NOTE: Install filters so that “Air Flow” arrows point toward the unit.
8.Install filter cover over the end of the hood with one screw (center of hood), securing filters into position.
CAUTION: When proceeding with Steps 9 and 10, extreme care must be exercised while turning both the set point and minimum position adjusting screws to prevent twisting them off.
9.The enthalpy set point for the dampers may now be set by selecting the desired set point from graph in Figure 8. For a single enthalpy economizer, carefully turn the set point ad- justing screw to the “A”, “B”, “C” or “D” setting correspond- ing to the lettered curve. For a dual enthalpy economizer, carefully turn the set point adjusting screw fully clockwise past the “D” setting.
10.To check that the damper blades move smoothly without binding, carefully turn the minimum position adjusting screw fully clockwise and then energize and
11. Replace the filter section access panel. | FIG. 8 - ENTHALPY SET POINT ADJUSTMENT |
TABLE 4 - PHYSICAL DATA
| MODELS |
| DEG |
| |
| 036 | 048 | 060 | ||
|
| ||||
EVAP. | CENTRIFUGAL BLOWER (Dia. x Wd. in.) | 12 x10 | 12 x10 | 12 x 10 | |
FAN MOTOR HP |
|
| 1 | ||
BLOWER |
|
| |||
FAN MOTOR HP | 1.5 | 1.5 | 1.5 | ||
| |||||
EVAP. | ROWS DEEP | 3 | 3 | 3 | |
FINS PER INCH | 13 | 13 | 13 | ||
COIL | |||||
FACE AREA (Sq. Ft.) | 3.6 | 4.3 | 5.1 | ||
| |||||
COND. | PROPELLER DIA. (in.) | 22 | 22 | 22 | |
FAN MOTOR HP |
|
|
| ||
FAN | 4,500 | 4,200 | 4,500 | ||
NOM. CFM TOTAL | |||||
| |||||
COND. | ROWS DEEP | 2 | 2 | 2 | |
FINS PER INCH | 18 | 18 | 18 | ||
COIL | |||||
FACE AREA (Sq. Ft.) | 17.1 | 17.1 | 17.1 | ||
| |||||
AIR | QUANTITY PER UNIT (14" x 20" x 1") | 2 | 2 | 2 | |
FILTERS | QUANTITY PER UNIT (14" X 25" X 1") | 1 | 1 | 1 | |
(SEE NOTE) | TOTAL FACE AREA (sq. ft.) | 6.3 | 6.3 | 6.3 | |
CHARGE | REFRIGERANT 22 (lbs./oz.) | 9/12 | 9/8 | 9/8 | |
COMPRESSOR | QUANTITY PER UNIT (HERMETIC TYPE) | 1 / RECPT | 1 /RECPT | 1 / SCROLL |
NOTE: Filter racks are adapted for 1" or 2" thick filters.
WEIGHTS (LBS)
Basic Unit |
| 3 Ton | 615 | |
| 4 Ton | 655 | ||
(Nom. Max.) |
| |||
| 5 Ton | 680 | ||
|
| |||
OPTIONS / ACCESSORIES | ||||
Economizer |
| 50 | ||
Motorized Outdoor |
| 26 | ||
Air Damper |
| |||
|
| |||
Barometric Relief/Fixed | 10 | |||
Outdoor Air Intake Damper | ||||
| ||||
Roof Mounting Curb |
| 92 | ||
| 5 |
TABLE 5 - SUPPLY AIR PERFORMANCE - 3, 4, & 5 TON
GAS HEAT VALUES SHOWN @ 230/460/575 VOLTS - Side Duct Connections
MODEL | MOTOR |
|
|
|
|
| Available External Static Pressure - IWG* |
|
|
|
|
|
|
|
|
| |||||||||
0.20 | 0.30 | 0.40 | 0.50 | 0.60 | 0.70 |
|
| 0.80 |
| 0.90 |
| 1.00 |
| ||||||||||||
DEG | SPEED |
|
|
|
|
| |||||||||||||||||||
CFM | Watts | CFM | Watts | CFM | Watts | CFM | Watts | CFM | Watts | CFM | Watts | CFM | Watts | CFM | Watts | CFM | Watts | ||||||||
|
| ||||||||||||||||||||||||
| HI | - | - | - | - | 1699 | 825 | 1650 | 785 | 1570 | 755 | 1430 |
| 725 |
| 1360 |
| 700 | 1280 |
| 680 | 1180 |
| 655 | |
036 | MED | 1684 | 800 | 1631 | 780 | 1582 | 750 | 1524 | 720 | 1410 | 690 | 1324 |
| 650 |
| 1260 |
| 630 | 1185 |
| 610 | 1100 |
| 590 | |
| LOW | 1487 | 710 | 1464 | 690 | 1421 | 670 | 1367 | 650 | 1315 | 620 | 1246 |
| 605 |
| 1185 |
| 590 | 1110 |
| 570 | 1020 |
| 545 | |
| HI | 1996 | 960 | 1933 | 936 | 1868 | 910 | 1795 | 880 | 1722 | 845 | 1635 |
| 820 |
| 1544 |
| 790 | 1419 |
| 765 | 1300 |
| 740 | |
048 | MED | 1804 | 838 | 1765 | 810 | 1714 | 785 | 1650 | 765 | 1589 | 735 | 1508 |
| 705 |
| 1407 |
| 675 | 1306 |
| 645 | 1195 |
| 625 | |
| LOW | 1681 | 760 | 1640 | 738 | 1604 | 715 | 1541 | 695 | 1490 | 670 | 1416 |
| 645 |
| 1337 |
| 620 | 1230 |
| 595 | 1120 |
| 575 | |
| HI | 2400 | 1155 | 2338 | 1125 | 2274 | 1095 | 2167 | 1045 | 2096 | 1010 | 1990 |
| 980 |
| 1887 |
| 945 | 1771 |
| 905 | 1629 |
| 855 | |
060 | MED | 2290 | 1105 | 2214 | 1065 | 2145 | 1030 | 2071 | 990 | 1990 | 950 | 1911 |
| 920 |
| 1828 |
| 885 | 1724 |
| 835 | 1604 |
| 798 | |
| LOW | 2150 | 1020 | 2100 | 990 | 2029 | 950 | 1965 | 910 | 1905 | 880 | 1816 |
| 838 |
| 1724 |
| 800 | 1644 |
| 770 | 1531 |
| 710 |
NOTE: FOR 208 VOLTS, MULTIPLY VALUES BY 0.95.
*INCLUDES ALLOWANCES FOR A WET EVAPORATOR COIL, 1" FILTERS, AND THE
8 | Unitary Products Group |