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58SP0A/58SP1A: 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.
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method to check limit control, it can be established that limit is
functioning properly and will operate if there is a restricted
return-air supply or motor failure. If limit control does not function
during this test, cause must be determined and corrected.
a. Run furnace for at least 5 minutes.
b. Gradually block off return air with a piece of cardboard or sheet
metal until the limit trips.
c. Unblock return air to permit normal circulation.
d. Burners will re-light when furnace cools down.
2. Check draft safeguard switch. The purpose of this control is to
cause the safe shutdown of the furnace during certain blocked vent
conditions.
a. Verify vent pipe is cool to the touch.
b. Disconnect power to furnace and remove vent connector from
furnace vent elbow.
c. Restore power to furnace and set room thermostat above room
temperature.
d. After normal start-up, allow furnace to operate for 2 minutes,
then block vent elbow in furnace 80 percent of vent area with a
piece of flat sheet metal.
e. Furnace should cycle off within 2 minutes. If gas does not shut
off within 2 minutes, determine reason draft safeguard switch did
not function properly and correct condition.
NOTE:
Should switch remain open longer than 3 minutes, furnace
control board will lockout the furnace for 3 hours. To reset furnace
control board, turn thermostat below room temperature or from HEAT to
OFF and turn 115-v power OFF, then back ON.
f. Remove blockage from furnace vent elbow.
g. Switch will auto-reset when it cools.
h. Re-install vent connector.
3. Check Pressure Switch(es)
This control proves operation of the draft inducer blower.
a. Turn off 115-v power to furnace.
b. Disconnect inducer motor lead wires from wire harness.
c. Turn on 115-v power to furnace.
d. Set thermostat to “call for heat” and wait 1 minute. When
pressure switch is functioning properly, hot surface igniter
should NOT glow and control diagnostic light flashes a status
code 32. If hot surface igniter glows when inducer motor is
disconnected, shut down furnace immediately.
e. Determine reason pressure switch did not function properly and
correct condition.
f. Turn off 115-v power to furnace.
g. Reconnect inducer motor wires, replace outer 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 blower OFF-DELAY time is selected as desired.
3. Verify that blower and burner access doors are properly installed.
4. Cycle test furnace with room thermostat.
5. Check operation of accessories per manufacturer’s instructions.
6. Review User’s Guide with owner.
7. Attach literature packet to furnace.
Table 13 – Air Delivery - CFM (With Filter)*
COOLING
AND HEATING AIR DELIVERY - CFM (Bottom Return
with Filter)
(SW1-5 and SW2-2 set to OFF, except as indicated. See Notes 1 and 2.)
Unit Size: 045V14--12
Clg/CF Switch settings
External Static Pressure (ESP)
Clg Switches:
SW2-8
SW2-7
SW2-6
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
Clg Default:
OFF
OFF
OFF
1175
1140
1105
1075
1040
1015
980
945
910
875
Cooling (SW2-8,7,6)
OFF
OFF
ON
610
560
500
440
380
See Note 4
OFF
ON
OFF
805
760
720
670
625
575
530
485
See Note 4
OFF
ON
ON
1010
970
930
895
860
825
785
745
705
665
ON
OFF
OFF
1175
1140
1105
1075
1040
1015
980
945
910
875
ON
OFF
ON
1345
1310
1280
1250
1220
1190
1165
1140
1095
1015
ON
ON
OFF
1480
1435
1395
1350
1310
1265
1220
1185
1115
1015
ON
ON
ON
1480
1435
1395
1350
1310
1265
1220
1185
1115
1015
Maximum Clg Airflow
2
1480
1435
1395
1350
1310
1265
1220
1185
1115
1015
CF Switches
SW2-5
SW2-4
SW2-3
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
Low-Clg Default:
OFF
OFF
OFF
610
560
500
440
380
See Note 4
Low-Cooling (SW2-5,4,3)
OFF
OFF
ON
610
560
500
440
380
See Note 4
OFF
ON
OFF
805
760
720
670
625
575
530
485
See Note 4
OFF
ON
ON
1010
970
930
895
860
825
785
745
705
665
ON
OFF
OFF
1175
1140
1105
1075
1040
1015
980
945
910
875
ON
OFF
ON
1345
1310
1280
1250
1220
1190
1165
1140
1095
1015
ON
ON
OFF
1480
1435
1395
1350
1310
1265
1220
1185
1115
1015
ON
ON
ON
1480
1435
1395
1350
1310
1265
1220
1185
1115
1015
Cont. Fan Default:
OFF
OFF
OFF
610
560
500
440
380
See Note 4
Continuous Fan (SW2-5,4,3)
OFF
OFF
ON
610
560
500
440
380
See Note 4
OFF
ON
OFF
805
760
720
670
625
575
530
485
See Note 4
OFF
ON
ON
1010
970
930
895
860
825
785
745
705
665
ON
OFF
OFF
1010
970
930
895
860
825
785
745
705
665
ON
OFF
ON
1010
970
930
895
860
825
785
745
705
665
ON
ON
OFF
1010
970
930
895
860
825
785
745
705
665
ON
ON
ON
1010
970
930
895
860
825
785
745
705
665
Heating (SW1)
Heat Airflow
3
870
825
785
745
700
655
615
570
530
480