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Old 07-22-2017, 10:41 PM   #11
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sorry Sam - its probably cause its a closed group - Prevost Owners Group on FB, I've requested / recommended you as a member
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'04 Haulmark (M42386) 42', 2 slide, 10kw - Pictures
'04 F350 CrewCab Longbed 4x4, 50g aux tank & gear vendors dbl over
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Old 07-22-2017, 10:43 PM   #12
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ok, thanks Hotter than a 3 ball tom cat here, hows Texas?
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Old 07-22-2017, 10:50 PM   #13
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here you can see, on the LEFT side of the motor - the belt/shaft that turns the side mounted radiator (clutch) fan at the 11-23+ second mark

at around 35 seconds you can see the HUGE (multi-cylinder) over the road air conditioning compressor (damn thing looks like another small engine).

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'04 F350 CrewCab Longbed 4x4, 50g aux tank & gear vendors dbl over
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Old 07-22-2017, 10:57 PM   #14
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'04 Haulmark (M42386) 42', 2 slide, 10kw - Pictures
'04 F350 CrewCab Longbed 4x4, 50g aux tank & gear vendors dbl over
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Old 07-22-2017, 10:58 PM   #15
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Don R.
'04 Haulmark (M42386) 42', 2 slide, 10kw - Pictures
'04 F350 CrewCab Longbed 4x4, 50g aux tank & gear vendors dbl over
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Old 07-24-2017, 03:08 PM   #16
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A simple solution might be to just add an additional add-on A/C evaporator unit, connected to your current compressor and condenser. Just tee the lines. Look at Vintage Air as examples, they are generally designed to put A/C into an older vehicle, but it could be set up to blow into your RV box area. Might not have the full cooling capacity of your roof mount running off the generator, but it would certainly help a bunch. You would not need the extra compressor or condenser, your current truck system probably has enough capacity to handle the second evap. Or might upgrade to a larger capacity compressor if you want. Swapping to larger condenser may be difficult.

Any specialty hose shop can splice your lines and make the new lines to go back to the second evap unit. Many larger vans and SUV's have second evap units in the back area to help cooling the rear vs just the front dash. You are doing essentially the same thing in my example.
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Old 07-24-2017, 09:08 PM   #17
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I can see putting the evap unit just above the cap over bunk. Short run and have to blow back thru the cabin. So just set it up like a car with rear ac.... that a great idea thanks!
Sam
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2005 Renegade #1204 42 footer Columbia M3200CH-435,12 speed auto Cat 12 kw Genset, Roadtrip Mission in-mot Dish Network, Washer dryer combo, Jeep Liberty toad,1973 Cessna Skylane,1955 Chev 210 Belair survivor
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Old 07-26-2017, 09:49 AM   #18
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Most of these trucks had sleepers. and therefore came with rear a/c. You need the sleeper unit from your type of OTR truck, Looks like a 9600 international? You may have to run longer lines but the sleeper unit has it's own blower unit and evap all in one box, and it's designed to be run off the existing engine a/c compressor.
you could put it in a lower cabinet or something.
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Old 07-26-2017, 09:55 AM   #19
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ok ill play along...some more....

whats the "BTU" rating of a dash or sleeper air conditioning unit...
then consider that most coaches NEED a 15k BTU unit for the house.

I doubt a espar, sleeper or dash type air is gonna be enough to keep even a small toters house cool in the summer.
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'04 Haulmark (M42386) 42', 2 slide, 10kw - Pictures
'04 F350 CrewCab Longbed 4x4, 50g aux tank & gear vendors dbl over
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Old 07-26-2017, 09:18 PM   #20
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Don I searched and came up with this:
Dash
20,000 Btu/hr (minimum)
Outside (fresh) air, Panel Vents
90 degF Ambient
in a big truck is what it said.
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