A.O. Smith BTH 120-250(A) warranty Cyclone XHE BTH 120 250 ROUGH-IN-DIMENSIONS, Foreword, Input

CYCLONE XHE BTH 120 - 250 ROUGH-IN-DIMENSIONS

GAS VALVE PIPING
BTH-120	1/2" NPT
BTH-150,
199 & 250	3/4" NPT
Table 1. RECOVERY CAPACITIES - NATURAL GAS / L.P.
					Approx.						TEMPERATURE RISE - DEGREES °F - GALLONS PER HOUR
	Input				Gallon
Model	BTU/Hr.				Capacity		30		40		50		60		70		80		90	100	110	120	130	140
BTH - 120	125,000 Nat.			60			475		356		285		237		203		178		158	142	129	119	110	102
BTH - 120	120,000 L.P.			60			456		342		274		228		195		171		152	137	124	114	105	98
BTH - 150	150,000 Nat.			100			570		427		342		285		244		214		190	171	155	142	132	122
BTH - 150	150,000 L.P.			100			570		427		342		285		244		214		190	171	155	142	132	122
BTH - 199	199,900 Nat.			100			759		569		456		380		325		285		253	228	207	190	175	163
BTH - 199	185,000 L.P.			100			703		527		422		351		301		263		234	211	192	176	162	151
BTH - 250	240,000 Nat.			100			912		684		547		456		391		342		304	274	248	228	210	195
		Approx.									TEMPERATURE RISE - DEGREES °C - LITERS PER HOUR
	Input		Liter
Model	kW	Capacity				17°C		22°C		28°C			33°C		39°C		44°C		50°C	56°C	61°C	67°C	72°C	78°C
BTH - 120	37 Nat.		227			1798		1348		1079		898		768		674		598		538	488	450	416	386
BTH - 120	35 L.P.		227			1726		1295		1037		863		738		647		575		519	469	432	397	371
BTH - 150	44 Nat.		379			2158		1616		1295		1079		924		810		719		647	587	538	500	462
BTH - 150	44 L.P.		379			2158		1616		1295		1079		924		810		719		647	587	538	500	462
BTH - 199	58 Nat.		379			2873		2154		1726		1438		1230		1079		958		863	784	719	662	617
BTH - 199	54 L.P.		379			2661		1995		1597		1329		1139		996		886		799	727	666	613	572
BTH - 250	70 Nat.		379			3452		2589		2071		1726		1480		1295		1151		1037	939	863	795	738

Recovery capacities are based on heater performance at 94% thermal efficiency.

FOREWORD

These designs comply with the latest version of the American National Standard for Gas Water Heaters, Volume III, ANSI Z21.10.3 / CSA 4.3 M 98 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 latest editions of the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and the National Electric Code, NFPA 70 CAN/CSA 149.1 or .2 and CSA 2C22.1. The former is available from the CSA International, 8501 East Pleasant Valley Road, Cleveland, OH 44131, and both documents are available from the

National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269.

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