Rough-In Dimensions; Foreword - A.O. Smith CYCLONE XHE BTH 300A Installation & Operating Instructions Manual

GAS VALVE PIPING
BTH-300 3/4" NPT
BTH-400 3/4" NPT
TYPE OF INPUT
MODEL GAS BTUH
300,000
BTH-300 NATURAL
280,000
BTH-300 PROPANE
400,000
NATURAL
BTH-400
400,000
BTH-400 PROPANE
Recovery capacities are based on heater performance at 98% thermal efficiency.
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 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.
ROUGH-IN-DIMENSIONS
TABLE 1, RECOVERY CAPACITIES
U.S. Gallons/Hr and Litres/Hr at TEMPERATURE RISE INDICATED
Approx. F° 20F°
KW Capacity C° 11C°
130 US Gals. GPH 1782
88 492 Litres LPH 6745
130 US Gals. GPH 1663
82 492 Litres LPH 6295
130 US Gals. GPH 2376
117 492 Litres LPH 8993
130 US Gals. GPH 2376
117 492 Litres LPH 8993

FOREWORD

30F° 40F° 50F° 60F° 70F°
17C° 22C° 28C° 33C° 39C° 44C° 50C°
1188 891 713 594 509
4496 3372 2698 2248 1927
1109 832 665 554 475
4197 3148 2518 2098 1799
1584 1188 950 792 679
5995 4496 3597 2998 2569
1584 1188 950 792 679
5995 4496 3597 2998 2569
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 CSA B149.1 and
CSA C22.1. The former is available from the Canadian Standards
Association, 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.
2
80F° 90F° 100F° 110° 120F° 130F°
56C° 61C° 67C°
445 396 356 324 297
1686 1499 1349 1226 1124
416 370 333 302 277
1574 1399 1259 1145 1049
594 528 475 432 396
2248 1998 1799 1635 1499
594 528 475 432 396
2248 1998 1799 1635 1499
140F°
72C° 78C°
274 255
1038 964
256 238
968 899
366 339
1384 1285
366 339
1384 1285