2022 Tab 400bd
Looking for clarification regarding fully draining the Alde hot water system between uses.
After much research on this and other forums as well as reading the Alde Compact 3020 manual, I'm still a bit confused as to whether or not I have fully drained the hot water system.
After our last trip, I drained all tanks using the Low Level Drains located on the driver-side rear of our Tab 400bd(pump off, all water taps open). *See bottom photo of Low Level Drains below.
As a step of the draining process, the Alde 3020 manual states: "Open the safety/drain valve by turning the lever"[yellow lever]. Open is in the up position.
I
did not do that step yet hot water exited the Low Level drain when I opened the valve on the outside drain.(Not the yellow lever on the inside.)
1. I'm wondering if I need to still open the yellow Safety/drain lever located inside the camper under the driver-side bed(see photo below) to fully drain all the hot water?
2. If so, which yellow lever should be opened? I'm assuming it's the yellow lever associated with the red (hot water) PEX pipe?
3. Also, what is the purpose of the yellow lever associated with the blue (cold water) PEX pipe?
4. The Alde 3020 manual also states to leave the valve in the open position(up) until the next time the boiler is used. Is this necessary?
Thanks in advance.
Brian

