Water Heater Installation Manual

61 Page
Item # Description
Model
240HX3 340HX3 540HX3
116 Pressure port
100074227
117 Combustion chamber tube 100074528
118 Gas inlet 100074616
119 Gas inlet ring 100074526
121 Surge box plate N/A
150 O-ring P18 NBR (Black) 100074533
151 O-ring P20 NBR (Black) 100074242
152 Silicon ring for Outdoor models 100074678
153 Exhaust port for Outdoor models 100074679
401 Primary heat exchanger assembly 100342435
100276637
402 Flow adjustment valve / Flow sensor 100074624
403 Bypass valve (540HX3) N/A
100074625
404 Water inlet 100074377
405 Inlet drain plug 100074381
406 Inlet water filter 100074382
407 Inlet thermistor 100074398
100074626
408 Outlet thermistor 100074680
100074374
409 Water outlet 100074681
410 Outlet drain plug 100074383
411 Heat exchanger thermistor (540HX3) N/A
100074281
412 Hi-Limit switch 100074412
100074280
413 Overheat-cut-off fuse 100074334
414 Pipe heater 100074682
415 Inlet heater for Indoor model 100074683
415 Inlet heater for Outdoor model 100074684
416 Drain plug detector assembly 100342423
417 Inlet heater 100074629
418 Secondary heat exchanger for Indoor model 100074700
Secondary heat exchanger for Outdoor model 100074701
419  100310706
420 Inlet pipe heater 100076328
421 Upper drain tube N/A
422 Band A N/A
423 Lower drain tube N/A
450 Pipe heater fixing plate 100074273
451 Heater fixing plate 16 100074310
452 Fuse fixing plate 18 100074251
453 Fuse fixing plate 14 100074331
454 O-ring P4 FKM 100076303
455 O-ring P6 FKM 100076305
456 O-ring P14 FKM 100076306
457 O-ring P15 FKM 100076307
458 O-ring P16 FKM 100076308
459 Fastener “4-11” 100074282
460 Fastener “14-22” 100074290
461 Fastener “16A” 100074410
462 Fastener “16-25A” 100074389
463 Fastener “6-15” 100074297
464 Flat heater 100074686
465 Drain pipe 100342436
466 Cold pipe 100342438 100342437
467 Stainless heat exchanger out pipe 100074690
468 Header connection 100074691
469 Drain port 100074692
470 Thermistor fixing plate 100074291
471 Exhaust thermistor gasket 100074296
472 Hi-limit switch for exhaust 100074289
473 Gasket 100074693
Parts list
Owner's Guide