Table 22: Water Flow Rates For Primary/Secondary; Table 23: Water Flow Rates For Primary/Secondary; Table 20: Minimum Water Flow Rates For Variable; Table 21: Maximum Water Flow Rate For Variable - Thermal Solutions ARCTIC Series Installation & Operation Manual

See Appendix F for boiler water flow pressure drop
data and Appendix E for piping.
1. Water Flow Rates (Variable Primary Pumping
Systems)
a. Variable primary pumping systems shall
be capable of delivering no less than the
minimum and no more than the maximum
specified in Table 20 and Table 21 for each
boiler connected in the system.
Table 20: Minimum Water Flow Rates for
Variable Primary Pumping
Arctic
Model
gpm
1000 19
1500 29
2000 38
2500 48
3000 57
3500 67
4000 76
4500 86
5000 95
5500 105
6000 114
Note: not for sizing constant volume pump
Table 21: Maximum Water Flow Rate for
Variable Primary Pumping
Arctic
Model
gpm
1000 95
1500 143
2000 190
2500 238
3000 285
3500 333
4000 380
4500 428
5000 475
5500 523
6000 570
Note: not for sizing constant volume pump
40
Thermal Solutions, 1175 Manheim Pike, Lancaster, PA 17601 Website: www.thermalsolutions.com
Minimum Flow Rate
High Fire Δ
Δ P (ft)
T (°F)
.51 100
.37 100
.65 100
.8 100
1.15 100
.42 100
.42 100
.42 100
.5 100
.58 100
.67 100
Maximum Flow Rate
High Fire Δ
Δ P (ft)
T (°F)
12.7 20
9.2 20
16.3 20
20 20
28.7 20
11.33 20
15.17 20
25.17 20
33.5 20
37.25 20
37.92 20
Phone: 717-239-7642 Fax: 877-501-5212 Email: sales@thermalsolutions.com
2. Water Flow Rates (Primary/Secondary Systems)
a. Each boiler connected to a secondary loop
of a primary / secondary pumping system
shall have a constant volume pump sized in
accordance with Table 22 or Table 23.
Table 22: Water Flow Rates for Primary/
Secondary Pumping at 20°F ΔT
Arctic
Model
gpm ΔP (ft)
1000 95 12.7
1500 143
2000 190 16.3
2500 238
3000 285 28.7
3500 333 11.33
4000 380 15.17
4500 428 25.17
5000 475 33.5
5500 523 37.25
6000 570 37.92
Table 23: Water Flow Rates for Primary/
Secondary Pumping at 40°F ΔT
Arctic
Model
gpm ΔP (ft)
1000 48 3.18
1500 71
2000 95 4.08
2500 119
3000 143 7.18
3500 166 2.67
4000 190 3.17
4500 214 6.25
5000 238 7.92
5500 261 9.25
6000 285 9.42
20°F ΔT Flow Rate
High Fire Δ Low Fire
T (°F) ΔT (°F)
20 4
9.2 20 4
20 4
20 20 4
20 4
20 4
20 4
20 4
20 4
20 4
20 4
40°F ΔT Flow Rate
High Fire Δ Low Fire
T (°F) ΔT (°F)
40 8
2.3 40 8
40 8
5 40 8
40 8
40 8
40 8
40 8
40 8
40 8
40 8