A.O. Smith BTH 300A, BTH 400A warranty Rough-In-Dimensions, Foreword, GAS Valve Piping

ROUGH-IN-DIMENSIONS

	GAS VALVE PIPING
	BTH-300		1 1/4" NPT
	BTH-400		1 1/4" NPT
TABLE 1 RECOVERY CAPACITIES.
								U.S. Gallons/Hr and Litres/Hr at TEMPERATURE RISE INDICATED
		TYPE OF	INPUT			Approx.	F°	20F°	30F°	40F°	50F°	60F°	70F°	80F°	90F°	100F°	110°	120F°	130F°	140F°
MODEL		GAS	BTUH	KW		Capacity	C°	11C°	17C°	22C°	28C°	33C°	39C°	44C°	50C°	56C°	61C°	67C°	72C°	78C°
BTH-300		NATURAL	300,000		130 US Gals.		GPH	1746	1164	873	699	582	499	436	388	349	318	291	269	250
				88		492 Litres	LPH	6610	4406	3304	2644	2203	1888	1652	1469	1322	1201	1102	1017	945
BTH-300		PROPANE	300,000		130 US Gals.		GPH	1746	1164	873	699	582	499	436	388	349	318	291	269	250
				88		492 Litres	LPH	6610	4406	3304	2644	2203	1888	1652	1469	1322	1201	1102	1017	945
BTH-400		NATURAL	399,900		130 US Gals.		GPH	2328	1552	1164	931	776	665	582	517	466	423	388	359	332
				117		492 Litres	LPH	8813	5875	4406	3525	2938	2518	2203	1958	1763	1602	1469	1356	1259
BTH-400		PROPANE	399,900		130 US Gals.		GPH	2328	1552	1164	931	776	665	582	517	466	423	388	359	332
				117		492 Litres	LPH	8813	5875	4406	3525	2938	2518	2203	1958	1763	1602	1469	1356	1259

Recovery capacities are based on heater performance at 96% thermal efficiency.

FOREWORD

These designs comply with the current edition of the American

National Standard for Gas Water Heaters, Volume III,

ANSI Z21.10.3 / CSA 4.3 as an automatic circulating tank water heater, and automatic storage water heaters.

Detailed installation diagrams are found in this manual. These diagrams will serve to provide the installer with a reference for the materials and methods of piping necessary. It is highly essential that all water, gas piping and wiring be installed as shown on the diagrams.

Particular attention should be given to the installation of thermometers at the locations indicated on the diagrams as these are necessary for checking the proper functioning of the heater.

In addition to these instructions, the equipment shall be installed in accordance with those installation regulations in force in the local area where the installation is to be made. These shall be carefully followed in all cases. Authorities having jurisdiction should be consulted before installations are made.

In the absence of local codes, the installation must comply with the current editions of the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and the National Electrical Code, NFPA 70 or CAN/CSA-B149.1, the Natural Gas and Propane Installation Code and CSA C22.1, the Canadian Electrical Code. All documents are available from the Canadian Standards Association, 8501 East Pleasant Valley Road, Cleveland, OH 44131. NFPA documents are also available from the National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269.

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