Noritz NR50-OD - NC380-SV-ASME; N-1321 M-ASME Default Settings

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Changing Default Temperature Setting
<NC380-SV-ASME / N-1321M-ASME>
* The NC380-SV-ASME / N-1321M-ASME can be programmed so that it will default to one of four
temperatures if the remote controller is removed (180, 140, 130, 120°F). To change the default
temperature, the remote controlled must be initially installed, and removed after programming.
1. Within the rst ten minutes of connecting electrical power to the unit, but before pressing the
Power On/O button, hit the UP or DOWN button on the remote controller. This will put the unit
into maintenance writer mode, unplug the unit for sixty seconds and try again.
2. The maintenance monitor item number will ash on the display. (the initial item number will be
“99”).
3. The UP and DOWN buttons can be used to change the maintenance writer item number.
4. Choose a temperature from the chart below and set the 14 and 15 maintenance writers according
to the chart below. Pressing the Flow Meter Alarm Set button for 0.5 seconds will switch the
indicated item number from “OFF” to “ON” or “ON” to “OFF”. If the Priority Lamp is ashing when
an item number is displayed, this indicates an “ON” setting from that item number, and if the Priority
lamp is o, the item number is o.
5. After setting the 14 and 15 item numbers for the desired temperature, press and hold the UP and
DOWN buttons together for ve seconds to conrm the new settings. The remote controller will
emit a tone when the settings are conrmed. If this is not done, the unit will not put the setting
changes into eect. After conrming the setting, remove the remote controller to initiate the
default temperature setting.
NOTE: The setting changes can be cancelled by pressing the Power On/O button before conrming
the settings, or if the unit is left alone for ten minutes without conrming the settings. If the default
setting needs to be changes again, disconnect the electrical power to the unit, reconnect it and
follow this procedure again.
<NC380-SV-ASME/N-1321M-ASME>
Temp.
Item No.
180°F
140°F
130°F
120°F*
14
15
ON
OFF
ON
OFF
ON
ON
OFF
OFF
* Factory Default Setting
<When setting the maximum temperature to 125-180°F>
1. Turn the water heater o by pressing the ON/OFF button on the remote
controller.
2. Disconnect electrical power to the water heater.
3. Remove the front cover of the water heater (4 screws).
4. Connect "WATER TEMPERATURE ADJUSTMENT CONNECTOR" tag
connector to "180°F" tag connector as shown on the right.
5. Replace the front cover of the water heater (4 screws).
6. Reconnect electrical power to the water heater, but do not turn it on.
7. Press and hold the FLOW METER ALARM SET button until a sound is
heard (2 sec.) and 120°F appears on the display.
8. Set the upper limit of the hot-water supply temperature to
125°F, 130°F, 135°F, 140°F, 145°F, 150°F, 160°F, 170°F or 180°F
using the UP and DOWN setting buttons.
9. To put the water heater back into operation, press the ON/OFF button on the remote controller.
To keep the water heater o, let the unit sit for 30 sec. to return to the original display.
t The water heater can be programmed so that it will default to one of four temperatures if the remote
controller is removed (180, 140, 130, 120°F). To change the default temperature, connect the
temperature selection wire as shown in the above diagram. The default temperature is 120°F when
the temperature selection wire is not connected.
WA
TER
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MP
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N
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“130°F” tag
(rear: 55°C)
“140°F” tag
(rear: 60°C)
“180°F” tag
(rear: 83°C)
*WATER TEMPERATURE
ADJUSTMENT CONNECTOR” tag