Rheem 874 Owner's Manual And Installation Instructions page 11

STANDARD CONTROLLER
priority light
in use light
display panel
water volume
symbol
water volume
operating light
water volume
button
controller type
K = Kitchen
B1 = Bathroom1
B2 = Bathroom2
Note: water volume button, water volume operating light and water volume symbol are on the Kitchen
controller only.
SILENCING A CONTROLLER – STANDARD
The controller emits a sound whenever a button is pressed. This sound can be turned off to provide silent
operation.
To turn off the sound:
Press the on / off button, to deactivate the controller (on / off light is off).
Press and hold the up () button.
Press the on / off button, whilst the up () button is pressed.
The sound for the controller is deactivated. Repeat this procedure on the other controllers if you wish to
deactivate their sound. To restore the sound, repeat this procedure.
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TEMPERATURE CONTROL – STANDARD
button
 down
button
on / off
operating light
on / off
button
up