National Combustion Co., Inc.
Page 20
Figure 14. Water Heater Piping — Multiple Heaters, Multiple Tanks.
Table 9. Water Flow Requirements — F85V.
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.
Summary of Contents for Fire Coil 85
Page 23: ...Fire Coil 85 500 2000 Page 23 Figure 19 Fire Coil 85 500 750 Connection Diagram ...
Page 24: ...National Combustion Co Inc Page 24 Figure 20 Fire Coil 85 1000 Connection Diagram ...
Page 25: ...Fire Coil 85 500 2000 Page 25 Figure 21 Fire Coil 85 1250 2000 Connection Diagram ...
Page 37: ...Fire Coil 85 500 2000 Page 37 Figure 23 Sheet Metal Components ...
Page 38: ...National Combustion Co Inc Page 38 Figure 24 Internal Components ...
