Water heater ready to kill

[the middle]

Hello,
I run this post to avoid an old couple dying stupidly.
I discovered that they have a gas water heater to make their hot water.
the problem is that the grandpa disconnects his chimney when he has finished using hot water, and he puts a plug in it to prevent the cold from entering his bathroom.
One day, he will forget to reconnect the chimney, and it will be a disaster.
Question: is there a chimney flap, which prevents the cold from entering when the water heater is off ?.

[jonule]

Hello,
yes it exists at brico depot it is a non-return valve, it exists in diameter 100, 125 and maybe 80, you can wedge it with putty.

http://www.bricodepot.fr/st-germain-du- ... prod10755/

I use this on my range hood at home; =)

otherwise there is this:
http://www.bricodepot.fr/st-germain-du- ... prod13560/

I think it fits on a chimney, the valve is made of metal, on the other hand it must be observed: there is a certain pressure to exert on the valve, otherwise it does not open: it is then necessary to favor the horizontal position.

otherwise you have to opt for a suction outlet and make a waterproof box around the water heater?


I personally want to make an electric non-return valve, like a fire damper, if someone knows a trick?
it is for the air intake of my stove, so that it opens only when it heats up (there is a 320 ° C thermostat probe in the chimney flue to control the circulator of the heat exchanger coil).

@ +

[Gaston]

Hello,
yes it exists at brico depot it is a non-return valve, it exists in diameter 100, 125 and maybe 80, you can wedge it with putty.

http://www.bricodepot.fr/st-germain-du- ... prod10755/

It only works with forced ventilation and therefore not for an exhaust chimney of a water heater which is in natural draft

[jonule]

ok, in this case either install forced ventilation, or as what I am looking for the air intake of my wood stove, install a fire damper type.
helios, france air etc make this system:
http://www.megawatthydro.com/fr/produit ... -12--77135
€ 118:
http://la-centrale-pro.com/volets-motor ... oteur.html
in addition:
http://www.sifataeraulique.fr/pages/ima ... que/v9.jpg

we can therefore make it ourselves:
http://www.forumconstruire.com/construi ... -38559.php

there is the system with motor and limit switch, so bipolar switch for reversing, as for manufacturing a motorized plumbing valve for boilers:
http://mon.danstagueule.fr.free.fr/NRJr ... laire5.jpg

good here I will see to make me mine ...

[raymon]

For an older person maybe you should try to offer them an electric water heater anyway safer and no gas bottle to carry.

[the middle]

For an older person maybe you should try to offer them an electric water heater anyway safer and no gas bottle to carry.

He is too stingy the grandpa (not rich too)
Hala, what a problem, and what a disaster ...

[elephant]

CO poisoning is far from a fiction. A plumber of my friends has twice had the police at his house following deaths.

Fortunately, he was able to get double his bills where he was putting out a liability waiver for people who had refused to have their installation modified.

2 things:

air intake at the bottom of the bathroom door, at least 15 X 50 cm and possibly also at the top. (well, if he doesn't block them)

CO detector.

I had the opportunity twice to find myself in a dangerous situation and now I spot the problem quickly:

feeling of burning lungs and sudden headache.

Sadistic interlude:

Well, that the cons die: this is always that more in the budget of pensions and social security!

[jonule]

126 € delivered the valve to 118 € that I indicated,
if not I think to build mine, with ditto a disc inside a tube, PVC for me but in sheet metal it is the same;

I think with a stepper motor kit it's playable:
http://www.conrad.fr/ce/fr/product/0635 ... archDetail
with switches / reversers:
http://www.conrad.fr/ce/fr/product/7052 ... archDetail

otherwise I think that with a small 9 to 12 V motor supplied by a transformer 220> 12 it must do it, using 2 small switches as mentioned above for the limit switches, and a changeover relay:
http://www.conrad.fr/ce/fr/product/505376/

what is necessary is that the disc which closes / opens inside the tube is connected to a central axis, which protrudes beyond the tube (air to be closed) on which it is necessary to tinker a support to carry limit switches.

ah it also tempts me to save 126 € ...
if only it was offered at half price commercially!
but this kind of product is not yet popular enough ...

[chatelot16]

there were water heaters installed without a chimney! At a certain time, the chimney was only obligatory for a bathroom water heater ... for a kitchen, the burnt gases remained in the room, like a gas stove!

the non-return valve avoids a return of cold air through the chimney, which is quite rare ... it is rather the excess of draft which sucks too much hot air from the room, and brings in air cold by all the leaks that we need to plug

so the cap on the chimney remains a simple means ... not worse than a non-return valve which can also get stuck

of course the best solution is a completely waterproof home water heater, unfortunately rare and expensive

these fully open gas heaters are dangerous: there are regular accidents with gas boilers of this kind when there is a fault in the chimney

[Did67]

And a good CO detector that whistles in your ears (or the grandpa's sound level)!