NOTE 1. Supply ghoulishness be purged to clean Impurities before connecting the unit, 2. The hot water supply should be connected to the left and the cold water Supply to the right; when viewed from the aerating position. If this Js not taken nto scout can cause permanent damage to the cartridge, 3. Screw connections and test for leaks. 4; Using a spirit level on the cans, the mineralogy horizontally, vertically and parallel to the wall. 5.