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Author Topic: Boost heater  (Read 1760 times)

Offline johnnyroper

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  • Posts: 2948
  • Thanked: 148
  • Model: Galaxy Mk2
  • Spec: 02 tdi 115 ghia
  • Region: South West
  • Country: United Kingdom
Boost heater
« on: November 17, 2016, 06:07:00 PM »
Not a problem with it just a question out of curosity.

Does anyone know if the glow plug is energised the whole time heater is running or is it to just initially fire it?

On the trains we use eberspacher and webasto hydronic heaters that are fired by electrodes but once the flame sensor detects flame turns electrodes off and it just keeps flaming. I am just wondering if the glow plug functions the same?

Offline insanitybeard

  • Greetings from Mr Chick!
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  • Posts: 2427
  • Thanked: 71
  • Model: Galaxy Mk2
  • Spec: '54 130ps TDI Ghia
  • First Name: Paul
  • Region: South West
  • Country: United Kingdom
Re: Boost heater
« Reply #1 on: November 17, 2016, 06:59:24 PM »
I don't know this as fact but as it's a diesel burner running off of a low pressure fuel supply and not using compression to ignite the fuel I would think that the glow plug would have to remain energised for the entire period that the unit is operating.
Always learning..... Often by mistakes!

Offline joka

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  • Posts: 16
  • Thanked: 3
  • Model: Sharan Mk2
  • Spec: 2.0 TDi
  • Region: Non UK
  • Country: Norway
Re: Boost heater
« Reply #2 on: November 17, 2016, 07:02:55 PM »
https://www.eberspaecher-na.com/fileadmin/data/countrysites/EB_Kanada/pdf/Hydronic_D5S-SC_Diagnostic___Repair_Manual_2013.pdf

a. The fan provide air flow through the combustion chamber and the starting air hole
b. The glow pin heats the atomizer chamber in preparation for fuel.
c. Fuel first enters the atomizer hole.
d. It is then atomized and ignites.
e. The flame burns through the combustion chamber.
f. The flame detector recognizes a temperature rise and cuts operation of the glow pin.
g. The control unit measures the input and output coolant temperature via a coolant temperature sensors inserted in the coolant flow of the water jacket. This is important to know because the heater can monitor the tempera- ture difference to validate proper coolant  ow. In the case of overheat codes refer to the appropriate codes.
h. The unit switches between full load, part load and standby automatically given the coolant temperatures.
i. When it first ignites it is always in boost.
ii. Mode is controlled via fuel pump frequency and fan speed.
06 VW Sharan 2.0 TDI Highline Exclusive Edition in Island Gray Pearl LK7X/C9

Offline johnnyroper

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  • Posts: 2948
  • Thanked: 148
  • Model: Galaxy Mk2
  • Spec: 02 tdi 115 ghia
  • Region: South West
  • Country: United Kingdom
Re: Boost heater
« Reply #3 on: November 17, 2016, 07:22:01 PM »
Cheers for that,confirms what I suspected may be the case.

 

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