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Sorry Austin once again when sent out to the forum all the figures have been rammed together. Chris

Hi MikeAustin Yes like you I had fallen for the new gas saving devices pushed out in the media and found that my old 24 year old wall fitted boiler had the temp up in the rads in around 20 mins and piping hot water out of the tank. Output temp was nearly 80* with the Ideal NF70. The boiler is...

Back Agile British Gas measured the mortar between the Ibstock outer bricks which was 10mm below the outside brick surface. ie cement recessed by 10mm on all faces and told me that they could not go ahead and drill the bricks and blow in the glass wool. Yet other owners with the same recess of...

Hi DS_Hailsham Did not restart at 15 minutes into the run. The boiler actually clicked off for some 20 seconds then went back onto burn all by itself and continued to heat up? Cylinder upstairs thermostat was set to 59*C and checked with a thermocouple directly behind the Danfoss stat strapped...

Back Agile with the HW only running temp with the new boiler heating up the copper tank upstairs. Will turn the Grundfos pump to top position 3 later on to see if this makes any useful changes. Viessmann Vitodens 100-W open vent boiler HW only Ambient temp outside minus 1*C Time min...

Hi Agile These are the readings I was getting over the weekend. They are rather messed up in getting them on the forum. Grundfos Super Selectric 15-30 130 pump set on the middle speed as when the Ideal boiler was used and nothing changed on the bypass valve. Pump replaced 2 months ago ready for...

Thanks gasservice1985 Will take the isolation valve out next week when I can drain the system to copper tank level. Take it you prefer a manual valve and not a automatic Danfoss AVDO15mm Bypass valve to replace it? Could you tell me the advantage of not using an automatic expensive valve (aprox...

Back again gasservice1985 A MagnaClean professional 2 filter had been added to the return pipe just above the boiler with the new Veissmann. Today with just the CH only on and not going through the copper tank with dial setting of 6 I get a reading with one bar showing of 65*C output and 55*C...

Spot on gasservice1985 many thanks for taking the trouble to reply. It is the standard cheap isolation valve with the silly blue plastic lever that always breaks off as used in washing machine fittings before the plastic water pipe. The plumber installed this when the house was first built also...

Hi gasservice1985 I was comparing the big heavy cast iron heating boiler to a modern spiral heating tube where the transfer of heat would be faster than trying to heat up a big lump of cast iron with the burner at the bottom going full blast as my Ideal NF70. The Veissmann goes up to 3 bars...

Thanks Muggles The Ideal Classic NF70 was dead simple to repair and the pcb had just the two relays on board but started to run out of relays needed as the voltage required to was high plus 10 amp capacity for the contacts which used to slowly wear out. Would have kept the boiler but it had...

Sorry Tony The new Grundfos Selectric installed was a direct replacement of the original fitted some 24 years ago when we built the house. Used to have to change the wires inside the box for speed change No change in pumping speeds. Chris

Veissmann 100-W taking longer to heat up than Ideal Classic NF70 cast iron boiler Pump used in the central heating system is a Grundfoss Super Selectric UPS 15-60 130 set on the middle position 2. Replaced by myself 3 months ago with two new 240volt Honeywell motorised valves before the Gas...

New Viessmann 100-W boiler taking longer to heat radiators up than old cast iron unit I have been using a Ideal Classic NF70 open balanced gas boiler for some 24 years without any problems occurring with something like 25kW input running 14 radiators via a Grundfos pump on speed 2 plus two...

Hi mogget Thanks for the information about Drayton. Will have a look as they are just what I need to update my heating system having put in a new EP2 programmer and a Grundfoss pump after 22 years of use. It was still running but starting to tick once hot. Amazing that they want some £137...

My house was built some 22 years ago with a gravity fed system using the old reliable Ideal Classic NF70 boiler and two 2 zone Honeywell valves to control H/W and C/H with a Potterton EP2 programmable timer up in the airing cupboard and a Grundfoss UPS 15-60 pump. All 14 rads have mechanical...

Hi Denso13 Went through the fully pumped menu again at set up and still no luck. The old EP6000 allowed you to see at any time what was set up and the links on the back made it bullet proof. Only wish I had kept the old unit as it was far superior in every way. Nothing has been changed...

I have a Ideal Classic NF70 boiler which has been using a EP6000 electronic programmer since 1992 but unfortunately having run out of flat 48 volt relays to replace on the PCB it has to go. Have now purchased a new Potterton EP2 programmer and have placed this on the original backplate assuming...

Have now been sorted out by Bosch UK and my GLM80 reads metric and imperial measurements. Have purchased many Bosch items over the years and not had a problem until the GLM80. Bosch sorted out my problem very quickly and in this instance a good 9/10 well deserved for such fast and efficient...

Have now been in touch with Bosch UK and they are looking into the problem for me and sound very helpful to get my non UK model sorted out. There are of course two types and Amazon sell these from Europe that come metric, good old EEC business selling problems accruing with this specific...