John Wood SERIES 100 User Manual
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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 efficiency.