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Post by DIYDafty on Aug 23, 2019 17:35:55 GMT
...and do they each need to go into a trap?
Hi All
Trying to work out my new "studio" kitchen plan. I have a 40mm drain pipe running back of the units. I think there might just be enough space for it behind freestanding dishwasher but its hard to be accurate. I'm guessing its better to have dishwasher and washing machine either side of the sink so that they don't need separate traps? I originally had them in a line so washing machine, then dishwasher then sink but now thinking the washing machine might struggle to reach the trap under the sink or could it have its own trap? How much room would it need? Maybe I could site the washing machine trap directly above the 40mm drain pipe so it doesn't protrude much more ?
I know I'm unlikely to get answers to all these questions but any general pointers and specific answers much appreciated !
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Post by dickpuller on Aug 23, 2019 18:18:50 GMT
There’s generally more room behind a Washing Machine than a DW Dafty, DWs tend to be full depth, so either run your waste pipe at very low level or behind the WM.
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Post by battle1066 on Aug 23, 2019 18:56:27 GMT
For your own home each appliance should have its own standpipe drain which then goes directly outside to the drain gulley for two main reasons
Modern washing machines and dishwashers can throw out an error message if they both try to empty at the same time and can require an engineer to cancel the code and other back feeding issues etc.
Noise from either machine emptying between cycles can be annoying in shared kitchen dinning room type idea, if it's just connected to the sink Christmas tree easy connection point.
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Post by DIYDafty on Aug 23, 2019 21:04:46 GMT
For your own home each appliance should have its own standpipe drain which then goes directly outside to the drain gulley for two main reasons Modern washing machines and dishwashers can throw out an error message if they both try to empty at the same time and can require an engineer to cancel the code and other back feeding issues etc. Noise from either machine emptying between cycles can be annoying in shared kitchen dinning room type idea, if it's just connected to the sink Christmas tree easy connection point. Thanks Battle but that sounds like very bad news for me.  Its on the first floor above the garage. There is only one 40mm drain pipe running behind cupboards (2-3M long) before it hits a first vertical down to the garage below. There's definitely no space for a Christmas tree but see your point. Would it really be that bad to drain to the sink ? Alternatively there might be space to drain directly to the 40mm drain pipe - would that be better than going in under the sink? To tell you the truth the only reason I thought about going via the sink was because the bosch install instructions (step 3) seem to show that. media3.bosch-home.com/Documents/9000649495_I.pdfI've no doubt having separate runs to the stack or outside drain would be a lot better as you suggest but that would give me nightmares of how to achieve. Edit: Maybe I could have a stand pipe for each appliance because it doesn't sound like these appliances need traps as such? |
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Post by DIYDafty on Aug 23, 2019 22:02:13 GMT
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Post by battle1066 on Aug 24, 2019 5:36:22 GMT
They both will work and will suit your situation - again for myself it's the standpipe technique simply because you get very little noise when either machine is emptying, with no back feeding issues either, if both empty together because of the air gap between the standpipe and machines discharge hose.
Just think the lodger now rents your house and you now live in the flat and all you can hear is gurgling when your watching the TV and the washing machines on you'd hate yourself!
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Post by rocketmanbkk on Aug 24, 2019 7:55:15 GMT
Can you not core through the wall for each & put into stack?
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Post by Deleted on Aug 24, 2019 9:58:34 GMT
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Post by endfeed on Aug 24, 2019 10:08:11 GMT
Do they have a built in n.r.v?
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Post by Deleted on Aug 24, 2019 10:10:21 GMT
Do they have a built in n.r.v? They do mate  |
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Post by Deleted on Aug 24, 2019 10:11:27 GMT
I use them when installing water softeners for their discharge
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Post by endfeed on Aug 24, 2019 10:20:52 GMT
Might take my w/machine trap away from back of w/machine and replace with one of them. Get some unpleasant smells from it at times and Mrs E blames me!
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Post by Deleted on Aug 24, 2019 10:34:09 GMT
Might take my w/machine trap away from back of w/machine and replace with one of them. Get some unpleasant smells from it at times and Mrs E blames me!  |
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Post by dickpuller on Aug 24, 2019 11:26:27 GMT
Ah infamy, infamy.......they’ve all got it in-fa-me!! |
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Post by DIYDafty on Aug 24, 2019 12:48:42 GMT
Thanks a lot guys for the info.
So if I used one of those I would need a trap? Looks useful but maybe more so for existing installations than brand new ones?
Not sure if this "diagram" is clear - if not I'll post up a proper one.
<No stack behind this wall>
--------------------------------------------------------------------------
PipePipePipePipePipePipePipePipePipe
| Cabinet : WashingMashing : Sink : Dishwasher
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So did I understand that ideally each appliance would have its own pipe to the stack. Since that would be hard, would I gain anything by having standpipes behind sink (for dishwasher) and washingmachine (for itself) rather than going in at the trap under the sink ?
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