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Originally Posted by scirocco
bump again? SOMEONE must have worked with sewage ejectors before...
The reason I haven't jumped in is that we don't have any basements in my area. I bumped it up in hopes that one of the other experts would pick up on it. But since they didn't let me give it a shot.
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Should I be considering a dual-pump setup? If so, one as pure backup or should they alternate?
A back up pump is necessary in a basement apartment where the ejection system is the only drainage that there is. This is insurance that if one pump fails the other will take over. Alternating them is a option that you must decide on.
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Are dedicated circuit(s) required?
I'm no electrician but it would seem that any feed that could bring it in contact with water should be dedicated.
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Are any particular type of float switches better? I have heard that swing-type can get caught on stuff, but sliding-post styles can get fouled by "stuff" in the bucket
The only experience I have is with the float ball and swing type in sump pits.
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Can all the lines be combined before emptying into sump bucket? I assume so.. would it be optimal to use 6" line, to also provide a bit more volume in the system?
I can see no advantage in a 6 inch line over a 4 inch one. If you don't wish to use the 2" inputs, if provided, you may cap them off and tie into the 4" main to the ejector pit.
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I know that a dedicated vent is required for the sump system. Can the rest of the fixture group wet-vent (within code) to the sump, and then out via the dedicated vent?
If I understand the question correctly7 You're casking if you may connect the fixture vent back to the pit and use the pits vent to vent the entire group.
The answer to that is a resoumding NO! Dedicated means just that. A dedicated vent for the pit and a fixture vent that you may run out the roof or revent back into a dry vent. There is a reason for this. The reason being that while the house/fixture vent draws air into the drainage system to relieve the suction caused by draining liquid the pit vent both draws and expels air depending on rather the discharge is entering the pippt or leaving it. If the pip vent were connected to the house system you would be pressurizing a system designed for vacume. It could be possible the pressure could force sewer gas back through a trap with a low trap seal. This is why a dedicated pit vent and the house venting system must be kept separate.
As for recommending a certain unit you know best what your requirements will be and how much use the unit will get. Any other experts want to jump in? Tom
