Lay z spa Maldives heating using a boiler system

[@Cookers2750]

Hey Mike copied what you did and it’s changed our lives. Fantastic brilliant and wonderful. Took me a day to sort but easy and hot!! Cheers pal

[@mikee130274]

Now that is a nice comment to read. It’s an amazing addition to a hot tub. I’m really glad you’re enjoying it. Now that you really can enjoy the tub. Feel free to join our Facebook group. Lay z spa hot tub selfies and share your setup with us. Help get more people on board.

[@rhdtv2002]

I have the same setup here in the USA for my pool but bigger tankless water heater..super awesome idea

[@richardtweddle800]

Hi mate, nice setup. Have the pipes from the hot water touching the tub not cause any issues with the linner? Them pipes must get quite hot. Thanks ( asking because im in the middle of doing this my self) thanks

[@paulburgess5739]

It’s seems quite loud. I have a six person hot tub, not a lazy spa, hot tub so thinking about plumbing this into my hot tub but using the pump that’s already built into my hot tub and disconnecting the 3 kW heater. I think it would work perfectly. It’s just a noise off the gas boiler seems quite noisy

[@mikee130274]

It’s not noisy at all. Especially in my shed

[@BSmith244]

I was searching for a way to do this and found your video. Looks a great set up, I’d love more info on the parts you used.

[@mikee130274]

Hi Barry. Read the comments on this video. It’s all been listed. Thank you.

[@southwesthiker5792]

Hi Mike Fantastic set up what is the thread size of the fitting that fits to the pump. looking at getting one. Cheers Adrian

[@mikee130274]

1 inch

[@catalinseverineanu2550]

Hi Mike! Don't you have problems over winter months with gas and also water freezing in those outside pipes? Cheers!

[@simonmccaughey]

Brilliant! That's a fab idea. Do you have any idea how long your gas will last, or how much gas you use per day? I love the idea of +4 degrees in 20 minutes!

[@mikee130274]

It’s looking like about £30 a month with heavy use at weekends and used daily for about an hour and a half in the week

[@mikee130274]

With hydro jets on sitting in the tub you can put in a degree every 7 minutes 😃

[@simonmccaughey]

@@mikee130274 super, thanks!

[@mikee130274]

The 47kg bottle lasted me 4 and a half months 👌

[@louiepage6623]

​@@mikee130274 is that the same now

[@robmcmeekin6663]

Hi Mike, that is fantastic thank you, thanks fr taking the time to show us the set up and direct us in the way of the pump. Incredibly helpful. Would be interested to know the temp sensor you used and how difficult it was to set up. Only if you get the chance, cheers, Rob.

[@mikee130274]

Hi rob. I used a sonoff and a sonoff temperature probe. I’ll add links below. They don’t come together you have to order separately. I also bought an extension cable for the probe as it’s not long enough. So 3 orders. SONOFF TH10 10A Smart WiFi Switch Monitoring Temperature Humidity,Works with Amazon Alexa/Google Home/IFTTT,APP Remote Control Switch Alexa Light Swit www.amazon.co.uk/dp/B06XSHMG8P/ref=cm_sw_r_cp_apip_2zF6cZWFOjRuP For Sonoff TH10/TH16 Thermostat Switch Wifi Thermostat Mobile APP Remote Wireless Remote Control Time Switch Waterproof Temperature Probe Digital Wate www.amazon.co.uk/dp/B07BHNPMYQ/ref=cm_sw_r_cp_apip_MbUGlWulGNfPY SONOFF AL560 Sensor Extension Cable,5M Length,Suitable for SONOFF DS18B20,Si7021 and AM2301 Temperature&Humidity Sensor www.amazon.co.uk/dp/B07T5RKM6K/ref=cm_sw_r_cp_apip_qDgy1jPg1uoCA

[@robmcmeekin6663]

Thank you very much Mike, you are a star.

[@mikee130274]

@@robmcmeekin6663 no problem at all. Happy to help.

[@Cookers2750]

@@mikee130274 Does the probe actually goes in the tub? Great idea by the way

[@mikee130274]

@@Cookers2750 yes mate. I taped it above the probe with insulation tape to give me more depth. Then I taped it to my pipe that’s sucking the water out from the tub to the boiler.

[@kicsister]

Hi Mike Thank you for the video. I had a similar setup but with immersion heater and hose pipes but with that the boiler kept cutting off. After seeing your video, I got the Katsu 150W pump and got 15mm pipe with push fit connectors from the tub to the pump and the same 15mm pipe from pump to boiler. from the boiler I kept the hose pipe for now. Got it all connected but the pump is constantly switching on and off and now got to the point where the boiler dos not have a chance to heat the water at all. Do you have any idea what am I doing wrong?

[@mikee130274]

There’s a filter gause in the inlet of the boiler. Take that out. Also push the hose water in the inlet in tub to get it going first

[@kicsister]

@@mikee130274 Thank you for the speedy reply. My boiler came without the filter so I did not have to remove it. I just connected the inlet and outlet pipe (in my frustration I replaced the hosepipe too to 15mm pvc pipe) and while they are connected, the boiler started going properly as soon as I disconnected them (under water to not to get any air in it) the pump starts and stops again.

[@mikee130274]

@@kicsister try adjusting the dials. You need to get the flow rate correct to stop it cutting out. Also on a 150 you can’t run it to far or push to high to the boiler.

[@kicsister]

Water regulator dial is on max, gas regulator is almost on min. Tried playing with them and the boiler cuts off on any other setting. The pump is about a meter and half away from the tub and it is on the floor half a meter below the boiler.

[@mikee130274]

@@kicsister check all connections for air leaks

[@nadineroberts1472]

Hi Mikee, I'm thinking of setting up something like this. My question is about the chlorine or bromine in the water... that's ok to go through the water heater? Not an issue I suppose. No one talks about it. Thanks for the video ;)

[@mikee130274]

I’ve been running chlorine through it for 6 months now and no problem. I’d hazard a guess and will say it will shorten pump life. Boiler should be fine. Pump should really be brass. I just liked this pump. Time will tell. So far still running really well. I would be lost without it. Temperature loss is far to great without a boiler system like this. Rendering the lay z spa useless in winter to be honest.

[@nadineroberts1472]

@@mikee130274 Thank you so much for getting back to me. I feel better going ahead. I bought everything already, the spa is outside and I just set up the water heater. I will fill this the spa tomorrow and hope it all comes together :)

[@mikee130274]

@@nadineroberts1472 have you seen the 2nd version I done? Same but a bit neater kzbin.info/www/bejne/Z4ivgY2NfrCdnpY

[@nadineroberts1472]

@@mikee130274 no I will check tonight. By the way I've been running my tub water (with bromine) through the gas heater with no problems so I am happy for that 👍

[@paulburgess5739]

How long will a bottle of gas last I’m thinking about connecting it up to my existing hot tub, thermostat and hot tub circulation pump, but just disconnecting the existing hot tub 3 kW heater

[@mikee130274]

2 to 3 months

[@ChrisMayhew22]

How has the boiler held up with the chlorine? I just ordered one of these boilers to make my spa cheaper to run.

[@mikee130274]

It’s absolutely fine. Still running buddy

[@ChrisMayhew22]

@@mikee130274 great to hear! Can’t wait to get it setup

[@salmonninja7223]

Hi Mikee, I've got a hot tub with a built in heater and pump etc. We are going down this route to heat the water as it is on an off grid site with solar power so we're trying to save on the hot tub using so much battery power. Couple of quick questions. Firstly do I need another pump in addition to the hot tub pump? Secondly, does it matter where I tap the inflow and outflow to the hot tub pipes? Ours is a plastic hot tub with jet inlets so I'm presuming as long as the water is coming in and out it shouldn't matter? I'm going to keep the hot tub switched on and running. It's really just to stop the thermostat kicking in and using the heater on the tub so much. It would be great if you could point me in the right direction! cheers. David

[@mikee130274]

Hi David. You’re correct. You can have the in and out wherever you wish. Here’s a link to the pump I’m using. www.amazon.co.uk/dp/B01NATU1R9/ref=cm_sw_r_cp_awdb_imm_t1_zPM6Fb9AV2VA5

[@salmonninja7223]

@@mikee130274 Hey thanks for getting back Mike. That's great news. Always best to confirm with someone first before going in guns blazing! I'm going to have ours in economy mode which keeps the tub at 28 degrees when not in use. When we have guests it will just be a case of sticking the heater on for an hour or so. As the thermostats will only kick in the heater at 28 this will save on the batteries! It's not so much saving money for us as we're off grid and solar. It's the hot tub sapping my battery banks! If I heat the hot tub with a back up generator then that does cost a packet in diesel! This looks the best of both worlds as it is effectively a good back up too if the hot tub heater packs in. Thanks mate, really appreciate it 👍

[@CalMUK91]

I have a similar set up but having issues with my heater as its burning yellow. What regulator are you using?

[@mikee130274]

Propane Regulator, Hose & Clip Kit www.amazon.co.uk/dp/B002U1SVBM?ref=ppx_pop_mob_ap_share

[@CalMUK91]

@@mikee130274 thats literally the same as I have. I wonder if I have a bad regulator. Honestly the flames are licking out the top of the boiler if I turn it past half way

[@mikee130274]

@@CalMUK91 so you’re letting to much gas through?

[@CalMUK91]

@@mikee130274 no even on low flame the flame is very rich and yellow. I will swap regulators. This new reg off Amazon looks fake as Go Outdoors sell the same one yet they look different.

[@mikee130274]

@@CalMUK91 let me know how you get on.

[@Ehiz180]

Set up like for like using a 10l boiler and Katsu pump. Is it normal for the pump to surge rather than be on constantly. I have tested the pump on open water and it flows fine. When connected to the boiler it seems to be restricted. Output flow seems okay.

[@mikee130274]

Take out the little filter in the boiler. Also set the flow rate until it stops surging. It’ll be one of the two things.

[@Ehiz180]

@@mikee130274 Thanks i did check the gauze, cleaning it then removing it. TBH i didnt notice any difference still surging. I am presuming when you talk about flow, this is the flow on the boiler. I set up gas low and flow at starting at 7 far left working it up towards 12 but again pump didnt seem to change.

[@mikee130274]

@@Ehiz180 put a hose pipe up the intake to get the pump to flow. Do this all in position. My pump used to keep cutting in and out but I moved the flow dial slowly until it stopped cutting out. Also you don’t want the boiler to high and pipes to long from tub.

[@Ehiz180]

​@@mikee130274 thanks will give it a go in the morning and feed back how it goes. Will be something simple im sure. Pipes in and out are about 2m. 1inch - 22mm - 15mm reducer soldered. Structured hose using garden hose connectors ptf on fittings external thread with rubber washers internal. Theory there shouldnt be any air induction

[@Ehiz180]

Update - Pump was over delivering on 15mm dia and under 2m draw pump to tub. Using a hose control valve obtained from a pole brush I was able to restrict the flow almost by 3/4. This now keeps the pump constant. Gas low delivery flow (boiler) at max temp output is between 45 and 50 deg with good flow. Tub reaches temp from a standing temp of mid 20s to 38deg in a little under 2hrs.

[@Mr1968taylor]

Hi Mike. What size pipe does the pump intake take. And where did you get them from. Great idea.

[@mikee130274]

1 inch mate stepping down to 22 Then to 15. Bought from B and Q

[@richp516]

I am looking at doing this, do you think it would be possible to go through the egg with the pipework, making extra holes in it? Great idea by the way going on to gas :)

[@mikee130274]

I thought about it but I came to the conclusion that you would being running the pump dry when hydrojets on.

[@richp516]

I was thinking if it were possible to put the pipework through the egg bypassing the pump and heater and just use the bubbles i suppose it could cause errors and the constant beeping.

[@mikee130274]

@@richp516 yes you can do that. Use a T piece section to do it. Just use the egg for the air bubbles

[@richp516]

Spot on, my heater arrived yesterday so just got to get all the other bits.

[@mikee130274]

@@richp516 sweet. Good luck mate. Make sure you share your setup 👍

[@alastairloudon1020]

Is it the pump that it is connected to the smart switch ?

[@mikee130274]

Yes. It’s wired into the sonoff

[@zeroiczac1495]

Hi, got a similar setup but 12litre model, wasn’t working right at first, just realised mine has a little wire filter in the water intake. Was totally blocked. Did urs have this? If so did u keep it in ? I’m guessing this is handy to stop gunk going through the system. I wish I’d seen it sooner. System just kept turning off where not enough water flow. Also what temp do you set ur boiler up at ??

[@mikee130274]

Yes I removed my filter. I put a stocking over my intake in the tub. I set my boiler at 50/50

[@rickim102]

Was the 12L adequate?

[@paulburgess5739]

Are you still running your hottub this way

[@mikee130274]

Yes

[@debbiehood1820]

Have a 12l boiler and a draper submersible running on garden hose but boiler keeps cutting out once water is above 25degress. Pump still running. Have to switch boiler off and back on. The boiler then runs for a couple of minutes and then cuts out seems like it's overheating won't run at all on winter setting can you help please

[@mikee130274]

There’s a little Filter in them. Take that out. Where the pipe goes in. Some do cut of after 20 minutes but mine never did.

[@debbiehood1820]

@@mikee130274 thanks will try.

[@debbiehood1820]

Do you keep the pump/boiler running when your in the tub

[@mikee130274]

@@debbiehood1820 I have my boiler on a sonoff plug with a temperature sensor. So it automatically cuts in and out

[@TheMarkcage]

Could you list what else would I need apart from the boiler and pipes? What are those pumps on the bottom and how does it know to initiate? Total newbie here

[@mikee130274]

It’s a KATSU® automatic self-priming pump. It initiates when I turn the smart plug on using my phone. Then the sonoff and probe will keep it at the required temperature. I set the range I want. For example. If I want to have the tub at 38c I put in 38.5c for off and 38c for on. This will keep it in that half a degree by itself. Then when you’ve finished your spa session. Turn your smart plug off. Next time you want to use it all you have to do is turn your smart plug back on. Those settings are held so it will automatically go back to 38.5

[@TheMarkcage]

mikee130274 thank you very much!

[@TheMarkcage]

mikee130274 one last question, do you remember what wattage is your KATSU pump as I can see there are many model from 130W to 800W?

[@mikee130274]

Mark Sadlo it’s the 180 watt. You don’t want more than that as your saving on electric. They’re out of stock at the moment but wait for one to come in stock. Great pump

[@TheMarkcage]

mikee130274 thanks, I literally couldn’t find it anywhere so I will indeed have to wait. Is it true that boiler has safety cut off and turns itself off after 20 minutes and if yes how do you deal with it?

[@stevenmcmullan8070]

Hi what water pump would I need thanks

[@mikee130274]

Read the comments buddy. It’s all there

[@paulburgess5739]

Thinking about doing this on my hottub

[@jamesrevill2188]

Hi there , you put a link up for the pump but only can only see 120W not 180W will this be ok ? Thanks

[@mikee130274]

www.ebay.co.uk/itm/KATSU-Full-Automatic-Self-Priming-Water-Booster-Pump-150W-/124651349750?_trksid=p2349624.m46890.l49286

[@mikee130274]

I now have a 150 watt pump

[@jamesrevill2188]

Why did you change it ? , would it matter if I used the 120w as the eBay one is out of stock ?

[@mikee130274]

@@jamesrevill2188 I let my 180w pump freeze and it cracked it. That day was minus 8 and minus 1 in the day. Forgot to turn timer on 🤦‍♂️ 120w won’t be man enough

[@glennwalsh8036]

Hi, Do you have a link to what connector you've actually used to come out\in the boiler please ?

[@mikee130274]

1 inch connectors. We used fast fit connectors

[@glennwalsh8036]

Great thanks

[@mako1134]

Hi Mike what water pump is that you are using with the iPhone app option

[@mikee130274]

This one mate www.amazon.co.uk/KATSU%C2%AE-Automatic-Priming-Water-Booster/dp/B01NATU1R9

[@mikee130274]

That’s just the pump. The app is using a sonoff

[@kleinandi]

Hi Mikee I have one Problem with the Heater. Higher Waterlevel makes more temperature? Is that right?

[@mikee130274]

I don’t understand mate. The temperature will be whatever you set it at

[@kleinandi]

@@mikee130274 The heater only works in middle of the Waterlevel (right Button) and then its over 60 degrees . Gas level is down

[@mikee130274]

@@kleinandi you only want 55 to 58 degrees going back in the tub. Do you have a temperature probe in tub

[@kleinandi]

Problem solved. i dont get enough water to the heater so the temperature cant be lower

[@richardskeggs3726]

Hi as your running on propane how do you get round the problem thatthese heaters are rated 28mbar and propane is 37mbar ?? what regulator are you using , is it a screw on 37mbar propane one , thx

[@mikee130274]

This is what I’ve been using Richard. Propane Regulator, Hose & Clip Kit www.amazon.co.uk/dp/B002U1SVBM?ref=ppx_pop_mob_ap_share Do you think that’s a problem then? I’ve had none so far

[@richardskeggs3726]

@@mikee130274 hi thanks for that , that boiler is the same I just got , 18ltr , so i think i was over thinking the whole thing, I should of got a 47kg propane , so much cheaper, ok do these boilers are rated 28mbar but must have a built in valve hence why the 37mbar propane hasn't affected it , bugger I need to switch from butane to propane as it's way cheaper around £65 for 47kg where butane is £38 for 15kg , thanks for this info, Rich

[@richardskeggs3726]

Ok do I'm going to change to propane so that link is definately the regulater your using , thx in advance

[@mikee130274]

@@richardskeggs3726 that’s one hundred percent the regulator I’m using on my 47kg bottle. I got the link from my previous orders from Amazon.

[@richardskeggs3726]

@@mikee130274 thanks much appreciated

[@samsmith1182]

Hi Mike, what's cost over winter months, cheers

[@mikee130274]

47kg bottle lasted me 4 and a half months. £65 I still use my electric to maintain to 35c I don’t use the gas so I can stay in it for hours lol. Heat whilst having bubbles and jets now.

[@pauldand4417]

Why would you not convert the PVC pipe to fit the existing input and output”

[@mikee130274]

Because you would draw away from the lay spa pump itself. I thought about this but it would lead to a failure of the pump supplying the hydro jets

[@oliverross8788]

@@mikee130274 hey! Why would it lead to failure I have a Colman was thinking of doing the same thing except I wanted to use the existing ports I would still be able to leave the air pump for the jets or bubbles hooked up!? Thanks

[@DanielChristian-bm7kj]

Hi Mikee, how can i contact you. i am the gas water heater factory in china. we can provide same gas water heater with good price and high quality.

[@ism414]

Hi Mike what water pump did you use??

[@mikee130274]

KATSU® Full Automatic Self... www.amazon.co.uk/dp/B01NATU1R9?ref=ppx_pop_mob_ap_share

[@rickim102]

I've been through these comments at least twice and can't find the heater that's used. Can anyone help please?

[@mikee130274]

www.ebay.co.uk/itm/402972257541?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=88jmnfbttxk&sssrc=2349624&ssuid=u4b7rSPyRYO&var=&widget_ver=artemis&media=COPY

[@rickim102]

Thank you!

[@davidholding5335]

How is this different than a hot water tap

[@mikee130274]

It doesn’t waste water as it’s circulating water from the tub?

[@davidholding5335]

@@mikee130274 yer I’m being thick being looking at so many option my mind is overloaded 😂😂

[@mikee130274]

@@davidholding5335 it’s not that complicated mate. Join the group as there’s lots of lpg setups on there now

[@davidholding5335]

Which group bud

[@mikee130274]

@@davidholding5335 lay z spa selfies

[@zsoltk8777]

The boiler is about 20KW...

[@craiginnes-grant4004]

Pm me pls

[@mikee130274]

Why. Talk here

[@craiginnes-grant4004]

@@mikee130274 how much did serup cost pls

[@mikee130274]

@@craiginnes-grant4004 about £300. No more than 350

[@craiginnes-grant4004]

@@mikee130274 mike are u in east sussex and set it up for me not tech savy at all

[@mikee130274]

@@craiginnes-grant4004 do you have Facebook mate? If so go add yourself to lay z spa selfies.