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Posted by daestrom on March 10, 2008, 7:37 pm
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> boustephane@hotmail.com wrote:
>>> The S4-60 model has two shorter coils on the drain pipe. The drain pipe
>>> runs through one and then the other so the greywater side is in
>>> 'series'.
>>> The potable water splits and enters both coils and the outlet of both
>>> coils
>>> rejoin to form a common potable outlet. So the potable side is in
>>> 'parallel'. The G4-60 has just one long coil that covers the drain pipe
>>> length.
>>>
>>> The G4-60 has more pressure drop for a given flow rate through the
>>> potable
>>> water side because of the one long coil, as opposed to the lesser
>>> pressure
>>> drop on the potable water side for the two shorter, parallel coils of
>>> the
>>> S4-60. That was my concern since we have pretty low water pressure here
>>> already, I didn't think I could stand to have the larger pressure drop
>>> of
>>> the G4-60 model.
>>>
>>> But with the S4-60 version and the coils in 'parallel', it is not as
>>> efficient as the G4-60. Because the drain water is partly cooled by the
>>> first coil before it enters the second coil, the second coil doesn't
>>> recover
>>> as much heat as you would expect. If you have plenty of water pressure,
>>> (say > 30 psi), I'd definitely go for the G4-60 version.
>>>
>>> I only clean it about once a year when I think about it. I suppose some
>>> more often wouldn't hurt, but I pretty much just don't pay attention to
>>> the
>>> thing. As I said before, 'cleaning' for me is to dump a bottle of
>>> liquid
>>> drain cleaner down the kitchen sink (the nearest drain) and then about a
>>> quart of water to flush the cleaner to the GFX from the sink trap.
>>>
>>> The only condensation problem I could think of would be the cold water
>>> in
>>> the potable pipe if you have a humid basement situation. But I suppose
>>> you
>>> could wrap it in simple foam insulation much like pipe insulation in
>>> general.
>>>
>>> daestrom
>>> P.S. What type of news-reader are you using? My OE didn't prefix your
>>> message lines with the usual '>' mark.
>>>
>>
>>
>> Thank you for your precious informations an the time spent to answer
>> me.
>>
>> I am interested in this product but I think it is very expensive ( >
>> 500$ ) for a simple pipe surrounded with another square pipe. I have
>> to open a wall to check if my plumbing can allow this tool.
>>
>> By the way it is possible for Canadian having a grant of 130$ for this
>> tool:
>>
http://oee.nrcan.gc.ca/residentiel/personnel/renovation-maisons/renovez-admissible-subvention.cfm?attr=4
>>
>> Thank you again
>>
>>
>> P.S. I use OE for reading news group but using "google groups" web
>> site for sending message since my provider Sympatico (Bell Canada)
>> remove the possibility to send message to the news group with OE
>> (without changing the rate, obviously...).
>>
>
> I'm also with sympatico. Sign up with aioe.org, it's a free newsgroup
> server, I've been using since
> sympatico dumped the newsgroups.
Hmmm.... When I try to 'reply' to your messages, OE properly indents the
'quoted text' :-) But 'boustephane' messages with 'google groups doesn't (I
guess because its web groups?)
TTYL
daestrom
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