I would be grateful for some thoughts/advice. I am looking to replace an Ideal Classic FF280 boiler with 'S' Plan connections. HW is via an unvented 250L OSO cylinder. My property comprises 5 beds, 2 ensuite, a bathroom, and 21 radiators. The heating system is divided into 12 Evohome zones and all rads have HR92s. HW temperature is controlled via an Evohome HW kit wired in series with the existing tank stats. The Evohome controller controls 2 BDR 91s linked to the 2 mortised zone valves.
My 17 year old boiler is getting a bit creaky, and along with WB and ATAG, I am looking at the Viessmann 200 with an Opentherm connection to the Evohome controller. Any thoughts on my choice of boiler to work with my existing Honeywell system?
My 17 year old boiler is getting a bit creaky, and along with WB and ATAG, I am looking at the Viessmann 200 with an Opentherm connection to the Evohome controller. Any thoughts on my choice of boiler to work with my existing Honeywell system?