Haier GE NF97UM User manual

31-5000723 Rev. 0 11-22 GEA
NF97UM
97% Upow/Horizontal Modulating
Variable Speed Gas Furnace
Service
Manual
READ CAREFULLY.
KEEP THESE INSTRUCTIONS.

Page 2 31-5000723 Rev. 0
SERVICE MANUAL
NF97UM Gas Furnace
Table of Contents
Technical Specications - NF97UM.............................3
Parts Arrangement.......................................................8
Unit Components.........................................................9
Conguring Unit Size Codes .....................................17
LED Diagnostic Codes ..............................................18
Placement and Installation ........................................33
Joint Cementing Procedure.......................................34
Venting Practices.......................................................35
Vent Piping Guidelines ..............................................37
For the Province of Ontario, Horizontal Sidewall Vent
Applications Only.......................................................47
Addendum for All Provinces of Canada.....................47
Condensate Piping ....................................................48
Start-Up .....................................................................53
Heating System Service Checks ...............................54
Typical Operating Characteristics..............................58
Maintenance..............................................................59
Wiring and Sequence of Operation ...........................62
Field Wiring Applications with
Conventional Thermostat ..........................................66
Sequence of Operation and
Troubleshooting Flow Chart ......................................69
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to
the potential for personal injury or death.
Electric shock hazard.
Can cause injury or death. Before attempting
to perform any service or maintenance,
turn the electrical power to unit OFF at
disconnect switch(es). Unit may have
multiple power supplies.
WARNING
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves
and protective clothing.
CAUTION
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer (or
equivalent), service agency or the gas supplier.
WARNING
NF97UM series units are high-e󰀩ciency upow, horizontal
right and left) gas furnaces equipped with variable
capacity gas valve, variable speed combustion air inducer
and variable speed indoor blower motor. All models are
designed only for direct vent (dual pipe) venting system.
NF97UM units are available in heating inputs from 66,000
to 132,000 Btuh (19.3 to 38.6 kW) and cooling applications
from 2 to 5 tons (7.0 kW to 17.5 kW). Refer to Technical
Specications for proper sizing.
Units are factory-equipped for use with natural gas. Kits
are available for conversion to LPG operation. All NF97UM
units meet the California Nitrogen Oxides (NOx) Standards
and California Seasonal E󰀩ciency requirements.
All specications in this manual are subject to change.
Procedures outlined in this manual are presented as
recommendations only and do not supersede or replace
local or state codes. In the absence of local or state codes,
the guidelines and procedures outlined in this manual
(except where noted) are recommendations only and do
not constitute code.

Page 3
31-5000723 Rev. 0
PHYSICAL AND ELECTRICAL DATA
Model Input
(Btuh)
Output *
(Btuh)
AFUE
(ICS)
Nominal*
Cooling
Capacity
Gas
Inlet
(in.)
Volts-
Hertz-
Phase
Max. Time
Delay
Breaker or
Fuse
Nominal
F.L.A.
Trans.
(V.A.)
Approx.
Shipping
Weight
(lbs.)
UPFLOW / HORIZONTAL
NF97U070M3B 66,000 64,000 97.0% 3 Tons 1/2 120-60-1 15 7.7 40 138
NF97U090M3C 88,000 85,000 97.0% 3 Tons 1/2 120-60-1 15 7.7 40 155
NF97U090M4C 88,000 85,000 97.0% 4 Tons 1/2 120-60-1 15 10.1 40 165
NF97U090M5C 88,000 85,000 97.0% 5 Tons 1/2 120-60-1 20 12.8 40 165
NF97U110M5C 110,000 106,000 97.0% 5 Tons 1/2 120-60-1 20 12.8 40 175
NF97U135M5D 132,000 127,000 97.0% 5 Tons 1/2 120-60-1 20 12.8 40 190
Note: For vent length and clearances to combustibles, please reference installation instructions.
* At full capacity
Technical Specications - NF97UM
MODEL NUMBER GUIDE
MAJOR/MINOR REVISION
CABINET WIDTH
B - 17.5
C - 21.0
D - 24.5
NOMINAL CFM
3 - 1200 CFM
4 - 1600 CFM
5 - 2000 CFM
DESIGN VARIANT
M - VARIABLE SPEED MODULATING
BRAND
N - GE
PRODUCT
F - FURNACE, GAS
AFUE
97 - 97% EFFICENCY
APPLICATION
U - UPFLOW/HORIZONTAL, STANDARD EMISSION
HEATING INPUT (1000 BTU/HR)
70, 90, 110, 135
NNFF9797 UUMM55CCXXXX
110110

Page 4 31-5000723 Rev. 0
BLOWER PERFORMANCE: BOTTOM INLET
Model
Motor
Size
(hp)
Blower
Size
Temp
Rise
F°
Heating
CFM @ 0" - 0.8" w.c. Cooling
Stages
Speed
Adjustment
Cooling
CFM @ 0" - 0.8" w.c.
* * 40%
Input
70%
Input
100%
Input Low Medium Low
Medium
High
High
Default
UPFLOW / HORIZONTAL
NF97U070M3B
1/2
HP 10 x 9
50 - 80
Max.
Input
+15% 538 833 1128
2nd
Stage
+10% 862 1063 1218 1369
+7.5% 496 772 1048 Default 810 962 1130 1269
Default 453 710 967 -10% 707 841 1007 1140
35 - 65
Min.
Input
1st
Stage
+10% 604 740 843 971
-7.5% 419 657 895 Default 558 668 770 855
-15% 385 604 822 -10% 504 603 683 793
NF97U090M3C
1/2
HP 10 x 9
60 - 90
Max.
Input
+15% 734 1014 1295
2nd
Stage
+10% 879 1040 1212 1362
+7.5% 697 953 1209 Default 803 946 1104 1246
Default 660 891 1122 -10% 721 842 972 1117
35 - 65
Min.
Input
1st
Stage
+10% 626 710 832 952
-7.5% 616 828 1041 Default 569 672 764 862
-15% 572 766 959 -10% 524 612 687 785
NF97U090M4C
3/4
HP 11 x 11
50 - 80
Max.
Input
+15% 835 1234 1633
2nd
Stage
+10% 1168 1379 1583 1771
+7.5% 776 1155 1534 Default 1079 1267 1444 1645
Default 716 1075 1434 -10% 938 1148 1324 1469
35 - 65
Min.
Input
1st
Stage
+10% 843 1007 1159 1315
-7.5% 652 997 1342 Default 780 915 1047 1190
-15% 589 919 1249 -10% 693 838 959 1070
NF97U090M5C
1 HP 11 x 11
50 - 80
Max.
Input
+15% 665 1159 1653
2nd
Stage
+10% 1385 1593 1818 2019
+7.5% 618 1085 1553 Default 1226 1463 1647 1884
Default 571 1012 1453 -10% 1063 1320 1504 1675
35 - 65
Min.
Input
1st
Stage
+10% 933 1054 1274 1466
-7.5% 507 917 1328 Default 836 978 1121 1336
-15% 443 823 1203 -10% 740 868 1010 1152
NF97U110M5C
1 HP 11 x 11
50 - 80
Max.
Input
+15% 861 1424 1988
2nd
Stage
+10% 1312 1560 1744 1955
+7.5% 825 1349 1874 Default 1219 1405 1569 1796
Default 789 1274 1759 -10% 1075 1272 1428 1634
35 - 65
Min.
Input
1st
Stage
+10% 937 1064 1247 1407
-7.5% 731 1187 1644 Default 864 972 1146 1282
-15% 673 1101 1528 -10% 790 888 1025 1167
NF97U135M5D
1 HP 11 x 11
55 - 85
Max.
Input
+15% 1033 1534 2035
2nd
Stage
+10% 1353 1567 1751 1994
+7.5% 957 1426 1895 Default 1202 1448 1616 1828
Default 881 1317 1754 -10% 1080 1290 1472 1668
35 - 65
Min.
Input
1st
Stage
+10% 935 1074 1260 1450
-7.5% 817 1235 1652 Default 834 983 1116 1306
-15% 753 1152 1550 -10% 732 867 1023 1145
** See installation instructions for proper blower setup

Page 5
31-5000723 Rev. 0
BLOWER PERFORMANCE: SIDE INLET
Model
Motor
Size
(hp)
Blower
Size
Temp
Rise
F°
Heating
CFM @ 0" - 0.8" w.c. Cooling
Stages
Speed
Adjustment
Cooling
CFM @ 0" - 0.8" w.c.
* * 40%
Input
70%
Input
100%
Input Low Medium Low
Medium
High
High
Default
UPFLOW / HORIZONTAL
NF97U070M3B
1/2 HP 10 x 9
50 - 80
Max.
Input
+15% 531 812 1093
2nd
Stage
+10% 840 1054 1208 1357
+7.5% 490 756 1022 Default 752 946 1130 1231
Default 449 700 951 -10% 688 805 991 1114
35 - 65
Min.
Input
1st
Stage
+10% 593 706 805 959
-7.5% 413 635 857 Default 543 642 729 824
-15% 378 571 763 -10% 503 584 665 720
NF97U090M3C
1/2 HP 10 x 9
60 - 90
Max.
Input
+15% 702 971 1240
2nd
Stage
+10% 843 1017 1168 1300
+7.5% 673 926 1178 Default 772 912 1054 1193
Default 644 880 1116 -10% 698 799 946 1111
35 - 65
Min.
Input
1st
Stage
+10% 610 707 797 921
-7.5% 608 814 1020 Default 561 643 718 811
-15% 571 747 923 -10% 526 605 667 729
NF97U090M4C
3/4 HP 11 x 11
50 - 80
Max.
Input
+15% 812 1204 1595
2nd
Stage
+10% 1140 1341 1526 1728
+7.5% 759 1127 1495 Default 1043 1235 1398 1566
Default 706 1051 1395 -10% 913 1124 1279 1402
35 - 65
Min.
Input
1st
Stage
+10% 823 1009 1135 1292
-7.5% 608 814 1020 Default 758 882 1026 1151
-15% 571 747 923 -10% 684 816 928 1068
NF97U090M5C
1 HP 11 x 11
50 - 80
Max.
Input
+15% 684 1136 1588
2nd
Stage
+10% 1335 1559 1719 1986
+7.5% 623 1059 1496 Default 1173 1433 1568 1811
Default 562 983 1403 -10% 1049 1283 1451 1603
35 - 65
Min.
Input
1st
Stage
+10% 911 1043 1227 1434
-7.5% 608 814 1020 Default 805 960 1087 1296
-15% 571 747 923 -10% 700 840 991 1115
NF97U110M5C
1 HP 11 x 11
50 - 80
Max.
Input
+15% 733 1194 1747
2nd
Stage
+10% 1270 1519 1712 1899
+7.5% 708 1139 1657 Default 1170 1363 1555 1774
Default 683 1085 1566 -10% 1059 1218 1401 1581
35 - 65
Min.
Input
1st
Stage
+10% 918 1053 1198 1366
-7.5% 632 1007 1457 Default 820 964 1095 1231
-15% 580 929 1348 -10% 722 852 987 1116
NF97U135M5D
1 HP 11 x 11
55 - 85
Max.
Input
+15% 1010 1505 2001
2nd
Stage
+10% 1337 1550 1720 1974
+7.5% 923 1398 1873 Default 1194 1416 1608 1781
Default 836 1290 1744 -10% 1076 1282 1437 1628
35 - 65
Min.
Input
1st
Stage
+10% 938 1070 1236 1418
-7.5% 775 1208 1641 Default 837 985 1114 1296
-15% 715 1126 1537 -10% 736 870 1010 1139
** See installation instructions for proper blower setup