[dazmond]

It's actually upside down my mixer valve compared to pic on the website

[dazmond]

🤔

[DJW]

Don’t Grippa keep spares?

[Smudger]

Don’t Grippa keep spares?

🤣🤣🤣🤣🤣🤣🤣🤪🤪

Best joke of the year !

[Splash & dash]

Don’t Grippa keep spares?

Best going else ware if you can

[dazmond]

Do any of you diesel heater users ever change the antifreeze in your header tank?

Mines pretty dirty and gunky now....I think I'll empty mine and refill it with some fresh anti freeze...

[dazmond]

I've got a wet and dry vac so I think I'll just suck all the anti freeze out of the header tank and refill with fresh.

The anti freeze is pink.can I just put any antifreeze in or is it best just to put the pink stuff in?

[dazmond]

Don’t Grippa keep spares?

Yeah they probably do but they'll charge me at least £30 or £40 more for the same part and I'll be  waiting weeks for delivery

I've already got the new mixer valve in less than 24 hours from ordering!

[DJW]

Don’t mix antifreeze colours.

[Splash & dash]

Do any of you diesel heater users ever change the antifreeze in your header tank?

Mines pretty dirty and gunky now....I think I'll empty mine and refill it with some fresh anti freeze...

Yes I change ours every three years it’s a 50-50  long life anti freeze mix

[Splash & dash]

I've got a wet and dry vac so I think I'll just suck all the anti freeze out of the header tank and refill with fresh.

The anti freeze is pink.can I just put any antifreeze in or is it best just to put the pink stuff in?

I was told to use the long life red antifreeze at 50-50 mix

[dazmond]

I've never changed the antifreeze before.its 6 years old!😄👍

[dazmond]

Just ordered 10L of mannol G12 antifreeze.do I just mix it 50/50 with water and pour it in just over half way in the header tank?obviously I won't need 10L but it's good to have some spare...

[Splash & dash]

Just ordered 10L of mannol G12 antifreeze.do I just mix it 50/50 with water and pour it in just over half way in the header tank?obviously I won't need 10L but it's good to have some spare...

Yes ,i  fill mine to between 1/2 and 3/4 of the tank

[Spruce]

🤔

You put the new one back the exact same way as you took the faulty one off.
If you look carefully, you will see the there are flow arrows on the mixer valve.
You know the cold water inlet is opposite the k nob.
If you look at the couplers nearly opposite each other, you will again see the arrows showing the direction of flow.
The fitting with the olive and nut is the side that threads into the heat exchanger.

If you are unsure, then start the heater and the run your wfp pump. You will quickly be able to feel the hot water inlet and the cooler outlet at the top that will eventually get hot water to your brush head.

[dazmond]

Looks pretty straightforward to be fair.

I think I'll sort it(and the antifreeze)in between Xmas and New year.im having 11 days off and itll be a nice diversion from the Xmas food and celebrations!

I think I'll check all the wiring and
tighten up any fittings too.

Should I leave the locktite to cure for a few days before firing up the heater Spruce?

[Spruce]

Looks pretty straightforward to be fair.

I think I'll sort it(and the antifreeze)in between Xmas and New year.im having 11 days off and itll be a nice diversion from the Xmas food and celebrations!

I think I'll check all the wiring and
tighten up any fittings too.

Should I leave the locktite to cure for a few days before firing up the heater Spruce?

24 hours should be fine. I would then start the heater and get the internal circuit's heat to around 50 degrees and leave it for another 24 hours. Don't use the wfp pump at all during this time.
That should have cured for long enough during the cold weather to use it.

Then test the heater and mixer valve for leaks under pressure.

Smear the loctite onto the threads of male connectors only. When screwing the components together, the excess loctite will be outside and easily wiped off. If you put loctite on the female threads for example, the excess will end up inside the mixer valve or heat exchanger. You don't want that.

It reminds me of cement. You mix it first and it's sloppy. In a few hours the chemical reaction starts and the concrete begins to get hard. The water does start to evaporate from the mixture, but if we keep the concrete wet, it takes 28 days for it to reach full strength.

https://www.henkel-adhesives.com/uk/en/product/thread-sealants/loctite_5720.html

[dazmond]

Thanks Spruce.ive ordered that exact bottle(50ml).it's fairly pricey stuff(£33) but hopefully will do the trick.im just hoping the old fittings will unscrew without any problems as there's quite a bit of gunk around the top of the threads....

[dazmond]

This came out of  the inside of my black mixer valve along with the spring and plastic plunger.i just screwed the black k nob back on today without these components inside thinking it would raise the temperature of the heater but to no avail!

My heater now seems to be on a low setting so only getting luke warm water with hose out(40c coiled hose on the reel instead of 65c-70c)....

I've put these components back into the valve hole but water still just warm instead of hot🔥

It makes no difference whether these are inside or not🤷‍♂️

[Spruce]

This came out of  the inside of my black mixer valve along with the spring and plastic plunger.i just screwed the black k nob back on today without these components inside thinking it would raise the temperature of the heater but to no avail!

My heater now seems to be on a low setting so only getting luke warm water with hose out(40c coiled hose on the reel instead of 65c-70c)....

I've put these components back into the valve hole but water still just warm instead of hot🔥

It makes no difference whether these are inside or not🤷‍♂️

You need to 'block' the cold water hose going to the mixer valve. You will then divert all the cold water through the heat exchanger. I wouldn't even bother, tbh.

Yes, this locktite is expensive, but there is no variant of locktite that isn't.  It's the king (or 3M) of thread lockers and sealants.

I've tried to use blue thread locker before as a thread sealer. It didn't work. Neither did a thread sealer plumbers use. I phoned Purefreedom, and they told me about 572 as the only stuff they found to work, long term. Mine as been running 5 years now and no leaks.