Dee

Pictures of damp issue

Thanks @joe90 DPC abit frayed but I'll take a photo tomorrow. The downpipe was solid moss on the same corner so water was spilling over to the ground and ingressing I think.....sound unlikely?

Hi I noticed while unblocking a down pipe that a chunk of mortar had fallen out of the DPC line....(hence the mould and damp in the adjacent room) Is it a simple fix? Do I just replace the mortar?

As tempting as it is to change the valves I think it's a step too far for me to attempt and as much as I woukd like yo try its likely to cost me more when I buggar something up! I'll keep persevering with the current tedious method!

I've calculated that it will cost £450 to change all valves and it's too costly in one hit. I'll persevere with manual balancing as too much could go wrong with my limited knowledge! Those last two rads are about 20m from the boiler and the heat/ pressure/power just doesn't seem to be enough to get there....no oomph! Someone suggested the expansion tank might be too small??

Marshian.....so which of the 3 valves you mentioned would you use now?

The second image are the style I have. I'll look into those valves...thanks for a great peice of info and advice!

I've managed to get 2 of the 4 final cold rads to heat up...they're cast iron 4 column rads (that were here when we bought the place). I had to crank down the 2 bathroom bathroom rails above the rads to 'push' the heat through but it's worked. The final 2 are having none of it so I'm giving up, closing them off completely, shutting the door and walking away!

I didnt know such wonders existed in radiator valves! The rads are Acova, don't know where they stand on quality. no idea if they have diverters as they're 20+ years old and I can't remember. Im definitely looking into swapping the valves over as an option. If i were to replace two a month is there a way of doing this without draining down each time? ( I'll be doing the work myself)

TRVs are pegler terrier. Some are 20yrs old but I'm replacing them one by one as too costly to do all at once. Boiler cycles 3xhr I'm getting abetter understanding now and thanks everyone for your input

Sorry!

That's always quoted as being the ideal temperature across f and R...I don't know enough to question that;) At 70 deg flow temp....Boiler is set to 60⁰ 27 rads TYPO! There are 19rads

Thankyou for clarifying that! Other issue is I'm not achieving anything close to 12⁰ across any of the rads try as I might....at the boiler the difference is only 9⁰

So....if I go back along the chain of rads that preceed the 4 cold ones, do I tweak the lockshields more closed or more open?

I've got those 2 working by turning off all 17 other rads at both f and R and forcing the heat to them....worked! then going back through each rad, turning back on and tweaking the return side. I stopped last night with 4 furthest from the boiler to balance....this morning I can't get those 4 to heat up!! They're all column rads with TRVs

Hi I have 2 rads that will not heat when other 27 rads are running. I've turned all other rads off both flow and return and the 2 cold rads are now hot. What does this tell me? What do I do now please?

Balanced the whole system yesterday and all good other than 2 historically stubborn rads which remain Luke warm! Any advice?

The link doesn't work I'm afraid. My first time balancing thie system with the new boiler and the flow at the boiler is 56c and Return is 46c.( It's a system boiler) should it be 20c difference? Since starting from scratch this morning, the average across the rads F and R is average of only 6 degrees and some downstairs rads are now stone cold. All LSVs are only open 1/4 turn too. What does this tell me?

Thanks for explaining! Hg says focus on room temp not rad temp but how do I measure room temp? I think I'll have to do it the laborious way via the LS, I don't know another way

Read through heat geek and it's way beyond my comprehension. DeltaTs, emmiters, the correct LSVs.....! I'm stuck with the system I have...a new baxi 400 and 24yr old pump, rads and valves.

I'm doing the full balance. I've added a rad and turned 9 rads off by the trv completely ( not touched the LSVs ) as those rooms are shut off in the winter and the remaining 10 have all gone to pot! I don't understand why though. Some are now stone cold whereas before they were fine.

I'm going to balance the (baxi 400/heatrea sadia) heating system tomorrow but I have a few questions.... There are 19 rads so how critical is it to adjust each rad in the correct order? I simply can't around them all fast enough to jot down the order/speed they heat and some seem to heat up at the same time. The pump is set to 3 is this correct? I'll be using a multimeter with a clamp, any tips or advice?

Hi I ve had a new baxi heat only boiler installed, a Baxi 400 (+ heater sadia water tank). I asked Baxi if I can use a smart thermostat like Nest or Hive but was told they don't work on heat only boilers....is this correct?

I like makita alot but too expensive:(

Yes, it is