Rinnai RHFE-431WTA User Manual

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FROST PROTECTION
■ This function allows a minimum room temperature to be pre-set, between 38°
F and 60
°
F. Once the 
Frost Protection function is selected the appliance will start heating whenever the room 
temperature falls below the selected temperature, regardless of timer or manual settings.
■ In addition this function can be used to protect the elderly of infirm who may suffer from 
hypothermia.
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■ Follow the steps below to set and operate the Frost Protection:
Make sure the heater is turned OFF.
Press the  “Frost” button. The 
Frost Protection temperature 
and the “Frost” indicator will be 
displayed.
Press the “ 
▲ ” and “ ▼ ” 
buttons to select the Frost 
Protection temperature. 
(Between 38
°
F and 60
°
F). 
When the “Frost” indicator is displayed the Frost Protection is operating, and will always prevent the
room temperature from falling below the pre-set Frost Protection temperature.
■ To turn off the Frost Protection:
Press the “Frost” button. The 
“Frost” indicator will go out. 
Set
Frost
pm
Tu
Eco
Frost
Override
Auto
ON/OFF
Set
Frost
pm
Tu
Programming
Clock
Timer
Select
pm
Tu
Eco
Frost
Override
Auto
ON/OFF