Rinnai Comprehensive Controller Manual for Efficient Water Heater Operation

R E M O T E C O N T R O L O P E R A T I O N

Digital Monitor

Indicates the selected water temperature. Error messages flash in the event of a failure.

°F

Set Temperature

In Use Indicator

Indicates that a hot water tap is open. (The setpoint temperature cannot be ad- justed when indicator is il- luminated.)

Maintenance

M

In Use

Maintenance Button

Pressing repeatedly shows sequence of error codes water heater has experi- enced.

C

Main Controller	H
MCC - 45 - 3US

endless hot water system

CAUTION: Hotter water increases the risk of scald injury. Before changing tempera- ture setting, see instruction manual

Thermostat

Increase or decrease the desired water temperature.

When the Main Controller MCC-45-3US is used in public use applications, it should be installed where it can not be adjusted by the public (i.e. a maintenance room or manager’s office.

DIAGNOSTIC USE OF REMOTE CONTROL

1.To Display Error Codes -- Press Maintenance Button, “M”. To sequence throuh stored error codes, press “M” followed by the “H” thermostat button.

2.To Display Water Flow through water heater -- Press “H” thermostat but- ton, hold for 2 seconds and simultaneously press “M” button.

3.To Display Outlet Water Temperature -- Press “C” thermostat button, hold for 2 seconds and simultaneously press “M” button.

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