Brochure

8
Flow rate is determined by temperature rise. To determine your temperature rise, subtract the incoming water temperature from the set output temperature. All
units are factory set to 120°F or 122°F but can be changed.
Temperature Rise vs. Gallons per Minute
Temp Rise KJr2/U
Series
K4/U
Series
D2/U
Series
H3MH
Series
H3JH
Series
H3SH
Series
H3H
Series
M50
Series
30° 6.6 8.0 10.0 6.6 6.6 8.0 10.0 14.5
35° 6.6 8.0 9.3 6.4 6.6 8.0 10.0 14.5
40° 5.7 7.8 8.1 5.6 6.6 8.0 9.5 14.5
45° 5.1 6.9 7.2 5.0 6.6 7.6 8.4 13.5
50° 4.6 6.2 6.5 4.5 6.1 6.8 7.6 12.2
55° 4.2 5.7 5.9 4.1 5.5 6.2 6.9 11.1
60° 3.8 5.2 5.4 3.7 5.1 5.7 6.3 10.1
65° 3.5 4.8 5.0 3.4 4.7 5.3 5.8 9.4
70° 3.3 4.4 4.7 3.2 4.3 4.9 5.4 8.7
75° 3.1 4.1 4.3 3.0 4.1 4.6 5.0 8.1
80° 2.9 3.9 4.1 2.8 3.8 4.3 4.7 7.6
85° 2.7 3.7 3.8 2.6 3.6 4.0 4.4 7.2
90° 2.5 3.5 3.6 2.5 3.4 3.8 4.2 6.8
95° 2.4 3.3 3.4 2.3 3.2 3.6 4.0 6.4
100° 2.3 3.1 3.3 2.2 3.0 3.4 3.8 6.1
Flow Rate Guide
Example of Hunter Curves for
Sizing Large Applications
Comparison of Flow Rates vs.
Temperature Rise
400
375
350100
75
50
25
200
175
150
125
300
275
250
225 325
0
100
80
60
90
70
50
10
20
30
40
0
Fixture Units
Gallons Per Minute
Restaurants
Hospitals, Nursing Homes,
Dormitories, Hotels & Motels
Apartments & Houses
Office Buildings & Schools
Hunter Curves for Sizing Large Applications
Temperature Rise (°F)
Flow Rate (gpm)
140120100806040200
16
14
12
10
2
4
6
8
0
M50 SERIES D2/U SERIES H3 SERIES
H3S SERIES K4/U SERIES
KJr2/U SERIES
H3J SERIES
H3M SERIES