hsi vs direct spark ignition

[robhvac]

what type of ignition is more common in a residential furnace hot surface ignition or direct spark ignition and which one is better?

[Diceman]

A pilot light with a thermocouple.

[mike3]

Originally posted by robhvac
what type of ignition is more common in a residential furnace hot surface ignition or direct spark ignition and which one is better?

Whens the last time you saw a direct spark.. I can only think of the old Sears furnace at the moment..Please jog my memory

[hvacguy1075]

Originally posted by mike3

Originally posted by robhvac
what type of ignition is more common in a residential furnace hot surface ignition or direct spark ignition and which one is better?

Whens the last time you saw a direct spark.. I can only think of the old Sears furnace at the moment..Please jog my memory

yesterday worked on carrier with spark ignition

[mike3]

Originally posted by hvacguy1075

Originally posted by mike3

Originally posted by robhvac
what type of ignition is more common in a residential furnace hot surface ignition or direct spark ignition and which one is better?

Whens the last time you saw a direct spark.. I can only think of the old Sears furnace at the moment..Please jog my memory

yesterday worked on carrier with spark ignition

Not spark to light pilot...Direct spark to light burner

[markco]

Originally posted by mike3

Originally posted by robhvac
what type of ignition is more common in a residential furnace hot surface ignition or direct spark ignition and which one is better?

Whens the last time you saw a direct spark.. I can only think of the old Sears furnace at the moment..Please jog my memory Ahh...Rheem??

[mike3]

Originally posted by markco

Originally posted by mike3

Originally posted by robhvac
what type of ignition is more common in a residential furnace hot surface ignition or direct spark ignition and which one is better?

Whens the last time you saw a direct spark.. I can only think of the old Sears furnace at the moment..Please jog my memory Ahh...Rheem??

Rheem direct spark..how old

[markco]

Rheem direct spark..how old [/B][/QUOTE]Worked for a Rheem dealer last year, still had the direct spark ignition.

[hvacguy1075]

Originally posted by mike3

Originally posted by hvacguy1075

Originally posted by mike3

Originally posted by robhvac
what type of ignition is more common in a residential furnace hot surface ignition or direct spark ignition and which one is better?

Whens the last time you saw a direct spark.. I can only think of the old Sears furnace at the moment..Please jog my memory

yesterday worked on carrier with spark ignition

Not spark to light pilot...Direct spark to light burner
didnt read your reply properly. it wasnt direct spark it had pilot assembly. ( geeeeeeee what was i thinking )

[markco]

http://216.122.22.11/FetchDocument.aspx?ID=7d80719c-d396-4693-afe2-364f885649b9

[Edited by markco on 03-12-2006 at 10:40 PM]

[mike3]

Originally posted by markco
http://216.122.22.11/FetchDocument.aspx?ID=7d80719c-d396-4693-afe2-364f885649b9

[Edited by markco on 03-12-2006 at 10:40 PM]



Now thats what I was looking for....thanx

However I wouldn't have said

Ahh Rheem to someone

[t527ed]

lennox used direct spark on the g24 units , cranky pita units if not just right. sure-light ignition much better.

[mike3]

Originally posted by robhvac
what type of ignition is more common in a residential furnace hot surface ignition or direct spark ignition and which one is better?

After all our rambling we never answered your question.
Personaly I like HSI

[BaldLoonie]

From a biz standpoint, HSI causes more service calls and revenue from failed ignitors. But for me, I'd rather have DSI than an ignitor I know is going to fail sometime.

[t527ed]

normal hsi are a pita, however lennox sure light has been very reliable for us.

[robhvac]

so dsi is not used that much anymore?

[gruntly]

Originally posted by robhvac
so dsi is not used that much anymore?

HSI is getting better as time goes by.

Reznor RT direct MUA's have been using it for a while... Not exactly superdependable but works okay

And then there's this:

http://arnoldservice.com/nitride_module_only.jpg

I've used one on a real stubborn furnace 10 ceramics in 7 years due to falling debrit... One of these 2 years ago..haven't been back. (Regular customer, I look after his greenhouses, too)

Hoenywell's got the "Smart" valve.

http://www.hvactv.com/hvactv/new_site/images/screenshots/smartvalve.jpg

(Circuit boards on the valve kept breaking at the solder joints) which are mini HSI to pilot. They work okay. Stupid sensors need cleaning frequently.

[SeattlePioneer]

Economite gas conversion burners were pretty common around here because they were widely installed by the gas company to convert old oil furnaces to natural gas. Many of them had direct spark ignition, and it has been very reliable.

My own favorite is an intermittent pilot operated by a Honeywell ignition control. That's about the best of all, in my experience.

HSI is a great revenue source for repairmen.

There a lot to be said for pilot/thermocouple systems, too.

Now the ideal system would be a 90% efficient furnace in which you ripped out the HSI system and installed a nice Honeywell intermittent spark package or (just to bait the regulators) a nice standing pilot system in it.

I'd like to see an inspector looking in a 90% efficient unit and see a standing pilot light there....



Seattle Pioneer