40
. Water Piping
(continued)
D. Temperature Rise and Heat Exchanger Head Loss
1. The AMP heat exchanger adds pressure drop to the system which must be accounted for in the design of the
piping configuration and pump selection.
2. For systems with glycol mixture, the flow rate specified in Table 20 will increase as specified in Table 24 due
to the extra frictional loss introduced by the glycol. Size pump accordingly.
3. Strictly follow glycol manufacturer’s guidelines and recommendations when adding glycol in the heating system.
4. The system should be designed to maintain the recommended water flow rate shown in Table 20 while never
exceeding the range of absolute flow rates shown in Table 23. Exceeding the maximum water flow rates can
cause pipe erosion, damage the flow switch, and allow unsafe operation.
a. Maintaining sufficient flow through the boiler will help prevent the buildup of scale.
Table 20: Temperature rise, flow rate, and head loss
200
300
400
50
150
250
350
6.7
13.35
10
20
16.7
0
100
3.35
Water Flow Rate (gal/min)
2000 MBtu/h
3000 MBtu/h
4000 MBtu/h
1500 MBtu/h
1250 MBtu/h
Figure 15: Heat exchanger water
pressure loss
Recommended Range
AMP
Boiler
Model
Delta 20 °F
Delta 25 °F
Delta 30 °F
Delta 35 °F
Delta 40 °F
Delta 45 °F
Delta 50 °F
Delta 55 °F
GPM
Head
Loss
(ft)
GPM
Head
Loss
(ft)
GPM
Head
Loss
(ft)
GPM
Head
Loss
(ft)
GPM
Head
Loss
(ft)
GPM
Head
Loss
(ft)
GPM
Head
Loss
(ft)
GPM
Head
Loss
(ft)
1000
97
11.1
78
7.8
65
5.9
55
4.6
49
3.7
43
3.1
40
2.6
35
2.3
1250 121 15.8
97
11.1
81
8.3
69
6.5
61
5.3
54
4.4
50
3.7
44
3.2
1500 146 15.3 116 10.8
97
8.1
83
6.3
73
5.1
65
4.2
60
3.6
53
3.1
2000 194 19.7 155 13.9 129 10.5 111
8.2
97
6.7
86
5.6
80
4.7
71
4.1
2500 242 15.4 194 11.3 161
8.9
138
7.2
121
6.1
107
5.2
97
4.6
88
4.0
3000 291
20
232 14.6 194 11.3 166
9.2
145
7.7
129
6.6
116
5.8
105
5.1
3500 339 14.4 271 10.0 226
7.6
194
6.1
170
5.2
150
4.5
135
4.0
123
3.7
4000 388 18.1 310 12.4 258
9.3
221
7.4
194
6.1
172
5.3
155
4.7
141
4.2
Required Flow = Output×1000/(500×ΔT), where flow rate is in GPM, output is in MBH, and ΔT is in 0
F, Outputs are
shown in Table 1.
This Boiler has a temperature rise limit of 55 °F
Summary of Contents for AMP 1000
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