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A.O. Smith Manuals
Water Heater
BTH 120 Series
Service handbook
Wiring Diagram - Bth 120 - 300 - A.O. Smith BTH 120 Series Service Handbook
Commercial gas high efficiency water heaters
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WIRING DIAGRAM – BTH 120 ‑ 300
Servicing should only be performed by a Qualified Service Technician
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This manual is also suitable for:
Bth 400 series
Bth 500 series
Bth 300 series
Bth 150 series
Bth 199 series
Bth 250 series
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