HOW TO GET INSTANT HOT WATER FROM A COMBI BOILER - Navicirc review

[@oldblokeswhoshouldknowbett8108]

been fitting the Navien oil boiler for a couple of years now after nearly dying taking a grant combi up a set of stairs on my own, brilliant kit, fitted my first NCB700 yesterday, also brilliant bit of kit

[@mrserviceman8795]

Navien yeah seen lots about them from American installer Mikey pipes Have problems with leaking products of combustion inside boiler from new But they as all manufactures will not accept liability You need to watch his KZbin channel eye opener

[@IWANASLAPTHAT]

Sorry bud, just see your comment and I too watch Mikey pipes and I wrote pretty much the same as you.

[@matttate9155]

You should watch ‘Mikey Pipes’ KZbin videos on Navien boilers. Cheaply made in Korea. Combustion burner seal usually leaks straight out of the box. Plastic sump turns to an oily gunk after only a couple of years. Popular in the USA though. Let the ‘mercan’s keep em!

[@jmb69er]

I was just designing a system using Combi Boiler with a 90Litre unvented indirect cylinder so I can have a secondary return using a Combi boiler... best of both worlds constant hot water and instant hot water... doing research and not finding anyone who has done this but I don't see why not... I came across this video... this might be the better option!!

[@PaulRM329]

At 16:10 Josh makes reference to "barrel pipe" as unsuited to a secondary return. I'm not sure what this reference means and would appreciate a heads-up on it.

[@joshtappin3269]

What I mean by barrel pipe - is that some plastic pipe comes with a single layer but barrel pipe has two layers. Because secondary return pipes are continuously hot the non barrel pipe starts to disintegrate.

[@Muggles87]

@@joshtappin3269 I think you mean barrier pipe.

[@pip5461]

I'm not a plumber and easily confused... The "Navicirc valve" is external to the boiler and re-directs the heated water back towards the input to the boiler... As it's fed back to the boiler input, what gives it priority over the mains water coming in...? Plus, couldn't you just plumb the "Navicirc valve" or something similar into any combi setup...

[@ScottyDog345]

Leave alone

[@WeAreTheTrueMedia]

I've just recently had a Navien 'blue flame' oil combi installed. I'd never heard of the company before but they're huge in the states. I'm now curious if my one has this hot water feature but I'm sure the fitters would have told me.

[@gruhwch4876]

There isn’t a second pump in an LCB700

[@pallsmortion4750]

Wouldn't you need to fit a check valve before the boiler feed to stop back flow ect?

[@seankeleher5279]

Yes you do, it is just left of the mini expansion vessel on the mains supply from the left (hard to see on the video).

[@Gee0123..]

Have they gone bump? The link to website is no longer there.

[@MrDbone75]

A very good Saturday morning to you all from Wellington Somerset

[@S.Trades]

What's the warranty on this boiler?

[@brendanfisher2528]

On the navien channel. It says just connect hot and cold to the recurculation valve. (Check it out) would this not cause legonaires issues? As it would be warming the cold drinking water

[@S.Trades]

Wouldn't you be taking the cold drinking water off before it reaches the boiler? Not necessarily, no, but you could do?

[@anthonybowers1126]

You haven't mentioned the central heating ?

[@andywoollard2343]

where can I get Navien NCB500 Gas Condensing Combi Boiler 37kW, 41kW Chessington Surrey KT9 2ND

[@ultrasteve9031]

Can you do a vid on Navien oil boilers please? Cheers

[@thomascoyne157]

What would be the cost too install 👍👍

[@Muggles87]

People acting like a secondary return on a combi is a new and innovative thing 🤣 been doing this for years, standard bronze pump and motion sensors in the bathrooms & kitchen, pipe stat on the return to knock it off once the return is warm. Looks like a good boiler though, OpenTherm and 15:1 modulation. Going to need a huge gas supply though!

[@jeffg1961]

Interested to know what oil boilers you recommend?

[@WeAreTheTrueMedia]

I've recently had a Navien oil boiler fitted. It's an LCB700 blue flame combi and we're very impressed with it. Has many features that you won't get on a Worcester for example.

[@ebebop]

Not Worcester for sure. I fit grants, mostly bullet prove as long as it’s looked after.

[@gruhwch4876]

@@ebebop Grant warranty isn’t worth the paper it is printed on. Would you swap a 36/46 Grant out (1 yr old) for £200. That’s what they offered me (original 36/46 a year old, manufacturer defect). Worcester give a longer warranty and more importantly, back it up unquestioningly with people on the ground. We also fit Navien oil and gas, have mixed views on these.

[@Muggles87]

Navien for combi, Hounsfield or EOGB Sapphire for everything else

[@Traumahawk007]

Interesting but a bit of a gimmick IMHO you still need a decent flow rate to run several showers at once much better off having flue recovery system, liking the Intergas boilers which have this with simpler design.

[@broker72]

so am corrrect in saying the boiler just keeps a loop of semi hot water available until you want it, not sure its a great idea if so

[@Roastbeef01]

I'm thinking that also.

[@matthewwatkins1854]

What is your favourite oil boiler sir?

[@plumberparts]

I love Grant oil boilers.

[@dazl7954]

2:19 side view, seal looks poor. offset pipe connections, not a good idea for installation (jig better option). Navicirc not ideal for many installations in the UK, where there are more than one circuit, its only ideal if installed like the demo image you put up, so its extra pipework to install, extra gas, extra time to install, initial more cost to the customer, possible faults in future, also seen many USA videos about the boiler make, and not that good really, various different faults. did you not want to tear it down?? (3 showers at once - what flow rate on each??, as most UK properties are an average of 17 L/min, that will not do 3 showers) i would not buy one. Tear down vid next?

[@D_pawson]

Whats m3/hour rating for the 54kw model?

[@ebebop]

Do you calculation about 4.98 however it would probably peek at 56-58kw

[@D_pawson]

@@ebebop that seems a bit short. A Worcester bosch greenspring 47kw is 6.03m3/h

[@ebebop]

@@D_pawson that’s 65kw

[@plumbertime]

Exactly think commercial gas for a start I’d say!

[@markrainford1219]

@@D_pawson Your confusing input and output.

[@setdetnet5001]

So this isn't how to get hot water from a combi. This is HOW TO BUY A NEW BOILER FROM NAVICIRC

[@tigerick7291]

Barrel pipe? Do you mean barrier pipe?

[@stevel5504]

Looks ok apart from the fact that any old numpty can remove the casing without any tools. Also the front casing seal doesn’t look great on the side shot just after you take it out the box 😮

[@jameskennedy7295]

balanced flue?

[@SpecialBeaterService]

It’s a fan assisted balanced flue. Back to college for you.

[@graememclaughlin720]

@@SpecialBeaterService balanced flue not a flue without a fan? Same pressure both sides?

[@graememclaughlin720]

@@SpecialBeaterService fan assisted imbalanced flue 😂

[@chrisf5475]

How can I send you a little video? (Plumbing related… don’t get too excited 😂)

[@johnlittler4201]

There is actually a Nuaire fan model called “Dave”

[@shavenhaven6869]

Try getting parts for them when they go wrong . Good luck !

[@brendanfisher2528]

As far as I'm aware (heard from navien rep) navien pay the installer or local engineers a fixed price to repair them and send out the parts to site..

[@YoutubeHero666]

@@brendanfisher2528 I heard they have just been swapping the boiler than repairing them!

[@PhillipParr]

"We're not allowed to tell you that sort of thing" - a bit like modern cars have no consumer full workshop manual. I do wonder what's safer: letting someone who's going to have a go anyway do it blind, or potentially encouraging people by giving them instructions? 🤔

[@dimitar4y]

it's called the destruction of freedom. the subscribtion based life. The liberal new world order. YOu will rent everything, and you will own nothing, AND YOU WILL BE HAPPY.

[@IWANASLAPTHAT]

WHAT? Do you have children? If so do they sit in your car? You have a license one would think yeah? Do you blind fold them or not talk to them about how a car works or how to drive it.

[@dimitar4y]

@@IWANASLAPTHAT parents? telling children how anything works? In 2022? PFFFT. Parents shove head in smartphones like ostriches.

[@PhillipParr]

@@IWANASLAPTHAT there's quite a lot of difference between how a car works and diagnosing and fixing error 27A9

[@paradoxdea]

Looks like this boiler works on a cogenerating principle.

[@ebebop]

Been doing this for years in commercial

[@gruhwch4876]

The secondary return accessory has been available for decades in the USA. Across all boilers, even Walmart sell them. Legionella concerns in the UK prevent the cold water supply being exploited for a hw return. Consequently Navien need a hw return separately run in the UK. Which leaves the secondary return pump controlled by the boiler the only new thing here. This is not quite the same as the secondary return on larger domestic/commercial because it is a combi with no significant water storage.

[@technicallybetter]

The whole point of the NaviCirc is to be able to have recirculation without having a dedicated return. Instead, the NaviCirc will use the cold water feed to function as the return. This video sorta confuses and negates the whole point.

[@MrRawMonkey]

They leak out the box.

[@JoeGoodgame-k7j]

@4:56 hehe

[@markrainford1219]

Another nail in the coffin for British manufacturing.

[@dimitar4y]

all those features and it's just a grand? Wow. Smartphones cost more nowadays!

[@richard4788]

For me I’d put that under my bin lid…!

[@Littleginner1976]

Mikey pipes killed this boiler because it's 🐕💩🤣🤣🤣🤣🤣

[@tomearnshaw8532]

You need to do some homework on navien. There crap.

[@tozzer9440]

This video is very misleading, alot of incorrect information.

[@anthonygreenwood4486]

Looks like an alpha, Junk

[@unknownuser3479]

Rubbish boiler don’t buy