Catalogue

UH-PRC001-EN 19
Performance Data
NOTES:
Constant speed units are rated at capacities shown in regular type; capacities shown in italic faced type apply only to units with multi-speed motors.
**To determine BTU per hour capacities at various steam pressures and entering air temperatures, use conversion factors from Table 11. Final temperatures at new conditions
can be calculated by applying basic formula.
Table 9. Low Output Units: Standard Model Units w/All Air Ports Open
Model
No.
Total
MBh
Cond.
lbs./hr.
E.D.R.
Sq. ft. LAT °F.
Motor
HP
Motor
RPM
Nominal
CFM
Outlet Velocity
FPM
Sound
Rating
P-42L
34.8 36 145 108
1/40
1550 668 950
I
26.0 27 108 111 1150 470 672
P-64L
57.2 59 238 104
1/20
1550 1200 1190
I
45.8 48 191 109 1150 862 858
P-80L
68.0 71 283 106
1/20
1550 1360 1350
II
55.0 57 229 111 1150 995 992
P-102L
85.4 89 356 108
1/8
1070 1640 1050
II
71.2 74 296 111 850 1290 827
P-122L 111.0 115 462 107 1/6 1100 2180 1390 III
P-146L 125.0 130 524 109 1/6 1100 2360 1080 III
P-166L 149.0 154 620 107 1/6 1100 2920 1340 IV
P-202L 176.8 183 736 108 1/4 1100 3390 1560 III
P-252L 214.9 224 895 104 1/4 1100 4500 1270 IV
P-280L 251.8 260 1050 106 1/2 1100 5040 1420 IV
P-336L 291.0 302 1210 107 3/4 1140 5700 1610 IV
P-384L 344.0 356 1430 108 3/4 1140 6600 1870 IV
P-500L 428.0 446 1785 102 1-1/2 1160 9380 1860 IV
P-600L 515.0 533 2140 106 1-1/2 1160 10,300 2060 IV
P-720L 620.0 642 2580 108 3 1165 11,900 2380 IV
Table 10. STEAM CALCULATIONS AND CORRECTION FACTORS
EXAMPLE:
UNIT SIZE __________ P-42
Steam Pressure _____10 PSI
Entering Air Temp. ____ 40°F
I. CAPACITY
A. For 2 lbs. steam, 60° entering air
Read output directly from Tabl e 8: 41,300 BTU/HR.
B. For higher steam pressures and/or E.A.T.'s above
or below 60°F
Multiply output from Ta b le 8 by appropriate
correction factor from Tab l e 1 1 .
41,300 x 1.27 = 52,451 BTU/HR.
II. FINAL AIR TEMPERATURE
A. For 2 lbs. steam, 60° entering air
Read temperature directly from Table 8: 124°F.
B. For capacities calculated in I.B. (above) Output from I.B./1.085 x CFM from Tab le 8 +
E.A.T. = Final Air Temp
52,451/1.085 x 595 + 40 = 121.0°F
III. FINAL AIR VOLUME
A. For 2 lbs. steam, 60° entering air
460 + Final Air Temp from Tabl e 8/530 x Nom. CFM
from Tab le 8 = Final Air Volume
460 + 124/530 x 595 = 655 CFM
B. For final air temperatures calculated In II. B.
(above)
460 + Final Air Temp from II.B./530 x Nom. CFM
from Tab le 8 = Final Air Volume
460 + 121.0/530 x 595 = 652 CFM
IV. CONDENSATE PER HOUR
A. For 2 lbs. steam, 60° entering air
Read lbs. per hour from Tabl e 8 : 43 LBS./HR.
B. For capacities calculated in I.B. (above) Output from I.B./Latent Heat from Tab l e 1 2 = lbs.
per hour of condensate
52,451/953 = 55.0 LBS./HR.