Service Handbook

74 • Condensing Models: On-Demand Water Heater Service Handbook
COMPONENTS
Table 10: Component Descriptions and Part Numbers
Item Number Description
Part Number
140 Model T-H3M Model
461 Flat heater 319143-535 EK217
462 Cold pipe for 140 model 320273-555 EK477
463 Header connection 320273-368 EK478
464 Thermistor fixing plate 319143-106 EX13H
465
Exhaust thermistor
gasket
319143-111 EX13L
466
High limit switch for
exhaust
319143-104 EKH6G
467 Gasket 319143-542 EK229
468 Inlet pipe packing 320273-558 EK479
701 Computer board 320273-369 EK480
702 Rubber grommet 319143-426 EX148
703 Surge box 320273-128 EK280
704
120 VAC wire for Indoor
model
319143-427 EK146
120 VAC wire for
Outdoor model
319143-546 EK143
705
120 VAC Power ON-OFF
switch
319143-141 EKK4V
706
Remote controller wire
for Indoor model
320273-376 EK481
Remote controller wire
for Outdoor model
319143-473 EK138
707 Gas valve wire 320273-379 EK482
708 Flame rod wire 320273-380 EK483
709 Igniter assembly 320273-381 EK484
710
Freeze protection
thermostat
319143-185 EKJ59
711
Proportional gas valve
wire
319143-481 EK112
712 Nylon clamp FC6 N/A EX004
713 Computer board cover 319143-191 EKK1M
714
Cable clamp for Indoor
model
319143-500 EX13C
715
Exhaust thermistor for
Indoor model
319143-131 EKH6E
COMPONENT ITEM NUMBERS