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Performance
Data
UNT-PRC001-EN68
Basic Series
Sizes 04-08
ARI cooling performance is based on 80/67 F (27/19 C) entering air temperature, 45 F (7 C) entering chilled water temperature with a
10 F (5.5 C) ∆T.
Heating performance is based on 70 F (21 C) entering air temperature, 180 F (82 C) entering hot water temperature with a 30 F (17
C) ∆T.
All performance measured on high speed tap, free discharge motor at zero ESP, high static motor at 0.2 ESP, with throwaway filter,
and is valid for all voltages except 208.
Table B-PD-3. Free Discharge Motor, Four-Pipe
Cooling Heating
CFM TMBH SMBH GPM WPD TMBH GPM WPD 115V 230V 277V
FC Coil (L/s) (TkW) (SkW) (L/s) (kPa) (TkW) Q/ITD (L/s) (kPa) Watt Watt Watt
4 2C1H 374 (177) 8.4 (2.5) 6.6 (2.0) 1.74 (0.11) 3.9 (11.7) 15.0 (4.4) .14 1.00 (0.06) 2.8 (8.4) 100 107 106
2C2H 350 (165) 8.0 (2.4) 6.4 (1.9) 1.67 (0.11) 3.7 (11.0) 23.8 (7.0) .22 1.59 (0.10) 2.8 (8.3) 100 107 106
3C1H 350 (165) 11.1 (3.3) 7.8 (2.3) 2.28 (0.14) 8.9 (26.5) 14.4 (4.2) .13 0.96 (0.06) 2.6 (7.8) 100 107 106
6 2C1H 608 (287) 14.7 (4.3) 11.1 (3.2) 3.01 (0.19) 12.8 (38.4) 24.2 (7.1) .22 1.61 (0.10) 8.4 (25.2) 125 130 124
2C2H 565 (267) 14.1 (4.1) 10.6 (3.1) 2.91 (0.18) 12.0 (36.0) 38.4 (11.3) .35 2.56 (0.16) 8.0 (23.9) 125 130 124
3C1H 565 (267) 15.9 (4.7) 11.8 (3.5) 3.26 (0.21) 4.6 (13.7) 23.1 (6.8) .21 1.54 (0.10) 7.8 (23.3) 125 130 124
8 2C1H 731 (345) 15.4 (4.5) 12.5 (3.7) 3.16 (0.20) 3.8 (11.4) 30.2 (8.9) .27 2.01 (0.13) 15.1 (45.1) 120 123 133
2C2H 688 (325) 14.8 (4.4) 12.0 (3.5) 3.05 (0.19) 3.6 (10.7) 46.2 (13.5) .42 3.08 (0.19) 3.3 (9.9) 120 123 133
3C1H 688 (325) 20.0 (5.9) 14.2 (4.2) 4.08 (0.26) 7.7 (23.0) 29.1 (8.5) .26 1.94 (0.12) 14.1 (42.1) 120 123 133
Table B-PD-4. High Static Motor, Four-Pipe
Cooling Heating
CFM TMBH SMBH GPM WPD TMBH GPM WPD 115V 230V 277V
FC Coil (L/s) (TkW) (SkW) (L/s) (kPa) (TkW) Q/ITD (L/s) (kPa) Watt Watt Watt
4 2C1H 484 (228) 9.9 (2.9) 8.1 (2.4) 2.13 (0.13) 5.6 (16.9) 17.5 (5.1) .16 1.17 (0.07) 3.7 (11.1) 210 210 210
2C2H 453 (214) 9.6 (2.8) 7.8 (2.3) 2.06 (0.13) 5.3 (15.9) 28.4 (8.3) .26 1.90 (0.12) 3.9 (11.6) 210 210 210
3C1H 453 (214) 13.5 (4.0) 9.7 (2.9) 2.84 (0.18) 13.0 (39.9) 16.9 (4.9) .15 1.12 (0.07) 3.5 (10.3) 210 210 210
6 2C1H 780 (368) 17.0 (5.0) 13.3 (4.0) 3.62 (0.23) 17.9 (53.4) 27.9 (8.2) .25 1.86 (0.12) 10.9 (32.6) 320 320 320
2C2H 725 (342) 16.4 (4.8) 12.7 (3.7) 3.50 (0.22) 16.8 (50.1) 45.4 (13.3) .41 3.03 (0.19) 10.9 (32.6) 320 320 320
3C1H 725 (342) 19.3 (5.7) 14.7 (4.3) 4.08 (0.26) 6.9 (20.7) 26.8 (7.9) .24 1.79 (0.11) 10.1 (30.3) 320 320 320
8 2C1H 886 (418) 18.1 (5.3) 15.0 (4.4) 3.85 (0.24) 5.5 (16.5) 34.0 (10.0) .31 2.26 (0.14) 18.6 (55.5) 320 320 320
2C2H 835 (394) 17.6 (5.1) 14.4 (4.2) 3.73 (0.24) 5.2 (15.5) 52.8 (15.5) .48 3.52 (0.22) 4.3 (12.8) 320 320 320
3C1H 835 (394) 23.8 (7.0) 17.3 (5.1) 4.98 (0.31) 11.1 (33.3) 32.8 (9.6) .30 2.19 (0.14) 17.5 (52.2) 320 320 320
Note:
1. CFM = Cubic feet per minute
2. TMBH = Total capacity (MBH)
3. GPM =Gallons per minute
4. WPD = Water pressure drop (feet of water)
5. 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 temp, compute the new ITD and multiply it by the Q/ITD shown.
6. Medium and low speed capacities are approximately 80% and 60% respectively of the high speed capacity.