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CHECK WATER TEMPERATURE BEFORE USE.
A parent should always check the temperature before a child is placed in contact
with hot water.

Each time a button is pressed, a ‘beep’ will sound. The ‘beep’ sound and the ‘bath fill 
complete’ buzzer can be muted by pressing the Temperature Controller Up and Down 
buttons simultaneously for more than 3 seconds. To return to original settings, repeat this 
step.

Avoid getting water in the speaker as this may cause damage.

15

Rinnai America

FF  Models

D E L U X E  B AT H R O O M  C O N T R O L L E R

Setting  the  Sound  Volume

The  voice  prompt  sound  volume  for  all  Deluxe 
Controller(s)  can  be  set  individually. To  do 
this,  press  the  ‘Sound  Vol.’  button. The  default 
voice  prompt  sound  volume  is  medium,  each 
subsequent  press  of  the  ‘Sound  Vol.’  will  cycle 
through  the  available  volume  settings  in  the 
following  order:  High  Voice  -  Off  Voice  (beep) 
-  Off  Sound  (no  beep)  -  Low  Voice  -  Medium 
Voice.

Press  the  ‘Sound  Vol.’  again  to  complete  setting 
of  the  sound  volume  and  return  to  normal 
operation. 

Adjusting  Temperature

Simply  press  the  ‘Hot  water  temp.’ 

  or 

  buttons  until  the  required  temperature  is 

displayed  on  the  Digital  Monitor.

To  Operate  the  hot  water  unit,  open  any  hot 
water  tap. This  will  automatically  light  the 
burner  providing  hot  water. The  red  fl ame  of  the 
water  heater  ‘In  Use  Indicator’ 

  will  illuminate 

on  the Temperature  Controller.

Once  the  hot  water  is  running,  if  the  set 
temperature  is  either  too  hot  or  cold,  press  the 
‘hot  water  temp. 

  or 

  buttons  until  the 

desired  temperature  is  reached.

TEMPERATURE CANNOT BE AD-
JUSTED EXCEPT BETWEEN 98 

O

F AND 110

O

F WHEN ANY HOT 

WATER TAP IS OPEN.

Summary of Contents for MC-91-1US

Page 1: ...ON The controller s for the Rinnai Water Heater allow the customer to control the functions of the water heater and to diagnose certain fault conditions REMOTE CONTROLLERS IDENTIFICATION MC 91 1US comes with the unit MC 100V 1US optional BC 100V 1US optional ...

Page 2: ...es flash in the event of a failure Thermostat Increases or decreases the desired water temperature In Use Indicator Indicates that a hot water tap is open and that control of the temperature has been taken at another controller ON OFF Used to switch the water heater on and off Priority Pressing takes control of the water temperature by this controller only when all taps are off Priority Indicator I...

Page 3: ...rands or in emergency situations In Use Indicator Indicates that a hot water tap is open and that control of the temperature is taken at another controller Priority Pressing takes control of the water temperature by this controller only when all taps are off Call Allows user to contact another controller Can be used as a communication channel for errands or in emergency situations Clock 12 Hour AM...

Page 4: ...ture is displayed on the Digital Monitor To Operate the hot water unit open any hot water tap This will automatically light the burner providing hot water The red flame of the water heater In Use Indicator will illuminate on the Controller Once the hot water is running if the set temperature is either too hot or cold press the or buttons until the desired temperature is reached Setting The Sound Vo...

Page 5: ...ume is medium each subsequent press of the Sound Vol will cycle through the available volume settings in the following order High Voice Off Voice beep Off Sound no beep Low Voice Medium Voice Press the Sound Vol again to complete setting of the sound volume and return to normal operation Adjusting Temperature Simply press the Hot water temp or buttons until the required temperature is displayed on...

Page 6: ...bath fill volume is set to 25 gallons The shower bath volume can be lowered to a minimum of 10 gallons or raised to a maximum of 120 gallons Programming shower Bath Volume and Temperature With the system on select a Deluxe Bathroom controller s and ensure that it currently has priority If it does not have priority press the Priority button once and the Priority button will To select the desired del...

Page 7: ... say Hot water is not available Turn off all hot water taps and push the Bath Fill button Follow the voice prompt instructions When Water Smart Bath Fill Operations Finishes Once the Water Smart Bath fill operation finishes the following events will occur 1 The flow from the shower bath hot water tap will cease 2 The Water Smart Bath Fill button will flash 3 The Kitchen Controller Bath indicator w...

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