Appliance Repair Questions? Ask a Technician for Answers ASAP
Good morning, and welcome to the Technical section in JustAnswer. My name is ***** ***** I will help you today. There's no time pressure on this topic - it will stay open for many days, and you can reply at any time. I will be away from my desk sometimes, but will respond as soon as I can.The black unit is an AAV - automatic air vent. It isn't repairable, but it's easy to replace. The steps are:1. Buy the part.2. Turn off the boiler.3. Isolate the boiler at flow and return valves.4. Drain the boiler.5. Replace the AAV.6. Reverse step 3 and increase the system pressure if needed.7. Turn on the boiler.8. Have a self-congratulatory cup of tea.5.
You don’t have to remove the pump to replace the AAV on this boiler.