I have installed a Worcester Greenstar 8000 35kw system boiler
Instead of the boiler modulating it gets to 69 degrees and cuts off drops down to 50 degrees then kicks in again this cycle happens every 5 mins like clockwork
I thought it may be air but I put got water only on I have an unvented cylinder next to the boiler so it's a small circuit and boiler gets straight up to 72 degrees and cuts off again this cycle is every 5 mins surely if it's a modulating boiler the hot water even on a small circuit should just modulate at about 70 degrees and stay on until the cylinder stat is up to temperature? Anyone else experienced this or got any ideas what's causing it?
Instead of the boiler modulating it gets to 69 degrees and cuts off drops down to 50 degrees then kicks in again this cycle happens every 5 mins like clockwork
I thought it may be air but I put got water only on I have an unvented cylinder next to the boiler so it's a small circuit and boiler gets straight up to 72 degrees and cuts off again this cycle is every 5 mins surely if it's a modulating boiler the hot water even on a small circuit should just modulate at about 70 degrees and stay on until the cylinder stat is up to temperature? Anyone else experienced this or got any ideas what's causing it?