Recent content by numpty2010

hi i have a marley plastic adjustable ventilation grille which covers the internal wall hole to the outside grille, but i can't remember how to pop the sliding cover off the back plate. i can't see any marley ones online although manrose look like they employ the same type of design. the top...

i've been asked to see if there is an ABV (automatic bypass) valve on my new heating system as all the rads have trv's. these apparently should be on a loop somewhere, but i can't see anything in the boiler cupboard other than the flushing connection. could this be up in the loft? where would...

just to correct you slightly, he did say for the mean of 76.5C he divided by the correction factor of 1.17 temp diff of 55.5C on the myson chart, but i understand what you're saying. so that domestic building compliance guide return temp of 55*C, i'm already 10*C over that on the benchmark...

i'm not sure if efficiency means boiler rating or how it runs allied to the system components. I'm using a third more gas units than the old back boiler that's why, largely due we think to 2 undersize rads, but i'm heating a cylinder i don't need and have an oversize boiler that i'm...

the benchmark page in the back of the boiler's instructions says flow 75C and return 65C. Is this indicative of a working but poorly matched system, or done in a test mode just to indicate system function? appreciate any help thanks

ok i've noticed in the benchmark log book for the boiler it says flow temp 75C and return 65C, which i've had wrong as the installer told me to run it at 70C. perhaps he meant it's mean temp. So i'll try that first off but i'm sure the bedroom temp won't match the thermostat, it was 4 degrees...

ok i've finally had an email back from the council's contracted engineer in which he says: for this property the loads have been divided by the correction factor (as opposed to multiplied as we thought for two of the rads). Having said that the resident is not correct with regards to the...

bump!

hi newbie here, the council put in a new valliant boiler, cylinder and new rads throughout as part of the homes standard they have to adhere to these days. I'm disabled and live in a small bungalow so it's only 3 rads and hot water. i don't have a bath, the shower is electric and heats...