Goes up usually. If there is a yellow one it goes up. they usually just mark the top side intended to point upwards. The mesh material has little "u" shaped cups to slow the water from running straight down and out of the drain. Also when you get it going make sure you are not draining more than a liter of water every 5 minutes otherwise you are ready for a new feed tube and orifice to regulate the water flow properly. Good luck!
Answers & Comments
Goes up usually. If there is a yellow one it goes up. they usually just mark the top side intended to point upwards. The mesh material has little "u" shaped cups to slow the water from running straight down and out of the drain. Also when you get it going make sure you are not draining more than a liter of water every 5 minutes otherwise you are ready for a new feed tube and orifice to regulate the water flow properly. Good luck!