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Jmcdonall
New Member

Canada
2 Posts

Posted - 02/26/2019 :  12:40:05 PM  Show Profile  Reply with Quote
Can anyone tell me the purpose of a websto heater in a schoolbus and when I would use it?

bedfordone
Active Member

USA
42 Posts

Posted - 02/28/2019 :  10:08:30 AM  Show Profile  Reply with Quote
Webasto heaters are used to pre-heat the coolant in the engine block so start up and warm up are achieved quicker with easier starts. They have a timer usually in the control panel that you can set up to start the heater typically about 20 minutes prior to the driver coming in. I hope this helps and being in Canada I think it would.

Brian

Brian Prochazka
Bedford City Schools
Transportation Specialist
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muddywater
Active Member

USA
33 Posts

Posted - 02/28/2019 :  3:31:38 PM  Show Profile  Send muddywater a Yahoo! Message  Reply with Quote
Bedfordone is correct.
We also use them to supplement the heaters, while going down the road on those long and cold activity trips.
The only other thing, all our Webasto heaters are diesel fueled. The fuel is drawn out of the vehicles fuel tank. I don't known if there is a gasoline fueled "Webasto" type coolant heater on the market.
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Jmcdonall
New Member

Canada
2 Posts

Posted - 03/01/2019 :  12:00:18 PM  Show Profile  Reply with Quote
Thank you. Itís very cold here right now, so I will give it a try. #129322;

Get 'em there safely!
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Bluenozer
Senior Member

Canada
165 Posts

Posted - 03/28/2019 :  03:52:16 AM  Show Profile  Reply with Quote
really only heui engines needs these
common rail starts alot easier in cold weather
@muddywater wouldn't the temperature sensors in the heater shut the heater off due to the coolant being up to temp. (or it should if working right) and yes they make gasoline ones

OEM trained in wiring and all engine platforms for 20 years
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muddywater
Active Member

USA
33 Posts

Posted - 03/28/2019 :  06:12:57 AM  Show Profile  Send muddywater a Yahoo! Message  Reply with Quote
Bluenozer is correct, they are internally temp controlled, and will cycle. Our observation and feed back from student is they do work well at boosting interior comfort level with out creating any cooling issues on the engine on cold long winter trips. Our bus heaters (registers) are all set up on the "in series" configuration, I learned back in 2003 with a RE Thomas 65 passenger bus, they are plumbed from the factory with "parallel" plumped heaters (registers) and the front of the bus was always cold. Re-plumbed the bus heaters (registers) to bring all the heat to the front of the bus first with the Webasto's help heating and pushing the water, that corrected the cold problem in the front the bus.
Thanks Bluenozer I didn't know that there is this type heaters available running on gasoline.
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