Old system playing up

[Dan hart]

turn the power off

move the yellow wire to no 1 terminal (eg red and yellow together)

heating should start

Yep, spot on! Gutted I bought a new valve now!

Is mine deemed a three wire thermostat even though I have 4 (earth)

 

[Dan hart]

Stat broken.

Power off, put yellow onto red terminal, with red still on there, Power back. You will have linked out the stat till you get a new one.

Thank you, a nice cheap part too!

Thanks for your help

 

[ShaunCorbs]

Yes Honeywell 6360b should sort you out

 

[Dan hart]

Shaun is steeling my Thunder !

No, no, I’m sure we play fair in here!

I really appreciate the help, thank you!

The netaheat lives still!

 

[Last Plumber]

Thank you, a nice cheap part too!

Thanks for your help

You're welcome. Get a 240V Room stat. There are different types on the market.

 

[Last Plumber]

That one Shaun mentioned is good. Get one of them!

 

[ShaunCorbs]

red in 1
yellow in 3
blue in 2
earth in eath

 

[Last Plumber]

red in 1
yellow in 3
blue in 2
earth in eath

Eath?
What's Eath Shaun lol

 

[Dan hart]

That one Shaun mentioned is good. Get one of them!

As I know that the rads used to heat a bit when the hot water was on (only hot water) I may still swap out the full valve and fully drain the system,, any inhibitors that you would recommend for my system & netaheat boilers?

Also, the water going into the expansion tank, if this continues after the thermostat change is there anything that this screams out as, as a fault?

 

[Dan hart]

red in 1
yellow in 3
blue in 2
earth in eath

Thanks Shaun

 

[Last Plumber]

As I know that the rads used to heat a bit when the hot water was on (only hot water) I may still swap out the full valve and fully drain the system,, any inhibitors that you would recommend for my system & netaheat boilers?

Also, the water going into the expansion tank, if this continues after the thermostat change is there anything that this screams out as, as a fault?

What's the Heat exchanger made from?
If it's anything other than Aluminium I'd use Fernox.

As far as the Tank goes, check the level first. When it's cold it should have 4 or 5 " of water in it.

 

[Last Plumber]

How old is this neataheat?
I remember one potterton did years back but there can;t be any of those left alive now!

 

[Dan hart]

What's the Heat exchanger made from?
If it's anything other than Aluminium I'd use Fernox.

As far as the Tank goes, check the level first. When it's cold it should have 4 or 5 " of water in it.

Blimey, I’m not sure what it’s made of - I will try and find a model number and look it up.

The expansion tank ball cock works, it doesn’t look like any of th hot water goes into the overflow, it’s like it is taking the water it’s displacing

 

[Last Plumber]

What speed is the pump on?

 

[Dan hart]

How old is this neataheat?
I remember one potterton did years back but there can;t be any of those left alive now!

It’s alive!!

When I had a gas pipe removed last year they sniffer tested it and it’s emmisions were better than most combi’s apparently

 

[ShaunCorbs]

They normally are just the permanent pilot and getting hold of spare parts that let old boilers down

 

[Last Plumber]

Fernox F1 Inhibitor

 

[Last Plumber]

That Boiler is the later version of the one I was thinking of. Pretty much the same thing, just the Gas controls that are a lot more modern on yours. The original Neataheat had all sorts on it.
Proper little gas chain. Automatic pilot too with a mercury vapour valve.

 

[ShaunCorbs]

whats with the slap here message

 

[Dan hart]

It was on 3, I have turned it down to 1

 

[Dan hart]

whats with the slap here message

Well..... you know some people believe that you can fix things with a good slap....... when the boiler was playing up the pilot had gone out and wouldn’t fire up, my neighbour who has the same boiler had said something about a sticky valve, that is the area that you have to slap it apparently!

 

[Last Plumber]

They normally are just the permanent pilot and getting hold of spare parts that let old boilers down

Auto pilot on these Shaun. The earlier model had one also. It worked in a similar way to how a Gas oven works. They had a Mercury vapour valve with a Phial over the pilot. Once it warmed up the Mercury would expand and open the Valve. There were separate solenoids and regulators on those too.
I'm reminiscing now !!
They were a nightmare lol!

 

[Dan hart]

Fernox F1 Inhibitor

Thank you, what about cleaning or is a flush through with fresh water a couple of times normally enough?

 

[ShaunCorbs]

Auto pilot on these Shaun. The earlier model had one also. It worked in a similar way to how a Gas oven works. They had a Mercury vapour valve with a Phial over the pilot. Once it warmed up the Mercury would expand and open the Valve. There were separate solenoids and regulators on those too.
I'm reminiscing now !!
They were a nightmare lol!

Was thinking about an old gloworm space saver

 

[Last Plumber]

Was thinking about an old gloworm space saver

Ah!
Another amazing invention.
They would all outlast any modern effort!

 

[Last Plumber]

Thank you, what about cleaning or is a flush through with fresh water a couple of times normally enough?

I would put F3 Cleaner in, leave it a few weeks, Get it hot and empty it. Then refill, dose with F1 and Balance !

I would do this after the pumping over the vent pipe has been dealt with though otherwise, you'll be wasting your efforts.

 

[ShaunCorbs]

Ah!
Another amazing invention.
They would all outlast any modern effort!

Yep had one had to get rid flue was smelling a bit

Even had the upgraded cast hex, it's in the local tech collage now

 

[Last Plumber]

Yep had one had to get rid flue was smelling a bit

Even had the upgraded cast hex, it's in the local tech collage now

See....it lives on...even wounded!
Warriors !!

 

[Ric2013]

From the instruction manual, the heat exchanger looks to be cast iron. Certainly the Potterton Netaheat Profile, later renamed simply 'Profile' has a cast-iron heat exchanger.

Re water pouring into your cistern, you mean the hot water comes out of the vent pipe over the top of your feed and expansion system and runs into the cistern? A run or a dribble? Does this continue to dribble when the system is good and hot and has been running for some time?