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Customer questions and answers for
Generac Power Systems 20kW-6730

Customer questions and answers:
432 Questions
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474 Answers
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Customer questions and answers for Generac Power Systems 20kW-6730

Question

When purchased, does the battery and flex fuel line come with the product; or, do these items have to be purchased separately?

State: FL - Florida
Age: 55-64
This product will backup: Entire Home
asked 1 year ago
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Sugar Pie
Edgewater
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SP,

If you have the unit professionally installed, the installer will include a battery.

If you do it yourself, the battery is not included. The flex line is included in the packet containing product information (inside of the unit).

I hope this helps

Pinky
State: PA - Pennsylvania
Age: 55-64
This product will backup: Entire Home
answered 11 months ago
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Pinky
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Question

Group 26 battery

I had a 7000 kw model 5240 installed in 2007 I need to replace the battery the book calls for a group 26 with 350 crank minimum. Any reason I cannot use a Group 26 with 525 cold crank?

I appreciate your help.

Bu the way I love my Generac Power Generator.

Thanks
State: OH - Ohio
Age: Over 65
This product will backup: Entire Home
asked 11 months ago
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John
Columbus
on 20kW-6730
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answer 1
John,

I have found that the biggest problem in battery placement/replacement is the amount of room Generac allocates for the battery.

As long as it is physically the same size you are fine. You can always increase the cold cranking amount, but I would not recommend decreasing it from the stock battery.

I hope this helps,

Pinky
State: PA - Pennsylvania
Age: 55-64
This product will backup: Entire Home
answered 11 months ago
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Pinky
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Question

The oil on the dipstick indicates Add. How much do I add without overfilling?

asked 11 months ago
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Rob
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Rob,

It really is a matter of feel and experience. Start pouring oil in at a slow rate and gauge how fast/far the level rises. Continue until you reach the proper level.

The total oil capacity is around 1.9 quarts.

If you fill to high you can always drain some out.

Good Luck,

Pinky
State: PA - Pennsylvania
Age: 55-64
This product will backup: Entire Home
answered 11 months ago
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Pinky
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Question

Regulator size for 1" Natural gas piping?

This product will backup: Computer
asked 11 months ago
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rick
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Rick,

Generally the regulator is located at your gas main, and is part of the gas meter. You are able to adjust the gas pressure from this regulator.

You will branch off your gas line to the generator from the meter, or suitable gas line in the house.

I hope this helps.

Pinky
State: PA - Pennsylvania
Age: 55-64
This product will backup: Entire Home
answered 11 months ago
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Pinky
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Question

Lid Lock

I am unable to lock one side of my 20kw generator lid. Other than to prevent theft or tampering, is there any reason the lid needs to be locked? Specifically wondering if keeping it locked helps to seal it against the elements.
State: NY - New York
Age: 45-54
This product will backup: Entire Home
asked 11 months ago
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Anon
Upstate
on 20kW-6730
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answer 1
Anon,

I do not lock the lid to my Generac, if I need to get in I do not want to be looking for my key.

After several rain storms the unlocked lid maintained a good seal. So no need to lock the lid to get a seal.

Take Care,

Pinky
State: PA - Pennsylvania
Age: 55-64
This product will backup: Entire Home
answered 11 months ago
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Pinky
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Question

What comes with the 20 KW unit, mounting pad, control panels?

State: MN - Minnesota
Age: 55-64
This product will backup: Entire Home
asked 1 year ago
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RED
Irving
on 20kW-6730
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The 20kW automatic standby generator will have the control panel and the composite mounting pad already installed upon purchase. The unit will need to be installed as described in the installation guidelines that are provided with the unit, and connected to an automatic transfer switch. Items needed for a complete installation will be the automatic transfer switch, the wiring for the generator and transfer switch system, the pea gravel base or concrete slab for proper mounting of the generator, the fuel supply line, and the battery.
A cold weather kit and/or a wireless remote monitor may be added to the system at any time if desired, as no additional wires are required from the transfer switch to the generator. Both of these optional kits will include the appropriate wiring harness to be installed within the generator.
answered 1 year ago
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GeneracPowerSystems01
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Question

I have a cedar sided house. Do I have to place this unit 5 ft. from the house? If so, it will interfere with interfere with other yard uses.

We also need to know how the base area should be prepared. We plan to place the unit on a relatively flat area. I have been advised by my installation electrical company that it should be sand and then a 3-4 inch layer of 2-3 inch rock. Area should be 3x5 ft. It appears that a 20kW unit will service my house of 3000 sq ft. Is this adequate or can I get by with a smaller unit of 11kW-17kW
State: WI - Wisconsin
Age: Over 65
This product will backup: Entire Home
asked 1 year ago
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thejackpinesavage
northern wisconsin
on 20kW-6730
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answer 1
TJPS,

I have seen reports that the powered exhaust can deleteriously affect gas and plants; the exhaust can get quiet hot/very warm.

However, thus far my local plants have been fine after about 6 months of weekly exercise usage.

Personally, I would recommend that you elevate your generator several inches above grade; you do not want the generator become awash in case of localized flooding. I have my generator sitting on a poured 6 4 inch concreate base that is sitting on 10 inches of stone. This way any water can pass through the stone and the generator should remain dry.

All things being equal, I would recommend the 20KW over the smaller units. Better to have too much capacity than not enough.

Since you are in Wisconsin you want to make sure that you keep the air input and exhaust free of snow buildup.

I hope this helps.

Take Care,

Pinky
State: PA - Pennsylvania
Age: 55-64
This product will backup: Entire Home
answered 1 year ago
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Pinky
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Question

How can I elevate the generator?

Hurricane Sandy destroyed most of my house. As I am rebuilding, I would like to protect my home from future hurricanes and subsequent flooding.

How can I elevate a natural gas generator so that it is several feet above the ground? We received 7.5 feet of water during Sandy. Even if I can't get the unit safely to an eight foot height, could I build a wooden platform five feet above ground? Could a cement pad be placed on top of the wood? If the generator takes in any salt water, will it work?

Thank you!
Desperate in East Rockaway, New York
State: NY - New York
Age: 55-64
This product will backup: Entire Home
asked 1 year ago
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Desperate In east rockaway
East rockaway
on 20kW-6730
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Desperate,

Yes you can elevate your generator; but you cannot use any old type of building materials to do so. The best bet would be to construct an elevated metal support with a non-flammable base to support the generator. You will probably want to bolt the generator to the base.

The key is that the support structure has to be constructed from non-flammable materials.

If the generator takes on any water; especially salt water (due to its corrosive nature), you should not use the generator until it has been fully inspected by an authorized service person.

The additional issues with putting the generator on an elevated platform is that you are now likely to be at a height level where windows and other openings to the house have to be carefully considered. In brief you need to have the corners of the generator at least 5 feet away from any opening. I would even recommend a much greater distance between the forced air exhaust and any opening to the house; and do not cheap out on placing CO detectors in the rooms near the generator.

How are you powering the generator; natural gas or propane? You need to consider how a future storm will affect your ability to have an uninterrupted flow of fuel.

It may not be worth elevating the generator only to have your propane tanks washed away, or the gas company shutting down the gas mains.

You will have to check with your propane distributor to see if they can elevate the tanks. Also, if you are going with propane you should plan on at least a capacity of 500 gallons if not more.

I hope this helps.

Good luck,

Pinky
State: PA - Pennsylvania
Age: 55-64
This product will backup: Entire Home
answered 1 year ago
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Pinky
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Question

Installation distance from a basement window

Hi- I am curious if the air-intake side of the generator can be 3 feet from a basement window as long as the CO2 output side of the generator is more than 5 feet from any windows? My contractor told me that it is fine for the air-intake side to be 3 feet from a basement window as long as the CO2 output side is more than 5 feet. Hoping to confirm.

Thank you
This product will backup: Entire Home
asked 1 year ago
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Steve
NJ
on 20kW-6730
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Steve,

A couple of observations:

1) Page 12 of the Installation Guide indicates that the rear of the generator should be at least 18 inches away from the nearest wall, and that the right and left side need at least 3 feet of unobstructed space. Also you need 3 feet of clearance from the front on the unit.

Further, you need 5 feet of clearance in ALL directions from any opening to the house or shrubs over 1 foot high. The diagram on page 12 shows this 5 foot clearance being measured from the corners of the generator (as if you were drawing an arc).

Other questions to ponder:

1) Is the forced air exhaust direction free of all obstructions? You do not want to CO being forced back in. Could snow or other debris pile up?

2) Will the window be open or closed? If open, is there a draft that might pull the CO inside?

3) Can you seal that window?

4) You certainly want a CO detector inside of the window area.

Additionally, the forced air exhaust is quite forceful, and hot.

I know that the heat from the forced air exhaust can kill plants/vegetation directly in its path.

I hope this helps.

Personally, I would somehow seal that window to prevent airflow as well as place a CO detector nearby.

Good Luck

Pinky
State: PA - Pennsylvania
Age: 55-64
This product will backup: Entire Home
answered 1 year ago
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Pinky
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Question

CSA approved transfer switches

I'm purchasing a 20KW Guardian for use in Canada. Is Nexus switch CSA approved? If not, what other CSA approved power managment devices do you have available?
State: ON - Ontario
Age: 55-64
This product will backup: Entire Home
asked 1 year, 2 months ago
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Derek
On CA
on 20kW-6730
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The Smart Switches that come pre-packaged with the 20kW units are not CSA approved; however, Generac does offer the 20kW generator as a non-packaged item to be utilized with one of our CSA approved transfer switches. The CSA approved service entrance rated transfer switches can be viewed here: http://www.generac.com/Residential/.... Non-service entrance rated switches that include load shedding, such as the RTSR, can be located here: http://www.generac.com/Residential/....
answered 1 year, 1 month ago
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GeneracPowerSystems01
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Question

Is the engine that powers the Guardian Series 20 KW a rich-burn engine or a lean-burn engine?

State: CT - Connecticut
Age: 55-64
asked 1 year, 1 month ago
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Rick
Glastonbury
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The engines for our Guardian series 20kW automatic standby air cooled generator is a rich burn engine.
answered 1 year, 1 month ago
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GeneracPowerSystems01
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Question

Max Size of Main AC Wire for Model 6244

I'm looking to use #2 Al wire for the main AC wire for the 6244 20KW generator. I'm not seeing in any of the documentation what wire sizes the breaker in the generator can accept. Can you confirm if #2 wire will fit?

Thx
State: RI - Rhode Island
Age: 25-34
This product will backup: Entire Home
asked 1 year, 2 months ago
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Derek
Rhode Island
on 20kW-6730
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The 20kW automatic standby generator, model 6244, has a main line circuit breaker rated at 90 amps. The 90 amp main line circuit breaker lugs on the load side will accept a #4-#1/0 Cu or a #2-#1/0 Al wire.
answered 1 year, 1 month ago
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GeneracPowerSystems01
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Question

can a single generator be hooked up to 2 transfer switches?

I have 2 200 amp panels, and the first 2 Generac dealers I met with suggested I get a single 200 amp transfer switch, powering one of the panels, and during installation switch around circuits between my 2 panels so that 1 panel would cover essentials.

Another dealer suggested it would be cheaper for him to use 2 transfer switches (instead of using 1 transfer switch and switching around circuits between panels, which would be a lot of labor). Can the generator be hooked up to 2 transfer switches at the same time?
State: CT - Connecticut
Age: 45-54
This product will backup: Entire Home
asked 1 year, 2 months ago
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sysdawg
on 20kW-6730
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answer 1
Our automatic standby generators and transfer switches can be installed in multiple configurations, including configurations where multiple transfer switches can be utilized, provided the installation meets all local, state, and national codes. Factors such as ease of installation and required updates to the existing electrical set up will affect installation costs. Based on your description above, either installation would be acceptable per our manufacturer’s requirements.
In the event that multiple transfer switches will be utilized, the certified installer or certified electrician should call us directly at 888-GENERAC (436-3722). Please ensure that the caller has the model and serial number on hand for the generator and transfer switches being utilized.
answered 1 year, 1 month ago
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GeneracPowerSystems01
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Question

What size natural gas line is needed to run a 20k generator

asked 1 year, 1 month ago
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Cb
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The gas line should be sized by a Generac dealer or a certified plumber, based on the volume and pressure required. The volume and pressure required for the unit can be located in the owner’s manual and installation guidelines that are provided with the unit. The fuel consumption for each model number can vary, and we recommend ensuring the documentation utilized reflects your particular generator’s model number. To locate a copy of the owner’s manual and installation guidelines for your particular unit, search the model or serial number here: http://www.generac.com/Service/Manu....
answered 1 year, 1 month ago
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GeneracPowerSystems01
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Question

Generac Model #6244. How can I reduce the noise level not to exeed 56 decibels at 15 feet?

"My village requires that standby generators cannot exeed 56 decibels at the nearest property line certified by an International Noise Engineer (INCE), or equally qualified individual, by formula method or field test."

Location of the generator, 18 feet to the nearest property line. What can done to meet the Village of Garden City requirements?
State: NY - New York
Age: Over 65
This product will backup: Entire Home
asked 1 year, 2 months ago
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Polizzi
Garden City
on 20kW-6730
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Generac designs our standby generators with sound attenuated panels and an aluminum, steel, or composite enclosure to minimize noise whenever possible. You can also set the day and time of the weekly exercise cycle to ensure the least amount of interruption. We do make our best effort to manufacture our home standby generators to meet the noise level expectations of our customers. However, there are certain elements of operation that must be considered with an air-cooled engine driven product such as air flow requirements that limit our ability to further sound-proof the enclosure. The 20kW automatic standby generator, at a distance of 23 feet, has a decibel rating of 66 while operating at normal load. Generac does not measure sound output from any other distance, and does not offer other accessories to allow for quieter operation, however, structural or decorative elements, such as a privacy fence, installed at an appropriate distance away from the unit may assist in reducing the noise experienced at a property line.
answered 1 year, 1 month ago
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GeneracPowerSystems01
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Question

Generac model #6244, two questions: • Does this standby generator come with a battery charger integrated into the control panel? • How frequently sho

State: NY - New York
Age: Over 65
This product will backup: Entire Home
asked 1 year, 1 month ago
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poli
Garden City
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answer 1
Poli,

Only the first part of your question appeared.

Yes, the generator does have an internal smart battery charger.

There is no recommended period to replace the battery.

Good luck,

Pinky
State: PA - Pennsylvania
Age: 55-64
This product will backup: Entire Home
answered 1 year, 1 month ago
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Pinky
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Question

How well does this unit operate in high heat and humidity conditions

How well does this unit operate in high heat and humidity conditions
State: LA - Louisiana
Age: Over 65
This product will backup: Entire Home
asked 1 year, 1 month ago
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Bear
Baton Rouge
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Bear,

The generator is designed to operate from a range of -20F to 120F. However at the extreme ends of this range engine power (ie the amount of power the unit can generate) will be diminished.

I could find no reference to humidity in the manual.

Good Luck,

Pinky
State: PA - Pennsylvania
Age: 55-64
This product will backup: Entire Home
answered 1 year, 1 month ago
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Pinky
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Question

During predicted long power outages is there any drawback to switching the unit off each night to conserve fuel & usage?

State: CT - Connecticut
Age: 35-44
This product will backup: Entire Home
asked 1 year, 2 months ago
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Lainey
Greenwich
on 20kW-6730
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Lainey,

There should be no problem switching the unit off every night.

Indeed, Generac recommends powering off the unit every 24 hours to check the oil level.

What is your fuel source, natural gas or propane? I could understand your desire to conserve propane as there could be delivery problems in the event of a severe situation.

I am powered by natural gas and in the event of an extended blackout, I plan on running my unit 24/7. I purchased the unit for such an event, and other than to periodically check the oil level, there is no reason to shut it off.

I hope this helps.

take care,

Pinky
State: PA - Pennsylvania
Age: 55-64
This product will backup: Entire Home
answered 1 year, 1 month ago
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Pinky
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Question

How much propane will the 20kw unit burn if it runs full tilt for one week?

State: CT - Connecticut
Age: 45-54
This product will backup: Entire Home
asked 1 year, 2 months ago
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Mark
Pomfret
on 20kW-6730
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The fuel consumption for the 20kW Guardian Series unit can be located in the owner’s manual and installation guidelines that are provided with the unit, or on the unit’s spec sheet, located here: http://www.generac.com/Residential/.... The fuel consumption for each model number can vary, and we recommend ensuring the documentation utilized reflects your particular generator’s model number. To locate a copy of the owner’s manual and installation guidelines for your particular unit, search the model or serial number here: http://www.generac.com/Service/Manu....
answered 1 year, 2 months ago
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GeneracPowerSystems01
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Question

What yearly maintenance procedures does this unit require?

State: LA - Louisiana
Age: Over 65
This product will backup: Entire Home
asked 1 year, 2 months ago
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Whatsit
River Ridge
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The 20kW automatic standby generator has a recommended service interval of every 2 years or 200 hours, whichever comes first. Proper maintenance includes changing the oil, oil filter, air filter, spark plugs, adjusting the valve clearance, and attending to the battery as needed. A full maintenance schedule will be located in the owner’s manual under the Service Schedule section that includes intervals in which these items should be inspected and changed. A copy of the owner’s manual can be found by searching the unit’s model or serial number here: http://www.generac.com/Service/Manu....
answered 1 year, 2 months ago
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