hello, I need advice replacing an old Jabco toilet with a new. With the existing setup there are two hoses coming up from the floor into the back of the toilet. The new model 29120-3000 does not have any inlets in the back of the toilet but there is a hose in the back of the toilet connected to the pump on the side. Has design changed? What connections are for the two hoses. I use fresh water only and I cannot recall if the toilet is above or below waterline. Thanks in advance. Really appreciate any comments....Ron
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It does have a sea water intake fitting...
But it is hard to see in the literature for it. If you look at the side and back views of the toilet on page 7 of the instructions: http://www.jabsco.com/files/29090_-_29120_-_3000_datasheet.pdf you'll see a barb coming out of bottom of the piece at the top of the pump at about a 45 degree angle...it's even labeled ".75" hose inlet" on the back view drawing. What do you mean by "I use fresh water only?" I hope it means that your boat is IN fresh water, or that you've connected your head intake line to the sink DRAIN line...not that you've connected the toilet intake to your onboard fresh water plumbing. NO toilet designed to use raw (sea, lake, river) water should EVER be connected to the onboard fresh water supply...because it cannot be done without risk e-coli contamination of the fresh water supply, damage to the toilet, or both...and EVERY toilet mfr specifically warns against it. Only toilets specifically designed to use pressurized flush water can safely be connected to the fresh water supply. The sink drain line is the only safe source for onboard fresh water to a sea water toilet. And btw, your toilet IS below the waterline, so you do need a vented loop in the intake, installed as shown in the instructions.
But it is hard to see in the literature for it. If you look at the side and back views of the toilet on page 7 of the instructions: http://www.jabsco.com/files/29090_-_29120_-_3000_datasheet.pdf you'll see a barb coming out of bottom of the piece at the top of the pump at about a 45 degree angle...it's even labeled ".75" hose inlet" on the back view drawing. What do you mean by "I use fresh water only?" I hope it means that your boat is IN fresh water, or that you've connected your head intake line to the sink DRAIN line...not that you've connected the toilet intake to your onboard fresh water plumbing. NO toilet designed to use raw (sea, lake, river) water should EVER be connected to the onboard fresh water supply...because it cannot be done without risk e-coli contamination of the fresh water supply, damage to the toilet, or both...and EVERY toilet mfr specifically warns against it. Only toilets specifically designed to use pressurized flush water can safely be connected to the fresh water supply. The sink drain line is the only safe source for onboard fresh water to a sea water toilet. And btw, your toilet IS below the waterline, so you do need a vented loop in the intake, installed as shown in the instructions.
Simple job difficult answer
Thanks But.... Peggy sorry for the miscommunication. No, we are not connected to the water system on the boat. Before posting I did refer to both links you posted. I do have a copy of your book and the instruction manual. I have also called the maufacturer and a hunter dealer, both could not answer the question of where the two hoses coming up from the FLOOR of the boat in the rear of the toilet get reconnected. The manufacturer could not understand why there were two additional outlets/inlets on their/the existing toilet. There are a total of four hoses coming from the boat that are currently connected to the existing toilet.Discharge and intake which are connected to the pump side of the toilet. IT is understood that the two other hoses may be for venting but they are currently connected to the toilet.Possibly, when the toilet is replaced the two lines can be tied together but will this provide the proper venting. Just wondering, because I would assume someone had to replace the same toilet from the same manufacturer and there are two less holes coming out of the back of the newer model toilet?????
Thanks But.... Peggy sorry for the miscommunication. No, we are not connected to the water system on the boat. Before posting I did refer to both links you posted. I do have a copy of your book and the instruction manual. I have also called the maufacturer and a hunter dealer, both could not answer the question of where the two hoses coming up from the FLOOR of the boat in the rear of the toilet get reconnected. The manufacturer could not understand why there were two additional outlets/inlets on their/the existing toilet. There are a total of four hoses coming from the boat that are currently connected to the existing toilet.Discharge and intake which are connected to the pump side of the toilet. IT is understood that the two other hoses may be for venting but they are currently connected to the toilet.Possibly, when the toilet is replaced the two lines can be tied together but will this provide the proper venting. Just wondering, because I would assume someone had to replace the same toilet from the same manufacturer and there are two less holes coming out of the back of the newer model toilet?????
No...it won't provide venting/siphon break
At least, I don't think it will, based on your description. You do need one of the intake lines and one of the discharge lines...they should fit your new toilet exactly as they did the previous one. But I'm as puzzled as you are by the additional intake and discharge lines... Do you know what's connected to the other ends of all 4 lines? That MIGHT--but no guarantees--help me figure out what the PO installed the extra two lines to do. I dunno whether a photo would help me or not, but I'd like to see what you have anyway.
At least, I don't think it will, based on your description. You do need one of the intake lines and one of the discharge lines...they should fit your new toilet exactly as they did the previous one. But I'm as puzzled as you are by the additional intake and discharge lines... Do you know what's connected to the other ends of all 4 lines? That MIGHT--but no guarantees--help me figure out what the PO installed the extra two lines to do. I dunno whether a photo would help me or not, but I'd like to see what you have anyway.
Will do
Peggy, Tomorrow, I plan the extravaganza. I will keep you informed with digital. ITT also requested to do the same. I hope this is not a senior moment, boy will I be embarrased! Especially, being involved in the constuction industry for the past thirty years........
Peggy, Tomorrow, I plan the extravaganza. I will keep you informed with digital. ITT also requested to do the same. I hope this is not a senior moment, boy will I be embarrased! Especially, being involved in the constuction industry for the past thirty years........
Anti-Siphon
Ron, The hoses that go into the floor actually go up above waterline and end in a anti-siphon valve. Hunter put the vented loop between the pump and the bowl. Your new head has a hose that connects the pump output to the bowl. Remove this hose and hook the two hoses to the pump and the bowl. If you still have the old head around, you will not have the hose connecting the pump and the bowl. Bill
Ron, The hoses that go into the floor actually go up above waterline and end in a anti-siphon valve. Hunter put the vented loop between the pump and the bowl. Your new head has a hose that connects the pump output to the bowl. Remove this hose and hook the two hoses to the pump and the bowl. If you still have the old head around, you will not have the hose connecting the pump and the bowl. Bill
That doesn't make sense, Bill
It doesn't make sense that a line for the intake vented loop would come up from beneath the sole, 'cuz both ends would be attached to the toilet--the line TO the loop connects to the pump...the line FROM the loop connects to the bowl. Even if the PO put the intake loop in the wrong place-between the thru-hull and the pump--there'd still be only one intake line...the line coming from the loop would be attached to it and the pump. Same is true of the discharge line...the line TO the loop would be attached to the toilet discharge fitting on the toilet, the line from the from the loop would connect to the discharge line...no need for a second discharge line. However, if there had been a y-valve--now missing--in the discharge line, one side to the tank, the other side to a thru-hull, that could explain two discharge lines going through the sole...they'd both connect to the y-valve outputs...the hose from the toilet TO the y-valve could be missing. And, if the PO had installed a separate flush water tank (or, hopefully not!), a line to the fresh water plumbing and one to the thru-hull with a y-valve in the intake line to allow the choice between flushing with fresh water water or with sea water, that COULD also explain two intake lines. That's unlikely, but I've learned never to rule out any possibility, because owners--especially engineers--can be VERY creative when it comes to designing complicated solutions to simple problems.
It doesn't make sense that a line for the intake vented loop would come up from beneath the sole, 'cuz both ends would be attached to the toilet--the line TO the loop connects to the pump...the line FROM the loop connects to the bowl. Even if the PO put the intake loop in the wrong place-between the thru-hull and the pump--there'd still be only one intake line...the line coming from the loop would be attached to it and the pump. Same is true of the discharge line...the line TO the loop would be attached to the toilet discharge fitting on the toilet, the line from the from the loop would connect to the discharge line...no need for a second discharge line. However, if there had been a y-valve--now missing--in the discharge line, one side to the tank, the other side to a thru-hull, that could explain two discharge lines going through the sole...they'd both connect to the y-valve outputs...the hose from the toilet TO the y-valve could be missing. And, if the PO had installed a separate flush water tank (or, hopefully not!), a line to the fresh water plumbing and one to the thru-hull with a y-valve in the intake line to allow the choice between flushing with fresh water water or with sea water, that COULD also explain two intake lines. That's unlikely, but I've learned never to rule out any possibility, because owners--especially engineers--can be VERY creative when it comes to designing complicated solutions to simple problems.
Peggy Thats the way Hunter arranged it
The vented loop is not on the intake of the pump. It is on the output of the pump that goes to the bowl. The seawater comes from the seacock directly to the head and not through a vented loop. Maybe not the best way, but that is the way that they did it. I just replaced my head about 3 weeks ago. Bill
The vented loop is not on the intake of the pump. It is on the output of the pump that goes to the bowl. The seawater comes from the seacock directly to the head and not through a vented loop. Maybe not the best way, but that is the way that they did it. I just replaced my head about 3 weeks ago. Bill
Jabsco toilet hose connections
Ron, The new Jabsco toilet is shipped with a short hose between the outlet of the hand pump and the bowl water inlet. You need to remove this short hose and connect where the removed toilet connected. The four hose connections are; 1. Seawater in to pump from thru hull 2. Seawater out of pump to vented loop 3. Return from vented loop to rear of toilet bowl seawater in 4. Waste discharge hose, connects near bottom of the pump This is the way it is on my 340 and the 410 is the same. I wish I took a picture while I was at my boat. Hope this helps Wayne Estabrooks h340 s/v Wind Drift
Ron, The new Jabsco toilet is shipped with a short hose between the outlet of the hand pump and the bowl water inlet. You need to remove this short hose and connect where the removed toilet connected. The four hose connections are; 1. Seawater in to pump from thru hull 2. Seawater out of pump to vented loop 3. Return from vented loop to rear of toilet bowl seawater in 4. Waste discharge hose, connects near bottom of the pump This is the way it is on my 340 and the 410 is the same. I wish I took a picture while I was at my boat. Hope this helps Wayne Estabrooks h340 s/v Wind Drift
That's exactly as it should be, Bill
"The vented loop is not on the intake of the pump. It is on the output of the pump that goes to the bowl." If you read the installation instructions for almost any manual toilet, you'll see that's exactly how it should be installed....which would eliminate any extra hose coming out of the floor, 'cuz--as I posted earlier--the hose TO the loop would be attached to the pump...the hose coming FROM the loop is connected to the back of the bowl. So where does the extra intake hose coming out of the floor fit into that scenario???
"The vented loop is not on the intake of the pump. It is on the output of the pump that goes to the bowl." If you read the installation instructions for almost any manual toilet, you'll see that's exactly how it should be installed....which would eliminate any extra hose coming out of the floor, 'cuz--as I posted earlier--the hose TO the loop would be attached to the pump...the hose coming FROM the loop is connected to the back of the bowl. So where does the extra intake hose coming out of the floor fit into that scenario???
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