Make Duct Connections -- If applicable, install all
ductwork to and from unit in accordance with all applicable
codes. Duct consU-acfion must allow unit to operate within duct
external static pressure limits as shown on job submittals and in
Tables 5 and 6. Duct opening should be the same size as the
unit. For 40UH units ducted to multiple openings, allow ade-
quate straight duct, as shown below, imnaeditately after the unit.
40UH 075 100 125 150 200
Minimum Straight Duct 45 52 58 63
Required (Length in ft) 75
Units designed to operate with ductwork may be damaged
if operated without intended ductwork attached.
Ensure that units ducted to multiple openings have sufficient
straight duct immediately after the unit.
Units provided with outalde air must utilize the low-
temperature safety switch to prevent coil freeze-up.
Insulate all ductwork as required. Use flexible connections
to minimize duct-to-unit alignment problems and noise trans-
mission where specified.
Install ductwork, grilles, and plenums so that they do not re-
strict access to filter.
Cut openings for supply and remm air grilles, thermostats,
and switch plates where specified on job drawings. Be careful
not to cut wires, piping, or structural supports. Use a steel ther-
mostat shield ring to protect drywall from thermostat wiring
where applicable.
Prevent dust and debris from sealing in unit. If wall finish or
color is to be applied by spraying, cover all openings to
prevent spray from entering unit.
Table 5 -- Unit Ventilator Airflow -- PSC Motor*
FACTORY SETTINGS -- CHILLED WATER COIL APPLICATIONS
Unit
40UVO50
40UV, UH075
4OUV,UH1OO
40UV, UH125
40UV, UH150
Speed 1-row 2-row
Max 522 51 o
High 503 490
Low 459 449
Max 806 778
High 682 664
Low 569 554
Max 1064 1033
High 662 659
Low 530 519
Max 1295 1285
High 999 930
Low 568 616
Max 1542 1480
High 1071 1068
Low 812 801
ApproxlmateAIrDellvery(Cfm)
3-row 4-row 5-row
497 485 490
476 464 473
440 425 452
750 747 766
645 629 621
539 527 533
1001 1013 973
655 642 763
507 503 498
1215 1218 1239
876 665 852
597 570 568
1500 1484 1468
1065 1034 1033
790 881 948
6-row 7-row
469 457
476 444
455 430
732 697
596 570
514 495
980 967
740 717
801 504
1250 1175
846 846
558 573
1482 1374
1031 1013
842 799
FACTORY SETTINGS -- ELECTRIC HEAT/OX COIL APPLICATIONS
Unit Speed
Max
40UV050 High
Low
Max
40UV, UH075 High
Low
Max
40UV, UHIO0 High
Low
Max
4OUV, UH125 High
Low
Max
4OUV, UH150 High
Low
LEGEND
CX -- Chilled Water Applications
DX -- Direct Expansion
1-row
522
503
458
806
682
569
1064
794
662
1295
1055
738
1542
1285
934
2-rovv
510
490
449
778
664
554
1033
788
659
1285
1040
767
1480
1257
928
Approximate Air Delivery (Cfm)
3-row 4-row 5-row
497 485 490
479 464 452
440 425 410
750 747 786
645 629 621
539 527 533
1001 1013 973
782 773 857
655 642 628
1215 1218 1239
1024 995 1099
732 719 987
1500 1484 1468
1229 1248 1246
922 901 1033
6-row
489
455
414
732
596
514
990
834
620
1250
1091
986
1492
1239
1031
NOTE: Use the table below to determine the heatin,
combinations available with PSC Motor operation.
7-row
457
430
406
697
570
495
967
810
611
1175
1052
964
1374
1199
1013
and cooling coil
HW -- Hot Water
*Standard on sizes 050-150.
HEATING COIL
COOLING COIL H.W_W l Steam 1 Ele_lc
6 Rows CW 1 or 2 rows N/A 3 elements
4 Rows CW 3 rows 1 or 2 rows 4 elements
3 Rows CW or DXt" 4 rows 1 or 2 rows 5 or 6 elements
tDX cooling applications are only available in 3-row cooling
configuration.
23
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