15
PSC (PERMANENT SPLIT CAPACITOR) BLOWER SPEED
SELECTION — All Water Source Heat Pumps are factory set
to deliver rated airflow at nominal static (37 Pa) on medium
speed. Where higher static is needed, high speed can be
utilized (100 to 125 Pa). Low speed will deliver approximately
85% of rated airflow (25 Pa). The PSC blower fan speed can
be changed on all units by swapping wires connected to the
relay contacts that control the fan. See Table 4 and Fig. 14.
NOTE: Available airflow for all units is shown in Table 4.
Table 4 — 50RHE Blower Performance
LEGEND
NOTES:
1. Units factory shipped on medium speed. Other speeds require
field selection.
2. For dual voltage units, airflow is rated at lowest voltage.
3. Performance data shown is based n wet coil and clean air filter.
50RHE
UNIT
NOMINAL
AIRFLOW
(L/s)
MINIMUM
AIRFLOW
(L/s)
FAN
SPEED
AIRFLOW (L/s)
External Static Pressure (Pa)
0
25
50
75
100
125
006
81
61
HI
133
123
112
89
78
—
MED
110
99
87
68
—
—
LO
98
90
75
60
—
—
009
113
85
HI
165
151
142
118
99
—
MED
160
146
127
113
94
—
LO
151
137
123
109
90
—
012
140
104
HI
170
165
151
137
123
109
MED
165
151
142
127
118
—
LO
146
137
127
118
104
—
015
212
160
HI
345
316
288
250
198
—
MED
321
302
274
241
189
—
LO
293
278
255
222
179
—
019
264
198
HI
326
311
283
250
203
—
MED
302
288
260
227
189
—
LO
293
269
245
217
179
—
024
307
231
HI
396
368
335
302
260
—
MED
387
359
326
297
255
—
LO
368
340
311
278
231
—
030
349
264
HI
529
496
463
425
378
330
MED
510
477
448
415
368
326
LO
458
439
406
378
340
297
036
437
326
HI
614
576
519
463
415
373
MED
580
543
488
434
392
349
LO
505
472
429
387
349
—
042
530
396
HI
743
691
629
566
501
435
MED
637
593
539
485
429
—
LO
498
463
421
—
—
—
048
630
472
HI
793
738
672
604
535
464
MED
777
723
658
592
524
455
LO
762
709
645
580
514
446
High Static
048
630
472
HI
—
—
—
757
668
552
MED
—
—
787
710
623
529
LO
—
797
748
690
612
516
060
790
595
HI
896
866
833
796
755
710
MED
818
803
779
747
707
658
LO
748
731
709
683
653
618
Shaded areas are below minimum CFM. This data is
provided for troubleshooting information only.
CONNECT THE BLUE WIRE TO:
FAN MOTOR
MEDIUM FACTORY SETTING
H FOR HIGH SPEED FAN
M FOR MEDIUM SPEED FAN
L FOR LOW SPEED FAN
H
M
L
BLU
Fig. 14 — 50RHE Blower Speed Selection