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256  Main Forum / General Discussion / Re: Air conditioner noise on: June 05, 2011, 12:33:27 am
How I modified the Inverter wiring to silence the fan.

In this schematic, I have shown the 120vac wiring only, not the 12vdc wiring to the batteries.  There are two 12 ga Romex wires between the converter/breaker panel and the inverter, solid is hot and dashed is neutral.  When on shore power, the 120vac goes through the inverter to the inverter powered circuits via a relay in the inverter, when there is no 120vac, the relay switches to allow the inverter to supply 120vac from the batteries.  A fan in the inverter comes on periodically to cool the relay because it generates heat to hold in the pass through position.

I installed a DPDT 30A switch as shown so that the power to the inverter powered circuits is selectable either directly from the converter/breaker panel or the inverter.  The automatic pass through relay in the inverter is no longer used and the fan does not come on when the inverter is not used, like at night.  I know that there is now an extra step to use the inverter, but it is worth it me not to have to hear the fan and I don't have to turn off the breaker at night.

The neutral wires have to be switched along with the hot wires because the inverter circuit neutrals need to be isolated from the shore power neutrals when using the inverter, something to do with keeping GFIs from tripping.  I didn't show the grounds in the Romex wires, they need to be tied together at the switch.  There is plenty of extra wire length so that I could just cut into the existing Romex wires.



This is the switch I used, it is rated 30A @125vac and it is being used in a 20A circuit.
http://www.mouser.com/ProductDetail/NKK-Switches/SW3822-RO/?qs=sGAEpiMZZMtNT9UGfLL4ePZ3MDx9vMEG5CDDF4fxKH4%3d


I cut out a blank cover to mount the switch and used a standard elec box with the toggle ears for mounting.
257  Main Forum / General Discussion / Re: Air conditioner noise on: June 04, 2011, 08:32:36 pm
Ok Billy, I will get the info together an post it.

Bob
258  Main Forum / General Discussion / Re: Air conditioner noise on: June 04, 2011, 06:45:11 pm
Lets ask Bob, did you ever figure a way to turn off the inverter? Help

Yes Billy, I turn off the inverter at night by turning off the breaker that supplies 110vac to the inverter.  I too was bothered by the inverter cooling fan cycling during the night.  I did some investigation because it seemed strange that the cooling fan would run when the inverter was not being used at night.

On the 2551, the inverter is located under the passenger side bed and is mounted forward of the converter/breaker panel on the same wood panel.  First I had to determine if I was hearing the converter fan or the inverter fan.  The converter fan will run if you are plugged into shore power and are using a lot of 12vdc or are charging the batteries at a high rate.  You can feel the air flow in the grill on the converter/breaker panel when that fan runs which it turns out is not that often, and I have never heard it at night.  If you hear a fan noise from under the bed and you don't feel or hear the converter fan running, then it is the inverter fan.

The inverter cooling fan should run when it gets warm from working to create 110vac from the 12vdc batteries, although I don't hear it often when running it to watch TV since the current draw is low.  But I was hearing the inverter fan run when it was not in use.  I replaced the inverter (thanks Kermit) and the new one behaved the same.  So I contacted Xantrex a few times and finally found someone who explained that the inverter cooling fan is designed to come on periodically even when not in use to cool the internal switching relay that automatically switches from shore power to inverter power.  I guess the relay is "on" and passing the ac supply through the inverter when the inverter is off.

So, at night, if you switch off the breaker that supplies the 110vac to the inverter (not the breaker that comes from the inverter), the fan will not run.  You also have to turn the inverter control panel off or the inverter will now use the batteries to keep the TV and DVD player on standby.

Since I love a challenge, I decided to rewire the ac side of the inverter and installed a switch so that I manually put the inverter on line when needed.  So now if I want to use the inverter, I have to press a switch that I installed on the wood panel under the bed in addition to the inverter wall control panel.  I won't go into the details of that mod unless someone is interested.

Bob
259  Main Forum / General Discussion / Re: automatic awning questions on: May 29, 2011, 04:06:42 pm
Yes, you can lower or tilt the awning.  Pull down on each corner and lock in position using the knob on the arm.

Bob
260  Main Forum / General Discussion / Re: 2551 distance between the two beds on: May 27, 2011, 09:08:47 am
We bought a runner from Walmart that fits perfectly between the twin beds. It was 30 X 46.

gradygal,

Is that runner actually 30 inches wide?  My 2010 2551 measures 28 inches between the beds on the floor, just curious if the 2011 is different?

Bob
261  Main Forum / General Discussion / Re: 2551 distance between the two beds on: May 26, 2011, 06:24:52 pm
Hi Sue,

I snuck out to the RV while my wife was resting with her broken ankle, the width on the floor is 28 inches.

Bob
262  Main Forum / General Discussion / Re: TV & battery disconnect? on: May 26, 2011, 11:08:45 am
After my last post I thought of a reason for not entirely isolating the 'House' batteries; that being to keep them fully charged.

Good thought, but on my 2010, the disconnect switch isolates the house batteries from all circuits in the fuse panel and from the converter/charger, so the batteries will not get charged when disconnected.  I sometimes disconnect the battery if I am plugged into shore power for a long time so that the batteries are not "overcharged".  Not sure if that is an issue with the three stage Xantrex charger, it is supposed to drop to a trickle charge.

Bob
263  Main Forum / General Discussion / Re: Where is everyone going this weekend? on: May 26, 2011, 10:48:02 am
We were going to be on the Oregon and Washington coasts for three weeks getting our fill of clam chowder.  But my wife fell last weekend and broke her heel, had surgery and now has screws and wire in her foot.  Has to have no weight bearing for 8 weeks, so we will not be going out in the RV for a while. Cry Cry

We did get out in the RV 4 months in the past year, so maybe we need to give the RV a rest anyway. shrug

Bob
264  Main Forum / General Discussion / Re: TV & battery disconnect? on: May 25, 2011, 11:39:33 pm
Well, just to complete the picture, there are still a few things connected directly to the battery when the battery disconnect switch is disconnected.  As discussed, the inverter is active IF the inverter control panel is on, the macerator pump will run IF switched on, the slide will operate IF the switch is pushed.  These items were not run through the battery disconnect switch probably because of the high current draw that the disconnect switch could not handle.  As long as these items are not operated, there is no parasitic current draw that would draw the batteries down.

This description applies to my 2010 2551.
Bob
265  Main Forum / General Discussion / Re: TV & battery disconnect? on: May 25, 2011, 06:42:44 pm
My 2010 is just as JDW describes.  The inverter is wired directly to the batteries, if you have the inverter control panel on, then the inverter provides 110 vac to everything it is wired to when there is no 110vac from either shore power or generator, no matter what position the battery disconnect switch is in.

Bob
266  Main Forum / General Discussion / Re: 2350 leans to passenger side on: May 22, 2011, 01:35:08 pm
My 2010 2551 had a lean, although I didn't notice it until PJCorey mentioned it regarding her 2010 2551.  Talked with Kermit last summer and he said they installed a 1/2" spacer between the spring pack and axle on the driver side to compensate for the slide.  He said they had since discovered that the spacer was not really needed and no longer put them in, and that I should have mine removed.  I did and it now sits level.

You might look at where the spring pack sits on the axle and see if both sides look the same, no spacer.  Also a call to Kermit to would be a good idea.

Bob

This is the spacer I removed.
267  Main Forum / General Discussion / Re: help on: May 20, 2011, 12:33:01 am
Haven't had a problem with mine yet, it stays where I set it.

I checked the old one I took off and found info marked on it.  It is a Rotaire from dwincorp.com.  I checked their website and the dampered model is 3840R.


http://dwincorp.com/product_info.php?cPath=54&products_id=277&osCsid=d1d4a60d28cb527

Bob
268  Main Forum / General Discussion / Re: help on: May 19, 2011, 08:44:03 pm
I put one on the bathroom outlet and it works great, the bathroom got too hot and now we can adjust it down and divert more to the front outlets.

I found them at two RV dealers parts departments in Reno.  One was a direct replacement by the same manufacturer, and the other woudn't work because it was for a smaller cutout and the screws went into the existing cutout not into the wood.  So check around to find the same brand, maybe take the old one with you.  It is an easy job, just remove the three screws and pull it out, the excess flex duct comes out with it so you can pull the duct off and put it onto the new outlet and replace the screws.

Bob

This is what it looks like, just turn the knob and the two flaps behind the grill close like a butterfly valve,  Oh, and it is two screws, not three.
269  Main Forum / General Discussion / Re: Another Measurement Question on: May 19, 2011, 05:39:21 pm
My 2010 2551 measures 20 inches from the carpet to the top of the seat cushion.

Bob
270  Main Forum / General Discussion / Re: 2551 Closet Dimensions on: May 19, 2011, 10:26:52 am
Bob,
Love the laundry bag idea. George will have another project, although a small one.

Judi

Sorry George  Grin  Grin
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