Checklist - International comfort products N9MSB0401410B Service And Technical Support Manual

SERVICE AND TECHNICAL SUPPORT MANUAL
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
RETURN-AIR SPEED
UNIT
CONNECTION
SIZE
0401410 SIDE/BOTTOM
Orange
0401712 SIDE/BOTTOM
0601412 SIDE/BOTTOM
Orange
0601716 SIDE/BOTTOM
Orange
0801716 SIDE/BOTTOM
BOTTOM or
Orange
0802120
3,4
TWO-SIDES
1002116 SIDE/BOTTOM
Yellow
BOTTOM or
Orange
1002122
3,4
TWO-SIDES
BOTTOM or
1202422
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.
6. All airflows that are shown in BOLD exceed 0.58 Watts per CFM at the given external static pressure.
12
EXTERNAL STATIC PRESSURE (in.w.c.)
TAPS 0.1 0.2
2
Black 1160 1120
Blue 970 940
Yellow 920 890
Red 730 705
Black 1310 1255
Yellow 1215 1165
1065 1030
Blue 1005 980
Red 750 740
Black 1295 1265
Blue 1035 1010
Yellow 965 940
Red 760 735
5
Black 1760 1705
Yellow 1415 1400
1065 1060
Blue 1010 1000
Red 770 745
Black 1800 1770
Yellow 1445 1430
1250 1240
Blue 1090 1080
Red 880 860
5
Black 2310 2235
Yellow 1720 1700
1515 1500
Blue 1150 1135
Red 945 915
Black 1725 1700
Blue 1500 1475
1235 1215
5
Red 1035 1005
5
Black 2690 2595
Yellow 2180 2145
1790 1795
Blue 1640 1640
Red 1365 1360
Black 2645 2545
Blue 2430 2355
Yellow 1850 1825
1610 1595
Red 1445 1430
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
1070 1020 965
905 865 825
855 820 770
670 630 580
1205 1150 1100
1120 1070 1025
1000 960 920
950 920 880
720 700 670
1230 1195 1155
980 940 905
915 885 855
705 675 630
1635 1575 1505
1365 1335 1290
1050 1035 1010
990 975 955
730 710 685
1735 1685 1630
1410 1385 1350
1225 1200 1170
1060 1035 1010
835 810 780
2140 2050 1960
1670 1625 1570
1480 1445 1405
1105 1080 1050
885 860 835
1665 1620 1570
1450 1410 1370
1190 1160 1120
955 915 875
2490 2390 2280
2095 2045 1980
1785 1765 1735
1635 1620 1595
1360 1345 1330
2445 2340 2230
2275 2185 2090
1795 1760 1705
1575 1550 1500
1405 1380 1350
Gas Furnace: N9MSB
0.6 0.7 0.8
905 835 765
770 715 655
720 665 600
535 495 445
1045 985 930
970 915 860
875 830 780
840 790 745
640 615 585
1110 1055 990
865 805 740
805 750 685
570 520 470
1430 1355 1270
1240 1180 1115
975 940 890
925 885 845
660 625 585
1570 1495 1415
1305 1255 1195
1130 1090 1040
970 930 885
750 710 665
1860 1755 1650
1505 1435 1360
1350 1290 1225
1020 980 935
805 770 720
1510 1445 1365
1330 1260 1180
1075 1020 950
825 770 715
2170 2050 1930
1905 1820 1725
1690 1630 1555
1565 1510 1450
1300 1265 1215
2110 1990 1810
1980 1850 1700
1625 1540 1465
1455 1405 1345
1315 1265 1215
440 04 4412 00
.
0.9 1.0
695 630
585 515
545 465
380 335
870 805
800 740
725 670
695 640
550 500
895 795
655 580
610 530
405 335
1180 1090
1040 965
835 770
785 720
545 500
1330 1230
1120 1045
975 910
835 765
615 560
1535 1430
1275 1185
1155 1075
880 815
670 610
1265 1160
1095 1010
880 805
650 575
1810 1675
1615 1490
1460 1350
1365 1270
1155 1080
1685 1580
1600 1500
1380 1280
1270 1185
1150 1075