Originally Posted by PNW_Steve
I am getting ready to pull the condenser and evaporator (carrier) out of an E450 5 row. I wonder if I might re-task those pieces?
Perhaps mount the evaporator facing forward just aft of the drivers seat.
I did see some Thermo King APU's for $600-$900 for just the APU. No condenser or evaporator. Than would be a bit more flexible but I am back to running a second engine while running down the road.
Back to what you said Christopher, if I engine mount the compressor and run lines all of the way forward then mount the evaporator directly above the first baggage bay and place the condenser in the first (modified) baggage bay. That would place both pieces as far forward as I can and within about eight feet of each other.
Do I understand correctly then that I would need: compressor, receiver-dryer and expansion valve? Those would all live in the engine compartment?
the evaporator in your van should have a TxV valve built in depending on how they tied it into the factory dash A/C.. the receiver dryer you will want to buy brand new they should not be re-used.
your evaporator may have a freeze-thermostat built in, if not those are easy and cheap.. the dryer goes in the Liquid line between condenser and evaporator.. it can be near either.. the TxV expansion valve goes at the evaporator inlet...
what you want to do sounds very viable..
you can go as elaborate or as simple as you want on your temperature control..
the Trans/AIR in my bluebird has 2 fan speeds (resistor block) and 2 temperature settings.. cool and cold.. the cold setting keeps the coil temp at just above freezing.. the cool setting keeps the coil temp about 45 or so... both are simple mechanical tube thermostats mounted on the evaporator and wired to the driver control.. 45 coil temperature means it cycles the compressor when the coil temp reaches about 45 (usually means I get about 55 degree air out opf the vents)...
freon Lines.. you will have a line that goes from the compressor to the condenser inlet.. from the condenser outlet you go to the receiver dryer.. then from their to the evaporator inlet (TxV inlet)... then from the evaporator outlet you go back to the compressor...
most times on the receiver dryer theres a schraeder valve where you screw on a Trinary pressure switch that goes in series to the power for the compressor... if your freon leaks out it disables the compressot.. and also disables the compressor if the pressuer goes too high.. (fans quit or such)...
back to your E450 Van, if you plan to keep the dashboard A/C in it after removing the rear... it mah not have a condenser in front of the radiator... not all of the busses with rear units also have that front condenser.. a trip to the boneyard for a ford condenser and you can re-connect just your dash air in that Van... if you are lucky it already has one...