User Guide

8
4) COMMISSIONING THE HEATER
BEFORE SWITCHING THE ELECTRICAL BREAKER “ON”, MAKE SURE THE INLET AND
OUTLET BALL VALVES ARE FULLY OPEN AND WATER IS FLOWING THROUGH THE HOT WATER FAUCET
FOR A MINUTE OR TWO UNTIL THE FLOW IS CONTINUOUS AND FREE FROM AIR POCKETS. DO NOT
SWITCH THE BREAKER “ON” IF THERE IS A POSSIBILITY THE WATER IN THE HEATER IS FROZEN.
1) Make sure water is flowing through the faucet.
2) Switch “ON” the electric power supply at the breaker.
3) The power indicator light on the circuit board should
come “ON” after a delay of a few seconds.
4) Check the performance of the flow switch by opening
and closing the OUTLET BALL VALVE a few times. Keep
the INLET BALL VALVE fully “OPEN”. The power
indicator light should be “ON” ONLY when water is
flowing through the heater. Return the outlet valve to
the fully “OPEN” position.