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There are 2 honeywell valves - and its a Worcester condensing boiler - how do i manually open the valve? - i look the cover off the box but there was no place for a spanner to go - will upload a photo

Ignore that point - theres 2 pipes going into each radiator so plumbed in parallel

Do you mean the thermostat valves (ie the ones with numbers) then yes we've moved these all to max, The only one i dont know thats on or off is the bathroom heater as there are no markings on this - could one valve prevent the whole system from heating? (Like plumbed in series , or shouldnt...

I presume your in england if she has employed a bc officer - in scotland we have to deal direct with council. Isolation switches above worktop will be required for appliances - you can do a 4gang switch if space is limited As for alarms - up here when we carry out warrantable works you need a...

Hi We recently moved home - into a property that has a 'dated' hw/ch system. We have an issue with what i think is a 2port honeywell valve - where the central heating is not firing the condensing boiler. Over the last couple of days the valve has been making a buzzing noise and simply not...