Waste tanks

[paluka44]

Just picked up our 2015 Columbus 320rs and we are very happy with it. I see there are two Black tanks and three Grey tanks. Will they fill up together or do I need to connect them somehow. I have black and grey pulls in the service compartment and another drain pull under the trailer near the service compartment. Three grey tanks are not very helpful if they are all separated. Any info on this will help. Thanks

[iceblaze580]

I've got the 325 RL on mine one grey tank is bathroom the other grey tank is the kitchen the black is self explanatory but that's toilet tank all tanks empty in to one discharge hope this helps

[mikkeeh]

How was it explained during your PDI? I've never seen 2 black tanks with just one toilet? Does your unit have 2??

[iceblaze580]

I know when I got mine the valve marked galley in the bay was really the bathroom grey water the one outside was kitchen grey water

[paluka44]

The service panel indicates all these tanks. I can't physically see what tanks I have. The walkthrough technician showed me the second slide valve pull under the trailer but was not sure how it was setup. Im hoping if we dry camp for a few days that all grey tanks fill, because it would be senseless having them if only one keeps filling up and one is almost empty.

[iceblaze580]

Both of the grey tanks are separate