Recent content by liam2308

Noise comming from pipes and from what I have been told on this site my problem is noise bouncing from TRVs which are fitted to all radiators except hall where room stat is. Some of the TRVS were 1 way and were on the return - I have now replaced these with 2 way TRVS. Still getting noise. From...

It is a long story but basically my boiler is in the garage and I have four wires running through a Horstmann HXL27 just new to replace Diadem 425. These are buried under drive - to run more cables would require digging up drive. These 4 wires supply boiler/pump/motorised valve/and the electric...

New boiler installed and noticed noise from 2 radiators. On the forum a member suggested one way TRVS on the return. Have now replaced the one way TRVs that were on the returns with 2 way TRVs ( 4 in total )but I am am still getting a hammering noise from 2 radiators/pipework. If I turn of...

Have now replaced the one way TRVs that were on the returns with 2 way TRVs but I am am still getting a hammering noise from 2 radiators/pipework. If I turn of radiators no noise if I turn them on noise can be heard. When the systen is initially heating up there is no noise but as temperature...

This is a new boilerhouse model - I have it in the garage. On the dial there are no numbers just a graduated black marker - thin going to broad. At present I have it about 2/3 rds of the way up. I will try and get my hands on a digital thermometer but you certainly could not hold your hand on...

Again many thanks - now starting to get an insight how this stat is working. Cycle rate is 3 per hour and min. on time 4 mins as recommended by Honeywell for an oil burner in their category 2 settings. Proportional band is now making sense. Last night I increased stat to 20 DEG. Starting at 4.30...

Many Thanks Stem - At last I am beginning to see some light. No problem with the boiler - the outflow is very hot. New radiators in hall and living room. Sludge etc is not an issue. They get hot. I was under the impression that a room stat called/controlled the boiler until the target...

Have installed 927 stat it looks great but it takes for ever for house to heat up. New powerful boiler grant vortex oil 26-36kw. stat is set to oil boiler as recommended by Honeywell and optimisation is enabled but it is not bringing the boiler on enough to heat house. Stat is in hall where the...

These are Westherm valves is it possible to change over the valve inserts only not the actual bodies. I notice that the valves have a nut shaped top brass /copper insert but was wondering that as they are factory fitted it may not be a good idea to take them out. It would save a lot of trouble...

Have fitted a cm927 room stat - programmer. Previously did not have a stat. Connecting was fairly easy. But it seems to take a long time to bring temperature up to target temperature. I have a new boiler grant condensing which is rated at 26-36 kw House 14 year old 1500 Sq.Ft with good...

MANY THANKS previously I had a horstmann 425 diadem. very simple - timer sends live to pump and boiler - pump is on all the time for the timed period and boiler is controlled by its stat and cyles normally. But I have no Room stat to control temperature I purchased cm927 to control temperature...

have installed a cm927 honeywell room stat/programmer. I would like to use this as my programmer. At present I have it wired so that when stat calls for heat boiler comes on as well as the pump. Once the stat is satified boiler and pump go off. Is it possible to wire so that the pump continues...

Totally agree with you. I am now certain my problem is the boiler - as it is only 2/3 weeks old. I will get installer to check stat settings on the boiler and contact makers Grant for advice. Again many thanks for your time and advice

Many thanks for prompt replies . House is well insulated 270mm in loft - double glazing - approx 14 years old. I am using diadem to bring on power/electric at 4.00 afternoon - obviously 927 stat then takes control we arrive in at appox 5.30 temperature reading 15 - target is 18 at approx 7.30 it...