Installation Guide and Manual

COMMISSIONING THE WATER HEATER

CAUTION

Before switching the electrical breaker "on", make sure the inlet and outlet ball valves

are fully open and water is flowing through all points of use for a minimum of 2

minutes at maximum flow. Open and close drain valve 3 times while purging to

remove any lodged air bubbles. Do not switch the breaker "on" if there is any

possibility the water in the heater is frozen.

After verifying the heater has been purged of air (see above)

and the cover has been secured to the unit, turn the circuit

breaker/disconnect “ON” and observe the start-up sequence

on the display. The unit will first display a splash screen. The

Safe Start will commence. The unit needs to purge a volume

of 1.5 gallons of water at a rate of 0.5 GPM or greater, before

it will begin to heat. The heater cannot measure less than 0.5

GPM of flow rate and will not deduct volume from the “gallons

left” counter unless the flow rate is over 0.5 GPM. The

instantaneous flow rate is displayed on the Safe Start screen

for your reference. This procedure will run each time the

electrical power supply is turned off/on to the unit.

After Safe Start has completed, the LCD screen will briefly

display “Heater commissioned” and then the “Run” screen

which includes: SETPOINT TEMPERATURE in degrees F in the

upper left corner. Inlet temperature and outlet temperature

in degrees F are on the next line. Flow in GPM and the

Software version are on the third line. The load percentage on

each element is on the last line.

Below the display are 4 push buttons that are used to control

the function of the heater. Press the UP or DOWN buttons to

establish your desired set point temperature.

NOTE: DO NOT remove or replace the cover while the power

is on. Button malfunction may occur. If button malfunction

occurs reset the power to the unit after the cover is properly

secured in place.