24
Table 6 — Unit Ventilator Airflow — ECM Airflow
LEGEND
NOTES:
1. Factory default is Low Position.
2. Med, High, and Max positions are field settings.
Make Final Preparations
1. Turn power off (lock out and tag electrical disconnect).
2. Install thermostats and perform any other final wiring as
applicable.
3. Clean dirt, dust, and other construction debris from unit
interior. Be sure to check fan wheel and housing.
4. Rotate fan wheel by hand to be sure it is free and does not
rub on housing.
5. Be sure drain line is clear and is properly and securely
positioned. Pour water into drain to check operation.
6. Vent all air from unit coil and related piping. If air vent is
manual, release air from system by turning air vent screw
1
1
/
2
turns counterclockwise with screwdriver. When
steady stream of water begins to escape, close valve. If air
vent is automatic, trapped air will be vented automatical-
ly. Vent releases air slowly, usually dripping water into
drain pan in the process.
Make sure all service valves are open and that motorized
control valves, if supplied, are set for automatic operation.
7. Check all control valves in the system for proper opera-
tion in accordance with valve manufacturer’s instructions.
8. For units with factory-installed balancing valves, adjust
as follows:
a. Butterfly valves — Turn valve gate by inserting
screwdriverintoslotinvalvetopandrotatingupto
90 degrees. Valve is fully open when slot is parallel
with valve body. When slot is perpendicular to
body, flow through valve is at minimum. Valve
does not seal against flow.
b. Ball valves with lever handles — Valve gate action
is similar to butterfly valves above except that
when handle is perpendicular to valve body, there
is no flow through valve. Ball valves may be used
as shutoff valves.
9. Install filter in frame at front of coil. If field-supplied
filters are used, be sure size is correct. See Table 1 for
filter data.
10. Ensure all panels and filters are installed before checking
fan operation. Turn on unit power. Check fan and motor
operation.
.
PRODUCT INTEGRATED CONTROL
Physical Characteristics —
Figure 9 shows the loca-
tion of factory-supplied and factory-installed sensors, switches,
and devices (standard and optional). Tables 7-11 summarize
the Unit Ventilator Comfort Control module offerings and
accessory packages.
The control includes the electronic control board assembly,
fuses, relay, transformer, terminal block, low-limit air tempera-
ture protection (water coil units only), and other devices. A
disconnect switch, located below the control box, is provided
to shut off the power to the control box (see Fig. 10). See
Tables 8 and 9 for factory-installed options and accessory
packages.
Control environmental limitations are as follows:
Shipping Temperature -40 to 185 F
Shipping Humidity 10 to 95%
Operating Temperature 32 to 140 F
OperatingHumidity 10to90%
The Unit Ventilator Comfort Control module is powered from
the same source as the unit’s single source power connection.
Field wiring for accessories terminates in the control enclo-
sure. Control accessory wiring requirements are 18 or 20 gage,
2 or 3 conductor twisted as specified. Refer to wiring details for
more information. See Table 10 for control board terminal
designations.
Carrier’s 40UV,UH unit ventilators with factory-installed
controls are ETL listed and listed to UL standard 1995 for heat-
ing and cooling equipment. All listings are for the complete
unit and all factory-supplied accessories. Use of other accesso-
ry components are not covered under these listings.
UNIT SIZE
MOTOR
HP
COIL TYPE
APPROXIMATE AIR DELIVERY (Cfm)
ESP Speed Board Position
Low Position
(0.0 in. wg)
Med Position
(0.10 in. wg)
High Position
(0.25 in. wg)
Max Position
(0.45 in. wg)
Max High Low Max High Low Max High Low Max High Low
40UV050
1
/
3
CW 499 336 248 — — — — — — — — —
3-4EH/DX 499 419 336 — — — — — — — — —
5-6EH 491 380 324 — — — — — — — — —
40UV,UH075
1
/
3
CW 747 484 346 753 548 432 752 530 437 751 541 386
3-4EH/DX 747 644 498 753 609 472 752 612 470 751 618 498
5-6EH 755 645 583 746 598 539 755 585 554 765 610 542
40UV,UH100
1
/
3
CW 997 703 505 987 693 543 1012 663 483 994 692 480
3-4EH/DX 997 853 615 987 850 639 1012 823 626 994 819 618
5-6EH 1016 819 719 1002 851 709 1024 798 787 1024 820 734
40UV,UH125
1
/
2
CW 1266 880 657 1239 905 609 1235 898 676 1231 898 627
3-4EH/DX 1266 1023 769 1239 1055 758 1235 1037 765 1231 1010 778
5-6EH 1259 1049 897 1239 995 888 1226 995 888 1253 994 919
40UV,UH150
1
/
2
CW 1503 1033 775 1479 1046 712 1494 1020 770 1486 1075 737
3-4EH/DX 1503 1246 956 1479 1216 965 1494 1209 927 1486 1222 917
5-6EH 1517 1222 1068 1490 1206 1087 1498 1159 1120 1503 1188 1074
40UH200
3
/
4
ALL 2014 1384 1023 1981 1386 971 1965 1385 997 1814 1354 993
3-4EH/DX — Direct Expansion Coil Applications with 3 to
4 Elements of Electric Heat
5-6EH — 5 to 6 Elements of Electric Heat
CW — Chilled Water Applications
ESP — External Static Pressure
IMPORTANT: Do not start up or operate unit without
filter and panels installed. Be sure filter and unit interior
are clean.
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