User Guide

5
3) Remove the cover. Connect the pre-assembled
inlet and outlet pipes to the heater and fully open
the inlet and outlet ball valves. Check for water
leaks. If a leak is at a compression fitting, slowly
tighten the compression nut until it stops. Replace
the cover.
4) Open the hot water faucet and run the water a
minute or two until the flow is continuous and free
of air pockets. Close the faucet and install the
aerator (if supplied). * Failure to install aerator (if
supplied) will result in lower-than-expected heater
performance.
*ML Thermostatic models are designed to deliver a
flow of 0.5 GPM to each lavatory. Please install the
supplied aerators to ensure maximum heating
performance.