...
Page 8 The Emission Compliance Period referred to on the Emission Compliance, RGEN17/18 engine identification label indicates the number of operating hours for which the engine has been shown to The RGEN17/18 generator set engine is certified to meet EPA emission requirements. The engine meet emission regulations for U.S.
Page 9: Section 1 Features
Integrally mounted to the generator set and engine service manual for additional specifications. LED display: Obtain copies of the latest spec sheets, manuals, Engine runtime, hours diagrams, and drawings from a Lennox dealer. AC voltage 1.2 Generator Frequency (Hz) Battery voltage...
Page 10: Generator Set Components
10. Field-connection terminal block location 22. Fuel inlet 23. Air intake 11. Spark plug locations (both sides) 12. Oil drain hose 24. Engine starting battery location (battery purchased separately) Figure 1-1 Generator Set Components, RGEN12 Section 1 Features XP-6515 4/09...
Page 11 Control detail, top view See control detail ADV-7341A-B 1. Muffler 16. Oil drain valve 2. Oil check 17. Exhaust outlet 3. Oil fill 18. Carburetor heater access opening 4. Air cleaner 19. LP fuel orifice location (inside hose fitting) 5. Spark plug locations (both sides) 20.
Page 12: Section 2 Operation
Section 2 Operation 2.1 Prestart Checklist 2.3 Controls and Indicators To ensure continued satisfactory operation, perform the Figure 2-1 illustrates the user interface and other items following checks or inspections before or at each on the generator set junction box. Figure 2-2 describes startup, as designated, and at the intervals specified in the controls and indicators.
Page 13: Controller Power
Up, and Down. changes under normal operating conditions. Contact a Lennox dealer or service technician if adjustments are When the generator set is running, the up and down required. arrow buttons can be used to step through system data displays as shown in Figure 2-3.
Page 14: Generator Set Operation
2.4.2 Sleep Mode 2. Move the generator set master switch to the OFF/ RESET position. The engine stops. Controllers with application code version 1.13 or higher are shipped with the sleep mode disabled and J1939 Automatic Stopping communication enabled. The controller will remain in standby mode whenever the master switch is in AUTO With the generator set master switch in the AUTO and the engine is not running.
Page 15 2.6.3 Resetting Controller after a Fault 4. Start the generator set by moving the generator set master switch to RUN. Test operate the generator Shutdown set to verify that the cause of the shutdown has been corrected. Always identify and correct the cause of a fault shutdown before resetting the controller.
Page 16 Check for loose connections. Locked rotor The generator set also shuts down on OC if no engine Contact a Lennox dealer for service if rotation is sensed during cranking. Shuts down 3 seconds problem continues. after the fault is detected.
Page 17: Battery Charger
2.7 Battery Charger Display Operating Condition Red ON When the red LED is on, it indicates the Green battery is discharged and the battery charger The generator set is equipped with a 6-amp is recharging at the BULK rate (stage 1). float/equalize battery charger to maintain the engine This charging rate is 6 amps.
Page 18: Section 3 Scheduled Maintenance, Rgen12
Refer to the following service schedule and the runtime hours displayed on the controller display to schedule WARNING routine maintenance. Have a Lennox dealer service the generator set at the designated intervals in the service schedule for the life of the generator set. Service units subject to extreme weather, long operating hours, or dusty or dirty conditions more frequently.
Page 19: Service Schedule, Rgen12
Evidence of vibration, leakage, excessive noise, Weekly temperature, or deterioration Interior of sound enclosure Quarterly * Not necessary for maintenance-free batteries. Lennox dealer only Action Replace as necessary Meggerr is a registered trademark of Biddle Instruments. XP-6515 4/09 Section 3 Scheduled Maintenance, RGEN12...
Page 20: Lubrication System
Reinstall the dipstick and the oil fill cap. °F --20 °C --30 --20 --10 c. Check that the generator set master switch is in Temperature Range Expected Before Next Oil Change the OFF position. Figure 3-1 Engine Oil Selection Section 3 Scheduled Maintenance, RGEN12 XP-6515 4/09...
Page 21: Spark Plugs
Note: Operating the engine with loose or damaged air cleaner components could allow unfiltered air into the engine causing premature wear and 1--514 failure. Figure 3-2 Checking the Spark Plug Gap 1--511 Figure 3-3 Adjusting the Spark Plug Gap XP-6515 4/09 Section 3 Scheduled Maintenance, RGEN12...
Page 22: Cooling System
5. Remove the element cover nut, element cover, and the paper element with precleaner. 6. Remove the precleaner from the paper element. Note: Do not wash the paper element or clean it with pressurized air, as this will damage the element. Section 3 Scheduled Maintenance, RGEN12 XP-6515 4/09...
Page 23: Exhaust System
Battery acid is electrically conductive and Starter Motor, Typical Battery Connection corrosive. Add 500 g (1 lb.) of bicarbonate of soda (baking soda) to a container with 4 L (1 gal.) of water and mix the XP-6515 4/09 Section 3 Scheduled Maintenance, RGEN12...
Page 24: Battery Charger
Battery charger DC lead. See Figure 3-7. Figure 3-8 Fuses 1. LED indicators 4. Fuse 2. Mounting flanges 5. Battery leads, 12 VDC 3. AC power cord Figure 3-7 6-Amp Float/Equalize Battery Charger Section 3 Scheduled Maintenance, RGEN12 XP-6515 4/09...
Page 25: Storage Procedure
4. Place the generator set master switch in the OFF/ RESET position. 5. Connect the battery to a float/equalize battery charger, or charge the battery monthly using a trickle charger. Follow the battery charger manufacturer’s recommendations. XP-6515 4/09 Section 3 Scheduled Maintenance, RGEN12...
Page 26: Section 4 Scheduled Maintenance, Rgen17/18
(i.e. weekly, monthly, computer. quarterly, etc.) Have a Lennox dealer service the generator set at the designated intervals in the service WARNING schedule for the life of the generator set. Service units subject to extreme weather, long operating hours, or dusty or dirty conditions more frequently.
Page 27: Service Schedule, Rgen17/18
* Not necessary for maintenance-free batteries. Each use Number = hours of operation Weekly [ Service more frequently under extremely dusty/dirty conditions. Lennox dealer only Monthly Replace as necessary Meggerr is a registered trademark of Biddle Instruments. Quarterly S/M Service Manual...
Page 28: Lubrication System
4.3.3 Engine Oil Recommendation 4.3 Lubrication System Use 5W-30 API (American Petroleum Institute) Service See Section 4.2, Service Schedule, for oil change and Class SG, SH, or SJ synthetic oil. Synthetic oil oxidizes oil filter replacement intervals. See Section 1.5 for the and thickens less than other oils and leaves the engine oil drain, oil check, oil fill, and oil filter locations.
Page 29: Spark Plugs
3. Fill with oil. Clean the outside of the oil cooler fins with a brush or with compressed air. a. Fill the engine to the F mark on the dipstick. The engine oil capacity is approximately 2.8 L 4.4 Spark Plugs (3.0 qt.).
Page 30: Air Cleaner Service
4. When servicing the air cleaner, check the air 4.5 Air Cleaner Service cleaner base and latch. Make sure it is secured and not bent or damaged. Also, check the element The engine is equipped with a replaceable, high density cover for damage or improper fit.
Page 31: Exhaust System
Battery gases. Explosion can cause severe injury or 4.7 Exhaust System death. Battery gases can cause an explosion. Do not smoke or permit flames or sparks to occur near a battery at any time, particularly when it is charging. Do not dispose of a battery in a Remove all combustible materials from the exhaust fire.
Page 32: Battery Charger
Clean the battery and cables and tighten battery 4.10 Circuit Protection terminals using the service schedule recommendations. To prevent corrosion, maintain tight, dry electrical If the generator set circuit breaker trips or the fuses blow connections at the battery terminals. To remove repeatedly, see Section 5, Troubleshooting, for possible corrosion from battery terminals, disconnect the cables...
Page 33: Storage Procedure
4.11.3 Cylinder Lubrication 4.11 Storage Procedure 1. Remove the spark plugs. Perform the following storage procedure before removing the generator set from service for three 2. Pour one tablespoon of engine oil into each spark plug hole. Install the spark plugs and ground the months or longer.
Page 34: Section 5 Troubleshooting
Fault Codes If the procedures in this manual do not explain how to The digital control displays fault codes to aid in correct the problem, contact a Lennox dealer. Maintain troubleshooting. Fault codes, descriptions, and a record of repairs and adjustments performed on the recommended actions are listed in Section 2.6.
Page 35: Generator Set Troubleshooting
Battery weak or dead Check power to the battery charger. Recharge or replace the battery. Battery charger fuse blown Replace the fuse. Contact a Lennox dealer for service if fuse blows repeatedly. Battery connections reversed or poor Check the connections.
Page 36: Battery Charger Troubleshooting
5.4 Battery Charger Troubleshooting Use the battery charger’s LED indicators and the table in Figure 5-3 to troubleshoot battery charger operation problems. Problem Cause Solution Red LED stays One or more inoperative or damaged cells. Load test the battery and replace, if necessary on for more Battery charger has reduced its output voltage Remove the source of the overload or short.

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