Service Handbook

70 • Condensing Models: On-Demand Water Heater Service Handbook
COMPONENTS
Waterway Assembly
C
D
D
C
461
452
153
152
417
466 064
411
058
413
450
053
415
403
052
467
463
063
455
458
462
413
451
451
413
451
414
414
451
052
409
457
460
453
408
059
454
410
416
455
458
402
459
457
404
406
456
405
052
453
407
059
416
053
417
A
B
A
B
401
154
E
E
467
463
063
455
458
455
467
463
063
455
458
A
455
455
468
B
467
463
063
455
458
455
for Indoor model
418
419 465
715
464
053
Outdoor Model
Indoor Model
InletOutlet
412
Secondary Heat
Exchanger
Secondary Heat
Exchanger
Heat Exchanger
(Primary)
ŽŵďƵƐƟŽŶ
Chamber
COMPONENT DIAGRAMS/ITEM NUMBERS