happybuy diesel air heater

luvrbus · December 18, 2021, 04:28:31 AM

I sent a couple of those.units to people for Christmas. presents since I don't have enough time to fool with one.The 2 I sent the units are real sticklers and will find stuff the UL lab would miss,I am more interested to see if they work on gasoline with out burning down the RV

dtcerrato · December 18, 2021, 06:05:06 AM

I've seen air heaters in the past run on gasoline (67 VW van) but I know the fuel pump on the CDHs won't last long with gas, too thin a viscosity and not enough lubrication. Gas would be more dangerous too.

Dave5Cs · December 18, 2021, 10:52:15 AM

It was and still is 14 degrees here and LP furnace and electric heaters working good.

luvrbus · December 18, 2021, 12:58:07 PM

Quote from: dtcerrato on December 18, 2021, 06:05:06 AM
I've seen air heaters in the past run on gasoline (67 VW van) but I know the fuel pump on the CDHs won't last long with gas, too thin a viscosity and not enough lubrication. Gas would be more dangerous too.

They are advertising they run on both ? today's gasoline you can put a lighted match out in the stuff on a cold day,but I argree gasoline fumes could blow up,I still want to see one run on gasoline.I have seen a lot Espar use gasoline

dtcerrato · December 21, 2021, 06:48:42 PM

Both CD heaters completely installed and simultaneously run full blast for an hour. Holy moly all of interior cabin toasty similar to the two LP furnaces running but with a fraction of a cheaper fuel usage and battery drain and two large compartments are toasting also. The bus has become much more cold tolerant. Must be AK on my mind...

luvrbus · December 22, 2021, 06:40:14 AM

One person I sent a air heater too got his yesterday lol damn Dan I have ended up buying 3 I hope you are right

Van · December 22, 2021, 07:00:54 AM

Quote from: luvrbus on December 22, 2021, 06:40:14 AM
One person I sent a air heater too got his yesterday.

Thanks Clifford! I know we can put it to good use

.

Dave5Cs · December 22, 2021, 08:43:11 PM

LOL in Las Vegas?

luvrbus · December 23, 2021, 06:32:10 AM

Quote from: Dave5Cs on December 22, 2021, 08:43:11 PM
LOL in Las Vegas?

In the desert anything below 72 is coat and heaters time

lol we had a 28 degree morning last week it was cold

dtcerrato · December 23, 2021, 01:53:38 PM

I'm copying a post I made on the BGM that also fits this post as I have copied posts from the BCM to the BGM as CDHs are near & dear to our liking in extreme cold (where we haven't experimented with - yet!)........

Posting some photos at the request of a couple bus nuts actively installing CDHs.
The 1st heater we installed has the standard 75mm cool intake and 75mm heated outlet.
Both heaters installed have the fresh cool intake air ducted into the cabin area. Personal preference so not to pick up any "dirty" air from truck stops or rest areas. Just me. The 75mm heated supply duct splits in two with an in-line wye in the cabin - 1/2 to bath (makes for a toasty shower & throne)

& 1/2 to living room.
The 2nd heater we installed has 75mm cool intake and four 42mm heated outlets.
Photos show before & after protective sheet metal to protect the install from adjacent storage.

More photos to follow on my next post.

dtcerrato · 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

Van · December 24, 2021, 07:41:57 AM

Good reports, all of them. As I start the planning for a mounting location the question of noise levels crossed my mind. Anyone care to share their experience on the blower DB levels or has it been so minimal to not be a factor? Thx

edvanland · December 24, 2021, 09:01:38 AM

Van, the one I put in our bus in the middle bay on left hand side I cn barely hear in side.

dtcerrato · December 24, 2021, 09:31:35 AM

Absolutely no noise factor here. The combustion chamber outside exhaust can be heard when out side but no more that the LP forced air furnace. Overall very quiet from inside the cabin area as ours are mounted on the bottom compartment floor. Literally no inside duct register noise.

buswarrior · December 24, 2021, 10:03:35 AM

Only noise a bunk heater makes that is objectionable will be the fuel pump, if it is one that ticks, when throttled back.

Be sure it is well isolated, don't bolt it up to some structural piece and become a drum...

Happy coaching!
Buswarrior