Last summer with help here I decided the diverter valve on my boiler needs replacing. An engineer had adjusted the microswitch producing a "cure" but now the symptoms are coming back (intermittent failure to produce hot water). I've obtained a diverter valve and plan to do it myself. I only have some limited plumbing experience, but it doesn't look too challenging according to the service manual. I just wanted to ask if there's anything tricky I need to watch out for on this model?
As I understand it:
Isolate boiler from mains water, gas, electric, shut of CH valves
Drain boiler (NOT rads)
Remove pump
Disconnect everything in given order from diverter
Reconnect new diverter in reverse order
Refit pump
Refill and recommission.
The main thing I don't fully understand is what happens when I open the CH valves prior to refilling. I guess water will drain down into the boiler under pressure. Is there a particular way to do this properly?
Thanks
John
As I understand it:
Isolate boiler from mains water, gas, electric, shut of CH valves
Drain boiler (NOT rads)
Remove pump
Disconnect everything in given order from diverter
Reconnect new diverter in reverse order
Refit pump
Refill and recommission.
The main thing I don't fully understand is what happens when I open the CH valves prior to refilling. I guess water will drain down into the boiler under pressure. Is there a particular way to do this properly?
Thanks
John