6
3. Remove the cover. Connect the pre-assembled inlet and
outlet pipes to the heater (do not overtighten compression
fittings) and fully open the inlet and outlet ball valves.
Check the system for water leaks at all plumbing
connections. If a leak is present at the compression fitting,
slowly tighten compression nut until it stops ā do not
overtighten.
4. Open the hot water faucet and run water for minimum
60 seconds and until the flow is continuous and free of air
pockets. Close the faucet and install the aerator (if
supplied).
Failure to install aerator(s) (if supplied) will result in lower-
than-expected heater performance**.
**ML thermostatic models are designed to deliver a flow of
0.35 GPM to each lavatory. Please install the supplied
aerators to ensure maximum heating performance.