Little bit out of the way for me. Could do it at a push but not before November.
Vailant ecotec Plus 438 - slow house heat up - Please help - bucks
- Thread starter ant2
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Little bit out of the way for me. Could do it at a push but not before November.
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Hi Dan, could you quote for a low loss header install for november? Sounds like I'll need to find someone else to fix the existing plumbers work and rectify current issue in the meantime, but I think some bigger independent feeds with a low loss header is the right way to go
Probably best to give me a call ... My company Web address is in my profile and the number is there, albeit missing the first 0 apparently 
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To help others, the dramatic amount of cycling you see in this video was caused by a "faulty" pump.
I hadn't noticed as this had been getting "gradually" worse over the last 4 years, which is when I inherited it.
The pump sounded and appeared to be functioning fine, but it obviously was not operating "as it should". As you can see from the video it was also sitting in S7 (pump over run) and this now explains why.
I replaced it with a "dab - evoplus 80/180m pump". Even when limiting this pump to a 2M head the boiler cycling stopped (it just modulated), so it had an instant fix.
The daily F23 fault codes stopped and incidentally one of the reasons for this fault states "blocked/faulty pump". This provided further confirmation
Thoroughly impresses with the dab - evoplus 80/180m pump. It has a max output of 8M, I have set this on a 'proportional pressure' setting. This modulates the head (which can be displayed via the LCD) to the pressure it requires, so it's not constantly running at 8M when not needed.
From reviewing it appears tol operated between 3-6.5M, depending on requirement. With this pump the boiler is running at a full 38KW and no S23 or cycling observed. The rads are now finally all getting hot in minutes. I have never heard the boiler and pump raw so loud as they both crank up to full power.
I have a 22MM flow from the boiler that T's in to two pipe runs. A central heating run with 28MM -> 22mm, with 15mm radiator tails. The other T goes in to a 22mm hot water run to the airing cupboard. This contains 3 zones; hot water, an extension zone (5kw) and an UFH zone.
I will clock the boiler down for the summer setting to 15-20kw, as it will only be heating the 300L water cylinder.
I hadn't noticed as this had been getting "gradually" worse over the last 4 years, which is when I inherited it.
The pump sounded and appeared to be functioning fine, but it obviously was not operating "as it should". As you can see from the video it was also sitting in S7 (pump over run) and this now explains why.
I replaced it with a "dab - evoplus 80/180m pump". Even when limiting this pump to a 2M head the boiler cycling stopped (it just modulated), so it had an instant fix.
The daily F23 fault codes stopped and incidentally one of the reasons for this fault states "blocked/faulty pump". This provided further confirmation
Thoroughly impresses with the dab - evoplus 80/180m pump. It has a max output of 8M, I have set this on a 'proportional pressure' setting. This modulates the head (which can be displayed via the LCD) to the pressure it requires, so it's not constantly running at 8M when not needed.
From reviewing it appears tol operated between 3-6.5M, depending on requirement. With this pump the boiler is running at a full 38KW and no S23 or cycling observed. The rads are now finally all getting hot in minutes. I have never heard the boiler and pump raw so loud as they both crank up to full power.
I have a 22MM flow from the boiler that T's in to two pipe runs. A central heating run with 28MM -> 22mm, with 15mm radiator tails. The other T goes in to a 22mm hot water run to the airing cupboard. This contains 3 zones; hot water, an extension zone (5kw) and an UFH zone.
I will clock the boiler down for the summer setting to 15-20kw, as it will only be heating the 300L water cylinder.
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