Bone dry condensate trap

[Nostrum]

Serviced an Isar on friday and when removing the trap it was bone dry, to the point where what came out was a fine dust. I serviced it last year and I always silicone grease the o rings and rubber pipe. This year it was as if the grease had been completely dried out.

Other than this everything was O.K, gas rate, FGA, working pressures, seals etc

I left it running as the condensate terminates externally once filling up the trap again, when running it was pluming, but not a great deal.

A bit stumped... Anyone?

 

[REDSAW]

the sumps blocked!

toke pipe of and poke in the hole see whats there bucket in hand!
however, i trust you cleaned out the sump already when you serviced it?

 

[Nostrum]

Yeah it's not that, sump was cleaned last year and this time and no issues. The sump is also bone dry! It's as if it's stopped condensing.

 

[Millsy 82]

Partially blocked flue? Maybe enough that the pressure is building up enough to force the water out of the trap.

Cracked trap?

 

[Kevin D]

If the return temp is much above 60 they don't condense at all, if the rads are big enough to stand it drop the flow temp and balance them down if you think it will last long enough to warrant the time spent. Personally my stance with any modern Ideal is "If it ain't broke don't fix it".

 

[Nostrum]

If the return temp is much above 60 they don't condense at all, if the rads are big enough to stand it drop the flow temp and balance them down if you think it will last long enough to warrant the time spent. Personally my stance with any modern Ideal is "If it ain't broke don't fix it".

Can't understand why it would have changed though as nothing else has over the year.

 

[Nostrum]

Partially blocked flue? Maybe enough that the pressure is building up enough to force the water out of the trap.

Cracked trap?

All looked o.k, flue was fine. Going to phone ideal on this one.

 

[ed209]

It's got to be a blockage somewhere take the flue off as pour water down it

 

[gasmanrob]

I'm going to say the burner has a crack in it and it's burning hot drying out any moisture that should be present

 

[Nostrum]

Thats plausible, I'll take a closer look.