Back boiler. Stiff nipple screw?!

[FrancisJK]

Rads get too hot to touch.

Francis

[Set Square]

In that case, they're *probably* hotter than 70 degrees. How are you measuring flow temperature?

[FrancisJK]

Ok. I now have a new battery for my digital multimeter.

Got thermal paste for the boiler thermostat suppository thingy.

Took temp at suppository with DMM. Goes to 82 deg C before burner cuts out.

Tested flow at site where overheat thermostat is, 77 deg C.

Have drained system and added Fernox cleaner. Running now.

Francis

[The Natural Philosopher]

Back boiler? Stiff Nipple? SCREW!!!

[FrancisJK]

Fernox cleaner in system now.

Flow up to about 80 deg C. Return about 70 deg C

Francis

[FrancisJK]

No thermostatic mixing valve then?

Francis

[raden]

In message , The Natural Philosopher writes

Give that man a cold shower

[raden]

In message , FrancisJK writes

Another DIMM installation

[FrancisJK]

Tuesday, 24 August.

Gonna run system with cleanser until Saturday and then flush and refill.

I'll post an update next week.

Francis