N95ESN: Installation, Start-up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
52
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 a factory-authorized accessory filter rack. See
accessory list in Specification sheet. To determine airflow performance without this filter, assume an additional 0.1 in. w.c. available external static pressure.
2. ADJUST THE BLOWER SPEED TAPS AS NECESSARY FOR THE PROPER AIR TEMPERATURE RISE FOR EACH INSTALLATION.
3. The “Function” column identifies which speed taps can be used for heating.
4. If the same motor speed tap is needed for heating and cooling, a Jumper Wire accessory kit is available, see Specification sheet for the current Jumper Wire accessory part number.
Reference the “Start-up, Adjustments, and Safety Check” section for further Jumper Wire instructions.
5. 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.
6. 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.
7. The “-” entry indicates an unstable operating condition.
Adjust Cooling Airflow
The cooling airflow can be set from the remaining blower speed taps.
Refer to the Air Delivery Tables in these instructions.
If the same motor speed tap is needed for heating and cooling, a Jumper
Wire accessory kit is available, see Specification sheet for the current
Jumper Wire accessory part number. The single wire end of the jumper
will be connected to the desired blower motor speed lead. The two wire
end of the jumper will be connected to the control board, connecting one
wire to the HEAT (heating blower tap) terminal and the other will be
connected to the COOL (cooling blower tap). Use the provided wire ties
to secure the loose blower motor speed lead and any other loose wires,
being careful not to put tension on any wire connectors.
Adjust Thermostat Heat Anticipator
Mechanical thermostat: Set thermostat heat anticipator to match the
amp draw of the electrical components in the R-W circuit. Accurate amp
draw readings can be obtained at the wires normally connected to
thermostat subbase terminals R and W. The thermostat anticipator
should NOT be in the circuit while measuring current.
1. Remove thermostat from subbase or from wall.
2. Connect an amp meter across the R and W subbase terminals or R
and W wires at wall. See Fig. 63.
A96316
Fig. 63 – Amp. Draw Check with Ammeter
3. Record amp draw across terminals when furnace is in low heat and
after blower starts.
4. Set heat anticipator on thermostat per thermostat instructions and
install on subbase or wall.
5. Install blower access door.
Electronic thermostat: Set cycle rate for 3 cycles per hr.
0802120
Gray
5, 6
Cooling. Do not use for heating 2045 1995 1950 1900 1855 1805 1760 1710 1660 1615
Yellow Alt Cooling. Do not use for heating 1665 1625 1575 1530 1480 1435 1385 1340 1285 1240
Orange Alt Cooling or alt Heating 1475 1420 1370 1320 1270 1220 1170 1125 1070 1025
Blue Heating or alt Cooling 1345 1290 1235 1180 1130 1080 1025 975 935 885
Red Alt Cooling. Do not use for heating 1155 1080 1015 960 895 845 790 735 675 620
1002120
Gray
5, 6
Cooling. Do not use for heating 2280 2240 2200 2165 2125 2085 2020 1910 1795 1665
Yellow
5, 6
Alt Cooling. Do not use for heating 1860 1815 1775 1730 1690 1645 1605 1560 1515 1465
Blue Heating or alt Cooling 1755 1710 1665 1620 1580 1535 1485 1440 1390 1340
Orange Alt Cooling or alt Heating 1530 1480 1425 1380 1325 1275 1215 1160 1110 1060
Red Cooling. Do not use for heating 1340 1285 1230 1170 1110 1050 990 930 875 820
1002122
Gray
5, 6
Cooling. Do not use for heating 2215 2180 2145 2105 2065 2025 1985 1940 1900 1860
Yellow
5, 6
Alt Cooling. Do not use for heating 2115 2080 2035 2000 1960 1920 1880 1835 1790 1740
Orange
5, 6
Alt Cooling. Do not use for heating 1975 1935 1890 1850 1805 1760 1720 1670 1620 1570
Blue
5, 6
Heating or alt Cooling 1810 1765 1715 1670 1620 1570 1515 1460 1405 1355
Red Alt Cooling. Do not use for heating 1530 1475 1425 1360 1300 1240 1175 1115 1055 1000
1202422
Gray
5, 6
Cooling. Do not use for heating 2310 2255 2205 2155 2105 2055 2005 1955 1910 1885
Blue
5, 6
Heating or alt Cooling 2065 2020 1970 1915 1860 1805 1740 1690 1635 1580
Yellow
5, 6
Alt Cooling or alt Heating 1850 1800 1745 1690 1640 1585 1530 1475 1420 1360
Orange Alt Cooling. Do not use for heating 1500 1440 1380 1320 1260 1205 1145 1085 1035 955
Red Alt Cooling. Do not use for heating 1070 960 875 805 710 630 560 490 420 355
1402422
Gray
5, 6
Cooling. Do not use for heating 2505 2465 2425 2370 2310 2250 2180 2090 1955 1810
Blue
5, 6
Heating or alt Cooling 2180 2130 2085 2035 1990 1945 1900 1850 1800 1755
Yellow
5, 6
Alt Cooling or alt Heating 1910 1855 1810 1760 1705 1655 1605 1555 1505 1460
Orange Alt Cooling. Do not use for heating 1560 1505 1445 1380 1325 1265 1210 1155 1100 1040
Red
7
Alt Cooling. Do not use for heating 855 760 665 565 470 385 305 - - -
Table 20 – Air Delivery - CFM (With Filter) (Continued)
UNIT SIZE
WIRE LEAD
COLOR
SPEED
TAPS
2, 3
(Function)
EXTERNAL STATIC PRESSURE (IN.W.C.)
0.1 0.2 0.3
0.4 0.5 0.6 0.7 0.8 0.9 1.0
R Y W G
10 TURNS
THERMOSTAT SUBBASE
TERMINALS WITH
THERMOSTAT REMOVED
(ANITICIPATOR, CLOCK, ETC.,
MUST BE OUT OF CIRCUIT.)
HOOK-AROUND
AMMETER
EXAMPLE:
5.0 AMPS ON AMMETER
10 TURNS AROUND JAWS
=
0.5 AMPS FOR THERMOSTAT
ANTICIPATOR SETTING
FROM UNIT 24-V
CONTROL TERMINALS
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