Search results

Procedure may not be up to date. He should get an up to date copy immediately as there are some important changes which he will need to be aware of whenever he takes his exam.

If what you're saying is that you have to re-pressurise the boiler every couple of days then there is a serious problem, possibly underfloor leak. Check the safety pipe to outside (comes from opening on front right hand side of bottom of boiler), and see if there is any water coming out...

If he's about to take the test he should either have or have access to a copy of the CORGI 'essential gas safety' manual. If he is serious about doing what he does then he should certainly OWN an up to date one. In this manual he will find the correct generic procedures for absolutely...

Agreed

I'm sure the Puma has a TC interrupter, so could cut out pilot if overheated. Maybe one of the Potterton guys could confirm this but I think its right. Thermocouple should maybe be changed anyway if its a few years old. also check the pilot assembly for blockages. The problem you are...

Heateam have some sort of insurance. They're Potterton.

I had a Glow worm 30ci not firing, no fan on but pump turning. When aps made it fired. Fan not jammed & resistance was OK according to Glow worm and was getting 240 volts into it but not working, fan worked when put on flylead direct to mains, however not when pcb driven. All wiring continuity...

Don't like to attach the boiler to systems full of sludge & magnetite. I pipe up to the boiler, remove the flow & return tails, and attach powerflush machine from right underneath the boiler. I then powerflush before physically connecting boiler once procedure is done. Besides, then one has...

Hi all, got a problem with powerflushing. I had a customer who I installed a boiler for & powerflsuhed come back to me some months after complaining that he had bled a rad and a load of black water came out. I assured him it was just a small amount at the top of the radiator and nothing to...

If changing pump I'd reccomend changing diverter too, I've been to a few and changed one or other, only to find that a few weeks later that the other has failed!

Can't remember exact value. Maybe 3.5-5.5k room temp.

Why? If the pressure gets to AT or above 3 bar then the PRV activates. If it it dripping then the PRV has activated correctly.

Expansion vessel. Do a search and you will see how to fix. changing the PRV would probably have been neccessary anyway so dont beat urself up about it...

No, dont do that. Measure the resistance between terminals with a multimeter. Also check for voltage across the terminals of ntc...

Fan venturi

Sorry Mr Agile, I did remove & test both NTC's at room temp & in 60 degree water. Both seemed OK giving same resistances. Voltage being applied to gas valve doesn't alter unless control knobs on front are turned. The small screw on the gas valve doesn't have any effect on this model...

Halstead ace igniting on DHW mode getting to full gas, then not modulating down from the gas rate it is at (water 9.5mb, ch 5mb). Cutting out once it gets too hot. Both Ntc's ok at room temp & at approx 60 degrees. All major components ok (pump, fan, etc gas valve resistance seems ok)...

Hi all Other than Sunvic, does anyone know of any manufacturers making non-spring return motorised valves? Cheers

1 bar cold pressure is OK. When water is heated it expands and in a sealed system this means that the pressure rises. 2.3 bar is quite high but not presently a real problem, the expansion vessel is probably undercharged. Do a search on this forum for expansion vessels and you can...

He's a very rich investment banker who, after I explained what the pressure reducing valve was and did, and that there was an (unrelated) problem related to the pressure in the vessel, said just to replace the lot! I'm not going to argue with him, its in my interest to change these parts as...