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Performance
Data
UNT-PRC001-EN26
Hot Water
Reheat Coils
The following performance data represents the 1-row hot water and steam reheat coils
that are available on fan-coil units in conjunction with a 2, 3 or 4-row cooling coil.
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, zero ESP, with a throwaway filter.
See page 18 for performance groupings.
Table PD-16. Hot Water Reheat Coil With Free Discharge Motor, Group 3
Main
Coil TMBH GPM WPD
FC Rows (TkW) Q/ITD (L/s) (Pa)
2 2.6 (.8) 0.02 0.3 (.02) 0.01 (30)
02 3 2.5 (.7) 0.02 0.3 (.02) 0.01 (30)
4 2.4 (.7) 0.02 0.3 (.02) 0.01 (30)
2 3.6 (1.1) 0.03 0.4 (.03) 0.02 (60)
03 3 3.6 (1.1) 0.03 0.4 (.03) 0.02 (60)
4 3.5 (1.0) 0.03 0.4 (.03) 0.01 (30)
2 5.1 (1.5) 0.05 0.5 (.03) 0.03 (90)
04 3 5.0 (1.5) 0.05 0.5 (.03) 0.03 (90)
4 4.9 (1.4) 0.04 0.5 (.03) 0.03 (90)
2 8.4 (2.5) 0.08 0.8 (.05) 0.08 (239)
06 3 8.3 (2.4) 0.08 0.8 (.05) 0.08 (239)
4 8.1 (2.4) 0.07 0.8 (.05) 0.08 (239)
2 11.2 (3.3) 0.10 1.1 (.07) 0.15 (448)
08 3 10.8 (3.2) 0.10 1.1 (.07) 0.15 (448)
4 10.5 (3.1) 0.10 1.1 (.07) 0.14 (419)
2 14.5 (4.2) 0.13 1.5 (.09) 0.26 (777)
10 3 14.6 (4.3) 0.13 1.5 (.09) 0.27 (807)
4 14.2 (4.2) 0.13 1.4 (.09) 0.25 (748)
2 17.0 (5.0) 0.15 1.7 (.11) 0.37 (1110)
12 3 16.7 (4.9) 0.15 1.7 (.11) 0.36 (108)
4 16.3 (4.8) 0.15 1.6 (.10) 0.34 (1020)
Table PD-17. Hot Water Reheat Coil With High Static Motor, Group 1
Main
Coil TMBH GPM WPD
FC Rows (TkW) Q/ITD (L/s) (Pa)
2 3.2 (.9) 0.03 0.3 (.02) 0.01 (30)
02 3 3.2 (.9) 0.03 0.3 (.02) 0.01 (30)
4 3.0 (.9) 0.03 0.3 (.02) 0.01 (30)
2 4.5 (1.3) 0.04 0.5 (.03) 0.02 (60)
03 3 4.3 (1.3) 0.04 0.4 (.03) 0.02 (60)
4 4.1 (1.2) 0.04 0.4 (.03) 0.02 (60)
2 5.9 (1.7) 0.05 0.6 (.04) 0.04 (120)
04 3 6.5 (1.9) 0.06 0.7 (.04) 0.05 (150)
4 6.3 (1.8) 0.06 0.6 (.04) 0.04 (120)
2 10.1 (3.0) 0.09 1.0 (.06) 0.12 (359)
06 3 11.0 (3.2) 0.10 1.1 (.07) 0.14 (419)
4 10.6 (3.1) 0.10 1.1 (.07) 0.13 (389)
2 13.8 (4.0) 0.13 1.4 (.09) 0.22 (658)
08 3 13.6 (4.0) 0.12 1.4 (.09) 0.22 (658)
4 13.2 (3.9) 0.12 1.3 (.08) 0.21 (628)
2 17.8 (5.2) 0.16 1.8 (.11) 0.38 (1140)
10 3 18.8 (5.5) 0.17 1.9 (.12) 0.42 (1260)
4 18.1 (5.3) 0.17 1.8 (.11) 0.40 (1200)
2 20.8 (6.1) 0.19 2.1 (.13) 0.54 (1620)
12 3 21.3 (6.2) 0.19 2.1 (.13) 0.57 (1700)
4 20.8 (6.1) 0.19 2.1 (.13) 0.54 (1620)
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.