Bradford-White Corp Hydronic Boiler Manual De Usuario
Page 20
B
RADFORD
W
HITE
C
ORP.
Figure 14. Water Heater Piping — Multiple Heaters, Multiple Tanks.
Table 9. Water Flow Requirements — BMT2V.
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.
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.