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).
12
11
10
9
8
7
6
5
4
3
2
1
0
30
35
40
70 • Residen al Gas Tankless Water Heater Use and Care Guide
THR Flow Rate Capacity Chart
45
50
55
60
Temperature Rise (°F)
THR-160
65
70
75
80
THR-180
85
90
95
100
THR-199