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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
(Gal/Hr)
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)
123
98
133
98
148
98
158
98
Maximum First
Hour Rating
(Gal/Hr) @
140 °F
115 °F
190
285
200
295
210
305
225
320
Coil
Dry
Volume
Weight
(Gal)
(Lbs)
2.5
170
2.5
180
2.5
196
2.5
224
Standby
Minimum
Heat Loss
Output of
Rating
Heat Source
(°F/Hr)
(BTU/Hr)
1.1
65,000
0.9
65,000
0.7
65,000
0.6
65,000
Continuous
Draw Rating
(Gal/Min) @
140 °F 115 °F
2.6
4.2
2.6
4.2
2.6
4.2
2.6
4.2
9
Wet
Weight
(Lbs)
470
547
695
848
Minimum
Heat Source
Flow Rate
(Gal/Min)
8.0
8.0
8.0
8.0
Approximate
Boiler Output
Needed For
Ratings
(BTU/hr)
140,000
140,000
140,000
140,000
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