Keystone 422 help!

[Jrathbunbriggs]

Hi, we bought a 2017 Keystone. The manual is useless as you know.

I cannot find the third gray tank handle. Can someone please advise?

I’m posting a picture of a hose hole that is behind a locked door. What is it?

Is it true there is only one heat zone in the Fuzion? No heat in garage?

Where do I put the hose in to flush the tanks? I posted a pic below. Signage is lousy. I’m a novice, so please bear with me.

Many thanks!

[chuckster57]

Welcome to the forum :wlcm:

The top picture is your gravity fill for the fresh water tank.

Bottom picture, black tank rinser is the bottom hose connection.

Third gray tank drain handle is often tucked up along the frame on the drivers side, sometimes behind the wheels.

[Signguy71]

Should be on the frame driver side right where the slide starts.