Payne PA1P048 Installation & Start-Up Instructions page 22

Pa1p and pa2p single packaged electric cooling units
Table of Contents

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Table
9--Wet
Coit Air
Delivery
(Deduct
10 percent
for 208v)*
Horizontal
and Downflow
Discharge
Unit
PA2P024o060
230 AND 460 VOLT
Motor
External Static Pressure (in. wg)
Unit
Speed
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
Watts
281
282
281
278
276
Low
Cfm
833
776
702
638
554
Watts
375
370
363
357
352
024
Med
Cfm
894
800
754
636
518
Watts
468
457
444
431
423
High
Cfm
884
802
697
467
397
Watts
246
244
243
241
Low
Cfm
910
806
749
680
Watts
343
339
336
332
328
322
317
030
Med
Cfm
1148
1104
1028
958
850
782
645
Watts
441
432
421
410
400
High
Cfm
1102
988
896
783
529
Watts
470
458
445
430
415
399
384
Low
Cfm
1352
1257
1240
1199
1107
1015
924
Watts
514
501
487
471
455
438
422
03G
Med
Cfm
1338
1295
1288
1181
1111
968
813
Watts
646
636
626
614
602
589
High
Cfm
1385
1268
1196
1159
1032
948
Watts
625
614
605
593
574
549
518
485
454
Low
Cfm
1540
1510
1473
1396
1348
1288
1192
1124
1037
Watts
726
695
661
625
591
561
540
042
Med
Cfm
1648
1593
1530
1446
1352
1237
1114
Watts
790
766
7421
713
High
Cfm
1616
1492
1394
1283
Watts
588
577
572
566
556
539
517
491
Low
Cfm
1514
1543
1467
1408
1374
1324
1237
1161
Watts
756
738
719
699
676
650
623
596
572
555
048
Med
Cfm
1785
1765
1706
1628
1577
1503
1421
1357
1298
1253
Watts
896
862
829
800
775
752
728
High
Cfm
1880
1804
1704
1547
1565
1406
1367
Watts
903
898
873
842
814
792
777
764
743
701
618
Low
Cfm
2190
2158
2081
2026
1958
1866
1822
1744
1678
1535
1377
Watts
1002
978
960
941
914
880
839
798
764
750
060
Med
Cfm
2389
2291
2216
2120
2020
1952
1852
1727
1617
1549
Watts
1080
1080
1066
1041
1008
972
938
High
Cfm
2316
2181
2122
2101
2000
1802
1672
Air delivery values are based on operating
voltage of 230v or 460v, wet coil, without filter or electric heater. Deduct filter and electric heater pressure drops to obtain static
pressure available
for ducting.
NOTES:
1 Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12,000 Btuh of rated cooling capacity
Evaporator
ceil frosting may occur at airflows below
this point.
2 Dashes indicate
portions of table that are beyond the blower motor capacity or are not recommended.
O.
EVAPORATOR
BLOWER
AND
MOTOR
NOTE:
All motors
are prelubricate&
Do not attempt
to lubricate
these
motors
For longer
lit'c, operating
economy,
and continuing
efficiency,
clean accumulated
dirt and grease from
the blower
wheel and motor
annually.
Z_
WARNmNG:
Disconnect
and
tag electrical
power
to the unit
before
cleaning
the blower
motor
and
wheel
Faiture
to
adhere
to this
warning
coumd cause
personal
injury
or death.
To clean the blower
motor
and wheel:
1. Remove
and disassemble
blower
assembly
as %llows:
a Remove
unit access
panel
b. Disconnect
motor lead t?om time delay relay (TDR).
Disconnect
yellow
lead t?om terminal
L2 of the contactor.
c. On all units remove
blower
assembly
t'rom unit. Remove
screws
securing
blower
to blower
partition
and slide assembly
out. Be carefid
not to tear insulation
in blower
compartment.
d. Ensure
proper
reassembly
by marking
blower
wheel
and motor in relation
to blower
housing
befbre
disassembly.
e. Loosen
setscrew(s)
that secures
wheel to motor shaR, remove
screws that secure
motor mount brackets
to housing,
and slide motor
and
motor mount
out of housing.
22

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