COMPONENT DIAGRAMS/ITEM NUMBERS (CONT.)
Computer board assembly
240 (T-H3J) and
340 (T-H3S) model
701
701
708
714
721
408
407
707
Surge box assembly
72
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On-Demand Water Heater Service Handbook for 240, 340 & 540 Condensing Models
710
713
103
709
402
402
722
061
716
703
703
540 (T-H3) model
701
714
403
715
721
121
703
063
709
053
706
709
710
708
713
103
402
402
715
707 722
716
713