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TEMPERATURE CONTROL
HOTTER WATER INCREASES THE RISK OF SCALD INJURY.
This water heater can deliver water at temperatures which can cause scalding.
Water heating applications: It is necessary and we recommend that a temperature limiting device be fitted
between the water heating system and the hot water outlets in any ablution and public areas such as bathrooms,
ensuites or public amenities, to reduce the risk of scalding. The installing plumber may have a legal obligation to
ensure the installation of this water heater meets the delivery water temperature requirements of AS/NZS 3500.4
so that scalding water temperatures are not delivered to a bathroom, ensuite, or other ablution or public area.
THERMOSTAT ADJUSTMENT
All 109 Models
• Rotate the temperature adjustment knob until the required temperature is selected.
147 On/Off models (AKO Thermostat)
Set Point Adjustment:
• Press the down button (▼) for five (5) seconds.
The current set point value will be displayed.
• Press the down button (▼) to decrease the set point or the up button (▲) to increase the set point.
• Once the required set point is selected, press and hold the down button (▼) and the up button (▲)
simultaneously.
The display will revert to the current temperature in the water heater.
Differential Adjustment:
• Press and hold the down button (▼) and the up button (▲) simultaneously for ten (10) seconds,
“C0” will be displayed.
• Release the buttons.
• Press the down button (▼) until “C1” (differential) is displayed.
• Press and hold the down button (▼) and the up button (▲) simultaneously again.
The current setting for “C1” will be displayed.
• Release the buttons.
• Press the down button (▼) to decrease the setting or the up button (▲) to increase the setting to the required
value.
• Once the required differential is selected, press and hold the down button (▼) and the up button (▲)
simultaneously.
“C1” will be displayed.
• Press the down button (▼) until “EP” (exit program) is displayed.
• Press and hold the down button (▼) and the up button (▲) simultaneously.
The current temperature in the water heater will now be displayed and programming complete.
NOTES
• During the programming process if a button is not pressed for 25 seconds the thermostat will revert to its
previous temperature display. It will be necessary to start again from step 1.
• Do NOT adjust any other parameter settings; this may cause the thermostat to malfunction.