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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 THEBLUE WIRE TO:
FAN MOTOR
MEDIUM FACTORY SETTING
H FOR HIGH SPEED FAN
M FOR MEDIUM SPEED FAN
LFOR LOW SPEED FAN
H
M
L
BLU
Fig. 14 — 50RHE Blower Speed Selection