Firstly I'm amazed how you people on TH-cam produce such professional videos with the equipment you have. If it was a TV production company it would be a half million pound job..the thing that interests me most about these heater is the efficiency of them.. excellent videos David..
The reason why tv productions are so expensive is everyone has to get a slice, then there's various unions involved. Here you have one guy that has to answer to no one, so he does the best job he can!
I know this is an old video now, but I just wanted to point out that if you go into the settings on the FLIR, you can change the "Emisivity" setting from "matte" to either "semi-matte", "semi-glossy" or "glossy", athough glossy is quite inaccurate and not recommended. Changing this setting would enable you to give more accurate readings on the various surfaces you showed us. I can't believe I've only just discovered your videos. Your absolute no nonsense approach and straight talking is a breath of fresh air. My family originate from lincolnshire, so I've had a north-ish upbringing but live down south where most people sugar coat everything and wrap it in cotton wool. I wish everyone just cut the cra and got straight to the point like you do 😁
Absolutely fantastic. Well presented, informative while remaining humorous throughout. I am a engineer and have been for 35 years, I've seen technology change but seeing it through someone else's eyes who is clearly passionate with basic garage tinkering as I am is just brilliant. The EGR heat recovery has to feature with this at some point, maybe even connected to a calorfier or insulated storage tank. For the record, the Eberspacher D5W doesnt have a great deal of heatsink fins either. Keep up the good work and glad you've maintained your signature "Well Hello"
These experiments and teardowns are as educational as they are appreciated! I would like to buy one of these water heating models for use as a backup heat source, that can also purposefully heat water. Multifunctional devices are great survival tools!
Loving the videos pal!!! One thing I’d like to see is it actually connected up to a vehicle and see how long it takes “real world” to heat the coolant and how hot it does get. Thanks buddy , chaps like you are what the internet needs more of!!
A great test. I'm preparing myself to buy one of these heaters. Disassembling it at the end of the test was a great idea. It shows how simple construction it is.
Bought the same heater 2 years ago and been using it in my trailer camper. It's been great, no problem so far. The shipped water pump is not pressure activated, so got a replacement with a separate switch (the original pump still needs to be connected eletronically, else you'll get a error message). The fuel pump stopped working when near freezing temperatures, but that went away with winterized diesel. The heater is surprisingly fuel-efficient. I've been heating water directly with it. Was worried about hard-water build up, but so far no drop in water flow/pressure detected.
Hi David, another great review, all I would like to see is a flow rate of 2 litre per minute going through the unit at tap temp and then see what the rise is on full power , no recirculating involved PLEASE , PRETTY PLEASE !!
I was really pleased to see this as I have one of these I brought from Aliexpress about 6 months ago. I run a glycol mix through the heat exchanger on a hot water tank and I have an open circuit with an overflow bottle. Turned out to be really complicated with different size fitting on the pump, heater and water tank. It is now working well and will heat 20 litres of water up to shower temperature in about 30mins (on low) Mine has a much more basic controller with a separate water pump but the heater is the same brand. I have not worked out how to exhaust hot air out of the van in the Sumner when I don't need it. It is definitely the cheapest way of diesel air/water heating.
I was wondering about that - not ideal on a hot day if you just want a shower. I think i'll go with an ex-car Webasto and use a heat exchanger for warm air.
@@jonasstahl9826 I would wonder if that might trip the overheat protection that monitors the air temperature of the air going over the heat exchanger. I did not have room to do this but my initial idea had been to simply move the hose to an external exit in the summer and an internal one during the winter. I have decided that the best way to use this is to treat it as a cheap diesel water heater and view the hot air as a waste product!.......removes so many problems.
I'm wondering if it can be run in a closed loop system and if it has any safety features like over temp and over pressure shut down, I'm thinking a Chinesium version doesn't.
@@rotattor Basically like a semi trucks with diesel apu heaters. Heats water to heat the trucks water system, which the trucks heater system then blows into the cab to heat it up. IF it is not ran thru the trucks cooling system with a pop-off for pressure, Might have to make a reservoir with a cap for returning water to go into, that the heater water pump would pull water from to run thru the heater. That would deal with pressure & a water thermostat valve to redirect water reservoir once the loop is at a certain set temp.
@@Weirdracin so basically the diesel heater just ties in to the vehicle engines coolant system via a thermal transfer radiator unit ( I forgot the proper name for it LOL! ). So the coolant system uses the reservoir for thermal expansion in a semi closed loop system ?
@@rotattor Ya, Usually ties into the hose to the heater core, but the vehicles cooling system would be part of the system for water expansion with also the radiator cap for pressure pop-off, should it get too high. They sometimes have a thermocontrols bypass valve system, to cut the flow partly to the engine, so most of the hot water is mainly circulated between the diesel heater & the heater core to heat the cab, with some going into the engine to help warm it also, when the heater core is at the proper heat requirement.
Thanks for doing the vid David. When I saw the current draw when the heater was running, and the heater plug should have been off, I was convinced there was an electric element to heat the water! Just looked this up on the link you provided and they are featuring this vid to demonstrate the product, hope you got a payment :)
yes, which means you have a warm engine to start easy & also if needed use the trucks heating system to add more heat in other areas the unit is not in., thou you would be using that heating systems fan units, which will draw more power.
It'd be very interesting to see how much heat output you get from the "air" side of the heater when the heat exchanger is fully utilized to heat water. I suppose the best way to test this would be to run a constant supply of cold water (i.e. a garden hose) through the heat exchanger, and see how much the output drops. I think a lot of people are worried that the heater might produce too much unwanted heat for it to be useful for heating water in the summer.
I don't think that is it's intended use. More for heating engine coolant or heating a tank of water, perhaps underfloor heating. I'd go for a pure diesel water heater if you want to heat water only, I've got a used eBay one en route for a bit of play with.
@David McLuckie I know the intended application isn't for "on demand" hot water. That's not what I'm suggesting. Whether you're heating a car's cooling system or a tank of water, the water will be cold to begin with, and will gradually heat up as it gets circulated through the heat exchanger. I think it would be interesting to see how much heat the cold water "steals" from the air heater. Obviously as the water in the system warms up, it won't be "stealing" as much heat as when it was cold. I just suggested using a garden hose for the test because it would provide a constant supply of cold water to make things a little more consistent. A large bucket of water would also work.
Wonder if it may me more efficient as a water heater if the air fan was removed? (Or does the external fan have the sense magnest in?) And 2yrs later, these never did come up cheap from china.
Wine and aluminum aren't going to play well together. You could absolutely use it to heat a working fluid and then use a food-grade heat exchanger or stainless steel coil to heat your wine. Seems like a lot of steps when just throwing the wine in a big pot on a burner will do the same thing.
Thanks for buying one for us and testing. Once I've a garage of my own I hope to get underfloor heating installed, this would be sweet for that. My suggestion would be to do both your egr on the exhaust, in series with the water heat exchanger, to see if it would speed up the heating of X liters of water. See how much energy you can capture instead of letting it go as waste heat out the exhaust unused.
I was planning to buy the "air only" version of this and putting a car HVAC heat exchanger inline with the hot air output. Circulate coolant through the exchanger and the boiler (normally engine coolant driven). If this comes down in price, it will be way easier... But the balance between air heating and water heating seems to be much more in the air heating favor, so, will wait for more tests...
For underfloor domestic heating you'd be far better off going with a conventional hot water heater and pump. Natural gas is significantly cheaper than diesel fuel per BTU. Depends on your local rates, but electricity may even be cheaper per BTU than diesel.
Really loved the unit dismantling part in the footage!I think this should be the only choice for me to avoid lpg onboard and to create an easier to maintain system.In Italy there's no way to do a legal diy van conversion unless you build everything removable inside without screws too.Just crazy!So I'm living the nightmare to design a stealth mode based van, with independent energy/water/heat sources out of the frame with quick release connections on every module inside the vehicle.This unit will serve well the kitchen output as the shower too.Thank You!
@@doneown503 That's right, this is because in the absence of type approval, the van remains a vehicle for transporting cargo and none of it has to be permanently anchored. Any cargo can be restrained with straps or quick-release systems, but not firmly attached to the chassis.Look up Vancubic to get an idea of the crazy work of these guys who solved the problem.
Same here, I was going to buy just the normal diesel heater for my caravan, while being annoyed that I still have to use gas for hot water, but then I saw that David was getting a water heater version. So now i'm wanting one of these, if it's any good (15mins in).
@@Pieh0 I don't think it is ready for main stream. Why put the water heater system only on the bottom and not all around? They could have redesigned the body to have water chambers all around the flame part. Then again, it is only meant to keep your car/vehicle warm by circulating coolant through your engine. I want to use mine to heat a shop. So heater on bottom of assembly, to me, it's a deal-breaker. ☺
@@danyf3116 Maybe the water would start boiling the heat exchanger was covering the lot, or it took too much heat away from the air. In any case, it seems to do both reasonable well.
@@Pieh0 I'm sure it works well for what it is intended to work for. However, we all know who comes here. No truckers wanting to find out how to hook it up, I'd say 90% are DIY'ers like you and I and David. What I want to do with it is WAY beyond what it was meant to do, I'm sure. A bit like a PC fan trying to push his CPU as far as he can. This is the same for me. How can I suck as much heat as it can produce for what I want it to do? ☺
those asking about instant hot water for camper use, could be set up how my webasto is with a closed loop via a plate to plate heat exchanger, which works really well on that???
After wandering in here by accident I hung around long enough for the full review & test. Not relevant in my life at all but strangely interesting to watch.
I'd like to see what the hot water could actually be used for? A radiator, underfloor heating or could it be used for a shower or sinks in a camper van?
Good question. A lot of Diesel Heater owners have RV's of some type and predominantly use them for heating ambient air space. Perhaps 70% of those same RV's also have a hot water systems so is this new design about to replace water heaters (eg: 50-100+ litres) or to preheat water tanks? Preheating or 'warming' of water lines (assuming a flow through pipes) would also be very advantageous in alpine or sub-zero environments where water pipes freeze. Practically, this means that you can wait longer in the day to have a shower, knowing that the water pipes have not frozen over.
Don't forget to add Diesel Fuel Conditioner to the diesel fuel in the winter. Diesel Fuel Gels like Jell-o when it's below freezing without the Diesel Fuel Additive. Howe's is a good brand.
SUGGESTION - Do you think you could minimize the dependence on an external battery by rigging it with a set of Thermoelectric Generators (TEG)? That way it only needs the vehicle battery to get started, but generates enough power from the TEG to keep the fan motor and pump going...???
Hi David I saw a van build video recently with wet underfloor heating. Could it be set up to provide: Blown hot air, zig zag piped underfloor heating and a hot water header tank to wash the prosecco glasses. Cheers Johnnie
I was curious, I’m from the USA, what are the chances of using the hot air and a baseboard heater simultaneously? I was thinking the hot air is obviously faster but baseboard heat, with glycol not water, would be a nice supplement since it’s a much more even heat. What would I need to do to be able to flow antifreeze through a baseboard heat section or two. Figure 3/4 in diameter and 8 or 16 feet long.
Water heating side of this was mainly used to raise the temperature of the engine coolant so as not to start from cold and to stop overnight freezing of the engine in very cold climates.
If it's a self contained system, yes, but in my plan, i'm wanting to replace the Carver Cascade gas/electric water heater in my caravan with something like this diesel heater, and as that water is used in the sink/shower, that's going to be a problem :).
@@Pieh0 This diesel heater would do dhw but only with a indirect store. i'm guessing the carver uses gas & the immersion for quicker heat up times for the stored hot water ?
Hello David. Don't know if you have "ice fishing" anywhere in the UK. I don't particularly like fishing but ice fishing, in a fish hut not in the open, is excellent, and best overnight. You use a small shack (ours is 5' x 8') with a hole through the floor (and ice), insulate it and put in a stove/heater so it can be sauna like inside while a minus 15c blizzard might be raging all around. Good and safe heaters for huts are hard to find. The diesel heater might be perfect since it seems to vent properly. One of the best things is to be able to cook tea or coffee on the stove, and if lucky enough, also cook some fresh catch with some other ingredients. Everyone always insists that it is the best fish they've ever had. So... while the diesel heater is set up to warm the hut might the exhaust pipe be hot enough to loop it into an enclosure with a flat surface on it that could be used as an element to cook over before being vented outside? The enclosure could be engineered to direct as much heat as possible to the top surface. Ours is a small oil stove that is very good to cook on but is not fully sealed and is a constant safety concern. How about a demo of cooking bacon and eggs in some way? Dan
Nice one, I would like to see how this heater copes with heating a large body of water like a fish pond, as that is what I would like to do during winter
@@DavidMcLuckie Yes obviously would take a while to get desired temp but once there temp just needs stabilising and yes would like hot air too, I think the exhaust method would be better for what I require
Webasto has been offering water heating units since at least the late 80's ..I maintained a fleet of rural school busses here in Alaska that were eguiped with them as engine preheaters.
@@greywuuf more amazing to me is that they do still sell the exact same model of water heater that i have working in my 1986 auwärter bus. they must have nailed it then and did not find a reason to discontinue them in over 30 years.
@@dauerwerbesendung7045 not sure "nailed it" is exactly correct.....the ones I have been around in extreme cold will often "fog" the fuel without igniting it ....causeing heavy smoke to leave the pipe ....occasionally when it is really cold and you really need it .....they will "light" external to the pipe .....and just act as a blow torch ......circulating cold water ... Depleting you battery and leaving you in a bad way .... Just saying they are not perfect but the can help.
Yeah, but put in a valve and a bypass for when you don’t need to heat your engine. If I was camping for days or weeks somewhere I’d rather heat shower water.
First time viewer, and now a subscriber. You're a twin of my fav, Mustie1 except one of you has a funny accent. Great job, well produced and very entertaining. I'll be ̶s̶t̶a̶l̶k̶i̶n̶g̶ um, following you...
Hey David great video. I would like to install one of these on my campervan. My questions: 1) it looks like the hot water pipe will have to go on the outside of the vehicle, unless u have another suggested way to install? 2) so for a camper, this is not going to be instant hot water on demand but need a hot water tank storage?
Like the intake and exhaust the water pipes would need to be outside. The only alternative I can think of is building a box to raise it off the floor. Either storing of hot water, or attached to the vehicle coolant system to heat the engine.
It definitely isn't designed for heating water for camper use, it's only purpose is to heat coolant water so engines are not operating from cold in frozen climates. In Canada they fit cars with electric sump heaters, this heater does that job, a lot better, and also heats the interior of a vehicle so it doesn't need de-icing before driving. This is its intended purpose, to attemp to use it for camper water heater would invalidate any warranty and would undoubtedly need considerable modifications with a water tank fitted with a heat exchanger coil.
Thank you all for your help, you can tell we are not very knowledgeable in this aspect. LOL .... back to the drawing board. David, your videos are awesome! cheers
Perhaps the glow plug measure of AU is Chinglish for AV, which would be the Amps x Volts = watts. Watch the movement of the power supply amps when glow plug turns on, and multiply by 12 or whatever voltage is being drawn. Maybe close enough for CE standards.
Do you think this would work in a water fed pole window cleaning van setup to provide hot pure water? Setup would be tank of pure, 100psi 6lpm shurflo pump, water heater then 100m 6mm microbore hose to brush head with univalve (on/off flow control) or would it best to have heater between tank and shurflo pump? Max lpm at brush head is 3lpm would the heater provide that level of hot flow? And would it need turning off between jobs to stop the water boiling or would the cessation of water flow cut the heater or would it need recirculating back the the tank? Many thanks for any answers!
In short, no. That particular heater is only good for about 500w of liquid heating power. I've got a few videos where we made a diesel water heater into an 'instant' shower, which would be similar to what you are after. I've seen a few water fed pole heater builds and a few have commented on here. Have you thought about a gas boiler type? Something like this - www.amazon.co.uk/Camplux-Outdoor-Portable-Tankless-Regulator/dp/B07H2ZMCNL - other cheaper chinese versions are available. :)
Great it's finally arrived! Thanks for the review! Is this the "5-10" kW version (larger) or the smaller version( 5kW max) as you've found with the hot air version? Can you do a video showing the thermal power split?? Thanks again. Great to see technical breakdowns!!
@@DavidMcLuckie You mean the same size which is a 5 kW but marketed as 2,3,5 or 8kW, not the small "true 2kW" version. trustdog seams to be misinformed about heater sizes
@Erik_DK - Actually, he did show (in a recent video) there are two sizes of heaters... basically a 2-5kw & 5-8kw, give or take a kw. The housing dimension (between the two kw versions) is considerably different but I do see your point how some manufacturers are marketing the larger units as 2, 3, 5, 8 kw, which makes it a bit tricky for those needing the dimensionaly smaller 2kw unit to mount in smaller tighter places.
Great video! Anyone happen to know if the display features a clock and programmable timer and/or if the display controller can be swapped out for a display that features a clock w/a programmable timer?
Thank you! Did you find one of these split water/air versions in the smaller size? Thanks again for you technical breakdowns, it's realy apriciated! :)
I wonder of you could plumb it into a back boiler style hot water tank, and run a glycol through the loop from the heater to avoid corrosion of the chinesuminum 🤔
Yep I would think that would be essential or the aluminium would not last particularly considering the non potable water many will use while travelling if say just using the water heater for general washing/showering. I would use a stainless steel heat exchanger will glycol coolant running through the heater but of course you need to consider the correct implementation to ensure the primary water heating circuit is not over pressurised.
I'm putting one on the boat with a diversion valve so I can send hot water to the hot water tank heat exchanger or main engine block...... the main engine is 850 kg of cast iron and boy does it love a little block heating action on a cold winters day..... really cuts down on the wear and tear on a cold start..... I've run two Chinese 5kw air heaters, one lasted +/- 8000 hours, the other threw a bearing and seized at 1500hrs, luckily at the end of winter. Greetings from New Zealand......
I would have to say the AU on the glow plug may just be the Amp's the Glow plug is pulling. When you started the shut down you can see the AU @ 8 and the Amp's on the meter around 8.5amps. Another great video, I would really like to see this thing on a car/truck, working to see just how "Hot" it can keep an engine in the cold.
3 questions 1 should it came with some flapper during the summer when you just need hot water but not hot air. 2 was it able to add some components to make heated floor loop. 3 what's the differences between this and the one have the water tank that can preserved some gallon of hot water
Another great video David! I'd be interested to know if the water pump with it is drawing some of that 5 amps as it was running dry- although I'd hope not!! Also if/when you get it plumbed up correctly, does the on board water pump have a delayed start or anything like that? as pumping theoretically 'cold' water through an otherwise hot heat exchanger could have detrimental effect on the heat exchanger/ casing leading to sealing issues.- Probably why those screws were so tight! Solid fuel boilers for example have back end protection valves to ensure the returning water is at a set temperature- a car thermostat works in much the same way.. just a thought! Keep up the good work!
the water out let is designed to go to a coil in a hot water tank/ engine coolant system then transfers the heat to the water/block depending how you want to use it , it would be interesting to see how long it would take to heat up a small tank of water if its used for this purpose and how much fuel it would use to do so, great for caravan boat etc
I would not recommend something like this on a boat. Even the good quality Webasto marine diesel heaters leak exhaust unless you have the marine specific muffler. Using something like this in an enclosed space like that is a death waiting to happen.
Hellooooooooooo! Thank you my lad for the amazing shits n giggles test! You tested it for everything we need to know. Love the accent and laid back attitude
One 2kw with the end chopped off, one 5kw and the other 5kw that was supposed to be the air and water but wasn't. Plus the air and water one. That's four. Oh and a Webasto Z that arrived today. :)
Heats only water. It's used as a pre heater / auxiliary heater on your high end BMW, Mercs etc. Another commenter found me one on eBay for £55. So I thought I'd get it for look.
For hot water use in a boat or camper van just have the water side of the heater going to a closed loop system header tank and a heat exchanger or hot water tank. I've got that on my van using a Webasto system and it works great.takes only 5 min for hot water and after that it's instant hot water
With knowing the pump speed you can calculate the fuel consumption roughly low 2.0h 2.0×0.02=0.04×3600=144ml hour High 6.4h 6.4×0.02=0.128×3600=460.8ml hour
The pump is a pulse pump and has a set amout per pulse witch is 0.02 ml.if you say the pump speed is 2.0h that 2 hurtz meaning the pump pulses 2 times a second. So it be 2 x 0.02ml = 0.04 ml a second there 3600 seconds in a hr so 0.04 ×3600 =144ml or you can do 0.04 ×60 =? Then ( ? )×60 =144ml
I'd like to know the hot water temperature output with only cold water going into it. With my propane tank less water heater, you adjust the temperature by controlling the amount of water flowing through it.
привет конечно интересно, давай дальше, ждем с нетерпением !!! интересно какая температура воздуха и воды в сравнении со стандартным 5kw heater (hi of course interesting, come on, look forward to it !!! I wonder what temperature of air and water compared to the standard 5kw heater)
I always read the comments, to get more thinking on a subject, so when I saw your comment I have no idea what it says because you wrote it in a language that may as well be an indeciferable code. You must have understood what the video speech says, in English, so you must be able to comment in English as well. What is the point of commenting in a completely different language that nobody can understand? Alan, England, UK.
@@alanmay1945 very very bad that you do not understand me. I understand you perfectly. If you have problems, then use google translator and google chrome with automatic translation function. You have language problems, not mine. Russia. Moscow.
I have a question about this heater, i have the same chinese one wich runs on Petrol and now i have the trouble that the glowplug goes out to soon, is there a way that i can change some setting so that the glowplug burns longer Any help would be great
Hello David, I have a 5kw Chinese diesel heater, and have been having an issue with it. It mysteriously cut out one night while it was running and has since failed to reignite properly. It attempts to start up, creates white smoke while it tries to ignite properly, but after a few minutes of this it goes into cool down cycle and then shuts off. I either get error code 'flame extinguished' or 'ignition failed'. I have watched heaps of your videos including the service diesel heater and diagnose white smoke issue videos. BUT when I try to separate the heater fan assembly part from the heat exchanger/burn chamber part I have a problem. In all of your videos including this one with a combined air/water heater you just seem to be able to take out four hex head bolts and the two aforementioned parts easily separate with a visible gasket between the two parts. I can get the heater out of the housing without issue, get the control board off etc, but when I take the bolts out to separate the heat exchanger and fan assembly to be able to access and clean the burn chamber and heat exchanger interior, it is like a gasket glue or sealant has been added because the two parts do not come apart easily, like all of them seem to in your videos. I have done all I can think to do that I can do without risking damaging the heater including recharging the supply battery to full charge (180AH deep cycle AGM battery), replacing the diesel and rebleed lines, replace atomiser mesh around glow plug, check exhaust and air intakes for blockages/abnormalities etc. Only installed 6 months ago, approx total of 30-40 nights it has run for in that time on low overnight, with the unit also turned up to high for around 20 minutes before powering down about once every ten uses. If I can restore the unit I'd really like to, I just purchased a replacement unit to swap it out with but I should of watched your 2kw vs 5kw comparison video first as I bought a 2kw to replace my 5kw and now I will not have a simple main unit swap out job to do when it arrives if I do use it, you understand why (different mounting plates, different hot air outlet sizes, etc). Any suggestions or advice you can give me would be appreciated. Gareth @ Tasmania, Australia
I'm fairly sure the mounting plates are the same size between the two heaters. I'd check/replace the glowplug. It might be getting warm enough to create vapour but not enough to light the diesel.
@@DavidMcLuckie Ah I realised after rewatching your 2kw vs 5kw comparison video that it was the overall lengths of the units that changes, before I thought it was the distance between the combustion air inlet and the exhaust that was being measured and were changing in the video. Anyway, the eBay seller I purchased the 2kw replacement through has just been inundated with neg feedbacks all relating to undelivered diesel heaters, so I'm pretty sure that I need not worry about replacing with the 2kw anymore lol. It could be the glow plug but the fact that the unit cut out while running through a night (during a time of operation when the glow plug is off) leads me to believe that it is more likely the burn chamber and interior of the heat exchanger are chock-a-block full of sooty deposits and need to be cleaned out. You seem to have seen stacks of these heater units, has any of them that you have seen before been glued or difficult to separate the fan assembly from the heat exchanger where the large gasket is? Every video of yours and other youtubers that I can find, the two parts separate easily?
@@DavidMcLuckie youtuber 'seven wanders the world' has the same white smoke issue in E583 and fixes it on E587, but again has no issue separating the two parts and accessing the burn chamber/heat exchanger interior etc
I am going with a bad translation for the U symbol of micro. And also being placed on the wrong side of the base unit ( A amps ) ..oh and it is off by a factor of ten .....but when your power supply was reading 8.2 ....the display was 82 Au .....if it is consistant ....well we know that a "gold" (Au) is a tenth of an Amp
I guess that a very cold and large water volume to be heated would keep the startup temps on the burn chamber much lower than previous, leading to possible soot accumulations if the burn efficiency decreases substantially. Perhaps the heated airflow should be reduced during such a phase to channel the heat use to getting the water 'up to temp', but check for hot spots away from the water chamber and avoid heating the electronics or other sensitive surfaces. As noted by others, be sure to minimize any restrictions on air flows in or out of burn chamber to get best burn conditions.
The manual does say to let the unit heat up for a few minutes before turning the coolant pump on. Perhaps this is help the burn chamber get hot enough that once you start running the coolant the chamber can stay hot enough.
I have a heated pizza warming trailer. I tried a planar D4D heater. On cool days it works well with temperature in trailer getting up to 180 deg F. But when heater has suction air at 105 deg F then heater goes in idle mode. It would be nice to know if these China heaters have save constraints.
Firstly I'm amazed how you people on TH-cam produce such professional videos with the equipment you have. If it was a TV production company it would be a half million pound job..the thing that interests me most about these heater is the efficiency of them.. excellent videos David..
The reason why tv productions are so expensive is everyone has to get a slice, then there's various unions involved. Here you have one guy that has to answer to no one, so he does the best job he can!
I know this is an old video now, but I just wanted to point out that if you go into the settings on the FLIR, you can change the "Emisivity" setting from "matte" to either "semi-matte", "semi-glossy" or "glossy", athough glossy is quite inaccurate and not recommended.
Changing this setting would enable you to give more accurate readings on the various surfaces you showed us.
I can't believe I've only just discovered your videos. Your absolute no nonsense approach and straight talking is a breath of fresh air.
My family originate from lincolnshire, so I've had a north-ish upbringing but live down south where most people sugar coat everything and wrap it in cotton wool. I wish everyone just cut the cra and got straight to the point like you do 😁
Absolutely fantastic. Well presented, informative while remaining humorous throughout. I am a engineer and have been for 35 years, I've seen technology change but seeing it through someone else's eyes who is clearly passionate with basic garage tinkering as I am is just brilliant. The EGR heat recovery has to feature with this at some point, maybe even connected to a calorfier or insulated storage tank. For the record, the Eberspacher D5W doesnt have a great deal of heatsink fins either. Keep up the good work and glad you've maintained your signature "Well Hello"
These experiments and teardowns are as educational as they are appreciated! I would like to buy one of these water heating models for use as a backup heat source, that can also purposefully heat water. Multifunctional devices are great survival tools!
Loving the videos pal!!! One thing I’d like to see is it actually connected up to a vehicle and see how long it takes “real world” to heat the coolant and how hot it does get. Thanks buddy , chaps like you are what the internet needs more of!!
A great test. I'm preparing myself to buy one of these heaters. Disassembling it at the end of the test was a great idea. It shows how simple construction it is.
"I'll tell you if it's dog shite" - My kind of no nonsense video. All the better with the Scottish accent!
Bought the same heater 2 years ago and been using it in my trailer camper. It's been great, no problem so far. The shipped water pump is not pressure activated, so got a replacement with a separate switch (the original pump still needs to be connected eletronically, else you'll get a error message). The fuel pump stopped working when near freezing temperatures, but that went away with winterized diesel. The heater is surprisingly fuel-efficient. I've been heating water directly with it. Was worried about hard-water build up, but so far no drop in water flow/pressure detected.
Hi David, another great review, all I would like to see is a flow rate of 2 litre per minute going through the unit at tap temp and then see what the rise is on full power , no recirculating involved PLEASE , PRETTY PLEASE !!
Now you have outdone yourself i dident even know they made ones with water !!!
wow so glad i found your channel, those are some hardcore reviews that all of us DIY guys are searching for. great job, thanks. Subscribed
I was really pleased to see this as I have one of these I brought from Aliexpress about 6 months ago. I run a glycol mix through the heat exchanger on a hot water tank and I have an open circuit with an overflow bottle. Turned out to be really complicated with different size fitting on the pump, heater and water tank. It is now working well and will heat 20 litres of water up to shower temperature in about 30mins (on low) Mine has a much more basic controller with a separate water pump but the heater is the same brand. I have not worked out how to exhaust hot air out of the van in the Sumner when I don't need it. It is definitely the cheapest way of diesel air/water heating.
I was wondering about that - not ideal on a hot day if you just want a shower. I think i'll go with an ex-car Webasto and use a heat exchanger for warm air.
Hi, I have the same heater. You figured a way to wire up a thermostat to turn on the air side?
Maybe you can cyrculate the hot air with an hose back to the air inlet.
@@jonasstahl9826 I would wonder if that might trip the overheat protection that monitors the air temperature of the air going over the heat exchanger. I did not have room to do this but my initial idea had been to simply move the hose to an external exit in the summer and an internal one during the winter.
I have decided that the best way to use this is to treat it as a cheap diesel water heater and view the hot air as a waste product!.......removes so many problems.
Hey do you have the link to the one you bought off Aliexpress? I can't find any on there.
You can probably double your heat output or at least increase it by running the water through a small radiator with a fan pushing air through it.
I appreciate your humour and self talk. Made the video more interesting to watch
Would love to see the liquid side set up in a loop to simulate radiant floor heating in a camper van
I'm wondering if it can be run in a closed loop system and if it has any safety features like over temp and over pressure shut down, I'm thinking a Chinesium version doesn't.
@@rotattor Basically like a semi trucks with diesel apu heaters. Heats water to heat the trucks water system, which the trucks heater system then blows into the cab to heat it up. IF it is not ran thru the trucks cooling system with a pop-off for pressure, Might have to make a reservoir with a cap for returning water to go into, that the heater water pump would pull water from to run thru the heater. That would deal with pressure & a water thermostat valve to redirect water reservoir once the loop is at a certain set temp.
@@Weirdracin so basically the diesel heater just ties in to the vehicle engines coolant system via a thermal transfer radiator unit ( I forgot the proper name for it LOL! ). So the coolant system uses the reservoir for thermal expansion in a semi closed loop system ?
@@rotattor Ya, Usually ties into the hose to the heater core, but the vehicles cooling system would be part of the system for water expansion with also the radiator cap for pressure pop-off, should it get too high.
They sometimes have a thermocontrols bypass valve system, to cut the flow partly to the engine, so most of the hot water is mainly circulated between the diesel heater & the heater core to heat the cab, with some going into the engine to help warm it also, when the heater core is at the proper heat requirement.
@@Weirdracin interesting, thanks.
Thanks for doing the vid David. When I saw the current draw when the heater was running, and the heater plug should have been off, I was convinced there was an electric element to heat the water!
Just looked this up on the link you provided and they are featuring this vid to demonstrate the product, hope you got a payment :)
So, I could heat the water in the engine block at the same time I heat up the cab.
yes, which means you have a warm engine to start easy & also if needed use the trucks heating system to add more heat in other areas the unit is not in., thou you would be using that heating systems fan units, which will draw more power.
A few trucking companies use this type of heater to keep the driver warm and the motor.
Or do something like a heated floor in a van.
I was thinking the same thing.
It'd be very interesting to see how much heat output you get from the "air" side of the heater when the heat exchanger is fully utilized to heat water. I suppose the best way to test this would be to run a constant supply of cold water (i.e. a garden hose) through the heat exchanger, and see how much the output drops. I think a lot of people are worried that the heater might produce too much unwanted heat for it to be useful for heating water in the summer.
I don't think that is it's intended use. More for heating engine coolant or heating a tank of water, perhaps underfloor heating. I'd go for a pure diesel water heater if you want to heat water only, I've got a used eBay one en route for a bit of play with.
@@DavidMcLuckie We should totally test the temperature increasement in the woodshed.
@vperformance We should totally fit the heater. :)
@David McLuckie
I know the intended application isn't for "on demand" hot water. That's not what I'm suggesting. Whether you're heating a car's cooling system or a tank of water, the water will be cold to begin with, and will gradually heat up as it gets circulated through the heat exchanger. I think it would be interesting to see how much heat the cold water "steals" from the air heater. Obviously as the water in the system warms up, it won't be "stealing" as much heat as when it was cold. I just suggested using a garden hose for the test because it would provide a constant supply of cold water to make things a little more consistent. A large bucket of water would also work.
It's it possible to select only hot water or only hot air at one time?
Where can I get one of these? All I’m finding on eBay is a heater with no water hookups. Thx.
Wonder if it may me more efficient as a water heater if the air fan was removed? (Or does the external fan have the sense magnest in?)
And 2yrs later, these never did come up cheap from china.
Please, can you hook it up to a box of wine and see if it's suitable to for a mulled wine tap?
Wine and aluminum aren't going to play well together. You could absolutely use it to heat a working fluid and then use a food-grade heat exchanger or stainless steel coil to heat your wine. Seems like a lot of steps when just throwing the wine in a big pot on a burner will do the same thing.
Nice one David. First one I've seen that does both. Love your honesty and enthusiasm.
Thanks for buying one for us and testing. Once I've a garage of my own I hope to get underfloor heating installed, this would be sweet for that.
My suggestion would be to do both your egr on the exhaust, in series with the water heat exchanger, to see if it would speed up the heating of X liters of water. See how much energy you can capture instead of letting it go as waste heat out the exhaust unused.
Adding the EGR as well is absolutely happening.
I was planning to buy the "air only" version of this and putting a car HVAC heat exchanger inline with the hot air output. Circulate coolant through the exchanger and the boiler (normally engine coolant driven). If this comes down in price, it will be way easier... But the balance between air heating and water heating seems to be much more in the air heating favor, so, will wait for more tests...
For underfloor domestic heating you'd be far better off going with a conventional hot water heater and pump. Natural gas is significantly cheaper than diesel fuel per BTU. Depends on your local rates, but electricity may even be cheaper per BTU than diesel.
When the water pump is on can you turn the fan blows off?
Negative, hot air and water at the same time.
david always love your videos and the work you do on all of these please keep up the good work :)
Wonder if you could use the hot water system side for a radiator in a separate and locked part of the workshop 🤔🤔
Really loved the unit dismantling part in the footage!I think this should be the only choice for me to avoid lpg onboard and to create an easier to maintain system.In Italy there's no way to do a legal diy van conversion unless you build everything removable inside without screws too.Just crazy!So I'm living the nightmare to design a stealth mode based van, with independent energy/water/heat sources out of the frame with quick release connections on every module inside the vehicle.This unit will serve well the kitchen output as the shower too.Thank You!
without screws ! wow , that would be a challenge!!
@@doneown503 That's right, this is because in the absence of type approval, the van remains a vehicle for transporting cargo and none of it has to be permanently anchored.
Any cargo can be restrained with straps or quick-release systems, but not firmly attached to the chassis.Look up Vancubic to get an idea of the crazy work of these guys who solved the problem.
Please test whether this hot water heater is able to produce enough hot water in winter temps to supply a van life van indoor shower ?!
Been waiting for this to be posted.
Same here, I was going to buy just the normal diesel heater for my caravan, while being annoyed that I still have to use gas for hot water, but then I saw that David was getting a water heater version.
So now i'm wanting one of these, if it's any good (15mins in).
@@Pieh0 I don't think it is ready for main stream. Why put the water heater system only on the bottom and not all around? They could have redesigned the body to have water chambers all around the flame part. Then again, it is only meant to keep your car/vehicle warm by circulating coolant through your engine. I want to use mine to heat a shop. So heater on bottom of assembly, to me, it's a deal-breaker. ☺
@@danyf3116 Maybe the water would start boiling the heat exchanger was covering the lot, or it took too much heat away from the air.
In any case, it seems to do both reasonable well.
@@Pieh0 I'm sure it works well for what it is intended to work for. However, we all know who comes here. No truckers wanting to find out how to hook it up, I'd say 90% are DIY'ers like you and I and David. What I want to do with it is WAY beyond what it was meant to do, I'm sure.
A bit like a PC fan trying to push his CPU as far as he can. This is the same for me. How can I suck as much heat as it can produce for what I want it to do? ☺
I am looking for a chinese air and water heater but can't find one for sale online. Anyone got any links for one of these???
Ebay £285
most importantly what was the fuel consumtion ?!
Someone else on youtube demonstrated how long a 10ltr tank of diesel would last using the same heater, result was 25 hours.
@@TheTwistedStone Way, way less than idling the engine.
those asking about instant hot water for camper use, could be set up how my webasto is with a closed loop via a plate to plate heat exchanger, which works really well on that???
jamesc76 would like to see your plate to plate heat exchanger set up.
@@ronwasser4852 not that easy on here!
Great video yet again David. Might give one of these ago in the camper I’m building 👍
What did you ask for when you ordered it. I cant seem to find it to order
I had to watch this twice just to enjoy the accent!
Hello David big fan from America. I bought this unit after you demonstrated it.
After wandering in here by accident I hung around long enough for the full review & test. Not relevant in my life at all but strangely interesting to watch.
I'd like to see what the hot water could actually be used for? A radiator, underfloor heating or could it be used for a shower or sinks in a camper van?
Good question. A lot of Diesel Heater owners have RV's of some type and predominantly use them for heating ambient air space. Perhaps 70% of those same RV's also have a hot water systems so is this new design about to replace water heaters (eg: 50-100+ litres) or to preheat water tanks? Preheating or 'warming' of water lines (assuming a flow through pipes) would also be very advantageous in alpine or sub-zero environments where water pipes freeze. Practically, this means that you can wait longer in the day to have a shower, knowing that the water pipes have not frozen over.
Don't forget to add Diesel Fuel Conditioner to the diesel fuel in the winter. Diesel Fuel Gels like Jell-o when it's below freezing without the Diesel Fuel Additive. Howe's is a good brand.
SUGGESTION - Do you think you could minimize the dependence on an external battery by rigging it with a set of Thermoelectric Generators (TEG)? That way it only needs the vehicle battery to get started, but generates enough power from the TEG to keep the fan motor and pump going...???
Swiss Jetpilot1 great idea!!
Other people have asked and I'm trying to work out how many I'd need. Then a way of attaching them. :)
Maybe these guys can help you -
www.tegmart.com/
th-cam.com/video/7O3FlujxXCw/w-d-xo.html
Hi David
I saw a van build video recently with wet underfloor heating.
Could it be set up to provide:
Blown hot air, zig zag piped underfloor heating and a hot water header tank to wash the prosecco glasses.
Cheers
Johnnie
Well yes. It just might take a while to heat the water though.
Love ur Videos Mr Mc Luckie, Very informative, practical and to the point! Nay ta mention the humor and the Scottish Accent.
I was curious, I’m from the USA, what are the chances of using the hot air and a baseboard heater simultaneously? I was thinking the hot air is obviously faster but baseboard heat, with glycol not water, would be a nice supplement since it’s a much more even heat. What would I need to do to be able to flow antifreeze through a baseboard heat section or two. Figure 3/4 in diameter and 8 or 16 feet long.
I'd think a pump and an expansion tank.
I've looked at hydronic heating videos on yt
Yes,pump,expansion tank,air bleeder at a high point. And for longer duration of heat, a small storage tank. Thus a campervan watertank would be ideal.
Water heating side of this was mainly used to raise the temperature of the engine coolant so as not to start from cold and to stop overnight freezing of the engine in very cold climates.
The heating water will want dosing with inhibitor and a PH between 6.5 - 8.5, it will help massively with corrosion 👍🏻
If it's a self contained system, yes, but in my plan, i'm wanting to replace the Carver Cascade gas/electric water heater in my caravan with something like this diesel heater, and as that water is used in the sink/shower, that's going to be a problem :).
@@Pieh0 This diesel heater would do dhw but only with a indirect store. i'm guessing the carver uses gas & the immersion for quicker heat up times for the stored hot water ?
@@EliteHydronics. Yes, which as you can imagine, takes a long time to heat up if you're just on gas of electric.
I put urine in mine this is the best inhibitor
@@thegeneral3094 I put urine in everything, just to be safest.
Hello David. Don't know if you have "ice fishing" anywhere in the UK. I don't particularly like fishing but ice fishing, in a fish hut not in the open, is excellent, and best overnight. You use a small shack (ours is 5' x 8') with a hole through the floor (and ice), insulate it and put in a stove/heater so it can be sauna like inside while a minus 15c blizzard might be raging all around. Good and safe heaters for huts are hard to find. The diesel heater might be perfect since it seems to vent properly. One of the best things is to be able to cook tea or coffee on the stove, and if lucky enough, also cook some fresh catch with some other ingredients. Everyone always insists that it is the best fish they've ever had. So... while the diesel heater is set up to warm the hut might the exhaust pipe be hot enough to loop it into an enclosure with a flat surface on it that could be used as an element to cook over before being vented outside? The enclosure could be engineered to direct as much heat as possible to the top surface. Ours is a small oil stove that is very good to cook on but is not fully sealed and is a constant safety concern. How about a demo of cooking bacon and eggs in some way? Dan
Oh yes, I am in Ontario, Canada at Lake Simcoe, which is a very popular ice fishing lake.
Nice one, I would like to see how this heater copes with heating a large body of water like a fish pond, as that is what I would like to do during winter
I was thinking the same. Might be pushing it, but running through the filtration tanks might be better. Trying solar and heating elements atm.
@@MrMadenuff I think it would work, it worked for me with a small rocket stove I need to try lol
@@MrMadenuff I run my out door swimming pool fine with one
Do you mean a fish pond and somewhere else with the hot air? If not you'd want one of the diesel heaters that just heats water.
@@DavidMcLuckie Yes obviously would take a while to get desired temp but once there temp just needs stabilising and yes would like hot air too, I think the exhaust method would be better for what I require
Would love to see how many litres per minute it can flow, while maintaining heat of water.
I wonder if Mr. Eberspacher or Webasto is watching this and thinking it's their turn to copy the Chinese?
He should be watching and getting ready to send Big Dave some heaters!
Webasto has been offering water heating units since at least the late 80's ..I maintained a fleet of rural school busses here in Alaska that were eguiped with them as engine preheaters.
@@greywuuf Eberspacher also have great water heaters, but they don't come combined with air heater
@@greywuuf more amazing to me is that they do still sell the exact same model of water heater that i have working in my 1986 auwärter bus. they must have nailed it then and did not find a reason to discontinue them in over 30 years.
@@dauerwerbesendung7045 not sure "nailed it" is exactly correct.....the ones I have been around in extreme cold will often "fog" the fuel without igniting it ....causeing heavy smoke to leave the pipe ....occasionally when it is really cold and you really need it .....they will "light" external to the pipe .....and just act as a blow torch ......circulating cold water ... Depleting you battery and leaving you in a bad way .... Just saying they are not perfect but the can help.
I wonder if I could use a small oil cooler attached to the hot air outlet to get hot water.
I think this would be perfect as a preheating unit for the engine in our diesel powered rv!
@@andrewbartleman9169 thank you for the input.
Yeah, but put in a valve and a bypass for when you don’t need to heat your engine. If I was camping for days or weeks somewhere I’d rather heat shower water.
Any suggestions how drawl fuel up to unit, this little pump doesn’t seem like it can do it
Ave's scottish brother
That's a good one
Haha, yeap
Do the instructions say if it can be used without the water side filled or wou.d it over heat
First time viewer, and now a subscriber. You're a twin of my fav, Mustie1 except one of you has a funny accent. Great job, well produced and very entertaining. I'll be ̶s̶t̶a̶l̶k̶i̶n̶g̶ um, following you...
I too am a Mustie fan. :)
Hey David great video. I would like to install one of these on my campervan. My questions:
1) it looks like the hot water pipe will have to go on the outside of the vehicle, unless u have another suggested way to install?
2) so for a camper, this is not going to be instant hot water on demand but need a hot water tank storage?
It's certainly not meant for "on demand" hot water. You'd definitely need a storage tank.
Like the intake and exhaust the water pipes would need to be outside. The only alternative I can think of is building a box to raise it off the floor. Either storing of hot water, or attached to the vehicle coolant system to heat the engine.
It definitely isn't designed for heating water for camper use, it's only purpose is to heat coolant water so engines are not operating from cold in frozen climates. In Canada they fit cars with electric sump heaters, this heater does that job, a lot better, and also heats the interior of a vehicle so it doesn't need de-icing before driving.
This is its intended purpose, to attemp to use it for camper water heater would invalidate any warranty and would undoubtedly need considerable modifications with a water tank fitted with a heat exchanger coil.
@@Sarge084 I agree. This is the go to explanation..
Thank you all for your help, you can tell we are not very knowledgeable in this aspect. LOL .... back to the drawing board. David, your videos are awesome! cheers
Perhaps the glow plug measure of AU is Chinglish for AV, which would be the Amps x Volts = watts. Watch the movement of the power supply amps when glow plug turns on, and multiply by 12 or whatever voltage is being drawn. Maybe close enough for CE standards.
Who manufacturers these? I have been trying to find other sellers trying to find the best price and can't find any others.
www.cndeautoparts.com/Air-Heater-Water-Heater-Integrated-Machine-for-Diesel-c97700/
Do you think this would work in a water fed pole window cleaning van setup to provide hot pure water? Setup would be tank of pure, 100psi 6lpm shurflo pump, water heater then 100m 6mm microbore hose to brush head with univalve (on/off flow control) or would it best to have heater between tank and shurflo pump? Max lpm at brush head is 3lpm would the heater provide that level of hot flow? And would it need turning off between jobs to stop the water boiling or would the cessation of water flow cut the heater or would it need recirculating back the the tank? Many thanks for any answers!
In short, no. That particular heater is only good for about 500w of liquid heating power. I've got a few videos where we made a diesel water heater into an 'instant' shower, which would be similar to what you are after. I've seen a few water fed pole heater builds and a few have commented on here. Have you thought about a gas boiler type? Something like this - www.amazon.co.uk/Camplux-Outdoor-Portable-Tankless-Regulator/dp/B07H2ZMCNL - other cheaper chinese versions are available. :)
So now that you have seen it, how reliably SAFE is this heater- would you install it in YOUR boat ?
Finally we have options. Thank you for the great reviews/inner workings..now I need to find one.
Dave, would like to pick your brain on this unit
Can you scavenge the exhaust heat as well using the EGR you used previously ? Be near zero point energy then lol
That'll be happening. :)
@@DavidMcLuckie turbo diesel inter cooler submerged in a hot-well tank with the exhaust blowing through it plus the recirc system off the blower?
How long did it take to get delivered to you from China.
We have this heating system but we dont have a controller. Do you know where we could buy just the controller...thanks
Great it's finally arrived! Thanks for the review! Is this the "5-10" kW version (larger) or the smaller version( 5kW max) as you've found with the hot air version? Can you do a video showing the thermal power split?? Thanks again. Great to see technical breakdowns!!
This is the larger of the two heater sizes.
@@DavidMcLuckie You mean the same size which is a 5 kW but marketed as 2,3,5 or 8kW, not the small "true 2kW" version. trustdog seams to be misinformed about heater sizes
@Erik_DK - Actually, he did show (in a recent video) there are two sizes of heaters... basically a 2-5kw & 5-8kw, give or take a kw. The housing dimension (between the two kw versions) is considerably different but I do see your point how some manufacturers are marketing the larger units as 2, 3, 5, 8 kw, which makes it a bit tricky for those needing the dimensionaly smaller 2kw unit to mount in smaller tighter places.
Great video! Anyone happen to know if the display features a clock and programmable timer and/or if the display controller can be swapped out for a display that features a clock w/a programmable timer?
Thank you! Did you find one of these split water/air versions in the smaller size? Thanks again for you technical breakdowns, it's realy apriciated! :)
I wonder of you could plumb it into a back boiler style hot water tank, and run a glycol through the loop from the heater to avoid corrosion of the chinesuminum 🤔
Yep I would think that would be essential or the aluminium would not last particularly considering the non potable water many will use while travelling if say just using the water heater for general washing/showering. I would use a stainless steel heat exchanger will glycol coolant running through the heater but of course you need to consider the correct implementation to ensure the primary water heating circuit is not over pressurised.
@@rolandmatters1619 You think this could work for decently warm showers?
I'm putting one on the boat with a diversion valve so I can send hot water to the hot water tank heat exchanger or main engine block...... the main engine is 850 kg of cast iron and boy does it love a little block heating action on a cold winters day..... really cuts down on the wear and tear on a cold start..... I've run two Chinese 5kw air heaters, one lasted +/- 8000 hours, the other threw a bearing and seized at 1500hrs, luckily at the end of winter. Greetings from New Zealand......
I would have to say the AU on the glow plug may just be the Amp's the Glow plug is pulling. When you started the shut down you can see the AU @ 8 and the Amp's on the meter around 8.5amps.
Another great video, I would really like to see this thing on a car/truck, working to see just how "Hot" it can keep an engine in the cold.
TdrSld me also but I don’t think it would do keep an engine block warm on a car/truck in freezing temps.
Does the air fan run when you have it on water heating mode? So that If want hot water in the middle of summer, it will heat up my campervan air also?
Yes. Essentially it's an air heater with water heating tagged on.
Very well put together.
You sir, are a legend!
Well done :-)
3 questions 1 should it came with some flapper during the summer when you just need hot water but not hot air. 2 was it able to add some components to make heated floor loop. 3 what's the differences between this and the one have the water tank that can preserved some gallon of hot water
I like your pot of lava, but it needs more hot dogs.
Another great video David! I'd be interested to know if the water pump with it is drawing some of that 5 amps as it was running dry- although I'd hope not!! Also if/when you get it plumbed up correctly, does the on board water pump have a delayed start or anything like that? as pumping theoretically 'cold' water through an otherwise hot heat exchanger could have detrimental effect on the heat exchanger/ casing leading to sealing issues.- Probably why those screws were so tight! Solid fuel boilers for example have back end protection valves to ensure the returning water is at a set temperature- a car thermostat works in much the same way.. just a thought! Keep up the good work!
22:05 ?
the water out let is designed to go to a coil in a hot water tank/ engine coolant system then transfers the heat to the water/block depending how you want to use it , it would be interesting to see how long it would take to heat up a small tank of water if its used for this purpose and how much fuel it would use to do so, great for caravan boat etc
I would not recommend something like this on a boat. Even the good quality Webasto marine diesel heaters leak exhaust unless you have the marine specific muffler. Using something like this in an enclosed space like that is a death waiting to happen.
Are you kidding me i have just fitted a normal one now i want this 1
I did two I'm pissed. lol
that makes three of us
What make is that,what company did you buy it from.
isn't AU (probably AV) just Watts? A x V = W
goatman86 AV is only Watts in lineair loads. As soon as you have a cosinus phi they are not the same (blind power)
Hellooooooooooo! Thank you my lad for the amazing shits n giggles test! You tested it for everything we need to know. Love the accent and laid back attitude
These would be great for tiny home s
For the water pump. Carling rocker switch running off heater supply power (10A) with breaker?
Thoughts ?
I've lost count now, just how many "Chinese Diesel Heaters" do you now own?? 3? 4?
One 2kw with the end chopped off, one 5kw and the other 5kw that was supposed to be the air and water but wasn't. Plus the air and water one. That's four. Oh and a Webasto Z that arrived today. :)
@@DavidMcLuckie Ok. I'll bite. What does the Webasto Z do that the air heater doesn't do?
Heats only water. It's used as a pre heater / auxiliary heater on your high end BMW, Mercs etc. Another commenter found me one on eBay for £55. So I thought I'd get it for look.
@@DavidMcLuckie ✔️ I have a pre heater on my Toyota Land cruiser
I love your 'natural' style of videos. Good work!
Also see "project farm" videos. On testing and comparisons.
@@keithwittman4741 Thanks for the recommendation. I searched 'project farm' and realised I'd been a viewer for years.
Super-duper :) however I've missed one info: is that possible to use this webasto with turned off air fan, only to heat up water?
No, air and water. Or just air if you boil off the water.
David McLuckie what do you think would prevent you from adding a switch to the fan? Overheating of the unit I guess?
@@DavidMcLuckie Are you saying that you need to have the hot air blowing to get the hot water function ? Sounds strange .
For hot water use in a boat or camper van just have the water side of the heater going to a closed loop system header tank and a heat exchanger or hot water tank. I've got that on my van using a Webasto system and it works great.takes only 5 min for hot water and after that it's instant hot water
With knowing the pump speed you can calculate the fuel consumption roughly
low 2.0h 2.0×0.02=0.04×3600=144ml hour
High 6.4h 6.4×0.02=0.128×3600=460.8ml hour
kristian humphries whats the 0.02 and 0.04 for?
The pump is a pulse pump and has a set amout per pulse witch is 0.02 ml.if you say the pump speed is 2.0h that 2 hurtz meaning the pump pulses 2 times a second. So it be 2 x 0.02ml = 0.04 ml a second there 3600 seconds in a hr so 0.04 ×3600 =144ml or you can do 0.04 ×60 =? Then ( ? )×60 =144ml
@@kristianhumphries8026 Ah, thank you. I was missing that the pump pulsed at a given speed
I'd like to know the hot water temperature output with only cold water going into it.
With my propane tank less water heater, you adjust the temperature by controlling the amount of water flowing through it.
Yes. The slower you go the hotter the water. It wouldn't make a very pleasant shower.
привет конечно интересно, давай дальше, ждем с нетерпением !!! интересно какая температура воздуха и воды в сравнении со стандартным 5kw heater
(hi of course interesting, come on, look forward to it !!! I wonder what temperature of air and water compared to the standard 5kw heater)
I always read the comments, to get more thinking on a subject, so when I saw your comment I have no idea what it says because you wrote it in a language that may as well be an indeciferable code. You must have understood what the video speech says, in English, so you must be able to comment in English as well. What is the point of commenting in a completely different language that nobody can understand? Alan, England, UK.
@@alanmay1945 very very bad that you do not understand me. I understand you perfectly. If you have problems, then use google translator and google chrome with automatic translation function. You have language problems, not mine. Russia. Moscow.
I have a question about this heater, i have the same chinese one wich runs on Petrol and now i have the trouble that the glowplug goes out to soon, is there a way that i can change some setting so that the glowplug burns longer
Any help would be great
Damn, I find this the day after my heater-only arrived! Damn you TH-cam!
same here :-(
Hello David, I have a 5kw Chinese diesel heater, and have been having an issue with it. It mysteriously cut out one night while it was running and has since failed to reignite properly. It attempts to start up, creates white smoke while it tries to ignite properly, but after a few minutes of this it goes into cool down cycle and then shuts off. I either get error code 'flame extinguished' or 'ignition failed'. I have watched heaps of your videos including the service diesel heater and diagnose white smoke issue videos. BUT when I try to separate the heater fan assembly part from the heat exchanger/burn chamber part I have a problem. In all of your videos including this one with a combined air/water heater you just seem to be able to take out four hex head bolts and the two aforementioned parts easily separate with a visible gasket between the two parts. I can get the heater out of the housing without issue, get the control board off etc, but when I take the bolts out to separate the heat exchanger and fan assembly to be able to access and clean the burn chamber and heat exchanger interior, it is like a gasket glue or sealant has been added because the two parts do not come apart easily, like all of them seem to in your videos. I have done all I can think to do that I can do without risking damaging the heater including recharging the supply battery to full charge (180AH deep cycle AGM battery), replacing the diesel and rebleed lines, replace atomiser mesh around glow plug, check exhaust and air intakes for blockages/abnormalities etc. Only installed 6 months ago, approx total of 30-40 nights it has run for in that time on low overnight, with the unit also turned up to high for around 20 minutes before powering down about once every ten uses. If I can restore the unit I'd really like to, I just purchased a replacement unit to swap it out with but I should of watched your 2kw vs 5kw comparison video first as I bought a 2kw to replace my 5kw and now I will not have a simple main unit swap out job to do when it arrives if I do use it, you understand why (different mounting plates, different hot air outlet sizes, etc). Any suggestions or advice you can give me would be appreciated. Gareth @ Tasmania, Australia
I'm fairly sure the mounting plates are the same size between the two heaters.
I'd check/replace the glowplug. It might be getting warm enough to create vapour but not enough to light the diesel.
@@DavidMcLuckie Ah I realised after rewatching your 2kw vs 5kw comparison video that it was the overall lengths of the units that changes, before I thought it was the distance between the combustion air inlet and the exhaust that was being measured and were changing in the video. Anyway, the eBay seller I purchased the 2kw replacement through has just been inundated with neg feedbacks all relating to undelivered diesel heaters, so I'm pretty sure that I need not worry about replacing with the 2kw anymore lol. It could be the glow plug but the fact that the unit cut out while running through a night (during a time of operation when the glow plug is off) leads me to believe that it is more likely the burn chamber and interior of the heat exchanger are chock-a-block full of sooty deposits and need to be cleaned out. You seem to have seen stacks of these heater units, has any of them that you have seen before been glued or difficult to separate the fan assembly from the heat exchanger where the large gasket is? Every video of yours and other youtubers that I can find, the two parts separate easily?
@@DavidMcLuckie youtuber 'seven wanders the world' has the same white smoke issue in E583 and fixes it on E587, but again has no issue separating the two parts and accessing the burn chamber/heat exchanger interior etc
Fixed it, just needed a little bit of force to pry the two parts apart. Was heavily blocked inside heat exchanger and burn chamber.
Now you need another bucket of water with the EGR hooked up to recover more heat.
EGRception
Don’t forget the DPF
Do you think this would make an effective pool heater for a small above ground pool no larger than 4500 gallons?
No.
1 AU = Astronomical unit = the distance from Earth to the Sun
If the glow plug is at 82 AU... Good luck finding it again
Was looking for this comment. I was going to say the same thing
I had thought that. Perhaps it's the energy required to move a photon 1 AU.
I am going with a bad translation for the U symbol of micro. And also being placed on the wrong side of the base unit ( A amps ) ..oh and it is off by a factor of ten .....but when your power supply was reading 8.2 ....the display was 82 Au .....if it is consistant ....well we know that a "gold" (Au) is a tenth of an Amp
3 years later, does it still work?
" DOG SHATE " !! THE REAL ENGLISH LANGUAGE !!
Shite 😂
@@obde12 ha,ha,!
outstanding!! Really enjoy how you cross cut these and tear take them apart so we can see whats going on!!!!
I guess that a very cold and large water volume to be heated would keep the startup temps on the burn chamber much lower than previous, leading to possible soot accumulations if the burn efficiency decreases substantially. Perhaps the heated airflow should be reduced during such a phase to channel the heat use to getting the water 'up to temp', but check for hot spots away from the water chamber and avoid heating the electronics or other sensitive surfaces. As noted by others, be sure to minimize any restrictions on air flows in or out of burn chamber to get best burn conditions.
The manual does say to let the unit heat up for a few minutes before turning the coolant pump on. Perhaps this is help the burn chamber get hot enough that once you start running the coolant the chamber can stay hot enough.
I was really looking in these.. wondering if they were any good, so this video is just what I needed!
I have a heated pizza warming trailer. I tried a planar D4D heater. On cool days it works well with temperature in trailer getting up to 180 deg F. But when heater has suction air at 105 deg F then heater goes in idle mode. It would be nice to know if these China heaters have save constraints.
Saw this 4 yrs back any updated info where to find these.
www.deshiye.com/hybrid-air-water-heaters-integrated-heaters.html
with your water connections - are there quick connect options (how hot - will plastic fatigue and melt?)
My diesel heater is not powering on, the controller shows nothing and I'm getting 12 volts to it. What could that be ? The computer?
If you've got 12V and the inline fuse isn't blown and has good contact. It'll most likely be the ECU or the connections onto it.
@@DavidMcLuckie the fuse is good and getting 12v at the ecu but nothing comes out off the ecu's connectors.