Hi folks,

I want to fit a cylinder stat to my hot water cylinder as for some reason it
doesn't have one, but the cylinder is coated in a sort of foam insulation.
Presumably the thermostat would need to make direct contact with the
cylinder metalwork. Is it just a case of cutting/piercing through the insulation?

Thanks fir any help.
J.

Just cut the insulation out so the thermostat sits up against the tank.
"scuzzle"  wrote in message 
news:cLELe.4825$4y6.4552@newsfe7-gui.ntli.net...

> Hi folks,
>
> I want to fit a cylinder stat to my hot water cylinder as for some reason 
> it
> doesn't have one, but the cylinder is coated in a sort of foam insulation.
> Presumably the thermostat would need to make direct contact with the
> cylinder metalwork. Is it just a case of cutting/piercing through the 
> insulation?
>
> Thanks fir any help.
> J.
>
> 

In article <ddn5kn$gf4$1@news8.svr.pol.co.uk>,
	"Paul Saunders"  writes:

>Just cut the insulation out so the thermostat sits up against the tank.


....but be very careful. The copper underneath can be unbelievably thin.

-- 
Andrew Gabriel

"Andrew Gabriel"  wrote in message
news:42ff75f9$0$38038$5a6aecb4@news.aaisp.net.uk...

> In article <ddn5kn$gf4$1@news8.svr.pol.co.uk>,
> "Paul Saunders"  writes:
> >Just cut the insulation out so the thermostat sits up against the tank.
>
> ...but be very careful. The copper underneath can be unbelievably thin.
>


He's right. I'm told it can be as little as 0.2mm

Steve

"shazzbat"  wrote in message
news:ddpo98$rs4$1@newsg2.svr.pol.co.uk...

>
> "Andrew Gabriel"  wrote in message
> news:42ff75f9$0$38038$5a6aecb4@news.aaisp.net.uk...
> > In article <ddn5kn$gf4$1@news8.svr.pol.co.uk>,
> > "Paul Saunders"  writes:
> > >Just cut the insulation out so the thermostat sits up against the tank.
> >
> > ...but be very careful. The copper underneath can be unbelievably thin.
> >
>
> He's right. I'm told it can be as little as 0.2mm
>


I meant to add I was told that by someone who accidentally cut one open with
a stanley knife :-))


> Steve
>
>

"scuzzle"  wrote in message news:cLELe.4825$4y6.4552@newsfe7-gui.ntli.net...

> Hi folks,
>
> I want to fit a cylinder stat to my hot water cylinder as for some reason it
> doesn't have one, but the cylinder is coated in a sort of foam insulation.
> Presumably the thermostat would need to make direct contact with the
> cylinder metalwork. Is it just a case of cutting/piercing through the insulation?
>
> Thanks fir any help.
> J.
>


Thanks for all the info folks.
I could probably cut into the insulation with something
blunt made of plastic to save having a DIY disaster
of the worst kind!

I imagine there will be some instructions with the thermostat
when I buy it indicating the best positioning for it.
From what I can remember they are usually positioned about
half way up the cylinder.

J.

In article <iCgMe.9751$Mf6.781@newsfe2-gui.ntli.net>, scuzzle
 writes

>
>"scuzzle"  wrote in message news:cLELe.4825$4y6.
>4552@newsfe7-gui.ntli.net...
>> Hi folks,
>>
>> I want to fit a cylinder stat to my hot water cylinder as for some reason it
>> doesn't have one, but the cylinder is coated in a sort of foam insulation.
>> Presumably the thermostat would need to make direct contact with the
>> cylinder metalwork. Is it just a case of cutting/piercing through the insulation?
>>
>> Thanks fir any help.
>> J.
>>
>
>Thanks for all the info folks.
>I could probably cut into the insulation with something
>blunt made of plastic to save having a DIY disaster
>of the worst kind!
>
>I imagine there will be some instructions with the thermostat
>when I buy it indicating the best positioning for it.
>From what I can remember they are usually positioned about
>half way up the cylinder.


Usually about third of the way up, higher & the tank is half empty before
the stat realises it needs a top-up, lower and the boiler is cycling every
time you fill a sink.

I cut the surface of the insulation with a stanley knife then scooped out the
foam with something blunt. Probably not necessary but I put some copper
based thermal grease on the back of the stat capsule to get a good
contact with the cylinder and cut a little groove in the insulation near the
stat to let the expanding wire fixing strap push it right onto the surface.
-- 
fred

"fred"  wrote in message news:uzubALAYZbADFwhO@y.z...

> In article <iCgMe.9751$Mf6.781@newsfe2-gui.ntli.net>, scuzzle
>  writes
>>
>>"scuzzle"  wrote in message news:cLELe.4825$4y6.
>>4552@newsfe7-gui.ntli.net...
>>> Hi folks,
>>>
>>> I want to fit a cylinder stat to my hot water cylinder as for some reason it
>>> doesn't have one, but the cylinder is coated in a sort of foam insulation.
>>> Presumably the thermostat would need to make direct contact with the
>>> cylinder metalwork. Is it just a case of cutting/piercing through the insulation?
>>>
>>> Thanks fir any help.
>>> J.
>>>
>>
>>Thanks for all the info folks.
>>I could probably cut into the insulation with something
>>blunt made of plastic to save having a DIY disaster
>>of the worst kind!
>>
>>I imagine there will be some instructions with the thermostat
>>when I buy it indicating the best positioning for it.
>>From what I can remember they are usually positioned about
>>half way up the cylinder.
>
> Usually about third of the way up, higher & the tank is half empty before
> the stat realises it needs a top-up, lower and the boiler is cycling every
> time you fill a sink.
>
> I cut the surface of the insulation with a stanley knife then scooped out the
> foam with something blunt. Probably not necessary but I put some copper
> based thermal grease on the back of the stat capsule to get a good
> contact with the cylinder and cut a little groove in the insulation near the
> stat to let the expanding wire fixing strap push it right onto the surface.
> -- 
> fred


Thanks for the info Fred.

J.