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Specifications continued-
Table 2: Water Heater Capacities
MODEL
40-Gal.
50-Gal.
65-Gal.
80-Gal.
Table 3: AHRI Certified Water Heater Ratings
First Hour
MODEL
40-Gal
50-Gal
65-Gal
80-Gal
NOTE: These certified ratings were obtained with a heat source
output and flow rate as specified in Table 3 and a 180°F boiler water
supply temperature. Other results will be obtained under different
conditions.
Table 4: Water Heater Performance
MODEL
40-Gal.
50-Gal.
65-Gal.
80-Gal.
NOTE: Based on 200 °F boiler water temperature and 50 °F potable
water inlet temperature.
Tank
Capacity
(Gal)
38
46
60
75
Continuous
Draw
Rating
Rating
(Gal/Hr)
(Gal/Hr)
123
133
148
158
Maximum First
Hour Rating
(Gal/Hr) @
140 °F 115 °F
190
200
210
225
Coil
Volume
(Gal)
2.5
2.5
2.5
2.5
Standby
Heat Loss
Rating
(°F/Hr)
98
1.1
98
0.9
98
0.7
98
0.6
Continuous
Draw Rating
(Gal/Min) @
140 °F 115 °F
285
2.6
295
2.6
305
2.6
320
2.6
9
Dry
Wet
Weight
Weight
(Lbs)
(Lbs)
170
470
180
547
196
695
224
848
Minimum
Output of
Heat Source
(BTU/Hr)
65,000
65,000
65,000
65,000
Approximate
Boiler Output
Needed For
Ratings
(BTU/hr)
4.2
140,000
4.2
140,000
4.2
140,000
4.2
140,000
Minimum
Heat Source
Flow Rate
(Gal/Min)
8.0
8.0
8.0
8.0
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