Rheem GEN20AD-E manual

Questions? Help is just a moment away! Call: Generator Helpline 877-369-9400 Monday-Friday 8:00 AM to 5:00 PM Central Time Generator Systems Installation Manual GEN20AD-E GEN16AD-E GEN15ADC-E[...]

Thank you for purchasing this quality-built Rheem / Ruud standby generator. We are pleased that you’ve placed your confidence in the Rheem or Ruud brand. When operated and maintained according to the instructions in this manual, your Rheem / Ruud generator will provide many years of dependable service. This manual contains safety information to m[...]

3 Table of Contents Important Safety Instructions ........................ 4 Installation .................................... 7 Owner Responsibilities ......................................... 7 Installing Dealer/Contractor Responsibilities ........................ 7 Cold Weather Kit ............................................. 7 Unpacking Precau[...]

4 Save These Instructions WARNING Running engine gives off carbon monoxide, an odorless, colorless, poison gas. Breathing carbon monoxide could result in death, serious injury, headache, fatigue, dizziness, vomiting, confusion, seizures, nausea or fainting. t Operate this product ONLY outdoors in an area that will not accumulate deadly exhaust g[...]

5 WARNING Generator produces hazardous voltage. Failure to properly ground generator could result in electrocution. Failure to isolate generator from utility power could result in death or serious injury to electric utility workers due to backfeed of electrical energy. t When using generator for backup power, notify utility company. t DO N[...]

6 WARNING Starter and other rotating parts could entangle hands, hair, clothing, or accessories resulting in serious injury. t NEVER operate generator without protective housings, covers, or guards in place. t DO NOT wear loose clothing, jewelry or anything that could be caught in the starter or other rotating parts. t Tie up long hair and[...]

7 Installation Equipment Description This product is only for use as an optional generator system which provides an alternate source of electric power and to serve loads such as heating, refrigeration systems, and communication systems that, when stopped during any power outage, could cause discomfort or inconvenience. NOTICE This product does NOT [...]

8 Unpacking Precautions The unit is shipped ready for installation. Avoid damage from dropping, bumping, collision, etc. Store and unpack carton with the proper side up, as noted on the shipping carton. Delivery Inspection After removing the carton, carefully inspect the generator for any damage that may have occurred during shipment. If loss or da[...]

9 Installation Checklist Carbon Monoxide (CO) Detector Carbon Monoxide (CO) detector installed and in working order . Smoke detector(s) installed and in working order . Placement Required permits have been obtained. Generator placed in an area free from Carbon Monoxide (CO) buildup. See Placement of Standby Generator to Reduce the Risk of Carbon Mo[...]

10 Intentionally Left Blank[...]

11 Generator Placement Before installing generator, consult with home owner and convey the following requirements, which must be satisfied before the installation is complete. There are two equally important safety concerns in regards to carbon monoxide poisoning and fire. There are also several general location guidelines that must be met before t[...]

12 All fossil fuel burning equipment, such as standby generators, contains carbon monoxide (CO) gas in the engine exhaust. CO gas is odorless, colorless and tasteless and is unlikely to be noticed until a person is overcome. CO gas can kill you so it is required that the following is included as part of the installation:  t *OTUBMM HFOFSBU[...]

13  t %JSFDU UIFTUBOECZ HFOFSBUPS FYIBVTU BXBZ GSPN PS parallel to the building or structure. DO NOT direct the generator exhaust towards a potentially occupied building, structure, windows, doors, ventilation intakes, soffit vents, crawl spaces, open garage doors or other openings where exhaust gas could accumulate an[...]

14 Placement of Standby Generator to REDUCE THE RISK OF FIRE Requirements: NFP A 37 2010, section 4. 1. 4, Engines Located Outdoors. Engines, and their weatherproof housings if provided, that are installed outdoors shall be located at least 1.5m (5 ft) from openings in walls and at least 1.5 m (5 ft) from structures having combustible walls. A mini[...]

15 A Standby weatherproof enclosure must be at least 5 ft (1.5 m) from windows, doors, any wall opening, shrubs or vegetation over 12 inches (30.5 cm) in height. B Exhaust outlet side of weatherproof enclosure must have at least 5 ft (1.5 m) minimum clearance from any structure, shrubs, trees or any kind of vegetation. C Standby weatherproof enclos[...]

16 Electrical and Fuel Inlet Locations The 3/4 inch N.P .T . fuel inlet connector ( A ) and electrical inlet location ( B ) is shown below . A ½ inch knock-out is provided for the electrical inlet. This inlet may be enlarged or supplemented to accommodate a maximum conduit size of 1 ½ inches. Ensure that the installed conduit(s) enter the unit in[...]

17 Lifting the Generator The generator weighs more than 500 pounds (227 kg). Proper tools, equipment and qualified personnel should be used in all phases of handling and moving the generator . 5 XPwMFOHUITPGwOPNJOBMNJOJNVNTDIFEVMFE steel pipe ( A ), supplied by the installer , are required to lift [...]

18 Access Ports The generator is equipped with an enclosure that has several access panels, as shown. The access panels and the components located behind them are listed below: A - Roof (Control Panel, air filter, oil dipstick, and circuit breaker) B - Front Access Panel (oil drain and oil filter) C - Battery Panel (battery and generator data label[...]

19 To open roof: 1. Insert key into lock ( A ) of front panel. Gently push down on roof above the lock to aid in turning the key. Turn key one quarter turn clockwise. 2. Lift roof to the open position. To remove front panel: 1. Remove the two bolts ( B ) that secure the panel to the unit. 2. Lift panel to remove from unit. To secure front panel: 1.[...]

20 The Gaseous Fuel System The information below is provided to assist gaseous fuel system technicians in planning installations. In no way should this information be interpreted to override applicable fuel gas codes. Consult with your local fuel supplier or Fire Marshall if questions or problems arise. TO THE INST ALLER: Consult with the generator[...]

21 Fuel Consumption Estimated fuel supply requirements at half and full load for natural gas and LP vapor fuels are shown below. LP Vapor (Propane) 20kW 17kW 15kW Full Load Cu Ft/Hr 135 118 109 Gal/Hr (liquid) 3.75 3.28 3.03 BTU/Hr 337500 295000 272500 3/4 Load Cu Ft/Hr 109 99 90 Gal/Hr (liquid) 3.03 2.75 2.5 BTU/Hr 272500 247500 225000 1/2 Load Cu[...]

22 Fuel Conversion The engine of your generator system is factory calibrated to run on natural gas (NG) or on liquefied petroleum (LP) vapor. To convert to either fuel, follow these steps: NOTICE Units are set to NG at the factory. 1. Insert key into lock of front panel. Gently push down on roof above the lock to aid in turning the key. Turn key on[...]

23 System Connectors Low Voltage connections to signal fault contacts, transfer switch communication and auxiliary 12VDC power are made via a field connection terminal block in control board area. Compare this illustration with your generator to familiarize yourself with the location of these connections. A - Two Pin Terminal Block — Used to conn[...]

24 Generator AC Connection System A single-phase, three-wire AC connection system is used in the home generator. The stator assembly consists of a pair of stationary windings with two leads brought out of each winding. The junction of leads 22 and 33 forms the neutral lead, as shown schematically and as a wiring diagram. A complete schematic and wi[...]

25 Grounding the Generator The home generator must be installed as part of a system that includes a listed transfer switch, with neutral to ground bonding at the transfer switch in accordance with installation instructions. Unless mandated by local code, additional grounding to earth at the generator is not required. Any grounding at generator must[...]

26 System Control Panel The generator control panel, located inside the generator housing, is shown below. Brief descriptions of the controls used during installation are: The generator control board, located inside the generator, under the roof, is shown below. Brief descriptions of the controls used during installation are: A - Menu/Programming N[...]

27 Menu MENU ENTER THE MENU (VIEW SETTINGS) PRESS TO CONFIRM SELECTION WHEN PROGRAMMING. ESCAPE (EXIT) RETURN TO LAST MENU ITEM RIGHT ARROW TOGGLE THROUGH MENU OPTIONS SETTING SYSTEM PARAMETERS LEFT ARROW TOGGLE THROUGH MENU OPTIONS SETTING SYSTEM PARAMETERS MANUAL MODE USED TO MANUALLY START THE GENERATOR. PRESS AND HOLD BUTTON TO START THE GENERA[...]

28 NOTE: Date and T ime were set at the fac tory and stored in the control panel memor y . The Exercise C ycle was also set at the factor y . Th e default exercise cycle occurs on T u esdays, at 2 : 00 P .M. Central Standard Time . To updated or change these settings, follow the steps belo w. IF DURING PROGRAMMING NO BUT TONS ARE PRESSED FOR 30 SEC[...]

29 A UT OMA TIC MODE GENERA TOR ON (When Gener ator R unning - Aut o Mode) GENERA TOR READ Y or SERVICE CODE DESCRIPTION (When Gener ator NO T Running - Auto Mode) Control Panel Prompts Automatic Mode In Automatic Mode, the display screen will display via scrolling text:  t (&/&3"503 3&"%:  JG UIF VOJU?[...]

30 Advanced Settings Screen kW kW FLASHING 50/60 Hz FLASHING Hz PHASE VO LTS SOFTW ARE Ver sion Displayed VO LTS FLASHING SINGLE or THREE FLASHING E-Gov ernor Check Stepper Motor will sweep thr ough throttle range for dealer visual verication or or or or or or or or or or Advanced setting parameters are preset at the factory for a typical instal[...]

31 Final Installation Considerations Engine Oil NOTICE Any attempt to crank or start the engine before it has been properly serviced with the recommended oil will result in equipment failure. t Refer to Maintenance in the operator’ s manual for oil fill information. t Damage to equipment resulting from failure to follow this instruction wil[...]

32 Initial Start-up (No Load) The unit has been set-up for NG operation at the factory. Fuel conversion, if needed, must be completed prior to performing these steps. See Fuel Conversion . Before operating the home generator or placing it into service, inspect the entire installation carefully. Then begin testing the system without any electrical l[...]

33 Electronic Governor System The engine electronic governor system allows for improved control and increased generator performance compared to mechanically governed systems. The result is smooth TUFBEZTUBUF PQFSBUJPO XJUIPVU UIFiIVOUJOHw DPNNPO UP many mechanical governors. The system also reduces speed variations under eng[...]

34 Operation Automatic Operation Sequence The generator’s control board constantly monitors utility voltage. Should utility voltage drop below a preset level, the control board will signal the engine to crank and start. When utility voltage is restored above a preset voltage level, the engine is signaled to shut down. The actual system operation [...]

35 Antenna Installation The supplied antenna must be installed before the wireless monitor will operate. 1. Insert key into lock of front panel. Gently push down on roof above the lock to aid in turning the key. Turn key one quarter turn clockwise. 2. Lift roof to the open position. 3. Carefully push out the plug ( A ) located on the inside of the [...]

36 Wireless Monitor The generator is supplied with a battery-powered, wireless monitor. The monitor communicates wirelessly with the generator control panel. The monitor may be placed in a suitable location in the home. The system has a line-of-sight range of about 200 feet, but this distance will decrease if the signal has to pass through walls or[...]

37 Wireless Monitor Operation 1. Remove battery access cover ( A ) on back of monitor and install 2 AA batteries. (Observe correct battery polarity which is embossed in the bottom of the battery compartment). Replace battery access cover. NOTICE The wireless monitor was linked to the generator at the factory. Communication will begin upon the insta[...]

38 Standard Operation: Wireless Monitor Status LED’s  t 5IFXJSFMFTT NPOJUPS SFDFJWFT EBUB GSPN UIF HFOFSBUPS every 10 minutes and displays the generator status through 3 LED’s.  t 1SFTTJOH UIF SYSTEM UPDATE button will provide current generator status by flashing the status LED’s. When pressed, all 3 [...]

39 Schematic Diagram Schematic / Wiring Diagrams LEGEND BW - Plug for Option a l B a t tery W a rmer CB - Ci rcuit Bre a ker CMA - Control Module Assembly COM - Common EW - Plug for Option a l Engin e Oil W a rmer FS - Fuel Solenoid GND - Ground IS - Idle Solenoid LOP - Low Oil Pressure Switch (Closes on Low Press ure) N.C. - Norm a lly Closed N.O.[...]

40 LEGEND BW - Plug for Option a l B a ttery W a rmer CB - Circuit Bre a ker CMA - Control Module Assembly COM - Common EW - Plug for Option a l Engine Oil W a rmer FS - Fuel Solenoid GND - Ground IS - Idle Solenoid LOP - Low Oil Pressure Switch (Closes on Low Pressure) N.C. - Norm a lly Closed N.O. - Norm a lly Open OTS - Over T emper a ture Switc[...]