WHL-052 Rev. 4.28.16
16
Heat Exchanger Pressure Drop
Flow Rate in GPM and Corresponding Pressure Drop in Feet (Δ P’)
Model
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
80
10’
14’
17’
21’
26’
*
*
*
*
*
*
*
*
*
*
*
*
110
*
*
15’
17’
22’
25’
33’
*
*
*
*
*
*
*
*
*
*
150
*
*
*
*
12’
15’
17’
19’
22’
27’
*
*
*
*
*
*
*
220
*
*
*
*
*
*
*
*
*
8’
10’
11.5’
13’
15’
16.5’
17’
19’
299
301
*
*
*
*
*
*
*
*
*
*
*
*
*
*
13’
14’
15’
399
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Model
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
80
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
110
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
150
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
220
21’
23’
24’
*
*
*
*
*
*
*
*
*
*
*
*
*
*
299
301
16.5’
18’
20’
22’
24’
26’
29’
33’
36’
*
*
*
*
*
*
*
*
399
*
*
*
12.9’
13.6’
14’
15.7’
17’
18’
19.4’
21’
22.5’
26’
28’
31’
34’
39’
Table 4 -
*Do not operate the boiler at these flow rates. These low or high flow rates will damage the heat exchanger or related
components. Damages due to improper operation ARE NOT covered by warranty.
The chart below represents various system design temperature rise through the boiler along with respective flows and friction
loss. This is provided to aid in circulator selection.
System Temperature Rise Chart
20°Δt
25°Δt
30°Δt
Model
Friction Ft
Flow Rate (GPM)
Friction Ft
Flow Rate (GPM)
Friction Ft
Flow Rate (GPM)
80
17’
8
10’
6.6
7’
5.3
110
25’
11
17’
9.1
12’
7.3
150
27’
15
12.5
10
220
19’
22
13’
18.3
14.6
299
301
29’
29
18’
24.5
13’
20
399
39’
39
19’
32.5
26
Table 5 - Temperature Rise, Friction Ft and Flow Rate
Summary of Contents for WBRE110
Page 13: ...WHL 052 Rev 4 28 16 13 Figure 5 Boiler Dimensions NOTE All Dimensions Are Approximate ...
Page 37: ...WHL 052 Rev 4 28 16 37 Figure 25 Internal Connection Diagram ...
Page 62: ...WHL 052 Rev 4 28 16 62 Figure 30 Combustion System Replacement Parts 80 220kBTU Models ...
Page 63: ...WHL 052 Rev 4 28 16 63 Figure 31 Combustion System Replacement Parts 299 399kBTU Models ...
Page 64: ...WHL 052 Rev 4 28 16 64 Figure 32 Cabinet Replacement Parts All Models ...
Page 65: ...WHL 052 Rev 4 28 16 65 Figure 33 Cabinet Replacement Parts All Models ...