Morning all!
So I finally installed the evohome system yesterday. TRVs on all rads, set up as per the Honeywell diagram with a two port switching valve for hot water only, and an ABV. I'm using a Ideal Vogue 32 system boiler, with opentherm control.
After some initial issues with binding, I completed a factory reset and cleared the binding in all of the hr92s. System seemed to fire up properly, the rads got nice a hot, and the TRVs shut off as they should.
However, looking at the boiler this morning, it's stating a 20% efficiency, which surprised me somewhat! I wanted to check a couple of details to see what people think.
When there's no heat demand, the pump runs for quite a while, which I think I was expecting, but also the boiler intermittently fires for short bursts. I've taken a couple of photos of the boiler graphs to show what I mean. I've tried reducing the boiler temp to move it towards the condensing point, bit that has has no effect.
I should point out that currently not alll of the rads are plumbed in, and the hot water isn't switched over from the Aga, so that technically the boiler is oversized for the system as it stands today, but I wouldn't have expected that lower efficiency.
Thanks in advance.
IMG_6907.jpg
IMG_6902.jpg
IMG_6903.jpg
IMG_6904.jpg
IMG_6906.jpg
So I finally installed the evohome system yesterday. TRVs on all rads, set up as per the Honeywell diagram with a two port switching valve for hot water only, and an ABV. I'm using a Ideal Vogue 32 system boiler, with opentherm control.
After some initial issues with binding, I completed a factory reset and cleared the binding in all of the hr92s. System seemed to fire up properly, the rads got nice a hot, and the TRVs shut off as they should.
However, looking at the boiler this morning, it's stating a 20% efficiency, which surprised me somewhat! I wanted to check a couple of details to see what people think.
When there's no heat demand, the pump runs for quite a while, which I think I was expecting, but also the boiler intermittently fires for short bursts. I've taken a couple of photos of the boiler graphs to show what I mean. I've tried reducing the boiler temp to move it towards the condensing point, bit that has has no effect.
I should point out that currently not alll of the rads are plumbed in, and the hot water isn't switched over from the Aga, so that technically the boiler is oversized for the system as it stands today, but I wouldn't have expected that lower efficiency.
Thanks in advance.
IMG_6907.jpg
IMG_6902.jpg
IMG_6903.jpg
IMG_6904.jpg
IMG_6906.jpg
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