oil boiler photocell problem

[darrochdog]

I have a wonky photocell on my elderly Myson Velaire oil boiler.

The photocell is now obsolete, without a direct replacement. However, the control box does have a direct replacement and a compatible photocell.

Should I try the new control box and photocell, or, as my boiler man says, replace the entire burner unit?

The output efficiency is about 90%, so I don't want to throw out the entire boiler - however, I am not happy about spending £500 on replacing part of a very elderly boiler, when it may pack in entirely sometime soon.

 

[Burnerman]

Personally I'd go for a new photocell and compatible control box - if that is definitely the problem and everything else is ok.
John

 

[oilhead]

What photocell is to be replaced? If it is a Danfoss LD, then The current danfoss LDS usually works with the old BHO box. If you need an LD, then contact me through the forum, I have some unused.

 

[darrochdog]

Thanks, guys.

The photocell is a Satronic, and I have checked with Satronic Honeywell that it is obsolete and has no direct replacement. Its successor requires a different control box for compatibility.

 

[oilhead]

Presumably you have a satronic TF801 or 802 box which used a FZ cell. 1st try is a MZ cell, there are plenty of burners with this combination running. If it is too sensitive and picks up the spark, just turn it 90 degrees.

 

[oilhead]

Looking in my box today, if you need a FZ711 photocell, contact me through the forum.

 

[darrochdog]

Oilhead, old chap, that's one hell of a box you have there. Yes, it is an FZ711 photocell, and I would love to have it, if that is possible. My e-mail is [email protected]

The FZ that I have has a lead that is moulded onto the cell. Is yours the same?