Hello, I am after some guidance on installing a rainwater tank in BAL FZ. I know that I need a metal tank. However my supplier has told me that to install a wet system my metal downpipes need to be partially replaced with PVC so that they can hold water.
Am I allowed to use PVC in BAL FZ? I have tried to interpret AS 3959 but I am unsure.
If I can’t use PVC is there any other way to install the tank with a wet charged system, or do I need to change the design so that it is excavated in and gravity fed?
Note I need to obtain a CC so can’t go ahead and install without a PCA reviewing.
Any advice would be appreciated, thanks