LAARS Mighty Therm2 MT2V (Sizes 500–2000 MBTU/h) - Install and Operating Manual User Manual
Page 20
LAARS Heating Systems
Page 20
Figure 14. Water Heater Piping — Multiple Heaters, Multiple Tanks.
Table 9. Water Flow Requirements — MT2V.
Unit
gpm
ft
Temp Rise °F
lpm
m
Temp Rise °C
Size
S
N
H
S
N
H
S N H
S N H
S N H
S N H
500
45
68
90
1.8
2.3
3.5
19 13 9
170 257 341 0.5 0.7 1.1
10 7 5
750
45
68
90
2.1
3.0
6.0
28 19 14
170 257 341 0.6 0.9 1.8
16 10 8
1000
45
68
90
2.3
3.6
6.1
38 25 19
170 257 341 0.6 1.1 1.9
21 14 10
1250
68
68
90
3.8
3.8
6.3
31 31 24
257 257 341 1.2 1.2 1.9
17 17 13
1500
68
68
90
3.9
3.9
6.5
38 38 28
257 257 341 1.2 1.2 2.0
21 21 16
1750
68
68
90
4.0
4.0
6.7
44 44 33
257 257 341 1.2 1.2 2.0
24 24 18
2000
112 112 112
10.0 10.0 10.0
30 30 30
424 424 424 3.0 3.0 3.0
17 17 17
NOTES: S = soft water (1 to 7.5 grains hardness).
N = normal water (7.6 to 17 grains hardness).
H = hard water (more than 17 grains hardness).
gpm = gallons per minute; lpm = liters per minute; ft = headloss in feet; m = headloss in meters.
Headloss is for heater's heat exchanger only.