FLOW RATE
Flow Rate Capacity Chart
The chart is based on a properly sized gas line and installa on at 0-2,000 . (0-610 m). The water heater will de-rate
approximately 3% (NG) or 4.5% (LP) per 1,000 . (305 m) of eleva on increase above 2,000 . (610 m).
0
1
2
3
4
5
6
7
8
9
10
11
12
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
Flow Rate (GPM)
THR Flow Rate Capacity Chart
THR-160
THR-180
THR-199
Temperature Rise (°F)
70 • Residen al Gas Tankless Water Heater Use and Care Guide
