Quick bit of advice please

rmaynard · May 1, 2012

iv got to go to a customer tomorrow to change an immersion, iv worked on these before and had no problems but iv not done one on a pressurised system, is there a specific way to drain the system down, if its beyond be i will get a plumber mate to come with me but its something i would like to try so i have the knowledge, thanks and any adivce appreciated.

Rob

telectrix · May 1, 2012

let me know how it works out. i also have not worked on a pressured system. if you have to pick a plumber's brains, it shouldn't take long. LOL.

rmaynard · May 1, 2012

cheers tel, iv got my fingers crossed its just the stat that needs changing so i dont have to mess about draining it down

telectrix · May 1, 2012

don't forget to take your test meter/s. LOL.

KFH · May 1, 2012

The pressurised side is the heating side of the cylinder. The immersion will be on the normal hot water take off side of the cylinder which is supplied by the tank in the attic, in this case you can drain down the hot water system as normal as you should not be touching the pressurised side of the cylinder. Unless of course it is the primatic type of cylinder which I have never worked on.

rmaynard · May 1, 2012

telectrix said:
don't forget to take your test meter/s. LOL.

no its ok iv got my neon screwdriver and my volt stick, i will be just fine :46:

rmaynard · May 1, 2012

KFH said:
The pressurised side is the heating side of the cylinder. The immersion will be on the normal hot water take off side of the cylinder which is supplied by the tank in the attic, in this case you can drain down the hot water system as normal as you should not be touching the pressurised side of the cylinder. Unless of course it is the primatic type of cylinder which I have never worked on.

not sure what primatic is?!?!, iv not looked at the job yet but if thats the case then it should be like any other immersion change

KFH · May 1, 2012

If my memory is right the primatic type has a bubble in the middle to keep the heating and hot water separate and allows the hot water to be supplied at mains pressure. Not sure if they are used anymore.