Please indicate where in Part G, Part H or in manufacturer’s installation instructions it says you can discharge a bath/shower etc into the pumped (pressure) side of a macerator? Bath/showers/sinks are connected to the low pressure side of the macerator which then pumps all waste directly to the discharge soil stack; check valves should be fitted to low level sanitary appliances such as shower trays & possibly a bath to prevent back flow but this is not the same as siphoning. Good luck if you plan on fitting your bath/sink to the pumped side of the macerator, it could lead to a very interesting & colourfull new décor in your bathroom.
Opposingly - Please indicate where in Part G, Part H it says you cannot discharge a bath/shower etc into the pumped (pressure) side of a macerator?
There are things the BC will allow that would appear to be counterintuitive but are still permissable.
Yes - back flow is not the same a syphonage but the is always the chance of negative pressure being created in the bath branch of the outflow when the macerator is in operation thus creating syphonage - Hence the question.? Which has still not been answered.
An NRV will be fitted on the branch.
Refering to people as numptys or idiots does not do you any service. That is just childish name calling.
So you have been on this forum since 2005 - big deal is that a badge of honor, am I supposed to be impressed? So act in a mature way.