Trane UHSB Installation, Operation And Maintenance Manual page 48

Table 31. HOT WATER CONVERSION FACTORS BASED ON 200° (93°C) ENTERING WATER, 60° (16°C) ENTERING AIR
AND 20° (11°C) TEMPERATURE DROP
ENTERING
AIR
TEMPERAT 100° 120°
URE °F (°C) (38) (49)
30 -(1) 0.518 0.666
40 (4) 0.439 0.585
50 (10) 0.361 0.506
60 (16) 0.286 0.429
70 (21) 0.212 0.353
80 (27) 0.140 0.279
90 (32) 0.069 0.207
100 (38) 0.000 0.137
Table 32. HOT WATER OUTPUT, FLOW RATE AND PRESSURE LOSS FACTORS BASED ON STANDARD CONDITIONS OF
200°F (93°C) ENTERING WATER, 60°F (16°C) ENTERING AIR & 20°F (11°C) WATER DROP
USE FACTORS FROM THIS TABLE TO OBTAIN
APPROXIMATE RESULTS
To obtain output for other Water Temperature Drops,
multiply basic output rating by applicable Factor.
To obtain flow for other Water Temperature Drops,
multiply basic rate rating by applicable Factor.*
To obtain Pressure Loss Feet (Meters) of Water for other
temperature Drops, multiply Basic loss at 20°F (11°C)
drop by Factor.
Table 33. MINIMUM WATER FLOW
MODEL No. A08
MINIMUM GPM (L/s) 0.125
(.008)
MODEL No. 108
MINIMUM GPM (L/s) 3.35
(.211)
Table 34. HEATING CAPACITY FACTORS FOR VARIOUS RATES OF WATER FLOW
% of Rated Water Flow 25%
Heating Capacity Factor .80
48
Hot Water Performance Data
ENTERING WATER TEMPERATURE - °F (°C)
140° 160° 180°
(60) (71) (82)
0.814 0.963 1.120
0.731 0.878 1.025
0.651 0.796 0.941
0.571 0.715 0.857
0.494 0.636 0.777
0.419 0.558 0.698
0.345 0.483 0.621
0.273 0.409 0.546
5
(3)
1.25
5.00
10.00
A18 A25 A36 18
0.125 0.125 0.125 0.750
(.008) (.008) (.008) (.047)
120 132 144 156
3.60 4.09 4.09 4.09
(.227) (.258) (.258) (.258)
50% 75% 100% 125%
.89 .96 1.00 1.04
200° 220° 240°
(93) (104) (116) (127)
1.268 1.408 1.555
1.172 1.317 1.464
1.085 1.231 1.375
1.000 1.143 1.286
0.918 1.060 1.201
0.837 0.977 1.117
0.759 0.897 1.035
0.682 0.818 0.955
TEMPERATURE DROP °F (°C)
10 15 20 25
(6) (8) (11) (14)
1.15 1.08 1.00 .94
2.30 1.44 1.00 .74
5.00 2.00 1.00 .60
24 36 48
1.240 1.240 1.490
(.078) (.078) (.094)
180 204 240
4.34 4.34 4.59
(.274) (.274) (.290)
150% 175%
1.07 1.10
260° 280° 300°
(138) (149)
1.702 1.850 1.997
1.609 1.755 1.908
1.518 1.663 1.824
1.429 1.571 1.717
1.342 1.483 1.630
1.257 1.397 1.545
1.173 1.311 1.462
1.094 1.230 1.371
30 40 50 60
(17) (22) (28) (33)
.90 .83 .76 .72
.59 .40 .30 .24
.40 .20 .13 .07
60 72 84
1.490 1.620 1.860 3.350
(.094) (.102) (.117) (.211)
280 300 360
4.59 6.08 6.08
(.290) (.384) (.384)
UH-SVX01A-EN
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