Temperature Ranges; Setting The Sound Volume; Setting The Clock - Rinnai REU-VA2019FFUD-UC Operation And Installation Manual

Temperature Ranges

This water heater will attempt to provide hot water at the temperature setting even when the water flow is varied
or when more than 1 tap is in use. The water heater can deliver water at only one temperature setting at a time.
The available temperatures for a given model are provided below.
Model
R50LSi
R75LSi
R94LSi
R98LSi
R98LSi-ASME
Temp in Celsius ºC
* Re-setting the Maximum Temperature
If the model name on the side of the water heater ends with "-UC" (ex. "REU-VA2535FFUD-UC"), then these
units have a default maximum temperature of 120º F (49º C) and an option to increase the maximum
temperature to 140 ºF (60 ºC). Temperature settings from 125-140 ºF (52-60 ºC) are available by setting dip
switch 6 to ON in the SW1 bank of 8 dip switches.
Units with model names ending in "-US" have a default maximum temperature of 140 ºF (60 ºC).
** MCC-91 Temperature Controller
These settings require the MCC-91 controller. When the MCC-91 controller is connected, these higher
temperatures are available on all controller models in the system. Use of an MCC-91 controller in a residential
dwelling will reduce the warranty coverage to that of a commercial warranty application.
The MCC-91 controller is intended for commercial and hydronic applications only. If an MCC-91 controller is
used in a residential dwelling for a hydronics application, a mixing valve must also be installed to limit the
potable hot water temperature to a safe temperature. Water temperatures over 125º F (51º C) can cause
severe burns or scalding. Refer to the Danger Alert on water temperatures. Rinnai shall not, in any event, be
liable for damages resulting from such misuse or misapplication.
Suggested temperatures are
•
Kitchen 120 ºF (49º C)
•
Shower 98º - 110º F (37º - 43º C)
•
Bath Fill 102º - 110º F (39º - 43º C)
To change the temperature scale from Celsius to Fahrenheit or vice versa, press and hold the "On/Off" button for
5 seconds while the water heater is OFF.
Setting the Sound Volume (Voice Prompt)
MC-100V
Medium Volume
(default)
98 100 102 104 106 108 110 115 120
98 100 102 104 106 108 110 115 120
37 38 39 40
Press the "Function" button to
adjust the voice prompt
volume. The default sound
volume is set to Medium.
Each subsequent press of the
▲ or ▼ button cycles through
the volume levels in the order
below.
High Volume
VA Series Indoor LS Manual
Temperature Settings Available (ºF)
41 42 43 46
These temperatures are suggestions only.
A temperature lower than 98º F (37º C) can be
obtained at the tap by mixing with cold water.
BC-100V
Off Volume
(beep)
125 130 135 140
* * *
125 130 135 140
* * *
52 54 57
49
* * *
Press the "Sound Vol." button to
adjust the voice prompt volume.
The default sound volume is set
to Medium. Each subsequent
press of the button cycles
through the volume levels in the
order below.
Off Sound
Low Volume
(no beep)
150 160
* ** **
150 160 185
* ** ** **
60 66 71 85
* ** ** **
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