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many thanks. regards

terraced house, boiler on one end and controls and tank the other. customer does not want exposed cables if possible. asked the question to try and get round the problem but if no alternative then they would hace to be surface mounted and trunked.

sorry an open vented conventional boiler would do the trick. just do not want to rip up chipboard flooring to replace the current three core L,N, E to five core.

does anyone have current info on a good open vent system boiler (new) that only requires switched live. problem- custommer would like new boiler. current system is open vent. problem - chipboard flooring throughout and only switched live, earth and neutral to the boiler which is miles away...

not really much to go on but, 1. when you had the expansion vessel changed, did they change the pressure relief valve,- asking this as the PRV is set to lift at 3bar and yours is dribbling at 2bar. i would suspect they did not. 2. the banging noise does sound like the water in the heat...

Well. thanks for reminding me that the viper book is more detailed than the gas safety 5th edition book. found the section you mentioned and it does clear up my confusion. 5th edition drawings do not go into such depth, and i hardly ever refer to the viper book. will learn in future. should...

just finishing my nvq so not yet registered. so unable to access that section yet

i think there is some confusion here. if you are talking about main equipotential bonding then yes it is 10mm cable, and the reason why it seems to always increases in size is due to a number of factors such as loadings on new installations and disconnection times of safety devices.. now if you...

views please. loooking at pipework recessed into various different wall constructions today. Does anyone have any views on best practice on the prefered method of material to use. the regs only stipulate the type of vapour barriers and also prevent using screwed or compression fittings. unless...

went to two of these last year in a church. customer complaining of a strange smell. the units were only about five years old. when examined they both had serious cracks on the heat exchanger front, running vertically from the inspections window for about 10 inches. both had to be made ID. Have...

I am a little worried about the reply from your electricity company. If your house has not got an earth then it is a death trap. earthing is the fundimental requiriement of any dwelling. Check with you electricity supplier what system they actually provide to the house (not who you pay the bills...

now, i am only asking this as a means of understanding what is being said, Q, if the above is correct, how does the blocked primary side of the heat exchanger affect the water flow rate through the secondary side of the the plated heat exchanger. i could understand the secondary side blocking...

i am still in training, but would suggest an idea yo get you over the xmas period. since it is probable that the expansion vessel has gone you need to get the warm water to expand somewhere to avoid the pressure relief valve from operating. pick a rad that you do not need perhaps the...