It's quite an old boiler, a Ravenheat. I was looking at a simple wired mechanical one like the Honeywell T6360. I think the T6360B is the 24v rated one.
My boiler specifies 24v for the room thermostat. Do I have to use a 24v specific thermostat or can I use a 230v one? I have seen some specs for the stats as having a supply voltage of 24v-230v. Thanks.