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Performance
Data
UNT-PRC001-EN 27
Hot Water
Reheat Coils
Heating performance is based on 70 F (21 C) entering air temperature, 180 F (82 C)
entering hot water temperature with a 20 F (-7 C) DT.
All performance measured on high speed tap, 115 V, 0.2” (.5 cm) ESP, with no filter.
See page 18 for performance groupings.
Table PD-18. Hot Water Reheat Coil With High Static Motor, Group 2
Main
Coil TMBH GPM WPD
FC Rows (TkW) Q/ITD (L/s) (Pa)
2 3.1 (.9) 0.03 0.3 (.02) 0.01 (30)
02 3 3.0 (.9) 0.03 0.3 (.02) 0.01 (30)
4 2.9 (.8) 0.03 0.3 (.02) 0.01 (30)
2 4.3 (1.3) 0.04 0.4 (.03) 0.02 (60)
03 3 4.0 (1.2) 0.04 0.4 (.03) 0.02 (60)
4 3.9 (1.1) 0.04 0.4 (.03) 0.02 (60)
2 5.6 (1.6) 0.05 0.6 (.04) 0.04 (120)
04 3 6.1 (1.8) 0.06 0.6 (.04) 0.04 (120)
4 6.0 (1.8) 0.05 0.6 (.04) 0.04 (120)
2 9.6 (2.8) 0.09 1.0 (.06) 0.11 (329)
06 3 10.3 (3.0) 0.09 1.0 (.06) 0.11 (329)
4 10.0 (2.9) 0.09 1.0 (.06) 0.12 (359)
2 13.2 (3.9) 0.12 1.3 (.08) 0.20 (598)
08 3 13.0 (3.8) 0.12 1.3 (.08) 0.20 (598)
4 12.7 (3.7) 0.12 1.3 (.08) 0.19 (568)
2 17.0 (5.0) 0.16 1.7 (.11) 0.35 (1050)
10 3 17.7 (5.2) 0.16 1.8 (.11) 0.38 (1140)
4 17.2 (5.0) 0.16 1.7 (.11) 0.36 (108)
2 19.9 (5.8) 0.18 2.0 (.13) 0.50 (1500)
12 3 20.4 (6.0) 0.19 2.0 (.13) 0.52 (1560)
4 19.9 (5.8) 0.18 2.0 (.13) 0.50 (1500)
Table PD-19. Hot Water Reheat Coil With High Static Motor, Group 3
Main
Coil TMBH GPM WPD
FC Rows (TkW) Q/ITD (L/s) (Pa)
2 2.9 (.8) 0.03 0.3 (.02) 0.01 (30)
02 3 2.8 (.8) 0.03 0.3 (.02) 0.01 (30)
4 2.7 (.8) 0.03 0.3 (.02) 0.01 (30)
2 4.1 (1.2) 0.04 0.4 (.03) 0.02 (60)
03 3 3.9 (1.1) 0.04 0.4 (.03) 0.02 (60)
4 3.8 (1.1) 0.03 0.4 (.03) 0.02 (60)
2 5.5 (1.6) 0.05 0.6 (.04) 0.03 (90)
04 3 5.9 (1.7) 0.05 0.6 (.04) 0.04 (120)
4 5.8 (1.7) 0.05 0.6 (.04) 0.04 (120)
2 9.2 (2.7) 0.08 1.0 (.06) 0.10 (299)
06 3 9.9 (2.9) 0.09 1.0 (.06) 0.11 (329)
4 9.7 (2.8) 0.09 1.0 (.06) 0.11 (329)
2 12.7 (3.7) 0.12 1.3 (.08) 0.19 (568)
08 3 12.5 (3.7) 0.11 1.3 (.08) 0.19 (568)
4 12.3 (3.6) 0.11 1.2 (.08) 0.18 (538)
2 16.4 (4.8) 0.15 1.6 (.10) 0.33 (987)
10 3 17.0 (5.0) 0.15 1.7 (.11) 0.35 (1050)
4 16.6 (4.9) 0.15 1.7 (.11) 0.34 (1020)
2 19.2 (5.6) 0.18 1.9 (.12) 0.47 (1400)
12 3 19.6 (5.7) 0.18 2.0 (.13) 0.49 (1460)
4 19.2 (5.6) 0.17 1.9 (.12) 0.47 (1400)
Note:
1. Medium and low speed capacities are approximately
80 percent and 60 percent respectively of the high speed capacity.
2. Q/ITD =MBH (kW)/(Entering water temperature - Entering air temperature) when ∆T and GPM (L/s) remain constant. To
determine heating capacities at a different entering water temperature or entering air temperature, compute the new ITD and
multiply it by the Q/ITD shown.
3. High static motors need the appropriate length of duct to prevent poor acoustical applications.