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Originally Posted by noelgp Tom
I read that saniflo does not need a vent? My question is, can I hook the outflow pipe directly to the sewer pipe outside? Otherwise I have to try and connect it to the over head in the basement and there does not look like there is much room left to pipe in. I just got a city sewer hook up and my septic crushed, the main sewer line passes the side of my house and that is where I would like to hook up this pipe? What do you think? Thanks for your advise!! |
You may tie the discharge line into the sewer line outside the house but
you will have to vent the lavatory and toilet. The toilet will wet vent through the lavatory and you may use a mechanical vent on the lavatory if you can't run a vent pipe. However if you use a grinder system that calls for a vent you may not use a mechanical vent on that. Regards, Tom
There are a few issues that the installer needs to know before commencing with the installation of a macerating system.
Venting
As per plumbing code all p-traps need to be vented. Therefore, even though macerating systems are isolated from the main drain system (by means of a check valve), we need to vent the trap of the hand basin, shower, bathtub and possibly a bidet. The following external macerating systems need to be vented: Saniplus, Sanipro, Sanipack and Sanibest.
Products with built-in motors need not to be vented as they are considered to be a forced main. These units are known as Sanicompact, Sanimarin and Sanistar.
External macerating systems have a tapping on the lid, generally located on the right hand side and are 1 ½-inch diameter. To start one need to saw of the cap and connect the provided 1 ½-inch accordion connector to it. Then a street-elbow can be pushed into the other side of the accordion connector and one can finish off the vent installation in 1 ½-inch pipe.
Please note that a vent pipe slopes upwards (¼-inch per foot) when running in the horizontal plane. If one cannot get at the house’s vent system, the vent pipe may run along the joists to the outside of the house. Do not use an air admittance valve (also known as cheater vents). These are one-way devices and block air movement in one direction.
Macerating systems need a two-way air movement, out when the toilet is flushing, i.e. water running into the pump case and in when the macerating unit is pumping water out of the case.
Note: When connecting to a vent system, please push the provided plastic cap into the breather opening located on the left hand side of the lid. Otherwise there exists the possibility for odor (not sewer gas but odor).
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