Checking my Eber

andy198712 · Posted: Fri Jan 18, 2013 3:21 pm Post subject:

so after a couple years of happy use! thanks to the forum Smile

i would love to have the temp regulator so i can just turn it on, set my temp ish and leave it on instead of having to keep turning it on and off....

what would i need? just the sensor? or any kind of thermostat that would break the circuit at X a selected temp?
_________________

andy198712 · Posted: Sat Dec 06, 2014 11:45 am Post subject:

had a lot of welding work done on the bug, and its been off the road a good 12 months plus, not just refitted the eber today, need to plumb and wire it back in, this page was helpful hopefully sort it monday!

The temp switch is proving hard to find! i'm tempted to find a small digi one on ebay or the like, then use that to make or break the blue wires of the temp switch on the Eber right?

Thanks Smile

_________________

Semper_Dad · Posted: Sat Dec 06, 2014 6:06 pm Post subject:

andy198712 · Posted: Sun Dec 07, 2014 1:18 am Post subject:

That's a cool little display, fits in well! Seen a couple on eBay, mostly from Hong Kong it seems and cheap so worth a shot!
_________________

Captain Spalding · Posted: Sun Dec 07, 2014 12:04 pm Post subject:

I'm confused. Is it the timer switch you need or the temperature regulating switch?

andy198712 · Posted: Mon Dec 08, 2014 3:43 am Post subject:

Captain Spalding · Posted: Mon Dec 08, 2014 11:43 am Post subject:

Yes, the blue wires.

Have a look at this 12 volt temperature controller. You may be able to get it to work.

http://www.thermomart.com/index.php?route=product/product&product_id=149

But you may be opening a huge can of worms.

andy198712 · Posted: Tue Dec 09, 2014 2:03 pm Post subject:

andy198712 · Posted: Thu Dec 11, 2014 11:33 am Post subject:

Finished wiring it in today and its lovely to have heat again!

i tested the pump off the car with a battery and got it clicking nicely, so when i connected it to my small bore fuel line (from a model shop, although check the line is safe for petrol and not just nitro) it started on the first go and ran beautifully!

i got the power wired into a permanent live (so it can do its cool down)
and the switch wired to ignition live.

as mines a BN4 i have it ducted to a hole i cut in the footwell between the driver and passenger, using silver foil style ducting. but its a bodge at best and not sealing well, so i'm thinking of making a step down adapter to fit on the outlet of the heater, and route that to a dash grill maybe.... the ones by the speedo.

any thoughts on that?

cheers Smile

_________________

Captain Spalding · Posted: Thu Dec 11, 2014 12:37 pm Post subject:

There's more to it than just getting the heater to turn on and off. How are you regulating the temperature?

mondshine · Posted: Thu Dec 11, 2014 3:22 pm Post subject:

This is how I did it in a '71 Super Beetle when it was my daily driver for a few years:

Image may have been reduced in size. Click image to view fullscreen.

The big black box is a 7 day timer which would allow up to 3 on and off events per day. I think the run time (when automatically switched on) was 45 minutes.
The timer was actually manufactured by Hella.
The knob to the left of the timer was an off-on linear potentiometer which controlled a little electronic thermostat mounted in the trunk. The little black blip poking through the grille above the timer is the actual temperature sensor (thermistor) wired to the thermostat.

http://www.apogeekits.com/electronic-kits-intermediate/thermostat.htm

The heater was a BN2 which, unlike the BN4, has no thermostatic control of its own; it is simply on or off.

When I retired, and no longer needed the timer, I switched the IP to this:

The off-on potentiometer was used to trigger a relay to run the heater.
The thermistor (temp sensor) is now its natural blue color.

That car also had a key fob remote to start the heater, which was probably more practical than the timer, just because I could warm up the car at any time without going outside.

That was a cool car, if I was Jay Leno, I would still have it.

Captain Spalding · Posted: Thu Dec 11, 2014 10:17 pm Post subject:

Mondshine that's pretty slick. The question I have for you, and for Andy, is how do you calibrate it? With the BN-4 heater regulator switch, you calibrate on and off set points by measuring the temperature at the heater input and output ducts. If left uncalibrated, what's to prevent the BN-4 from overheating and popping the safety fuse?

mondshine · Posted: Fri Dec 12, 2014 7:34 am Post subject:

Captain-
I don't know the answer to your question. The only adjustment I ever made was the fuel mixture. I don't think the heater ever ran continuously for over an hour, because the car warmed up pretty quickly, and the thermostat would switch the heater off.
This BN2 was not a standard unit. It came from the personal stash of the great Ark Mirvis (aka "The Heaterman"). It had electronic controls for fuel and ignition, a combination glow/spark plug, and used a standard automotive coil. Photo:

The fuel and ignition control modules can be seen just below the ignition coil. Inside the white circle (on the fuel control module) was a small hole revealing a screw head potentiometer to adjust fuel mixture.

I consider Ark Mirvis to be one of the world's foremost authorities on Eberspacher and SW heaters.
I actually visited him once when he lived in Hopatcong, NJ. Unfortunately, he moved back to Europe many years ago, and seems to have disappeared. I have searched for "the lost Ark" without success.
All I have left of that car, that heater, and "The Heaterman" are fond memories.
Good luck, Mondshine

andy198712 · Posted: Thu Dec 18, 2014 9:49 am Post subject:

andy198712 · Posted: Thu Dec 18, 2014 9:52 am Post subject:

andy198712 · Posted: Thu Dec 18, 2014 9:53 am Post subject:

andy198712 · Posted: Thu Dec 18, 2014 9:55 am Post subject:

mondshine · Posted: Thu Dec 18, 2014 11:32 am Post subject:


Hello! Log in or Register \| Help \| Donate \| Buy Shirts	See all banner ads \| Advertise on TheSamba.com

	Forum Index -> Thing/Type 181	All times are Mountain Standard Time/Pacific Daylight Savings Time Page: Previous 1, 2, 3 Next
Page 2 of 3