Manual Programming - Noritz NR501-OD Service Manual

Manual Programming

(only do this if the data transfer on the previous page is unsuccessful)
This procedure will require the remote controller.
Make sure the circuit board is completely connected.
1. Make sure the remote controller is off ( completely blank ), If it is ON, turn it OFF and wait for 10 seconds.
2. ...then disconnect
electrical power.
[ Remote controller ]
PRIORITY light
display
( MW number )
4. With the remote controller blank, press the up button until the display blinks "99".
UP / DOWN button
power ON/OFF button
FLOW METER ALARM SET button
Setting list for MW settings and Gas manifold pressures
Gas type
Model
NRC661-DV Natural
LPG
Natural
NRC661-OD
LPG
Natural
NRC661A-DV
LPG
Natural
NRC661A-OD
LPG
NRC711-DV Natural
LPG
Natural
NRC711-OD
LPG
NR501-OD Natural
LPG
NR662-OD Natural Natural
LPG LPG
5. Once complete, hold the UP and DOWN buttons together for five seconds until the remote
controller starts beeping rapidly.
This is the signal that the changes to the MWs have been saved and the unit is ready for use.
6. Check manifold pressures with a digital manometer and adjust if necessary.
3. Wait 10 seconds and reconnect power.
Leave the remote controller off.
You are now in the maintenance writer (MW) mode and can scroll through the
MWs using the UP and DOWN buttons.
For each MW the PRIORITY light will either be on, indicating that the MW is
ON, or off, indicating the MW is OFF.
You can toggle each MW to be ON or OFF using the FLOW METER ALARM SET
button.
a) MW "#23" must be ON for all units except the NRC661-DV/OD.
b) Turn MW "FC" and "FE" ON and press the UP or DOWN button.
(Display blinks with "A0 ". )
Configure the remaining MWs according to the chart below based on your unit's
model and gas type.
(Check the rating plate for model and gas type)
Circuit board MW setting
A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AE AF B0 B1 BC
62
(
Vent Length Adjustment
Manifold Pressure (inch H
-DV(-SV) Model only
Cover off
Dip Switch 7 Vent Length
C8 Max value
Short Length 3.15
Long Length 3.20
Short Length 3.15
3.15
Long Length
3.10
3.20
Short Length 3.15
Long Length 3.20
Short Length 3.15
3.15
Long Length
3.10
3.20
Short Length 3.05
Long Length 3.10
Short Length 3.55
3.60
Long Length
2.75
3.45
2.70
3.05
2.80
2.85
)
:ON :OFF
O)
2
Min value
1.05
1.05
1.30
1.30
1.05
1.20
1.05
1.05
1.30
1.30
1.05
1.20
1.05
1.05
1.20
1.20
0.95
1.20
1.05
1.25
1.25
1.30