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Old 05-03-2021, 10:06 PM   #1
Mini-Skoolie
 
Join Date: Apr 2021
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Year: 1998
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Engine: Cummins 24v
HELP with deleting heaters

Looking for advise

We are in the middle of deleting our 2 rear heaters and after tracking the coolant hosing we have realized it also runs through the rear ceiling mounted AC.

we were hoping to keep the AC but after deleting the heater hose circuit we are left with a couple of hose ends

Is it a matter of plugging these two ends, fill up with coolant and... job done?

I can supply pictures tomorrow that may explain my situation better.

Thanks!

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Old 05-04-2021, 08:44 AM   #2
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Those lines to the heater run to your engine cooling system. If you start the bus with those lines open you'll have a mess on your hands and will need more coolant for your system. You definitely want to loop those back together at least, or if you are deleting all of the heaters in the bus trace those lines back to the engine and do your loop there so they aren't running through your cab.
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Old 05-04-2021, 09:37 AM   #3
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You don't want to plug those lines, but loop them together with a union of some sort. Your rear ac unit likely serves as a heater unit as well, which is why there is engine coolant running to it.

If you plug those hoses, you might find the front heater/defroster will no longer work, which is no good and is actually a hazard.

You can keep the ac unit and it will still provide cooling, it just will no longer provide heating.
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Old 05-04-2021, 01:11 PM   #4
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Use one complete section of hose instead of coupling two pieces to make the loop. We reused a good section of coolant/heater hose from the demo to replace the two shorties on the engine.
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Old 05-04-2021, 03:50 PM   #5
Mini-Skoolie
 
Join Date: Apr 2021
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Year: 1998
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Engine: Cummins 24v
Thanks for the information guys. I have some pictures to show my situation better.

The temporary loop is where I have deleted back to so far.

Following that down in the next picture you can see where it meets the lines too/from the heater/ac unit

Then there is the rear heater (controller??) and the other side of the heater loop.

If I take a long piece of hose between there and where I have deleted to, is that the simplest fix?
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Old 05-04-2021, 03:57 PM   #6
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Are you deleting all heaters?
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Old 05-04-2021, 04:29 PM   #7
Mini-Skoolie
 
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Quote:
Originally Posted by Aamafighter View Post
Are you deleting all heaters?
Just the rear 2 and possible the heater side of the AC if it comes to it. Leaving the front/driving heater
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Old 05-04-2021, 04:55 PM   #8
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I think the simplest answer I can think is to trace the coolant hoses to the closest point of their last use (heater) and then loop them there. I don’t know that I would want a bunch of unnecessary hoses out and about for no reason taking up space.
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Old 05-04-2021, 05:08 PM   #9
Mini-Skoolie
 
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Thanks again

so my idea (as shown below) is to connect a pipe straight between the two ends. This minimizes the piping by quite a bit from what it was with the heaters installed

What do we think?
Attached Images
File Type: jpg D4DB4488-AE66-4CD2-8836-0F6DCAE7D77B.jpg (346.0 KB, 1 views)
File Type: jpg E5AEA866-F7BA-4045-ACC9-4EC79D930C44.jpg (322.2 KB, 1 views)
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