17
UH-PRC001-EN
Selection
Procedure
Table SP-5 – Model P Projection Unit Heater Steam Capacities
2 Lbs. Steam 60 F Entering Air Temperature
Motor
Motor
BTU
Condensate
Final
CFM 70 F
CFM at
Outlet
Oper.
Size
HP
RPM
Per Hour
EDR
Lbs Per Hr
Temp.
Air Basis
Final Temp.
Velocity
Weight Lbs.
Standard Models
42-P
1/25
1550
41,300
172
43
124
595
660
877
30
1150
33,600
140
35
131
436
495
658
64-P
1/20
1550
65,500
273
68
121
989
1085
1005
35
1150
52,800
220
55
129
706
785
727
80-P
1/20
1550
80,600
336
83
122
1200
1320
1220
40
1150
65,100
271
67
130
858
954
894
102-P
1/8
1070
101,800
424
106
123
1490
1635
980
55
850
87,900
366
91
129
1180
1315
783
122-P
1/6
1070
124,400
518
129
124
1790
1970
1170
55
146-P
1/6
1070
152,000
633
157
123
2220
2440
1045
80
166-P
1/6
1070
173,000
720
179
121
2620
2870
1230
80
202-P
1/4
1070
210,200
838
208
118
3200
3490
1495
85
252-P
1/4
1070
249,800
1040
260
115
4180
4550
1205
135
280-P
1/2
1070
283,800
1180
294
119
4430
4840
1275
135
336-P
3/4
1120
333,400
1390
345
119
5210
5690
1500
135
384-P
3/4
1120
386,000
1610
400
118
6140
6700
1770
175
500-P
1-1/2
1120
496,000
2070
514
117
8020
8750
1640
250
600-P
1-1/2
1120
585,000
2440
605
117
9450
10,300
1930
260
720-P
3
1120
705,000
2940
729
119
11,000
12,020
2250
325
Low Final Temperature Models - Standard Model P Units With All Air Ports Open
42-P-L
1/25
1150
34,800
145
36
108
668
716
950
30
1150
26,000
108
27
111
470
506
672
64-P-L
1/20
1550
57,200
238
59
104
1200
1280
1190
35
1150
45,800
191
48
109
862
925
858
80-P-L
1/20
1550
68,000
283
71
106
1360
1455
1350
40
1150
55,000
229
57
111
995
1070
992
102-P-L
1/8
1070
85,400
356
89
108
1640
1760
1050
55
850
71,200
296
74
111
1290
1390
827
122-P-L
1/6
1070
111,000
462
115
107
2180
2330
1390
55
146-P-L
1/6
1070
125,800
524
130
109
2360
2530
1080
80
166-P-L
1/6
1070
149,000
620
154
107
2920
3130
1340
80
202-P-L
1/4
1070
176,800
736
183
108
3390
3640
1560
85
252-P-L
1/4
1070
214,900
895
224
104
4500
4800
1270
135
280-P-L
1/2
1070
251,800
1050
260
106
5040
5380
1420
135
336-P-L
3/4
1120
291,000
1210
302
107
5700
6100
1610
135
384-P-L
3/4
1120
344,000
1430
356
108
6600
7080
1870
175
500-P-L
1-1/2
1120
428,000
1785
446
102
9380
9940
1860
250
600-P-L
1-1/2
1120
515,000
2140
533
106
10,300
11,000
2060
260
720-P-L
3
1120
620,000
2580
642
108
11,900
12,750
2380
325
Notes:
Constant speed units are rated at capacities shown in regular type; capacities 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 SP-7, page 18.
Final temperatures at new conditions can be calculated by applying basic formula.
Table SP-6 – Maximum Spread (Ft.)
Unit No.
42P
64P
80P
102P
122P
146P
166P
202P
252P
280P
336P
384P
500P
600P
720P
Spread (Ft.)
15
17
20
24
26
27
28
32
35
37
45
50
54
57
60
Note:
The “spread” is the diameter of the comfort zone at floor level, projected by the Model P unit without the louver cone diffuser, based on two pounds steam pressure and 60 F entering air.
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