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Ah right....cheers pablo.

But there is no 'open' vent just feed......am I getting you correct? The expansion of hot water would just expand in system therfore causing overheating wouldn't it?

Went to a relatives today as she had a problem with her boiler, the boiler was cutting out intermittenly sometimes running for 1-2 days then she would re-set it but still same problem would occur, she moved into the house last year and there is no instructions for the boiler, it is a balanced...

Sometimes like me your forced into sitting the exam thru your own pocket, I had 2yrs exp installing central heating systems when I was laid off thru no fault of my own......my gaffer had promised me after 2 1/2yrs exp he would put me thru my ACS so was gutted & angry when let go, I tryed to get...

Does anyone know the difference between CITB ACS & the BPEC one,speaking to someone on here who said there safety controls were easy & it differed from what I was doing on the CITB acs.

A. You can finish the test as its downstream your testing but if the reg has locked up you cannot touch it, call supplier. B.Anytime you use ECV the pipes get sprayed

Your right.....nerves are a *ugger aint they! I wasn't as bad as some though, there was an older guy sitting near me on my theory exam who couldn't stop shaking.....especially his hand which was all over the place,the assessors had to give him some water & a short break.

There is a reason for the pilot.......not sure though :? Maybe ChrisR can explain. The 3rd option is a tightness test at meter with iso valve open at appliance?

Yes......if the fsd fails gas will pass thru to burner which would then show (in a sizeable movement) on the manometer, this is what tutors have taught us this week.....it saves time on the assessment if your taking burner pressure, you can check fsd at the same time, so were told. With...

Weve been trained to check ffd same time as we do burner presssure, turn of iso valve to appliance with gauge connected.......listen for click then open valve back up....if theres a small blip in gauge then ffd is passing, I believe british gas guys called it the blip test. How do you check...

Wish my test was the same, we have the control rig set up with faults which we have to locate & repair then take burner pressures & check FSD's aswell, its trying to remember everything! 1 more question on purging.....when Ive commisioned appliance do I have to work out the purge volumes or...

What did you fail on fitz? Got my appliances assessments on Mon,Tues......how did you find them?

Cheers chris........means nothing tho unless I pass this bloody assessment!

If I change the word "pilot" to flame doesn't that make sense?? Right....so.......when tap on thermostat opened and flame lit, gas opens full rate thru thermostat valve & into FSD/burner, when thermostat reaches required temp valve closes......but still maintains temp thru by-pass to burner...

Right....so.......when tap on thermostat opened and pilot lit, gas opens full rate thru thermostat valve & into FSD/burner, when thermostat reaches required temp valve closes......but still maintains temp thru by-pass rate to burner, when stat cools down valve opens again (depending on setting)...

Take screw cap of first,then adjust BP screw accordingly. For controlling gas flow......they also work for controlling thermostat temp. It works alot quicker,also vapour can be used to open & close electrical contacts using a microswitch.

Bp is adjusted by the screw on the regulator? Liquid exp device works on the principle of heat & expansion of liquid to open/close bellows on a safety device? Vapour differs from liquid exp in that when the liquid reaches boiling point in the phial it vapourises causing rapid volume increase...

Sorted now

Dont think so Yes, the main functions on an MFC are main gas cock,solenoid,governor and FSD.......working pressure is taken from meter, burner pressure & gas (working) inlet pressure is taken from P1 P2 test points on gas valve,pilot is adjusted with small screw on gas valve?? Isn't that the...

This is initial i'm doing, re-assessment is alot less......& 5 yrs is a bit off anyway:o)