Rough-In Dimensions - A.O. Smith 160M Operation Manual

ROUGH-IN-DIMENSIONS
TABLE 1 - ROUGH-IN DIMENSIONS
Dimensions
NOTE: To compensate for the effects of high altitude areas above 2000 feet, input rating, and therefore recovery ratings, should be
reduced approximately 4% for each 1000 feet above sea level.
TABLE 2 - RECOVERY CAPACITIES
Input F°
Model Btuh KW C° 11.1C° 16.6C° 20C° 22.2C° 27.7C° 30C° 33.3C° 38.8C° 40C°
120,000 GPH
HW-120M
35 LPH
160,000 GPH
HW-160M
47 LPH
199,000 GPH
HW-200M
58 LPH
225,000 GPH 1096
HW-2250M
66 LPH
Recovery rating of models shown in chart above are obtained by actual efficiency test data by recognized Certification Agency.
NOTE: Recovery rate shown on each models rating plate is based on the requirements of ANSI Standard Z21.10.3, which stipulates
the data to be based on energy efficiency of 75%.
TABLE 3 - CAPACITY AND GAS AND ELECTRIC CHARACTERISTICS
Model
HW-120M thru 225M
HW-120M thru 200M
Minimum Supply Pressure, Natural Gas: 4.5 inches W.C. (1.12 kPa)
Minimum Supply Pressure, Propane Gas: 11.0 inches W.C. (1.74 kPa)
Minimum Pressure must be maintained under both load and no load (static and dynamic) conditions.
Models HW-120M
Inches mm
A 49 3/8 1254
B 30 3/8 772
C 23 5/8 600
D 20 3/4 527
E 5 1/2 140
F 10 254
G 11 13/16 300
H 6 152
J 26 11/16 678
K 20 3/4 527
L 1 1/4 NPT
M 1 NPT
N 1/2 NPT
W 1 3/4 44
Approx.
Shipping 120 lbs. 54 Kg.
Weight
HEATER PERFORMANCE DATA
U.S. Gallons/Hrs. and Litres/Hr. at TEMPERATURE RISE INDICATED
20F° 30F° 36F° 40F° 50F°
605 403 336 303 242
2290 1527 1272 1145 916
777 518 432 388 311
2941 1961 1634 1471 1176
987 658 548 494 395
3737 2491 2076 1869 1495 1384
731 609 548 438
4149 2766 2305 2074 1659 1537
Manifold Pressure
Type of Gas Inches W.C.
NATURAL 3.5
PROPANE 10
HW-160M HW-200M
Inches mm Inches
50 1/8 1273 53 1/4
30 3/8 772 33 1/8
23 5/8 600 27 1/8
20 3/4 527 20 3/4
5 1/2 140 5 1/2
10 254 10
11 13/16 300 11 13/16
7 178 7
26 11/16 678 26 11/16
20 3/4 527 20 3/4
1 1/4 NPT 1 1/4 NPT
1 NPT 1 NPT
1/2 NPT 1/2 NPT
1 3/4 44 1 3/4
155 lbs. 70 Kg. 165 Lbs.
54F° 60F° 70F° 72F° 80F°
44.4° 50C° 55.5C°
224 202 173 168 151
848 763 654 636 573
288 259 222 216 194
1089 980 840 817 735
366 329 282 274 247
1246 1068 1038 934
406 365 313 304 274
1383 1185 1152 1037
Maximum Supply Pressure
kPa Inches W.C.
0.87 10.5
2.49 13.0
2
HW-200M
mm Inches mm
1353 60 1524
841 33 1/8 841
689 27 1/8 689
527 20 3/4 527
140 5 1/2 140
254 10 254
300 11 13/16 300
178 7 178
678 26 11/16 678
527 20 3/4 527
1 1/4 NPT
1 NPT
1/2 NPT
44 1 3/4 44
75 Kg. 175 lbs. 79 Kg.
90F° 100F° 108F° 110F° 120F° 126F° 130F° 140F°
60C° 61.1C° 66.6C° 70C° 72.2C° 77.7C°
134 121 112 110
509 458 242 416
173 155 144 141
654 588 545 535
219 197 183 179
830 747 692 679
244 219 203 199
922 830 768 754
Electrical Characteristics
kPa Volts/Hz
2.61 120/60
3.23 120/60
101 96 93 86
382 364 352 327
129 123 120 111
490 467 452 420
165 157 152 141
623 593 575 534
183 174 169 157
691 659 638 593
Amperes
<5
<5