Air Conditioner question

[docsouce]

When the Coleman Mach A/C in my class C is running in the cool high/low position does it pull outside air into the coach, or does it circulate the air. Also when in the fan position does it pull in outside Air? I'm asking because we are going to riding and camping in the 4 corners area and there could be smoke from the forest fires north of there. My owners manual wasn't much help. It's a Coleman Mach 3 #48253c966.

[docsouce]

I appreciate the information. The folks on RV.NET come through again!!

[Boon_Docker]

Also clean the inside filter once in a while.

[j-d]

Doc, Your conclusions are correct. Some room A/C window units have a little passage that can be opened to bring in some outside air. We had an old Coleman Mach RV A/C that I thought had something like that, but it's been a long time so don't hold me to it. Our newer Mach does NOT.

BTW, that diagram is what you need to understand to periodically clean your Roof A/C. It's pictured without the plastic shroud. The angled shrouding over the Blue Part (evaporator) has to come off in order to clean the blue coil, and the drain pan and drain outlets directly under the blue coil. The red coil (condenser) may trap a few leaves but that's usually it. Notice, the air blows through from the front side of that coil.

[Boon_Docker]

docsouce wrote:
Ok.. So the diagram shows the air is being pulled from inside the coach then cooled. So am I right to assume when it is in the fan operation the only difference is that the air does not get cooled? It is just circulated.. I tried looking all over the internet for an owners manual for this unit, but only found installation instruction.

Yes, you have assumed correctly.

[docsouce]

Ok.. So the diagram shows the air is being pulled from inside the coach then cooled. So am I right to assume when it is in the fan operation the only difference is that the air does not get cooled? It is just circulated.. I tried looking all over the internet for an owners manual for this unit, but only found installation instruction.

[ksg5000]

Boon Docker wrote:
Your AC should not be pulling in any outside air just recirculating the air inside the trailer.

x2

[Boon_Docker]

[donn0128]

Actually RV air conditioners, at least all I have seen bring in air from outside suck it across the coils and dump cold air inside.

[Boon_Docker]

Your AC should not be pulling in any outside air just recirculating the air inside the trailer.