Hi, I bought a replacement DHW sensor for a Heatline Heatline Vizo 24/28 Condensing Combi Boiler. Looking at the instructions it seems fairly straight forward to replace (famous last words). 1. Isolate the gas and cold water inlets (close levers C (yellow-gas) & D (blue-cold water inlet)). 2. Disconnect from mains electric (is this required?). 3. Turn on hot water taps (faucets) to drain system. 4. Disconnect leads from sensor and remove sensor. 4. Fit sensor and close taps. 5. Open mains water inlet (is this the lever that is used to put more water in the system when the pressure is low or does this just mean open the cold water inlet that I closed in number 1(D)?). 6. Refit leads to sensor and open gas inlet. 7. Reconnect mains electric if required. Is this correct?
Any help you give would be much appreciated!
Any help you give would be much appreciated!