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These designs comply with the current version of the Standard for Gas Water
Heaters, Volume III, ANSI Z21.10.3 / CSA 4.3 as automatic circulating tank water
heaters, 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 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, 5060 Spectrum Way,
Mississauga, Ontario, Canada, L.
FOREWORD
MODELS (A)JWSH100150 THRU (A)JWSH100250 ROUGH-IN-DIMENSIONS
GAS VALVE PIPING
(A)JWSH100150, (A)JWSH100199, &
(A)JWSH100250
3/4" NPT
Table 1. RECOVERY CAPACITIES - NATURAL GAS / L.P.
Model
Input
BTU/Hr.
Gas
Usage
Approx.
Gallon
Capacity
TEMPERATURE RISE - DEGREES F - GALLONS PER HOUR
30 40 50 60 70 80 90 100 110 120 130 140
(A)JWSH100150 150,000 nat/lp 100 576 432 345 288 247 216 192 173 157 144 133 123
(A)JWSH100199 199,900 nat/lp 100 767 575 460 384 329 288 256 230 209 192 177 164
(A)JWSH100250 250,000 nat/lp 100 960 720 576 480 411 360 320 288 262 240 221 206
Model
Gas
kW-Hr
Liter
Usage
Approx.
Capacity
TEMPERATURE RISE - DEGREES C - LITERS PER HOUR
17 22 28 33 39 44 50 56 61 67 72 78
(A)JWSH100150 44 nat/lp 379 2179 1635 1308 1090 934 817 726 654 594 545 503 467
(A)JWSH100199 58 nat/lp 379 2904 2178 1743 1452 1245 1089 968 871 792 726 670 622
(A)JWSH100250 73 nat/lp 379 3632 2724 2179 1816 1557 1362 1211 1090 991 908 838 778
Recovery capacities are based on 95% thermal efciency.