Run it like a Bean, I have a sort of Bean and I love it. It's basically a Herbie but with a totally dry emergency. It runs completely silent in our living room, and from my understanding the actual Bean design is even quieter.
What is 'a sort of Bean?' OR, what is "basically a herbie but with a totally dry emergency?'
A 'Herbie' has two pipes, one runs as a full siphon, the other one is a DRY emergency. A 'Bean' has three pipes. One runs as a full siphon, a second pipe runs as a 'Durso' or 'Open Channel', and the third is a 'Dry Emergency.' Both systems must run the dry emergency, it is not an addition to either system rather a requirement for safety.
If there is to be a comparison between the two, which only gives rise to mis-information and bad advice in the end, the Bean is like a Herbie, but with an additional partially flooded second pipe, running in open channel mode (not at siphon mode,) which provideds a self adjustment feature, plus an additional level of failsafety. OR the 'Herbie' is like a Bean, but without a partially flooded second pipe, does not have a provision for self adjustment, and has only one level of failsafety.
There are some that have mis-implemented the 'Herbie' due to the proliferaton of bad/mis information, and are running a siphon and a partially flooded secondary ('open channel',) to gain the self adjustment feature of the BA, leaving out the dry emergency. Many that are new to the concepts of siphon systems, are mis-led to believe that this is the way the 'Herbie' is supposed to be run. It isn't. The fact that folks run a drain system this way, does not make it safe. It isn't safe.
Any drain line with water flowing in it, regardless of how much, is a plug/flood risk. The sound adivce for running a siphon system, is: Never run a siphon drain, without a DRY emergency backup. Although the 'herbie' with a partially flooded secondary(open channel) does provide a level of backup if the main siphon becomes plugged, there is no backup if the secondary plugs, and the water will go all over the floor. Adding a dry emergency to the mis-implemented 'herbie' does not make it a 'herbie' with a dry emergency, it makes it a Bean system: not because of the dry emergency, rather because of the partially flooded secondary or open channel.
It may be unfair to keep calling the siphon w/partially flooded secondary a mis-implemented 'herbie,' so in fairness and since the BA came after the 'Herbie,' running a siphon w/partially flooded secondary with no DRY emergency, is a mis-implemented BA system...
