Rheem 864 Series Owner's Manual And Installation Instructions page 97

Switch dip switches 1 and 2 to the on (up) position on the DIP 2 set of
10.
DIP switches on the I.C. Board.
The temperature setting of '48' will show on the LED display, if this has
not previously been adjusted.
AU – 866 series: Press the MAX button once to increase the outlet
11.
temperature setting to the next increment.
The MAX button is located underneath the DIP 1 and DIP 2 set of DIP
switches and to the right of the MIN button.
Each press of the MAX button will increase the temperature setting by
one increment.
The outlet temperature setting will show on the LED display.
The outlet temperature setting increments above 48°C are:

50°C, 51°C, 52°C.
NZ – 876 series: Press the MAX button once to increase the outlet
12.
temperature setting to the next increment.
The MAX button is located underneath the DIP 1 and DIP 2 set of DIP
switches and to the right of the MIN button.
Each press of the MAX button will increase the temperature setting by
one increment.
The outlet temperature setting will show on the LED display.
The outlet temperature setting increments below 55°C are:

50°C, 51°C, 52°C.
Switch dip switches 1 and 2 to the off (down) position on the DIP 2 set
13.
of DIP switches on the I.C. Board.
The LED display will go blank.
Note: Wait ten (10) seconds for the setting to be saved.
14. Check the water temperature at the hot tap by repeating steps 2 to 5.
AU – 866 series:
15.
if the water temperature is still below 50°C and requires to be increased, repeat steps 10, 11 and 13,

followed by steps 2 to 5 until an acceptable water temperature not exceeding 50°C is measured at
the same hot tap.
if the water temperature exceeds 50°C, then;


switch dip switches 1 and 2 to the on (up) position on the DIP 2 set of DIP switches on the I.C.
Board.
The outlet temperature setting will show on the LED display.

press the MIN button once to decrease the outlet temperature setting to the next increment.
Each press of the MIN button will decrease the outlet temperature by one increment.
The MIN button is located underneath the DIP 1 and DIP 2 set of DIP switches and to the left of
the MAX button.

Switch dip switches 1 and 2 to the off (down) position on the DIP 2 set of DIP switches on the
I.C. Board.
The LED display will go blank.
Note: Wait ten (10) seconds for the setting to be saved.

repeat steps 2 to 5 to confirm the water temperature does not exceed 50°C.
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COMMISSIONING