happybuy diesel air heater

chessie4905 · December 24, 2021, 11:58:39 AM

I've got some thin sheet lead left over from chimney flashing, so I'll wrap the pump loosely in some and see how that works out.

Van · December 24, 2021, 01:02:43 PM

Good enough for me. Heres an interesting approach to the fuel pump tic tic, the things ya find on U-Tube,
https://youtu.be/rP3FOPqtINg

dtcerrato · December 24, 2021, 04:43:06 PM

Check out this Vevor special offer on a CDH, cheapest I've seen one of these sell! AND It's their own website! Getting up in the world!

Jim Blackwood · December 24, 2021, 05:30:54 PM

That sounds like a heck of a deal. Has anyone bought one yet?

Jim

dtcerrato · December 24, 2021, 05:43:50 PM

I have four, two are Vevor's but not this special.

luvrbus · December 24, 2021, 06:40:27 PM

Quote from: dtcerrato on December 24, 2021, 05:43:50 PM
I have four, two are Vevor's but not this special.

I bought 2 for presents they gave me remotes and tanks too,did yours have the remote and tank Van,I haven't opened the box since it is gift

dtcerrato · December 24, 2021, 07:04:07 PM

Quote from: Van on December 24, 2021, 01:02:43 PM
Good enough for me. Heres an interesting approach to the fuel pump tic tic, the things ya find on U-Tube,
https://youtu.be/rP3FOPqtINg

That's a nifty DIY set up. There are lots of gadgets on the market for quieting the fuel pump pulse. The video is where the pump is in close proximity to living space like a van. In our buses below in the floor of the bottom compartments they are barley heard. They sell neoprene jackets that completely impregnate the entire pump. Also available is a devise that absorbs the pulsed flow of fuel to keep the tiny nylon fuel line from "kicking". I'm not comfortable with the choice of fuel line in the video. Thanks for posting - interesting. I have installed a CO detector in the cabin but also just ordered a portable CO monitor that senses CO levels much quicker as most "detectors" on the market take up to 90 minutes to alarm small amounts of CO. FWIW.

Van · December 24, 2021, 08:10:21 PM

Quote from: luvrbus on December 24, 2021, 06:40:27 PM

I bought 2 for presents they gave me remotes and tanks too,did yours have the remote and tank Van,I haven't opened the box since it is gift

It did, a 10 liter tank with the wireless remote. No muffler but I doubt it would really be needed. Like dan I intend to mount it either in one of the bays or my choice which is in the front elec compartment. gonna need to measure the heat ducting so I can find extra for a longer run. I see 70mm and 60mm sizes available on amazon but will have to confirm the size I need. I can see now why this CDH is so popular because of its simplicity. Thanks again Clifford, can hardly wait to get this installed.

Glennman · December 24, 2021, 11:27:34 PM

Quote from: Van on December 24, 2021, 01:02:43 PM
Good enough for me. Heres an interesting approach to the fuel pump tic tic, the things ya find on U-Tube,
https://youtu.be/rP3FOPqtINg

Yep, a bit overkill. Plus, the pump is installed in a horizontal position, not like the recommended 30 degrees or so.

Glennman · December 24, 2021, 11:48:23 PM

Quote from: dtcerrato on December 23, 2021, 02:03:30 PM
Following photos are close ups of the multiple clean hot air ducts & the clean intake combustion air, fuel line, & hot exhaust line from the CDHs
Notice how the shortest duct flows hot(test) air to the base of the 19gal electric water heater.
And a close up of the clean intake air for combustion (larger black line) the hot exhaust gas from combustion chamber (the SS line) & the fuel line (smaller black line.
Notice how the fuel line exits the "HOT AREA" in the direction of the cool air in & away from the hot exhaust.
Then a general photo showing the intake air towards the front of the bus (right side) & exhaust towards the rear of the bus (left side) in the case the CDH is run while OTR. Notice the white heat shield over the exhaust - it warms the entire main engine fuel tank compartment so on a ridged night fuel supply stays warm. Got a similar set up on the other heater keeping the bottom of the wet compartment toasty so utilizing exhaust heat again...

Both heaters have individual remote controls with different transmitter frequencies that work till about 30' away. Both 15L fuel tanks are able to be filled from the main engine diesel tank by way of an aux. electric fuel pump and flexible fuel hose with a valve on the end. Sort of a miniature gas station pump hose. In mid 30s temps a 15L tank will run the CDH for a comfy cabin for approx. five days. HTH

Those are some very nice pics, and only added to my analysis paralysis. Instead of installing the muffler and exhaust pipe along the underside, could you simply run it straight down with only enough pipe (and no muffler) so that it blows straight down? then install only enough combustion air pipe so that they don't mix (?).

dtcerrato · December 25, 2021, 04:21:54 PM

My bad - the exhaust piping photo has been modified since the photo. Added a right angle past the muffler so both heater's combustion exhaust enter out the side of the bus so as not to have hot exhaust fumes trying to rise from under the bus. It is my intention to reclaim some of the exhaust heat to warm things like main engine fuel tank compartment and under the wet tank compartment - but just the heat emitted by the pipe with exhaust gas exiting out from under the bus. I would be real cautious about a straight downward exhaust pipe as there is probably enough heat especially over time to burn dry vegetation and more. Extremely Hot!

lostagain · December 30, 2021, 10:21:46 AM

Up here in Canada, there are Webastos and the like used on Market Place every day. I got a Thermotop C (17000 btu) for $500 not long ago. That is the ones used in trucks for engine pre heat and bunk heat. Cleaned/ serviced it. Like new now. A friend of mine got a bigger Espar for $300. Those are the real thing for a fraction of new price.