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Old 08-25-2019, 09:27 AM   #1
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Venting Inverter bay

I noticed after charging my batteries for several hours from a 30% state the inverter was too hot to touch, the fan was going and the bay was noticeably hot on the 90 degree day. It felt like a space heater blowing from the bay.

My one vent at the bottom is just about 3" x 6" and the bay is sealed otherwise.

I am looking for ideas as to how other manufactures provide venting or how you did a modification.

Pictures please, thanks in advance.
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Old 08-25-2019, 09:45 AM   #2
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Most of the newer coaches have a computer style fan with a snap disk thermostat that runs directly off the house battery system, you would need to be sure there is an inlet for air flow

The snap disk for many is a 110 degree F
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Old 08-25-2019, 11:18 AM   #3
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I've also noticed the heat inside the compartment. The fan just blows the hot air through the invertor. My compartment has vents, but no shrouds to draw the outside air in to the fan.
Waiting to see wat others say.
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Old 08-25-2019, 01:42 PM   #4
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The Tuscany came equipped with the fan and inlet vent. The only downside is the 110F is often triggered by ambient temps if you are in the sun. However if you are using the inverter you do want the air flow so that hasn't been a problem but will run batteries down if you left it stored in the sunlight in 100 degree plus temps.
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Old 08-25-2019, 05:41 PM   #5
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Since posting this I have found a marine fan designed to purge fumes in a engine compartment. It has a flange so I can bolt it to the floor of the bay over a hole I will drill and run a hose to the top. I also have a thermostat I can set to 110 degrees.

I will also a a togel switch to the power line. Spec say is draws 5 amps @12 v.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Old 08-26-2019, 02:20 PM   #6
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No offense kinda seems like over kill.Looks like for dual motor bay.Made to turn over a lot of air .You would only need to turn over a bit more air than the invertor cooling fans can move over heatsink. The one in my boat engine bay mounts to flex hose more of a turbine design. I would think muffin fan would move plenty. That's what's on most of our plants electrical cabinets.
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Old 08-26-2019, 02:33 PM   #7
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Quote:
Originally Posted by 153stars View Post
No offense kinda seems like over kill.Looks like for dual motor bay.Made to turn over a lot of air .You would only need to turn over a bit more air than the invertor cooling fans can move over heatsink. The one in my boat engine bay mounts to flex hose more of a turbine design. I would think muffin fan would move plenty. That's what's on most of our plants electrical cabinets.
I thought about a muffin fan but I was concerned about not moving enough air. Remember this turns on when its already 110 degrees. The worse thing that happens is it cools too much and turn off.
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Old 08-27-2019, 02:48 PM   #8
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Not a problem with this rig as the inverter sits in a bay with a lot of space. My last rig had it mounted in a small air tight bay. I usually turned the charge function off until the cool of the evening. Or opened the bay if I needed to bulk charge during the day.
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Old 08-27-2019, 08:53 PM   #9
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Power Vent Installed

Here is my completed Power Vent for the Inverter Bay.

I used a 12 vdc marine blower and a Granger variable thermostat set at 110 degrees. The bower is flange mounted to the floor where I cut a 3 " hole. I did add a toggle switch in the grey plastic thermostat box. You also see ducting, note it is 4" for a 3" opening but aluminum does squish nicely.

It is hooked up to the Inverter Fuse holder with a 10 amp inline fuse.
You may notice the smoke alarm which was add on.

The bay is much cooler now. I have confidence I will not over temp the inverter.
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