When replacing the pump, it is also a good idea to replace the non return valve with an AVG solar rated non return valve . Most manufacturers require the non return valve to protect the circulating pump for several reasons.
Solar Hot Water Manufacturers
This product is required to be installed by a licensed trades person as per applicable legislation, and be clear that failure to do so breaches manufacturer’s warranty and may result in injury and/or death, may jeopardise applicable insurance policies or may be in breach of the relevant law. Solar Hot Water Parts recommend that Buyers check with their local authorities in regards to any specific regulations regarding licensing requirements for Plumbing or Electrical work.
Further information for Plumbing & Electrical licensing is available at:
|State or Territory
||Plumbing Licensing Information