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These designs comply with the current 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.
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.
FOREWORD
HIGH EFFICIENCY AHCG3/HCG360T120 thru AHCG3/HCG3100T250 ROUGH-IN-DIMENSIONS
Table 1. RECOVERY CAPACITIES - NATURAL GAS / L.P.
Approx. TEMPERATURE RISE - DEGREES °F - GALLONS PER HOUR
AHCG3/ Input Gas Gallon
HCG3 BTU/Hr. Usage Capacity 30 40 50 60 70 80 90 100 110 120 130 140
60T120 120,000 nat/lp 60 461 345 276 230 197 173 154 138 126 115 106 99
100T150 150,000 nat/lp 100 576 432 345 288 247 216 192 173 157 144 133 123
100T199 199,900 nat/lp 100 767 575 460 384 329 288 256 230 209 192 177 164
100T250 250,000 nat/lp 100 960 720 576 480 411 360 320 288 262 240 221 206
AHCG3/ Gas Liter Approx. TEMPERATURE RISE - DEGREES C - Liters PER HOUR
HCG3 kW-Hr Usage Capacity 17 22 28 33 39 44 50 56 61 67 72 78
60T120 35 nat/lp 227 1744 1308 1046 872 747 654 581 523 476 436 402 374
100T150 44 nat/lp 379 2179 1635 1308 1090 934 817 726 654 594 545 503 467
100T199 58 nat/lp 379 2904 2178 1743 1452 1245 1089 968 871 792 726 670 622
100T250 73 nat/lp 379 3632 2724 2179 1816 1557 1362 1211 1090 991 908 838 778
Recovery capacities are based on 95% thermal efciency.
GAS VALVE PIPING
AHCG3/HCG360T120 1/2" NPT
AHCG3/HCG3100T150 thru 100T250 3/4" NPT