Installation and Operation Guide

Rinnai 18 EHFA/EHFD HW IM
Wiring Diagrams
Thermostat Setting
The thermostat is adjustable from 60°C to 70°C� Turning the adjustment knob anticlockwise decreases the
temperature setting and turning it clockwise increases the temperature setting� The water heater as delivered will
have the thermostat preset to 70°C�
WARNING
EnsurethepowersupplyisswitchedOFFbeforeremovingtheaccesscovertotheelementand
thermostat.
TheaccesscovertotheelementandthermostatMUST ONLY BEremovedbyanElectricianor
othersuitablyqualiedtradesperson.
ThethermostatsettingMUST ONLY BEadjustedbyanelectricianorothersuitablyqualied
trades person.
Afteradjustment,pressthe(red)‘Reset’Buttononthethermostatstoensuretheover-temperature
andenergycut-outisset.
Neutral - N
Off Peak - A
Continuous - A
BOTTOM ELEMENT
TWIN ELEMENT
TOP ELEMENT
3 1
4
5 2
RESET
3 1
4
5 2
RESET
Earth
SINGLE ELEMENT
3 1
4
5 2
Neutral - N
Active - A
RESET
Earth
INSTALLATION