Checklist - International comfort products N9MSB0401410A Service And Technical Support Manual

SERVICE AND TECHNICAL SUPPORT MANUAL
g. Reconnect inducer motor wires, replace door, and
turn on 115−v power.
h. Blower will run for 90 seconds before beginning the
call for heat again.
i. Furnace should ignite normally.

Checklist

1. Put away tools and instruments. Clean up debris.
2. Verify that the jumper is removed from the TEST/TWIN
terminal. Verify that there is nothing plugged into the PLT
connector.
NOTE: If there is a jumper connector plugged into PLT, remove
it and discard. (See Figure 4)
3. Verify that the Blower/Heat Off Delay jumpers are set as
desired. (See Figure 4 and Figure 15)
Table 5 COOLING AIR DELIVERY - CFM (with filter
UNIT RETURN-AIR SPEED
SIZE CONNECTION
0401410 SIDE/BOTTOM
0601410 SIDE/BOTTOM
Orange
0601714 SIDE/BOTTOM
Orange
0801716 SIDE/BOTTOM
BOTTOM or
Orange
0802120
3,4
TWO-SIDES
1002114 SIDE/BOTTOM
BOTTOM or
Orange
1002120
3,4
TWO-SIDES
BOTTOM or
1202420
3,4
TWO-SIDES
Orange
NOTE:
1. A filter is required for each return−air inlet. Airflow performance includes a 3/4 in. (19 mm) washable filter media such as contained in factory−authorized accessory
filter rack. See accessory list. To determine airflow performance without this filter, assume an additional 0.1 in. w.c. available external static pressure.
2. Blower speed taps are not always in the same order. Factory Default blower connections are as follows:
Heating airflow − BLUE (also used for Continuous Fan)
Cooling airflow − BLACK (enabled when the Y terminal is energized)
ADJUST THE BLOWER SPEED TAPS AS NECESSARY FOR THE PROPER AIR TEMPERATURE RISE FOR EACH INSTALLATION.
3. Airflows over 1800 CFM require bottom return, two−side return, or bottom and side return. A minimum filter size of 20" x 25" (508 x 635 mm) is required.
4. For upflow applications, air entering from one side into both the side of the furnace and a return air base counts as a side and bottom return.
5. Highlighted areas indicate that this airflow range is beyond the range allowed for heating. THESE AIRFLOW RANGES MAY ONLY BE USED FOR COOLING.
12
EXTERNAL STATIC PRESSURE (IN.W.C.)
TAPS
0.1 0.2
2
Black 1100 1055
Yellow 955 915
Blue 820 795
Red 730 710
Black 1340 1295
Yellow 1035 1010
Blue 845 825
Red 770 750
5
Black 1665 1615
Yellow 1340 1320
1050 1045
Blue 985 980
Red 735 720
5
Black 1870 1810
Yellow 1525 1495
1375 1355
Blue 1045 1040
Red 880 865
5
Black 2360 2250
Yellow 2100 2030
1840 1810
Blue 1705 1685
Red 1425 1410
Black 1750 1705
Blue 1550 1510
Yellow 1290 1255
Red 1085 1045
5
Black 2415 2330
Yellow 2130 2075
1830 1815
Blue 1690 1680
Red 1415 1405
Black 2440 2360
Blue 2300 2245
Yellow 1805 1780
1560 1550
5
Red 1390 1385
5
Specifications subject to change without notice.
4. Verify that the blower (lower door in upflow position) and
control ("Main" or upper door in upflow position) doors
are properly installed.
5. Verify that the Status LED glows. If not, check that the
power supply is energized and that the blower door is
secure. See Figure 14 to interpret diagnostic codes
6. Cycle test furnace with room thermostat to be sure that it
operates properly with the room thermostat. Check all
modes including Heat, Cool and Fan.
7. Check operation of accessories per manufacturer's
instructions.
8. Review Home Owner's Information with owner.
9. Attach entire literature packet to furnace.
)
1
0.3 0.4 0.5
1010 960 905
875 830 790
765 730 695
680 655 625
1245 1190 1130
980 945 910
810 785 755
730 710 675
1550 1485 1420
1295 1260 1215
1035 1015 995
975 950 930
700 675 650
1740 1670 1600
1460 1415 1365
1330 1300 1260
1030 1010 985
850 835 810
2160 2065 1970
1960 1885 1805
1765 1725 1665
1660 1615 1570
1385 1365 1335
1660 1605 1545
1470 1430 1380
1220 1180 1130
1010 960 915
2245 2155 2065
2010 1945 1865
1785 1740 1685
1655 1620 1580
1390 1370 1345
2295 2215 2105
2185 2090 2005
1750 1705 1650
1535 1505 1470
1370 1345 1320
Gas Furnace: N9MSB
0.6 0.7 0.8
850 795 740
740 695 645
655 615 570
595 555 515
1065 1005 895
865 795 730
710 670 625
640 600 560
1345 1270 1190
1165 1110 1045
960 915 845
900 845 795
620 595 560
1525 1440 1355
1305 1240 1170
1210 1155 1090
960 920 875
785 750 715
1880 1785 1685
1720 1635 1545
1590 1515 1430
1510 1445 1370
1290 1245 1190
1475 1405 1305
1320 1245 1170
1075 1020 960
865 805 740
1965 1865 1760
1785 1695 1600
1625 1550 1470
1530 1465 1385
1305 1260 1200
1975 1815 1710
1855 1745 1635
1595 1515 1430
1420 1360 1285
1285 1230 1175
440 04 4411 03
.
0.9 1.0
685 620
590 530
515 460
465 400
815 725
665 605
570 515
510 455
1105 985
925 850
785 725
740 690
520 480
1270 1180
1090 990
1025 940
825 745
665 605
1580 1455
1440 1305
1335 1240
1280 1135
1120 1050
1220 1140
1095 1015
885 800
665 595
1645 1530
1490 1375
1370 1255
1295 1185
1125 1050
1575 1405
1505 1370
1330 1230
1205 1130
1105 1035