Noritz NR501-OD Service Manual page 23

<NRC711 (-DV, -OD)>
Water heating
23
Shutdown procedure
Ignition operation
Note 1) ＊ = 1. 2. 3. 4. 5, 6, 7, 8, 9
Note 2) ＊ = 1. 2. 3
Note 3) ＊ = 1. 2, 4
Note 4) ＊ = 1. 2. 3. 4. F
# = 1. 2. 3. 4. 5, 6, 7, 8, 9, A, b, C, d, E, F
#1 = 0, 1. 2. 3. 4. 5, 6,
#2 = 0, 1. 2. 3. 4. 5, 6, 7, 8, 9