Manuals / A.O. Smith / Household Appliance / Water Heater

A.O. Smith 974 Series, 975 Series manual Recirculating System, DETAIL 4 - GAS VALVE

Models: 975 Series 974 Series

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RECIRCULATING SYSTEM

RECIRCULATING SYSTEM

		BTH 300A	BTH 400A
Item	Description	974/975	974/975
1	Pump, Recirculation	196915	196915
2	Elbow, 3/4" Male - 1" Female	194872	194872
3	Di-Electric Union	196941	196941
4	Vent, Automatic Air	194830	194830
5	Tube, Inlet	194820	194820
6	Tube, Closed End Dip	194924	194924

DETAIL 4 - GAS VALVE

Item	Description	BTH 300A	BTH 400A
Item	Description	974/975	974/975
1	Nipple, 3/4" - Pipe	85040-18	85040-18
2	Nipple, 1/8" - Pipe	192948-2	192948-2
3	Pipe, Union	95515	95515
4	Switch, Low Gas Pressure	191149-6	191149-6
	LP Gas	191149-4	191149-4
5	Tee, Non-Reducing	40119	40119
6	Valve, NAT Gas	194536-5	194536-5
	Valve, LP Gas	194536-6	194536-6
7	Orifice, NAT	192477-268 ..	192477-304
	Orifice, LP	192477-185 ..	192477-221
8	Orifice holder	192447	192447

Standard hardware items may be purchased locally.

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A.O. Smith 974 Series manual Recirculating System, DETAIL 4 - GAS VALVE, Standard hardware items may be purchased locally

Contents

OPERATING CONTROL WIRING See Page CYCLONE XHE - MODEL BTH-300A/400A POWERED ANODE ASSEMBLYSeries 974/975 See PageBLOWER/BURNER ASSEMBLY See Page See Page GAS VALVE See Page RECIRCULATING SYSTEM See PageNot illustrated Standard hardware items may be purchased locally CYCLONE XHE BTH 300A/400A - PARTS LISTCYCLONE XHE BTH 300A/400A - CONTROL PANEL CYCLONE XHE BTH 300A/400A - OPERATING CONTROLS & WIRING See Next PageDETAIL 2 - CYCLONE XHE BTH 300A/400A - CONNECTIONS Continued Standard hardware items may be purchased locally RECIRCULATING SYSTEMDETAIL 4 - GAS VALVE EXHAUST ELBOW, VENT KIT & BLOWER INTAKE PARTS BLOWER/BURNER - ASSEMBLY A.O. Smith Water Heater Parts Fulfillment POWERED ANODE ASSEMBLYBTH 300A BTH 400A