
When changing the Fan Motor.
When Fan Plate(B) is installed in the old Fan Motor, install Fan Plate (B) to the new Fan Motor as shown in figure to maintain the proper air volume.
When you change the Fan Motor, please remove this plate from the old Fan Motor, and install in the new Fan Motor.
After changing the Fan Motor, please follow the procedure "Circuit Board Settings ".
The unit will not operate properly unless you follow these steps.
A : Fan Motor
B : Fan Plate
C : Tapping Screw
×
3
Note .
If the Fan Motor does not operate, disconnect electrical power and repeat Procedures 1 - 4 again.
Circuit Board Settings
1. Turn off all water flow to the unit.
2. If the unit has a remote controller, turn off the "POWER" button on the remote controller so it is blank and wait for
10 seconds, then disconnect electrical power to the unit for about 30 seconds.
3. Reconnect electrical power to the unit, within the first ten minutes, press and hold both the "UP" and "DOWN" buttons
on the Circuit Board (see illustration above).
4. Approximately 10 seconds after holding the buttons in, the unit will signal a successful programming by spinning the
Fan Motor and opening and closing the gas valve. Release the "UP" and "DOWN" buttons after the confirmation.
The Fan will continue to run for about 3 minutes after the release of buttons, or you can disconnect electrical power.
"UP" and "DOWN" buttons for adjusting
the manifold pressure settings
Circuit Board
Depending on the unit the button will be in a different location.
UP
DOWN
UP
DOWN
or
63
Содержание NRC661-DV
Страница 17: ...NR501 OD NR662 OD Thermistor Cold Water Thermistor Hot Water Gas Proportioning Valve 17...
Страница 19: ...19 5 Operation Flow Chart Water heating Shutdown procedure Ignition operation NR501 OD...
Страница 20: ...Water heating Shutdown procedure Ignition operation 20 NR662 OD...
Страница 70: ...the Heat Exchanger must be flushed is set to Flushing Mode from an authorized Noritz wholesaler 70...
Страница 71: ...located 71...