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A
DRAIN
VALVE
B
Model Number
Tank Capacity in Gallons (Liters)
52
80
120
Standard
BTU/
KW Input
Hour
6
20,478
9
30,717
12
40,956
13.5
46,075
15
51,195
18
61,434
24
81,912
27
92,151
30
102,390
36
122,868
40.5
138,226
45
153,585
54
184,302
*Figured at 1 KW (3413 Btu) = 4.1 gallons at 100°F temperature rise.
To determine recovery rate per minute, divide recovery rate per hour by 60.
DIMENSIONS AND CAPACITIES DATA
3/4" NPT
OPENING
DISPLAY FOR
ELECTRONIC
CONTROL
MODELS ONLY
INLET
OPENING
5.25
Figure 1. Dimensions and Components
Table 1. Tank Capacities and Dimensions
50 (189.3)
80 (302.8)
119 (450.5)
Table 2. Recovery Rate in Gallons Per Hour Temperature Rise °F
30°
40°
50°
82
62
49
123
92
74
164
123
98
184
138
111
205
154
123
246
184
148
328
246
197
369
276
221
410
307
246
492
369
295
554
418
3332
615
461
369
738
553
443
This Instruction Manual covers two models of commercial
electric water heaters:
These two models are equipped from the factory with different
controls.
In this Instruction Manual, one model is factory equipped with
a surface mounted thermostat/ECO combination control and is
referred to as a surface-mount control model.
The other model is equipped with an electronic control system
and is referred to as an electronic control model.
C
A - Inches (mm)
B - Inches (mm)
55 3/4 (1416)
21 3/4 (552)
60 1/4 (1350)
25 1/2 (648)
62 1/4 (1581)
29 1/2 (749)
60°
70°
80°
90°
41
35
31
27
62
53
46
41
82
70
61
55
92
79
69
62
102
88
77
68
123
105
92
82
164
140
123
109
184
158
138
123
205
176
154
137
246
211
184
164
277
237
208
1185
307
263
230
205
369
316
277
246
6
WATER
OUTLET
CONDUIT
OPENING
C - Inches (mm)
Inlet/Outlet
27 (685)
1 1/4
31 (787)
1 1/4
35 (889)
1 1/4
100°
110°
120°
130°
25
22
21
19
37
34
31
28
49
45
41
38
55
50
46
43
61
56
51
47
74
67
61
57
98
89
82
76
111
101
92
85
123
112
102
95
148
134
123
113
166
151
138
128
184
168
154
142
221
201
184
170
140°
18
26
35
40
44
53
70
79
88
105
119
132
158
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