P/Ton Netaheat / Kingfisher MF

Soggy_weetabix · 23 Nov 2006

Reverse polartity allows the boiler to fire and not rectify as you guys all know.

But how?

I am no electrics expert and would love an explanation.

Thanks,

Dave

kevplumb · 23 Nov 2006

1/2 wave rectifier

Soggy_weetabix · 23 Nov 2006

Thanks for the reply kev.

Can you explain further?

I dont have the knowledge you have.

David

kevplumb · 23 Nov 2006

the electronics work on dc
1/2 wave rec only rectifys the first 1/2 of the sine wave on ac
so the board sees it as reverse polarity
if the cheapskate mans used a full wave rectifier it wouldnt matter

Soggy_weetabix · 23 Nov 2006

Thanks kev.

Appereciate your help.

David.

Where is agile by the way?...oh another topic another day. Forget that.

Thanks again kev

bster · 23 Nov 2006

so does this boiler work with reverse polarity then?

kevplumb · 23 Nov 2006

errrrr no

bster · 23 Nov 2006

I thought flame rectification was a ssytem that allowed the main gas valve to open? - Soggy said that it would fire even though there was no rectification

kevplumb · 23 Nov 2006

it might fire it won't stay on the electronics can't sense the flame

bster · 23 Nov 2006

so if it only senses half a wave, if its reversed, the wave is upside down so it senses a fault?

Do some boilers work with polarity reversed?

forgive my lack of brians on this subject

kevplumb · 23 Nov 2006

Do some boilers work with polarity reversed?

yes it depends on the flame sensing system and the quality of the appliance

bster · 23 Nov 2006

and the first enquiry on my above post?

kevplumb · 23 Nov 2006

bster said:
and the first enquiry on my above post?

then the answer to that is NO as per my answer to your last post

it depends on the appliance they used to use flame conduction on the heavy side but stopped it

wanna tell me why

bster · 23 Nov 2006

bster is lost

if reversed polarity - the pcb receives an upside down wave (as it is a 1\2 rectified system) and hence senses a fault?

apoligies if i'm annoying you! - your only one of many today

BoxBasher · 23 Nov 2006

raden said:
householders be scared, be very scared

- the GOSK are here

Whats wrong with Bster asking Q's? Looking at his sig he's an apprentice. Surely asking Q's is a good thing? Its called learning, its what apprentices do.

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P/Ton Netaheat / Kingfisher MF

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