Quote:But not being a Plumber not that I need to be a Plumber I am not sure how to test the Flow is at least 1.5L/Min?
I would set the mixer to full hot. Collect the water from the shower head in a kitchen measuring jug. Lets say you collect 2L in 30 seconds. That would mean the flow rate was 4L per min. Repeat with it on full cold.
You want to do this while it's demonstrating the fault condition (eg the shower head is on the hook and the pump isn't running).
Quote:With regards to the Temperature I can run some water off in to a container and measure the temperature with a thermometer.
Start by checking what the thermostat on the hot tank is set to.